kotlin/ChangeLog.md

CHANGELOG

1.4-M2

Compiler

New Features

• KT-37432 Do not include annotations fields into 'visibility must be explicitly specified' check in api mode

Performance Improvements

• KT-27362 Anonymous classes representing function/property references contain rarely used methods
• KT-35626 NI: Performance problem with many type parameters
• KT-36047 Compiler produces if-chain instead of switch when when subject captured as variable
• KT-36638 Use 'java/lang/StringBuilder.append (C)Ljava/lang/StringBuilder;' when appending single character in JVM_IR
• KT-37389 Avoid type approximation during generation constraints with EQUALITY kind
• KT-37392 Avoid substitution and type approximation for simple calls
• KT-37546 NI: high memory and CPU consumption due to creating useless captured types (storing in approximated types cache, unneeded computations)

Fixes

• KT-11265 Factory pattern and overload resolution ambiguity
• KT-27524 Inline class is boxed when used with suspend modifier
• KT-27586 ClassCastException occurs if the Result (or any other inline class) is returned from a lambda
• KT-30419 Use boxed version of an inline class in return type position for covariant and generic-specialized overrides
• KT-31163 FIR: consider replacing comparisons with compareTo calls and some additional intrinsics
• KT-31585 ClassCastException with derived class delegated to generic class with inline class type argument
• KT-31823 NI: Type mismatch with a star projection and UnsafeVariance
• KT-33119 Pre-increment for inline class wrapping Int compiles to direct increment instead of inc-impl
• KT-33715 Kotlin/Native: metadata compiler
• KT-34048 IllegalAccessError when initializing val property in EXACTLY_ONCE lambda
• KT-34433 NI: Type mismatch with a star projection and UnsafeVariance
• KT-35133 FIR Java: don't set 'isOperator' for methods with non-operator names
• KT-35234 ClassCastException with creating an inline class from a function reference of covariant or generic-specialized override
• KT-35406 Generic type implicitly inferred as Nothing with no warning
• KT-35587 Plain namespace strings in JvmNameResolver.PREDEFINED_STRINGS are prone to namespace changes during jar relocation.
• KT-36044 NI: premature fixation a type variable if there were nested lambdas (constraint source was the deepest lambda)
• KT-36057 [FIR] Incorrect smartcast
• KT-36069 NI: TYPE_MISMATCH caused by incorrect inference to Nothing
• KT-36125 Callable reference resolution ambiguity error is not displayed properly in the IDE
• KT-36191 IDE locks loading packages and editing file containing try keyword inside string template
• KT-36222 NI: Improve error message about nullability mismatch for a generic call
• KT-36249 NI doesn't use upper bound for T of called function during infer return type and as a result infer it to Any? if the resulting type was intersection type
• KT-36345 FIR: record argument mapping for use in back-end
• KT-36446 NI: "UnsupportedOperationException no descriptor for type constructor of IntegerLiteralType[Int,Long,Byte,Short]" with BuilderInference and delegate
• KT-36758 [FIR] Unresolved callable reference to member of local class
• KT-36759 [FIR] Unsupported callable reference resolution for methods with default parameters
• KT-36762 [FIR] Unresolved array.clone()
• KT-36764 [FIR] Bug in inference with DefinitelyNotNull types
• KT-36816 NI: definitely not-null (T!!) types in invariant positions don't approximate to T inside inference process
• KT-36819 NI: premature completion of lambdas, which are passed somewhere
• KT-36850 Incorrect private visibility of sealed class constructors
• KT-36856 Throwing exception when there is inheritance in Kotlin from Java class, which contains methods with the same JVM descriptors
• KT-36879 Introduce FIR_IDENTICAL in diagnostic tests
• KT-36881 FIR: completion don't runs for return expressions
• KT-36887 [FIR] Unresolved member in nested lambda in initializer
• KT-36905 [FIR] Unresolved in lambda in default argument position
• KT-36953 AssertionError: "Unsigned type expected: null" when there is a range with an unsigned type
• KT-37009 FIR: Bound smart-cast lost
• KT-37027 FIR: Wrong projection on spread + varargs on non-final types
• KT-37038 NI: redundant lambda's arrow breaks CST calculation for extension lambdas
• KT-37043 NI: inference T to Any? if there was elvis between Java out-type and reified materialize for this type without out projection
• KT-37066 [FIR] Wrong type inference for lambdas
• KT-37070 [FIR] Unresolved parameters of outer lambda in scope of inner lambda
• KT-37087 "IllegalStateException: Can't find method 'invoke()'" for mutable property reference in default value of an inline function parameter
• KT-37091 [FIR] Wrong inferred type of when-expression if when-argument is not-null-asserted and type is not specifies explicitly
• KT-37176 [FIR] Incorrect resolution mode for statements of block
• KT-37302 Unexpected conversion:Int constant inferred to Long in when expression
• KT-37327 FIR: Smartcast problem
• KT-37343 NI: definitely not null types pre-approximation is inconsistent with OI
• KT-37380 NI: broken some code with def not null types due to skip needed constraints
• KT-37419 NI: UNRESOLVED_REFERENCE_WRONG_RECEIVER is reported in case lambda with receiver is returned from when expression
• KT-37434 Kotlin/JS, Kotlin/Native: fun interfaces: SAM conversion to Kotlin interface is not compiled with RESOLUTION_TO_CLASSIFIER
• KT-37447 Expression from annotation entry in value parameter inside value parameter should be marked as USED_AS_EXPRESSION
• KT-37453 Type arguments not checked to be empty for candidates with no declared parameters
• KT-37488 [FIR] Incorrect exhaustiveness checking for branches with equals to object that implements sealed class
• KT-37497 NI: 'super' is not an expression, it can not be used as a receiver for extension functions
• KT-37530 NI: instantiation of abstract class via callable reference argument causes run time InstantiationError
• KT-37531 NI: callable reference argument with left hand side type parameter causes frontend exception
• KT-37554 NI: Nothing is inferred incorrectly with elvis return
• KT-37579 NI: inconsistent behaviour with OI around implicit invoke convention after safe call with additional implicit receiver
• KT-37604 "VerifyError: Call to wrong method" in 'invoke' for adapted callable reference to constructor with coercion to Unit
• KT-37621 NI: type variable is inferred to Nothing if the second branch was Nothing and there was upper bound for a type parameter
• KT-37626 NI: builder inference with expected type breaks class references resolution for a class with parameters
• KT-37627 NI: wrong order of the type variable fixation (Nothing? against a call with lambda)
• KT-37628 NI: wrong approximation of type argument to star projection during common super type calculation
• KT-37644 NI: appeared exception during incorporation of a captured type into a type variable for elvis resolve
• KT-37650 NI: it's impossible to infer a type variable with the participation of a wrapped covariant type
• KT-37718 False positive unused parameter for @JvmStatic main function in object
• KT-37779 ClassCastException: Named argument without spread operator for vararg parameter causes code to crash on runtime
• KT-37832 In MPP, subtypes of types defined in legacy libraries, like stdlib, cannot properly resolve on the consumer side receviing both
• KT-37861 Capturing an outer class instance in a default parameter of inner class constructor causes VerifyError
• KT-37986 Return value of function reference returning inline class mapped to 'java.lang.Object' is not boxed properly
• KT-37998 '!!' operator on safe call of function returning inline class value causes CCE at runtime
• KT-38042 Allow kotlin.Result as a return type only if one enabled inline classes explicitly
• KT-38134 NI: Type mismatch with a star projection and UnsafeVariance
• KT-38298 Inconsistent choice of candidate when both expect/actual are available (affects only enableGranularSourceSetMetadata)
• KT-38661 NI: "Cannot infer type variable TypeVariable" with lambda with receiver
• KT-38668 Project with module dependency in KN, build fails with Kotlin 1.3.71 and associated libs but passes with 1.3.61.
• KT-38857 Class versions V1_5 or less must use F_NEW frames.
• KT-39113 "AssertionError: Uninitialized value on stack" with EXACTLY_ONCE contract in non-inline function and lambda destructuring
• KT-28483 Override of generic-return-typed function with inline class should lead to a boxing
• KT-37963 ClassCastException: Value of inline class represented as 'java.lang.Object' is not boxed properly on return from lambda

Docs & Examples

• KT-35231 toMutableList documentation is vague

IDE

Performance Improvements

• KT-30541 EDT Freeze after new Kotlin Script creation
• KT-35050 Significant freezes due to findSdkAcrossDependencies()
• KT-37301 Freeze when "Optimize Imports" in KotlinImportOptimizer
• KT-37466 Invalidate partialBodyResolveCache on OCB
• KT-37467 PerFileAnalysisCache.fetchAnalysisResults
• KT-37993 Do not resolve references if paste code is located in the same origin
• KT-38318 Freezes in IDEA

Fixes

• KT-27935 Functional typealias with typealias in type parameters causes UnsupportedOperationException in TypeSignatureMappingKt (IDEA analysis)
• KT-31668 Complete statement for class declaration: add '()' to supertype
• KT-33473 UAST: References to local variable are resolved to UastKotlinPsiVariable
• KT-34564 Kotlin USimpleNameReferenceExpression for annotation parameter resolves to null for compiled Kotlin classes
• KT-34973 Light class incorrectly claiming ambiguous method call from Java when one overload is synthetic
• KT-35801 UAST: UnknownKotlinExpression for valid Kotlin annotated expression
• KT-35804 UAST: Annotations missing from catch clause parameters
• KT-35848 UAST: ClassCastException when trying to invoke UElement for some wrapped PsiElements
• KT-36156 Kotlin annotation attributes have blue color whereas white in Java
• KT-36275 UAST: UCallExpression::resolve returns null for local function calls
• KT-36717 Fix failing light class tests after switching plugin to language version 1.4
• KT-36877 Message bundles for copy paste are missed in 201
• KT-36907 IDE: -Xuse-ir setting on facet level does not affect highlighting
• KT-37133 UAST: Annotating assignment expression sometimes leads to UnknownKotlinExpression
• KT-37312 "Implement members" intention put function in the primary constructor if there are unused brackets in class
• KT-37613 Uast: no parameters in reified method
• KT-37933 Rare NPE in ProjectRootsUtilKt.isKotlinBinary [easy fix]
• KT-38081 Configure kotlin in project produces IDE error "heavy operation and should not be call on AWT thread"
• KT-38354 HMPP. IDE. Dependency leakage from leaf native to shared native module
• KT-38634 IDE: Error on opening MPP project in 1.3.72 after opening it in 1.4-M2

IDE. Code Style, Formatting

• KT-37870 "Remove trailing comma" action stops working after applying and cancelling it

IDE. Completion

• KT-36808 Delete Flow.collect from autocompletion list or make it least prioritized
• KT-36860 Provide convenient completion of extension functions from objects
• KT-37395 Invalid callable reference completion of member extension

IDE. Debugger

• KT-34906 Implement Coroutine Debugger
• KT-35392 Debugger omits meaningful part of the stacktrace even with disabled filter
• KT-36215 Coroutines debugger tab is empty in Android Studio
• KT-37238 Coroutines Debugger: dump creation fails every time
• KT-38047 Coroutines Debugger: Assertion failed: “Should be invoked in manager thread, use DebuggerManagerThreadImpl” on moving to source code from suspended coroutine in project without debugger jar in classpath
• KT-38049 Coroutines Debugger: NPE “null cannot be cast to non-null type com.sun.jdi.ObjectReference” is thrown by calling dumpCoroutines
• KT-38487 Any Field Watch interaction causes a MissingResourceException

IDE. Decompiler, Indexing, Stubs

• KT-37896 IAE: "Argument for @NotNull parameter 'file' of IndexTodoCacheManagerImpl.getTodoCount must not be null" through KotlinTodoSearcher.processQuery()

IDE. Gradle Integration

• KT-33809 With kotlin.mpp.enableGranularSourceSetsMetadata=true, IDE misses dependsOn-relation between kotlin and android sourceSets, leading to issues with expect/actual matching
• KT-36354 IDE: Gradle import from non-JVM projects: dependency to output artifact is created instead of module dependency
• KT-38037 UnsupportedOperationException on sync gradle Kotlin project with at least two multiplatform modules

IDE. Gradle. Script

• KT-36763 Drop modification stamp for scripts after project import
• KT-37237 Script configurations should be loaded during project import in case of errors
• KT-38041 Do not request for script configuration after VCS update

IDE. Inspections and Intentions

New Features

• KT-3262 Inspection "Inner class could be nested"
• KT-15723 Add 'Convert to value' quickfix for property containing only getter
• KT-34026 Add "Remove argument" quick fix for redundant argument in constructor call
• KT-34332 Add "Remove argument" quick fix for redundant argument in function call
• KT-34450 Convert function to property intention should be also displayed on fun keyword
• KT-34593 Invert 'if' condition: Invert String.isNotEmpty should be String.isEmpty
• KT-34819 Inspection: report useless elvis "?: return null"
• KT-37849 Support ReplaceWith for supertypes call

Performance Improvements

• KT-37515 Deadlock

Fixes

• KT-12329 "invert if" inserts unnecessary 'continue' for statement inside a loop with 'continue'
• KT-17615 "Convert parameter to receiver" changes this to this@ < no name provided >
• KT-20868 IntelliJ says method from anonymous inner class with inferred interface type is not used even though it is
• KT-20907 Secondary constructor is marked as unused by IDE when called by typealias
• KT-22368 "Convert to block body" intention incorrectly formats closing brace
• KT-23510 "Remove parameter" quick fix keeps lambda argument when it's out of parentheses
• KT-27601 False positive "Unused import directive" for extension function used in KDoc
• KT-28085 "Convert receiver to parameter" introduces incorrect this@class in lambda
• KT-30028 "Convert parameter to receiver" introduces wrong 'this' qualifier for extension lambda receiver
• KT-31601 "Remove redundant let call" changes semantics by introducing multiple safe calls
• KT-31800 False positive "never used" with function in private val object expression
• KT-31912 QF “Convert to anonymous object” do nothing on SAM-interfaces
• KT-32561 "Property can be declared in constructor" causes another warning
• KT-32809 Convert parameter to receiver inserts wrong qualifiers for this (when nothing needs to be changed)
• KT-34371 "Surround with lambda" quickfix is not available for suspend lambda parameters.
• KT-34640 Replace 'if' with 'when' leads to copy comment line above when from another if
• KT-36225 KNPE: CodeInliner.processTypeParameterUsages with ReplaceWith for inline reified generic function
• KT-36266 NPE when invoking Lift return out of if/when after intention becomes inapplicable but still beeing shown
• KT-36296 False negative "Redundant SAM-constructor" with multiple SAM arguments
• KT-36367 False negative "Redundant SAM-constructor" for kotlin functions
• KT-36368 False negative "Redundant SAM-constructor" for fun interfaces in kotlin
• KT-36395 False positive "Redundant SAM-constructor" with two java interfaces extending one another
• KT-36411 "Put parameters on separate lines" and "Put parameters on one line" actions do not respect trailing comma
• KT-36482 "Add JvmOverloads annotation" intention is still suggested for annotation's parameters
• KT-36686 Implement members quickfix puts the implementation before the data class if it already has a body
• KT-36685 "Convert to a range check" transform hex range to int if it is compared with "Less" or "Greater"
• KT-36707 False positive redundant companion object on calling companion object members
• KT-36735 Inspection 'Replace 'toString' with string template' miss curly braces and generates wrong code for constructor calls
• KT-36834 Convert use-site targets and usages with convert property to fun intention
• KT-37213 "Move to top level" intention does not update imports for extension functions
• KT-37496 False positive "Remove redundant backticks" for multiple underscores variable name
• KT-37502 False positive "redundant lambda arrow" with inline generic function with reified type in object and anonymous parameter name
• KT-37508 "Convert receiver to parameter" breaks code in anonymous objects (this@ < no name provided >)
• KT-37576 Kotlin InspectionSuppressor not being called for the kotlin's inspections
• KT-37749 "Convert to anonymous object" intention is suggested for Java SAM conversion, but not for Kotlin
• KT-37781 "Add modifier" intention/quickfix works incorrectly with functional interfaces
• KT-37893 i18n: Incorrect quickfix name "Lift return out of '"

IDE. KDoc

• KT-37361 Support for showing rendered doc comments in editor

IDE. Libraries

• KT-36276 IDE: references to declarations in JavaScript KLib dependency are unresolved
• KT-37562 IDE: references to JavaScript KLib dependency are unresolved, when project and library are compiled with "both" mode

IDE. Navigation

• KT-18472 UI lockup on find usages
• KT-18619 Find Usages of element used via import alias does not show actual usage location
• KT-34088 Navigate | Implementations action doesn't show implementations of Java methods in Kotlin files if method has parameters referring to generic type
• KT-35006 IDE: "Navigate to inline function call site" from stack trace for nested inline call navigates to outer inline call
• KT-36138 628 second freeze when doing Find Usages on data class property
• KT-36218 Show Kotlin file members in navigation bar
• KT-37494 AnnotatedElementsSearch unable to find annotated property accessor

IDE. Project View

• KT-32886 Project tool window: Show Visibility Icons does nothing for Kotlin classes
• KT-37632 IDE error on project structure opening

IDE. Refactorings

Performance Improvements

• KT-37801 Renaming private property with common name is very slow

Fixes

• KT-22733 Refactor / Inline Function: fun with type parameter: KNPE at CodeInliner.processTypeParameterUsages()
• KT-27389 MPP: Refactoring "Move Class" does not change the package declaration
• KT-29870 Inline variable doesn't handle 'when' subject val correctly
• KT-33045 Cover Move Refactoring by statistics (FUS)
• KT-36071 Refactoring: Move top declaration implementation refactoring
• KT-36072 Empty files are removed on Refactor/Move action with turned off "Delete empty source files" option
• KT-36114 java.lang.NoClassDefFoundError exception on Refactor/Move of kotlin function if it is referenced in java
• KT-36129 java.lang.Throwable: Invalid file exception occurs on Refactor/Move of class from kotlin script
• KT-36382 Move file refactoring breaks ktor application config
• KT-36504 "Extract property" suggests potentially invalid name for new property
• KT-37637 KotlinChangeSignatureUsageProcessor broke Change Signature in Python plugin
• KT-37797 Useless "Value for new paramater" step in 'Update usages to reflect signature changes' for method with default parameter value
• KT-37822 Improve message "Inline all references and remove the kind"
• KT-38348 UL methods return signature without generic type parameters
• KT-38527 Move nested class to upper level fails silently: MissingResourceException

IDE. Script

• KT-37765 NCDFE KJvmCompiledModuleInMemory on running *.main.kts script

IDE. Tests Support

• KT-36716 With kotlin.gradle.testing.enabled=true, gradle console output gets extra ijLog messages
• KT-36910 There are no Run/Debug actions in context menu for non-JVM platform-specific test results
• KT-37037 [JS, Debug] Node.JS test debug doesn't stop on breakpoints

IDE. Wizards

New Features

• KT-36150 New Project Wizard: provide a way to connect with "dependsOn" relation the added project modules
• KT-36179 New Project Wizard: it's impossible to make a JVM target friendly to Java code in a multiplatform project

Fixes

• KT-35583 New Project wizard: don't suggest build systems which cannot be used
• KT-35585 New Project wizard: remember choices which have sense for many projects
• KT-35691 New Project wizard: artifact and group values are effectively ignored
• KT-35693 New Project wizard creates pom.xml / build.gradle referring to release Kotlin version only
• KT-36136 New Project Wizard: generated projects are missing m2 Gradle repository
• KT-36137 New Project Wizard: "multiplatform" shall be written as a single word, without the capital P in the middle
• KT-36155 New Project Wizard: show warning "Multiplatform project cannot be generated" only for MPP projects
• KT-36162 New Project Wizard: make the error messages in modules editor actionable
• KT-36163 New Project Wizard: remove trailing spaces in Android SDK Path automatically
• KT-36166 New Project Wizard: addition of Android target into a multiplatform project doesn't add a necessary minimal Android configuration
• KT-36169 New Project Wizard: Android-related projects failed to build
• KT-36176 New Project Wizard: module templates doesn't work for multiplatform projects
• KT-36177 New Project Wizard: it's impossible to add more than one target of JVM kind to a multiplatform project
• KT-36180 New Project Wizard: it's impossible to set target JVM version for a JVM module
• KT-36226 New Project Wizard: add Mobile Android/iOS project template
• KT-36267 New Project Wizard: flatten JVM targets list for multiplatform projects
• KT-36328 New Project wizard fails for certain templates with AE: "Wrong line separators" at KotlinFormattingModelBuilder.createModel()
• KT-37599 New Project Wizard: Open Kotlin Wizard via hyperlink
• KT-37667 New project wizard: implement new UI design
• KT-37674 Kotlin version in build files includes the IDEA version
• KT-38061 New Project wizard 1.4: do not allow choosing build system if corresponding IJ plugin is disabled
• KT-38567 New Project wizard 1.4+: Improve processing case when project with required path already exists
• KT-38579 New Project wizard 1.4+: multiplatform mobile application: build fails on lint task: Configuration with name 'compileClasspath' not found
• KT-38929 New project wizard: update libraries in project template according to kotlin IDE plugin version
• KT-38417 Enable new project wizard by-default
• KT-38158 java.lang.NullPointerException when try to create new project via standard wizard on Mac os

JS. Tools

• KT-36484 KotlinJS, MPP: Compilation throws "TypeError: b is not a function" only in production mode

JavaScript

• KT-31126 Invalid JS constructor call (primary ordinary -> secondary external)
• KT-35966 Make @JsExport annotation usable in common code
• KT-37128 KJS: StackOverflowException when using reified recursive bound for type parameter
• KT-37163 KJS: NullPointerException on using intersection type as a reified one
• KT-37418 Support AssociatedObjectKey and findAssociatedObject in JS IR BE

Libraries

New Features

• KT-8658 Add property delegates which call get/set on the given KProperty instance, e.g. a property reference
• KT-12448 Make @Suppress applicable for type parameters
• KT-22932 String.format should support null locale
• KT-23514 assertFailsWith should link unexpected exception as cause
• KT-23737 JS & MPP: Support exception cause and addSuppressed
• KT-25651 Add shuffle() to Array, ByteArray, IntArray, etc to match MutableList
• KT-26494 Create an interface with provideDelegate()
• KT-27729 Inherit ReadWriteProperty from ReadOnlyProperty
• KT-28290 Add the onEach extension function to the Array
• KT-29182 SIZE_BYTES/BITS for Float and Double
• KT-30372 Add associateWith to Array
• KT-33906 Add vararg overloads for maxOf/minOf functions
• KT-34161 Array.contentEquals/contentHashCode/contentToString should allow null array receiver and argument
• KT-35851 Add setOfNotNull function
• KT-36866 reduceIndexedOrNull
• KT-36955 stdlib: Reverse range and sortDescending range
• KT-37161 Add #onEachIndexed similar to #forEachIndexed
• KT-37603 Throwable.stackTraceToString: string with detailed information about exception
• KT-37751 Implement shuffled() method Sequences
• KT-37804 Add 'fail' in kotlin-test that allows to specify cause
• KT-37839 StringBuilder.appendLine in stdlib-common
• KT-37910 Support Media Source Extension (MSE) and Encrypted Media Extensions (EME) in Kotlin/Js
• KT-38044 Common Throwable.printStackTrace

Performance Improvements

• KT-37416 readLine() is very slow

Fixes

• KT-13887 Double/Float companion values such as NaN should be constants
• KT-14119 String.toBoolean() should be String?.toBoolean()
• KT-16529 Names of KProperty's type parameters are inconsistent with ReadOnlyProperty/ReadWriteProperty
• KT-36356 Specify which element Iterable.distinctBy(selector) retains
• KT-38060 runningFold and runningReduce instead of scanReduce
• KT-38566 Kotlin/JS IR: kx.serialization & ktor+JsonFeature: SerializationException: Can't locate argument-less serializer for class

Reflection

• KT-29969 Support optional vararg parameter in KCallable.callBy
• KT-37707 "IllegalStateException: superInterface.classLoader must not be null" on class, which implements "AutoCloaseable" interface, "isAccessible" property changing

Tools. CLI

• KT-37090 file does not exist: C:\Users\NK\DOWNLO~1\kotlin-compiler-1.3.61\kotlinc\bin\..\lib\kotlin-compiler.jar" from standalone compiler on Windows

Tools. Gradle

• KT-35447 Warnings should be piped to stderr when using allWarningsAsErrors = true
• KT-35942 User test Gradle source set code cannot reach out internal members from the production code
• KT-36019 Implement Gradle DSL for explicit API mode

Tools. Gradle. JS

New Features

• KT-32017 Kotlin/JS in MPP: support changing the generated JS file name in Gradle DSL
• KT-32721 [Gradle, JS] CSS Support for browser
• KT-36843 [Gradle, JS, IR] Configure JS Compiler Type through DSL
• KT-37207 Allow to use npm dependency from a local directory
• KT-38056 [Gradle, JS] Group tasks by browser and node

Fixes

• KT-32466 kotlinNpmResolve fails in the case of composite build
• KT-34468 Consider custom versions while parsing yarn.lock
• KT-36489 [Gradle, JS, IR]: Correct naming for both compilers
• KT-36784 Kotlin. JS. MPP – Cannot find project :js when using Gradle composite builds
• KT-36864 KJS. Composite build require JS plugin in root project
• KT-37240 KJS. Nondeterministic execution order for webpack scripts (from folder 'webpack.config.d')
• KT-37582 Kotlin/JS: KotlinWebpack non-nullable properties are shown as nullable in Gradle configuration
• KT-37587 KJS. Karma ignore dynamically created webpack patches
• KT-37635 [Gradle, JS] Webpack devtool provide enum for only 2 variants
• KT-37636 [Gradle, JS] Extract package.json from klib
• KT-37762 [Gradle, JS] Actualize Node and Yarn versions in 1.4
• KT-37988 [Gradle, JS] Bump NPM versions on 1.4-M2
• KT-38051 [Gradle, JS] browserDistribution doesn't provide outputs
• KT-38519 JS Compiler per project without additional import

Tools. Gradle. Multiplatform

• KT-36674 allMetadataJar task fails if there is an empty intermediate source set in a multiplatform project with native targets
• KT-38746 In HMPP, compilation of a shared-native source set could be mistakenly disabled
• KT-39094 Provide a way to pass custom JVM args to commonizer from Gradle

Tools. Gradle. Native

• KT-25887 Kotlin Native gradle build fail with endorsed is not supported. Endorsed standards and standalone APIs on jdk > 8 & CLion
• KT-36721 Deduce a fully qualified unique_name in klib manifest from something like group name
• KT-37730 Native part of multiplatform build fails with "unresolved reference" errors if there is a local and external module with the same name
• KT-38174 Kotlin/Native: Disable platform libraries generation at the user side by default

Tools. J2K

Fixes

• KT-34965 Convert function reference copied from function call
• KT-35593 New J2K: method's names don't change between functions declared in Number.java and Number.kt
• KT-35897 J2K converts private enum constructors to internal constructors and produces NON_PRIVATE_CONSTRUCTOR_IN_ENUM error
• KT-36088 J2K: StackOverflowError when trying to convert Java class with recursive type bound
• KT-36149 J2K: PsiInvalidElementAccessException: Element class com.intellij.psi.impl.source.tree.CompositeElement of type DOT_QUALIFIED_EXPRESSION
• KT-36152 J2K: RuntimeException: Couldn't get containingKtFile for ktElement
• KT-36159 J2K: ClassCastException if constructor contains a super() call and class extends from Kotlin class
• KT-36190 J2K: Wrong property name generation when getter for non-boolean value starts with 'is'
• KT-36891 j2k: Fail with java.lang.NoClassDefFoundError when converting array
• KT-37052 new J2K: Java private function is converted to private open top-level function
• KT-37620 new J2K: IndexOutOfBoundsException (DefaultArgumentsConversion.applyToElement) with overloaded function with vararg parameter
• KT-37919 new J2K: Redundant line feeds when converting function

Tools. JPS

• KT-37159 A Typo (forgotten space) in build output in Circular dependencies warning description

Tools. Scripts

• KT-30086 ThreadDeath when running kotlin scripts using jsr223
• KT-37558 Scripts: implicit receivers don't work correctly when using CompiledScriptJarsCache
• KT-37823 Consecutive invocations of main.kts throw a KotlinReflectionNotSupportedError

1.4-M1

Compiler

New Features

• KT-4240 Type inference possible improvements: analyze lambda with expected type from the outer call
• KT-7304 Smart-casts and generic calls with multiple bounds on type parameters
• KT-7745 Support named arguments in their own position even if the result appears as mixed
• KT-7770 SAM for Kotlin classes
• KT-8834 Support function references with default values as other function types
• KT-10930 Expected type isn't taken into account for delegated properties
• KT-11723 Support coercion to Unit in callable reference resolution
• KT-14416 Support of @PolymorphicSignature in Kotlin compiler
• KT-16873 Support COERSION_TO_UNIT for suspend lambdas
• KT-17643 Inferring type of Pair based on known Map type
• KT-19869 Support function references to functions with vararg if expected type ends with repeated vararg element type
• KT-21178 Prohibit access of protected members inside public inline members
• KT-21368 Improve type inference
• KT-25866 Iterable.forEach does not accept functions that return non-Unit values
• KT-26165 Support VarHandle in JVM codegen
• KT-27582 Allow contracts on final non-override members
• KT-28298 Allow references to generic (reified) type parameters in contracts
• KT-31230 Refine rules for allowed Array-based class literals on different platforms: allow Array::class everywhere, disallow Array<...>::class on non-JVM
• KT-31244 Choose Java field during overload resolution with a pure Kotlin property
• KT-31734 Empty parameter list required on Annotations of function types
• KT-33990 Type argument isn't checked during resolution part
• KT-33413 Allow 'break' and 'continue' in 'when' statement to point to innermost surrounding loop
• KT-34743 Support trailing comma in the compiler
• KT-34847 Lift restrictions from kotlin.Result

Fixes

• KT-2869 Incorrect resolve with 'unsafe call error' and generics
• KT-3630 Extension property (generic function type) does not work
• KT-3668 Infer type parameters for extension 'get' in delegated property
• KT-3850 Receiver check fails when type parameter has another parameter as a bound
• KT-3884 Generic candidate with contradiction is preferred over matching global function
• KT-4625 Poor error highlighting when assigning not matched type to index operator
• KT-5449 Wrong resolve when functions differ only in the nullability of generic type
• KT-5606 "Type mismatch" in Java constructor call with SAM lambda and vararg parameter
• KT-6005 Type inference problem in sam constructors
• KT-6591 Overloaded generic extension function call with null argument resolved incorrectly
• KT-6812 Type inference fails when passing a null instead of a generic type
• KT-7298 Bogus type inference error in generic method call translated from Java
• KT-7301 Type inference error in Kotlin code translated from Java
• KT-7333 Type inference fails with star-projections in code translated from Java
• KT-7363 Kotlin code with star-projections translated from Java does not typecheck
• KT-7378 3-dimension array type inference fail
• KT-7410 Call resolution error appears only after adding non-applicable overload
• KT-7420 Type inference sometimes infers less specific type than in Java
• KT-7758 Type of lambda can't be infered
• KT-8218 Wrong 'equals' for generic types with platform type and error type
• KT-8265 Non-typesafe program is compiled without errors
• KT-8637 Useless diagnostics for type parameters with unsafe nullability
• KT-8966 Smart casts don't work with implicit receiver and extension on type parameter with bounds
• KT-10265 Type inference problem when using sealed class and interfaces
• KT-10364 Call completeCall on variable before invoke resolution
• KT-10612 java.util.Comparator.comparing type inference
• KT-10628 Wrong type mismatch with star projection of inner class inside use-site projected type
• KT-10662 Smartcast with not-null assertion
• KT-10681 Explicit type arguments not taken into account when determining applicable overloads of a generic function
• KT-10755 Not "least" common super-type is selected for nested 'if' result in presence of multiple inheritance
• KT-10929 Type inference based on receiver type doesn't work for delegated properties in some cases
• KT-10962 Wrong resolution when argument has unstable DataFlowValue
• KT-11108 RxJava failed platform type inference
• KT-11137 Java synthetic property does not function for a type with projection
• KT-11144 UninferredParameterTypeConstructor exception during build
• KT-11184 Type inference failed for combination of safe-call, elvis, HashSet and emptySet
• KT-11218 Type inference incorrectly infers nullable type for type parameter
• KT-11323 Type inference failed in call with lambda returning emptyList
• KT-11331 Unexpected "Type inference failed" in SAM-conversion to projected type
• KT-11444 Type inference fails
• KT-11664 Disfunctional inference with nullable type parameters
• KT-11894 Type substitution bug related platform types
• KT-11897 No error REIFIED_TYPE_FORBIDDEN_SUBSTITUTION on captured type
• KT-11898 Type inference error related to captured types
• KT-12036 Type inference failed
• KT-12038 non-null checks and inference
• KT-12190 Type inference for TreeMap type parameters from expected type doesn't work when passing comparator.
• KT-12684 A problem with reified type-parameters and smart-casts
• KT-12833 'it' does not work in typed containers of lambdas
• KT-13002 "Error type encountered: UninferredParameterTypeConstructor" with elvis and when
• KT-13028 cast with star on on type with contravariant generic parameter makes the compiler crash
• KT-13339 Type inference failed for synthetic Java property call on implicit smart cast receiver
• KT-13398 "Type T is not a subtype of Any"
• KT-13683 Type inference incorporation error when passed null into not-null parameter
• KT-13721 Type inference fails when function arguments are involved
• KT-13725 Type inference fails to infer type with array as a generic argument
• KT-13800 Type inference fails when null passed as argument (related to common system)
• KT-13934 Callable reference to companion object member via class name is not resolved
• KT-13964 Unknown descriptor on compiling invoke operator call with generic parameter
• KT-13965 Invoke operator called on extension property of generic type has incorrect parameter type
• KT-13992 Incorrect TYPE_INFERENCE_UPPER_BOUND_VIOLATED
• KT-14101 Type inference failed on null
• KT-14174 Compiler can't infer type when it should be able to
• KT-14351 Internal error with uninferred types for compiling complicated when expression
• KT-14460 Smartcast isn't considered as necessary in the last expression of lambda
• KT-14463 Missing MEMBER_PROJECTED_OUT error after smartcast with invoke
• KT-14499 Type inference fails even if we specify T explicitly
• KT-14725 kotlin generics makes agera's compiled repositories unusable
• KT-14803 Weird smart cast absence in lazy delegate
• KT-14972 Type inference failed: wrong common supertype for types with several subtypes
• KT-14980 Type inference for nullable type in if statement
• KT-15155 False "No cast needed" warning for conversion to star-projected type
• KT-15185 Inference for coroutines not work in case where we have suspend function with new coroutine inside
• KT-15263 Kotlin can't infer the type of a multiple bounded method
• KT-15389 Type inference for coroutines in 1.1-M04
• KT-15394 Support coercion to Unit for last statement for suspend lambda
• KT-15396 Type inference for last statement in coroutine
• KT-15488 Type inference not working on generic function returning generic type in lambda result
• KT-15648 Better use of overladed functions with nullables
• KT-15922 TYPE_INFERENCE_CONFLICTING_SUBSTITUTION for function reference
• KT-15923 Internal error: empty intersection for types
• KT-16247 Overload resolution ambiguity with intersection types and method references
• KT-16249 Can't call generic method with overloaded method reference when non-generic overload exists
• KT-16421 Remove @ParameterName annotation from diagnostic messages
• KT-16480 Wrong "Type mismatch" for variable as function call
• KT-16591 Type inferencing doesn't consider common base class of T of multiple Foo function parameters
• KT-16678 Overload resolution ambiguity on println()
• KT-16844 Recursive dependency] (DeferredType) error on code generation.
• KT-16869 Cannot infer type parameter S in fun <S, T : S?> f(x: S, g: (S) -> T): T
• KT-17018 "Rewrite at slice LEXICAL_SCOPE" for 'when' with function reference inside lambda
• KT-17048 Compilation exception: error type encountered in some combination of when/elvis with multiple inheritance
• KT-17340 Type inference failed on overloaded method reference with expected KFunction
• KT-17386 Smart cast on LHS of callable reference doesn't work if expected type is nullable
• KT-17487 ReenteringLazyValueComputationException for interface with a subclass that has a property of interface type
• KT-17552 Call completed not running for elvis as last expression in lambda
• KT-17799 Smart cast doesn't work for callable reference (colon-colon operator)
• KT-17968 More type inference problems with Streams.collect
• KT-17995 No type mismatch with empty when expression inside lambda
• KT-18002 Issue with star projection for generic type with recursive upper bound
• KT-18014 Cannot use Comparator.comparing
• KT-18080 Type inference failed for generic method reference argument
• KT-18192 Type inference fails for some nested generic type structures
• KT-18207 Unexpected attempt to smart cast causes compile error
• KT-18379 Type inference failed although explicit specified
• KT-18401 Type mismatch when inferring out type parameter (related to callable reference)
• KT-18481 ReenteringLazyValueComputationException for recursive const declaration without explicit type
• KT-18541 Prohibit "tailrec" modifier on open functions
• KT-18790 function take the parameterized type with multi-bounds can't working
• KT-19139 Kotlin build error in Android Studio on << intent.putExtra(“string”, it.getString(“string”) >> inside "else if" block
• KT-19751 Nested conditionals break type inference when multiple types are possible for the expression
• KT-19880 An overload with nullable parameter is not resolved due to a smart cast attempt after assignment
• KT-19884 type inference with type parameter
• KT-20226 Return type 'Any' inferred for lambda with early return with integer literal in one of possible return values
• KT-20656 Callable reference breaks smart cast for next statement
• KT-20734 Invalid "Smart-cast impossible" when there are applicable extension and semi-applicable member
• KT-20817 Coroutine builder type inference does not take smart casts into account (confusing)
• KT-21060 ReenteringLazyValueComputationException during type inference
• KT-21396 if-else with a branch of type Nothing fails to infer receiver type
• KT-21463 Compiler doesn't take into accout a type parameter upper bound if a corresponding type argument is in projection
• KT-21607 Type inference fails with intermediate function
• KT-21694 Type inference failed for ObservableList
• KT-22012 Kotlin type deduction does not handle Java's <? super T> constructs
• KT-22022 ReenteringLazyValueComputationException when having cyclic references to static variables
• KT-22032 Multiple type parameter bounds & smart casts
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-22070 Type inference issue with platform types and SAM conversion
• KT-22474 Type safety problem because of incorrect subtyping for intersection types
• KT-22636 Anonymous function can be passed as a suspending one, failing at runtime
• KT-22723 Inconsistent behavior of floating-point number comparisons
• KT-22775 Type inference failed when yielding smartcasted not null value from sequence
• KT-22885 Broken type safety with function variables caused by wrong subtyping check that includes intersection types
• KT-23141 Cannot resolve between two functions when only one of them accepts nullable parameter
• KT-23156 IDEA asking me to remove uninferable explicit type signature
• KT-23391 Bogus type inference error with smart cast, synthetic property and star projection
• KT-23475 Implicit invoke on property with generic functional return type resolves incorrectly
• KT-23482 Incorrect frontend behaviour for not inferred type for generic property with function type as result
• KT-23677 Incorrect error diagnostic for return types that coerced to 'Unit' inside lambda
• KT-23748 Erroneous type mismatch when call with @Exact annotation depends on non-fixed type variable
• KT-23755 Nested lambdas with nested types can cause false USELESS_CAST warning
• KT-23791 Explicit type argument leads to an error, while candidate is picked correctly without it
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24143 Type-checking error for generic functions
• KT-24217 Type inference for generic functions reference problem.
• KT-24237 Uninferred type parameter on variable with multiple smart casts in elvis
• KT-24317 Unnecessary non-null assertion inspection shown
• KT-24341 Compiler exception instead of error about "upper bound violated"
• KT-24355 Overload resolution ambiguity due to unstable smartcast
• KT-24458 Cannot solve “Conditional branch result is implicitly cast to Any” with List
• KT-24493 Incorrect error about Array unsupported
• KT-24886 Type inference failure in an if-else_if-else
• KT-24918 type inference not good enough for return type with involved if statement
• KT-24920 Type inference failure when using RxJava compose
• KT-24993 Inference for buildSequence/yield doesn't work for labeled lambdas
• KT-25063 List of Arrays - wrong type inferred if nullable involved
• KT-25268 Incorrect type inference (least upper bound of the types) in exhaustive when for Number
• KT-25294 Reactors Mono map function with Kotlin
• KT-25306 Make f(a = arrayOf(x)) equivalent to f(a = *arrayOf(x))
• KT-25342 Type inference: lazy with generic fails to infer
• KT-25434 Too eager smartcast cause type mismatch
• KT-25585 "Rewrite at slice LEXICAL_SCOPE" for if expression with callable reference inside lambda
• KT-25656 Short-hand array literal notation type inference fails in nested annotations
• KT-25675 return when leads to compiler error
• KT-25721 Type inference does not work in nested try catch
• KT-25827 NullPointerException in setResultingSubstitutor with a generic base class
• KT-25841 Collection type is inferred as Collection if the values returned from map function have an intersection common type
• KT-25942 Pass a parameter to generic function with several upper bounds
• KT-26157 Failed type inference for Delegates.observable parameter with a nullable property
• KT-26264 No smart cast on implicit receiver extension function call
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26698 OnlyInputTypes doesn't work in presence of upper bound constraint
• KT-26704 Correct variable-as-function call fails to compile in case of function type dependent on variable type
• KT-27440 Infer lambda parameter type before lambda analysis in common system
• KT-27464 False negative type mismatch when a non-null assertion is used on a top-level var mutable variable
• KT-27606 Incorrect type inference when common supertype of enum classes is involved
• KT-27722 mapNotNull on List<Result> fails if T is not subtype of Any
• KT-27781 ReenteringLazyValueComputationException for anonymous object property referring to itself in overridden method
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28083 Nothing-call smart cast of a variable that a lambda returns does not affect the lambda's return type
• KT-28111 Type inference fails for return type of lambda with constrained generic
• KT-28242 Not-null assertion operator doesn't affect smartcast types
• KT-28264 Resulting type of a safe call should produce type that is intersected with Any
• KT-28305 "Error type encountered" with elvis operator, type argument and explicit Any type
• KT-28319 "resultingDescriptor shouldn't be null" for a star projection base class
• KT-28334 Smartcast doesn't work if original type is type with star projection and there was already another smartcast
• KT-28370 Var not-null smartcasts are wrong if reassignments are used inside catch section (in try-catch) or try section (in try-finally)
• KT-28424 Type annotations are not analyzed properly in several cases
• KT-28584 Complex condition fails smart cast
• KT-28614 "Error type encountered: UninferredParameterTypeConstructor"
• KT-28726 Recursion in type inference causes ReenteringLazyValueComputationException
• KT-28837 SAM conversion doesn't work for arguments of members imported from object
• KT-28873 Function reference resolution ambiguity is not reported
• KT-28999 Prohibit type parameters for anonymous objects
• KT-28951 "Error type encountered" with elvis operator, type argument and explicit Any type
• KT-29014 Unclear diagnostic for conditional branches coercion with multiple root interfaces and no common superclass
• KT-29079 ByteArray.let(::String) can not compile as the callable reference is resolved before the outer call
• KT-29258 Incorrect return type is used for analysis of an extension lambda (if its type is used as a generic parameter)
• KT-29330 NI: Multiple duplicate error messages in IDE popup with lambda argument
• KT-29402 Missed INLINE_FROM_HIGHER_PLATFORM diagnostic if inline function called from Derived class
• KT-29515 type inference fails to infer T of KFunction0 for most types
• KT-29712 Incorrect compiler warning, "No cast needed" for recursive type bound
• KT-29876 ReenteringLazyValueComputationException with usage of property inside lambda during assignment to that property
• KT-29911 Not-null smart cast fails inside inline lambda after safe call on generic variable with nullable upper bound
• KT-29943 Callable reference resolution ambiguity between a property and a function is reported incorrectly in function calls expecting KProperty1
• KT-29949 Cannot chose among overload as soon as nullable type is involved
• KT-30151 Any instead of Number is inferred as common super type of Int and Double
• KT-30176 Compiler can't infer correct type argument which blocks overload resolution
• KT-30240 Can't infer intersection type for a type variable with several bounds
• KT-30278 Retain star projections in typeOf
• KT-30394 Different behaviour in type inferences (bug in the old inference) when cast of variable of nullable type parameter to not-null is used
• KT-30496 Wrong infix generic extension function is chosen for null receiver
• KT-30550 Suspend modifier on a functional type changes resolution of return type
• KT-30892 IllegalStateException(UninferredParameterTypeConstructor) with return references to local function from if-else expression
• KT-30947 No smart cast on accessing generic class member with upper-bounded type argument
• KT-31102 Type mismatch in mixing lambda and callable reference
• KT-31151 "IllegalStateException: Error type encountered" with elvis, when and inheritance
• KT-31219 Type mismatch for delegated property depending on anonymous object
• KT-31290 overload resolution ambiguity with Iterable.mapTo()
• KT-31352 JvmName can't eliminate platform declaration clash of annotated properties
• KT-31532 Type inference for complex last expression in lambda
• KT-31540 Change initialization order of default values for tail recursive optimized functions
• KT-31594 No SETTER_PROJECTED_OUT diagnostic on synthetic properties from Java
• KT-31630 TYPE_INFERENCE_PARAMETER_CONSTRAINT_ERROR for generic function with callable reference argument
• KT-31654 False unnecessary non-null assertion (!!) warning inside yield call
• KT-31679 NI: Unresolved reference with delegated property and anonymous object
• KT-31739 Overload resolution ambiguity in generic function call with lambda arguments that take different parameter types
• KT-31923 Outer finally block inserted before return instruction is not excluded from catch interval of inner try (without finally) block
• KT-31968 New inference is using a more common system to infer types from nested elvis call than OI
• KT-31978 NI: changed precedence of elvis operator relative to equality operator
• KT-32026 Infer return type of @PolymorphicSignature method to void if no expected type is given
• KT-32087 "Remove explicit type arguments" inspection when function creates a lambda that calls a function with type argument
• KT-32097 NI: NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE when using awaitClose in channelFlow builder
• KT-32098 Kotlin 1.3.40 type inference mismatch between the IDE and the compiler
• KT-32151 Return arguments of lambda are resolved in common system while in OI aren't
• KT-32165 Cannot use 'Nothing' as reified type parameter,
• KT-32196 Inconsistency between compiler and inspection with mapNotNull
• KT-32203 NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE warning false-positive
• KT-32249 New inference breaks generic property delegate resolution
• KT-32250 New Type Inference fails for nullable field
• KT-32262 Type inference failed in presence of @JvmSuppressWildcards
• KT-32267 NI: "Overload resolution ambiguity. All these functions match." with KFunction
• KT-32284 False positive "Redundant lambda arrow" with extension function returning generic with lambda type argument
• KT-32290 New Inference: old inference fails on nullable lambda from if-expression
• KT-32306 False positive Remove explicit type arguments when using generic return argument from lambda for delegated property
• KT-32358 NI: Smart cast doesn't work with inline function after elvis operator
• KT-32383 NI: listOf(…) infers to invalid type if different enums implementing the same interface are involved
• KT-32397 OI can't infer types when there are different lower and upper bounds in common system
• KT-32399 OI can't choose candidate with different lower and upper bounds
• KT-32425 No coercion to Unit by a return type of callable expression argument
• KT-32431 Nothing inferred for upper bound in parametric class
• KT-32449 IDE fails to report error: Expected type mismatch
• KT-32462 NI: "AssertionError: No resolved call" with callable reference
• KT-32497 Compiler Type inference fails when inferring type parameters ("Generics") - IDE inference works
• KT-32507 IntelliJ Kotlin plugin not recognizing smart cast to non-nullable type
• KT-32501 type inference should infer nullable type if non-nullable doesn't work
• KT-32527 Cast required for Sequence.map when mapping between disjoint types
• KT-32548 OVERLOAD_RESOLUTION_AMBIGUITY with platform generic types
• KT-32595 NI: Overload resolution ambiguity for member function with type parameter with upper bounds and lambda parameter
• KT-32598 Kotlin 1.3.41 type inference problem
• KT-32654 Non-applicable call for builder inference with coroutines
• KT-32655 Kotlin compiler and IDEA plugin disagree on type
• KT-32686 New type inference algorithm infers wrong type when return type of when expression has a type parameter, and it's not specified in all cases
• KT-32788 No smartcast for an implicit "this" in old inference
• KT-32792 Bug in new type inference algorithm for Android Studio
• KT-32800 Problem with inlined getValue in Delegates, IDEA does not detect problem, but code doesn't compile
• KT-32802 Odd behaviour with smart-casting in exception block
• KT-32850 Invalid suggestion in Kotlin code
• KT-32866 tests in Atrium do not compile with new type inference
• KT-33012 Proper capturing of star projections with recursive types
• KT-33102 Fake overrides aren't created for properties
• KT-33152 Type inference fails when lambda with generic argument type is present
• KT-33166 NI: TYPE_MISMATCH for specific case with when expression and one branch throwing exception
• KT-33171 TYPE_INFERENCE_NO_INFORMATION_FOR_PARAMETER with object convention invoke direct call on property delegation
• KT-33240 Generated overloads for @JvmOverloads on open methods should be final
• KT-33545 NI: Error type encountered: NonFixed: TypeVariable(T) (StubType)
• KT-33988 Low priority candidates doesn't match when others fail
• KT-34128 Internal compiler error ReenteringLazyValueComputationException in the absence of right parenthesis
• KT-34140 Function with contract doesn't smartcast return value in lambda
• KT-34314 There is no an error diagnostic about type inference failed (impossible to infer type parameters) on callable references
• KT-34335 A lambda argument without a type specifier is inferred to Nothing, if it's passed to a function, declaration of which contains vararg (e.g. Any)
• KT-34501 if-expression infers Any when Number? is expected
• KT-34708 Couldn't transform method node: emit$$forInline (try-catch in a Flow.map)
• KT-34729 NI: type mismatch error is missed for generic higher-order functions
• KT-34830 Type inference fails when using an extension method with "identical JVM signature" as method reference
• KT-34857 "Illegal resolved call to variable with invoke" with operator resolved to extension property invoke
• KT-34891 CompilationException: Failed to generate expression: KtLambdaExpression (Error type encountered)
• KT-34925 MPP, IDE: False positive warning NO_REFLECTION_IN_CLASS_PATH in common code
• KT-35020 "Type checking has run into a recursive problem" for overloaded generic function implemented using expression body syntax
• KT-35064 NI: The new inference has overload resolution ambiguity on passing a callable reference for extension functions (> 1 candidates)
• KT-35207 Incorrect generic signature in annotations when KClass is used as a generic parameter
• KT-35210 NI: OnlyInputTypes check fails for types with captured ones
• KT-35213 NI: overload resolution ambiguity for callable reference with defined LHS
• KT-35226 Forbid spread operator in signature-polymorphic calls
• KT-35306 Non-applicable call for builder inference for nested builder functions which return generic types that are wrapped.
• KT-35337 IllegalStateException: Failed to generate expression: KtLambdaExpression
• KT-35398 NI, IDE: Duplicate warning message JAVA_CLASS_ON_COMPANION in argument position
• KT-35469 Change behavior of signature-polymorphic calls to methods with a single vararg parameter, to avoid wrapping the argument into another array
• KT-35487 Type safety problem because of lack of captured conversion against nullable type argument
• KT-35494 NI: Multiple duplicate error diagnostics (in IDE popup) with NULL_FOR_NONNULL_TYPE
• KT-35514 Type inference failure with out type and if-else inside lambda
• KT-35517 TYPE_MISMATCH error duplication for not Boolean condition in if-expression
• KT-35535 Illegal callable reference receiver allowed in new inference
• KT-35578 Diagnostics are sometimes duplicated
• KT-35602 NI doesn't approximate star projections properly for self types
• KT-35658 NI: Common super type between Inv<A!>, Inv<A?> and Inv is Inv<out A?>, not Inv<A!> (as old inference)
• KT-35668 NI: the lack of fixing to Nothing problem (one of the bugs: the lack of smartcast through cast of Nothing? to Nothing after elvis)
• KT-35679 Type safety problem because several equal type variables are instantiated with a different types
• KT-35684 NI: "IllegalStateException: Expected some types" from builder-inference about intersecting empty types on trivial code
• KT-35814 Inference fails to infer common upper type for java types
• KT-35834 Do not declare checked exceptions in JVM bytecode when using delegation to Kotlin interfaces
• KT-35920 NI allows callable references prohibited in old inference
• KT-35943 NI: IllegalStateException: No error about uninferred type parameter
• KT-35945 Using Polymorphism and Type Inference the compiler fails having a Type with Type with Type
• KT-35992 Wrong overload resolution with explicit type arguments if KFunction and type parameter once nullable and once non-nullable
• KT-36001 "IllegalStateException: Error type encountered" with elvis in generic function
• KT-36002 KotlinFrontEndException: Exception while analyzing expression
• KT-36065 Type inference failed for generic function invoked on implicitly nullable variable created from Java
• KT-36066 Type inference problem in compiler
• KT-36101 False positive IMPLICIT_NOTHING_AS_TYPE_PARAMETER with suspend lambdas
• KT-36146 Drop support of language version 1.0/1.1, deprecate language version 1.2
• KT-36192 Redundant smart cast for overloaded functions
• KT-36202 NI: false positive "NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE" with elvis operator in lambda
• KT-36220 NI: false positive NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE if one use cannot resolve
• KT-36221 NI: UnsupportedOperationException: "no descriptor for type constructor" with vararg parameter when set or get methods of element passed as function reference
• KT-36264 NI: unstable smart cast changes results of call resolution
• KT-36279 OI: Type inference fails when omitting explicit name of the lambda parameter
• KT-36298 Failure to resolve return type of extension property on function literal
• KT-36317 TYPE_MISMATCH diagnostic error duplication for not Boolean condition in do-while-loop-statement
• KT-36338 Forbid IR backend usage with unsupported language / API version
• KT-36371 Incorrect null check with NI and builder inference in generic context
• KT-36644 Stop discrimination of prerelease compiler version in Kotlin plugin
• KT-36745 NI: "Expected some types" with unresolved class reference
• KT-36776 Treat special constructions (if, when, try) as a usual calls when there is expected type
• KT-36818 NI: the lack of smartcast from Nothing returning "when" branch
• KT-37123 Cycling lambda signature errors in Observable.combineLatest
• KT-37146 Type inference can't resolve plus operator
• KT-37189 Wrong type inferred with class with two types as argument
• KT-37295 NI: Passing function with wrong returning type by reference is not shown as error
• KT-37345 Wrong non-null type assertion when using Sequence and yield
• KT-37429 Type inference failed: Not enough information to infer parameter with java streams
• KT-37480 "None of the following candidates can be called" when compiling but no error in IDEA

IDE

• KT-33573 IDE runs platform-specific checkers on common code even if the project doesn't target the corresponding platform
• KT-35823 IDE settings: deprecated values of language / API version look like regular ones
• KT-35871 NPE in LightMethodBuilder
• KT-36034 Kotlin 1.3.70 creates file kotlinCodeInsightSettings.xml with user-level settings under .idea
• KT-36084 "Join lines" should remove trailing comma
• KT-36460 IDE highlighting: Undo on inspection breaks analysis inside top-level property initializer
• KT-36712 Use new annotation highlighting API
• KT-36917 Caret has incorrect position after pressing enter on line with named argument

IDE. Code Style, Formatting

• KT-36387 Formatter: "Chained Function Calls" formats property chains
• KT-36393 Incorrect trailing comma insertion for boolean operator expression
• KT-36466 Formatter: "Chained Function Calls" with "Wrap first call" wrap single method call

IDE. Completion

• KT-16531 Error type displayed in completion for the result of buildSequence
• KT-32178 Autocompletion of 'suspend' should not add the 'fun' keyword when writing a function type
• KT-34582 Remove kotlin.coroutines.experimental from autocompletion
• KT-35258 Completion problems with enabled MixedNamedArgumentsInTheirOwnPosition feature

IDE. Debugger

• KT-12016 Step over inside inline function lambda argument steps into inline function body
• KT-14296 Can't step over inlined functions of iterator
• KT-14869 Debugger: always steps into inlined lambda after returning from function
• KT-15652 Step over inline function call stops at Thread.dispatchUncaughtException() in case of exceptions
• KT-34905 Debugger: "Step over" steps into inline function body if lambda call splitted on several lines
• KT-35354 ClassCastException in evaluate window

IDE. Gradle. Script

• KT-36703 .gradle.kts: Change text for out of project scripts

IDE. Hints

• KT-37537 IDE is missing or swallowing keystrokes when hint popups are displayed

IDE. Hints. Parameter Info

• KT-14523 Weird parameter info tooltip for map.getValue type arguments

IDE. Inspections and Intentions

New Features

• KT-33384 Intention to switch between single-line/multi-line lambda
• KT-34690 Support intention Convert lambda to reference for qualified references
• KT-35639 False negative inspection "redundant internal modifier" inside private class
• KT-36256 Implement migration for WarningOnMainUnusedParameter
• KT-36257 Implement migration for ProhibitRepeatedUseSiteTargetAnnotations
• KT-36258 Implement migration for ProhibitUseSiteTargetAnnotationsOnSuperTypes
• KT-36260 Implement migration for ProhibitJvmOverloadsOnConstructorsOfAnnotationClasses
• KT-36261 Implement migration for ProhibitTypeParametersForLocalVariables
• KT-36262 Implement migration for RestrictReturnStatementTarget

Fixes

• KT-14001 "Convert lambda to reference" results in failed type inference
• KT-14781 Import of aliased type is inserted when deprecation replacement contains typealias
• KT-16907 "Convert to lambda reference" intention is erroneously shown for suspending lambda parameters, producing bad code
• KT-24869 False positive inspection "Redundant 'suspend' modifier"
• KT-24987 Implicit (unsafe) cast from dynamic to DONT_CARE
• KT-27511 "Remove explicit type arguments" suggestion creates incorrect code
• KT-28415 False positive inspection "Remove explicit type arguments" with a callable reference
• KT-30831 False positive Remove explicit type arguments with generic type constructor with init block
• KT-31050 False positive "Boolean literal argument without parameter name" inspection using expect class
• KT-31559 Type inference failed: Not enough information to infer parameter K
• KT-32093 NI: IDE suggests to use property access syntax instead of getter method
• KT-33098 False positive "Remove explicit type arguments" with "Enable NI for IDE" and Java generic class constructor invocation with nullable argument
• KT-33685 ReplaceWith does not add type parameter for function taking generic lambda with receiver
• KT-34511 kotlin.KotlinNullPointerException after using intention Replace Java Map.forEach with Kotlin's forEach for Map with Pairs as keys
• KT-34686 False positive "Constructor parameter is never used as a property" if property is used as a reference
• KT-35451 Type inference fails after applying false positive inspection "Remove explicit type arguments "
• KT-35475 Applying intention "Redundant curly braces in string template" for label references change semantic
• KT-35528 Intention Replace 'when' with 'if' produces wrong code if expression subject is a variable declaration
• KT-35588 Applying "Lift assignment out of 'if'" for if statement that has lambda plus assignment and 'return' leads to type mismatch
• KT-35604 Too long quickfix message for "modifier 'open' is not applicable to 'companion object'"
• KT-35648 False negative intention "Remove argument name" on named positional arguments
• KT-36160 False positive "Constructor has non-null self reference parameter" with vararg parameter of class
• KT-36171 intention "Replace 'get' call with indexing operator" works incorrectly with spread operator
• KT-36255 Implement migration tool for 1.4
• KT-36357 "Lift assignment out of 'if'" breaks code for oneliner function
• KT-36360 OI: False positive "remove explicit type arguments" for SequenceScope leads to compiler failure with "Type inference failed"
• KT-36369 "To raw string literal" intention is not available if string content starts with newline symbol \n

IDE. Multiplatform

• KT-36978 Infinite "org.jetbrains.kotlin.idea.caches.resolve.KotlinIdeaResolutionException: Kotlin resolution encountered a problem while analyzing KtFile" exceptions in hierarchical multiplatform projects

IDE. Navigation

• KT-30628 Navigation from Java sources to calls on Kotlin function annotated with @JvmOverloads that have optional arguments omitted leads to decompiled code

IDE. Refactorings

New Features

• KT-26999 Inspection for unused main parameter in Kotlin 1.3
• KT-33339 Refactor / Move is disabled for Kotlin class selected together with Kotlin file

Fixes

• KT-22131 "Extract method" refactoring treats smart casted variables as non-local
• KT-24615 "Extract property" generates useless extension property
• KT-26047 Refactor -> Rename: Overridden method renaming in generic class doesn't rename base method
• KT-26248 "Refactor -> Inline variable" breaks callable references
• KT-31401 Refactor / Inlining function reference in Java method with Runnable argument produces compile error
• KT-33709 Inline variable: NONE_APPLICABLE with overloaded generic Java method with SAM conversion
• KT-34190 Inline Function: False positive error "not at the end of the body" with anonymous object
• KT-35235 Unable to move multiple class files to a different package
• KT-35463 ClassCastException during moving .kt file with one single class to the other folder in Android Studio
• KT-36312 Refactor Move refactoring to get it ready for MPP-related fixes

IDE. Run Configurations

• KT-34503 "Nothing here" is shown as a drop-down list for "Run test" gutter icon for a multiplatform test with expect/actual parts in platform-agnostic code
• KT-36093 Running Gradle java tests are broken for Gradle older than 4.0 (Could not set unknown property 'testClassesDirs' for task ':nonJvmTestIdeSupport')

JavaScript

• KT-23284 Reified type arguments aren't substituted when invoking inline val value

Libraries

• KT-26654 Remove deprecated 'mod' operators
• KT-27856 Add contracts to Timing.kt lambdas
• KT-28356 Fail fast in Regex.findAll on an invalid startIndex
• KT-29748 Declare kotlin.reflect.KType in kotlin-stdlib-common
• KT-30360 Deprecate conversions of floating point types to integral types lesser than Int
• KT-32855 KTypeParameter is available in common code, but not available in Native
• KT-35216 <T : AutoCloseable?, R> T.use and <T : Closeable?, R> T.use should have contracts
• KT-36082 JS Regex.find does not throw IndexOutOfBoundsException on invalid start index
• KT-36083 Extract kotlin.coroutines.experimental.* packages to a separate compatibility artifact

Reflection

• KT-30071 Implement KTypeProjection.toString
• KT-35991 Embed Proguard/R8 rules in kotlin-reflect artifact jar

Tools. CLI

• KT-28475 java.sql module not available in kotlinc scripts on Java 9+ due to use of Bootstrap Classloader

Tools. Gradle. JS

• KT-34989 NodeJs is not re-downloaded if the node binary gets accidentally deleted
• KT-35465 Gradle, JS: Gradle tooling for IR compiler
• KT-36472 Kotlin/JS Gradle plugin iterates over all Gradle tasks, triggering their lazy configuration
• KT-36488 Gradle, JS, IR: Publishing from JS plugin

Tools. Gradle. Multiplatform

• KT-37264 In intermediate common source sets, internals are not visible from their dependsOn source sets during Gradle build

Tools. Gradle. Native

• KT-36804 In a project with Kotlin/Native targets and kotlinx.serialization, IDE import fails: Could not create task '...'. / Cannot change dependencies of configuration after it has been resolved.

Tools. J2K

• KT-20120 J2K: Java 9 forRemoval and since methods of Deprecated are not processed

Tools. Scripts

• KT-35414 Switch for -Xexpression to -expression/-e cli argument syntax for JVM cli compiler in 1.4

1.3.72

Compiler

• KT-37107 kotlinc allows calling default constructor of class with no constructors
• KT-37406 NI: "UnsupportedOperationException: no descriptor for type constructor of TypeVariable(T)" when compiling *.gradle.kts file

IDE

• KT-37483 Kotlin localisation
• KT-37629 False positive "Unsupported [literal prefixes and suffixes]" for infix function
• KT-37808 "Resolve pasted references" dialog freezes UI for 20 seconds when pasting kotlin code

IDE. Completion

• KT-37144 Completion goes into an infinite loop with Arrow 0.10.4 dependency

IDE. Debugger

• KT-37767 Debugger, NPE happens while stepping.

IDE. Editing

• KT-35135 UI freeze: not enough checkCancelled on resolve path

IDE. Inspections and Intentions

• KT-37217 Replace UseExperimental with OptIn intention removes target prefixes for annotations

IDE. Native

• KT-38079 IDEA navigates to wrong line of source code from Native stack trace

IDE. Navigation

• KT-37487 Destructuring declarations are called "destruction declarations" in UI

Tools. Gradle. Native

• KT-37696 MPP Gradle plugin: False positive parallel execution detection if build started with --continue

1.3.71

Compiler

• KT-36095 201: False positive OVERLOAD_RESOLUTION_AMBIGUITY with Java Enum.valueOf and Enum.values() reference
• KT-37040 'No explicit visibility in API mode' should not be reported on enum members
• KT-37204 AssertionError: "No delegated property metadata owner for" with lazy inside inline function

Docs & Examples

• KT-37029 Kotlin full stack app demo: update all involving versions to work with 1.3.70 release

IDE

• KT-34759 "PSI and index do not match" and high CPU usage when the library has enum with elements in quotes and internal lazy val in another part of code
• KT-37200 StackOverflowError in LightMethodBuilder.equals when analysing Kotlin files
• KT-37229 java.lang.NoSuchMethodError: 'com.intellij.psi.impl.light.LightJavaModule, com.intellij.psi.impl.light.LightJavaModule.findModule after updating kotlin plugin to 1.3.70
• KT-37273 No error in editor when typing unresolved reference in super constructor lambda
• KT-37414 Not all imports are added on paste if code is formatted after paste
• KT-37553 Run inspections after general highlight pass

IDE. Code Style, Formatting

• KT-37545 Continuation indent for method's parameter changes in call chain

IDE. Hints

• KT-37537 IDE is missing or swallowing keystrokes when hint popups are displayed

IDE. Inspections and Intentions

• KT-36478 IDE suggests to use 'OptIn' annotation when it is not available in the used version of kotlin-stdlib
• KT-37294 False positive "Unused unary operator" on negative long annotation value

IDE. Navigation

• KT-36657 KotlinFindUsagesHandler#processElementUsages always return false if options.isSearchForTextOccurrences is false

IDE. Refactorings

• KT-37451 Change of signature error: Type of parameter cannot be resolved
• KT-37597 Support Suggest rename and change signature refactorings in Kotlin for IDEA 2020.1

IDE. Run Configurations

• KT-36781 Override ConfigurationFactory::getId method in Kotlin plugin to avoid problems with localizations

JavaScript

• KT-37386 Incorrect JS generated by the compiler: function is erased by the function parameter

Tools. Gradle. JS

• KT-36196 Investigate performance problems while resolving in projects with npm dependencies

Tools. Gradle. Multiplatform

• KT-37264 In intermediate common source sets, internals are not visible from their dependsOn source sets during Gradle build

Tools. Gradle. Native

• KT-37565 MPP plugin: Forbid parallel in-process execution of the Kotlin/Native compiler

Tools. kapt

• KT-37241 Kapt: Classpath entry points to a non-existent location: ...build/intermediates/javac/debug/classes...

1.3.70

Compiler

New Features

• KT-34648 Support custom messages for @RequiresOptIn-marked annotations

Performance Improvements

• KT-14513 Suboptimal compilation of lazy delegated properties with inline getValue

Fixes

• KT-19234 Improve "Supertypes of the following classes cannot be resolved" diagnostic
• KT-21178 Prohibit access of protected members inside public inline members
• KT-24461 Expect interface with suspend function with default arguments causes runtime error
• KT-25514 Support usage of function reference with vararg where function of array is expected in new inference
• KT-26435 Bad frame merge after inline
• KT-27825 Gradually prohibit non-abstract classes containing abstract members invisible from that classes (internal/package-private)
• KT-27999 Generic type is fixed too early for lambda arguments
• KT-28940 Concurrency issue for lazy values with the post-computation phase
• KT-29242 Conditional with generic type Nothing inside inline function throws java.lang.VerifyError: Bad return type
• KT-30244 Unable to infer common return type for two postponed arguments
• KT-30245 Wrong type is inferred for lambda if it has expected type with an extension receiver
• KT-30277 Relax the "no reflection found in class path" warning for KType and related API
• KT-30744 Invoking Interface Static Method from Extension method generates incorrect jvm bytecode
• KT-30953 Missing unresolved if callable reference is used in the place in which common super type is computing
• KT-31227 Prohibit using array based on non-reified type parameters as reified type arguments on JVM
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31411 Support mode of compiler where it analyses source-set as platform one, but produces only metadata for that specific source-set
• KT-31653 Incorrect transformation of the try-catch cover when inlining
• KT-31923 Outer finally block inserted before return instruction is not excluded from catch interval of inner try (without finally) block
• KT-31975 No diagnostic on error type
• KT-32106 New type inference: IDE shows error but the code compiles succesfully
• KT-32138 New type inference: Invoking type-aliased extension function red in IDE, but compiles
• KT-32168 Problem in IDE with new type inference and delegate provider
• KT-32243 New type inference: Type mistmatch in collection type usage
• KT-32345 New type inference: Error when using helper method to create delegate provider
• KT-32372 Type inference errors in IDE
• KT-32415 Type mismatch on argument of super constructor of inner class call
• KT-32423 New type inference: IllegalStateException: Error type encountered: org.jetbrains.kotlin.types.ErrorUtils$UninferredParameterTypeConstructor@211a538e (ErrorType)
• KT-32435 New inference preserves platform types while old inference can substitute them with the nullable result type
• KT-32456 New type inference: "IllegalStateException: Error type encountered" when adding emptyList to mutableList
• KT-32499 Kotlin/JS 1.3.40 - new type inference with toTypedArray() failure
• KT-32742 Gradle/JS "Unresolved Reference" when accessing setting field of Dynamic object w/ React
• KT-32818 Type inference failed with elvis operator
• KT-32862 New type inference: Compilation error "IllegalArgumentException: ClassicTypeSystemContextForCS couldn't handle" with overloaded generic extension function reference passed as parameter
• KT-33033 New type inference: Nothing incorrectly inferred as return type when null passed to generic function with expression if statement body
• KT-33197 Expression with branch resolving to List<…> ultimately resolves to MutableList<…>
• KT-33263 "IllegalStateException: Type variable TypeVariable(T) should not be fixed!" with generic extension function and in variance
• KT-33542 Compilation failed with "AssertionError: Suspend functions may be called either as suspension points or from another suspend function"
• KT-33544 "UnsupportedOperationException: no descriptor for type constructor of TypeVariable(R)?" with BuilderInference and elvis operator
• KT-33592 New type inference: Missed error in IDE — Unsupported [Collection literals outside of annotations]
• KT-33932 Compiler fails when it encounters inaccessible classes in javac integration mode
• KT-34029 StackOverflowError for access to nested object inheriting from containing generic class at org.jetbrains.kotlin.descriptors.impl.LazySubstitutingClassDescriptor.getTypeConstructor
• KT-34060 UNUSED_PARAMETER is not reported on unused parameters of non-operator getValue/setValue/prodiveDelegate functions
• KT-34282 Missing diagnostic of unresolved for callable references with overload resolution ambiguity
• KT-34391 New type inference: False negative EXPERIMENTAL_API_USAGE_ERROR with callable reference
• KT-34395 KtWhenConditionInRange.isNegated() doesn't work
• KT-34500 CompilationException when loop range is DoubleArray and loop parameter is casted to super-type (e.g. Any, Number, etc.)
• KT-34647 Gradually rename experimentality annotations
• KT-34649 Deprecate -Xexperimental flag
• KT-34779 JVM: "get()" is not invoked in optimized "for" loop over CharSequence.withIndex() with unused variable ("_") for the element in destructuring declaration
• KT-34786 Flaky type inference for lambda expressions
• KT-34820 New type inference: Red code when expanding type-aliased extension function in LHS position of elvis
• KT-34888 Kotlin REPL ignores compilation errors in class declaration
• KT-35035 Incorrect state-machine generated for suspend lambda inside inline lambda
• KT-35101 "AssertionError: Mapping ranges should be presented in inline lambda" with a callable reference argument to inline lambda
• KT-35168 New type inference: "UninitializedPropertyAccessException: lateinit property subResolvedAtoms has not been initialized"
• KT-35172 New type inference: False positive type mismatch if nullable type after elvis and safe call inside lambda is returning (expected type is specified explicitly)
• KT-35224 New type inference: Java call candidate with varargs as Array isn't present if SAM type was used in this call
• KT-35262 Suspend function with Unit return type returns non-unit value if it is derived from function with non-unit return type
• KT-35426 IncompatibleClassChangeError: Method 'int java.lang.Object.hashCode()' must be Methodref constant when invoking on super with explicit generic type
• KT-35843 Emit type annotations in JVM bytecode with target 1.8+ on basic constructions
• KT-36297 New type inference: ClassNotFoundException: compiler emits reference to nonexisting class for code with nested inline lambdas
• KT-36719 Enable new inference in IDE since 1.3.70

Docs & Examples

• KT-31118 Provide missing documentation for StringBuilder members

IDE

New Features

• KT-27496 Color Scheme: allow changing style for suspend function calls
• KT-30806 Add IntelliJ Color Scheme rules for property declarations
• KT-34303 IDE should suggest to import an extension iterator function when using for loop with a range
• KT-34567 Feature: Auto add val keyword on typing data/inline class ctor parameters
• KT-34667 Add auto-import quickfix for overloaded generic function

Performance Improvements

• KT-30726 Editor is laggy if the code below a current line has unresolved reference
• KT-30863 IDE freeze on editing with "Add unambiguous imports on the fly" turned on
• KT-32868 Provide incremental analysis of file when it is applicable
• KT-33250 KtLightClassForSourceDeclaration.isFinal() can be very slow (with implications for class inheritor search)
• KT-33905 Optimize imports under reasonable progress
• KT-33939 Copy action leads to freezes
• KT-34956 UI Freeze: PlainTextPasteImportResolver
• KT-35121 Add support for KtSecondaryConstructors into incremental analysis
• KT-35189 Support incremental analysis of comment and kdoc
• KT-35590 UI freeze in kotlin.idea.core.script.ScriptConfigurationMemoryCache when editing file

Fixes

• KT-10478 Move-statement doesn't work for methods with single-expression body and lambda as returning type
• KT-13344 Reduce visual distraction of val keyword
• KT-14758 Move statement up shouldn't move top level declarations above package and import directives
• KT-23305 We should be able to see platform-specific errors in common module
• KT-24399 No scrollbar in Kotlin compiler settings
• KT-27806 UAST: @Deprecated(level=DeprecationLevel.HIDDEN) makes method disappear
• KT-28708 Java IDE fails to understand @JvmDefault on properties from binaries
• KT-30489 Kotlin functions are represented in UAST as UAnnotationMethods
• KT-31037 Lambda expression default parameter 'it' sometimes is not highlighted in a call chain
• KT-31365 IDE does not resolve references to stdlib symbols in certain packages (kotlin.jvm) when using OSGi bundle
• KT-32031 UAST: Method body missing for suspend functions
• KT-32540 Ultra light class support for compiler plugins
• KT-33820 Stop using com.intellij.codeInsight.AnnotationUtil#isJetbrainsAnnotation
• KT-33846 Stop using com.intellij.openapi.vfs.newvfs.BulkFileListener.Adapter
• KT-33888 Bad indentation when copy-paste to trimIndent()
• KT-34081 Kotlin constants used in Java annotation attributes trigger "Attribute value must be constant" error
• KT-34316 UAST: reified methods no longer visible in UAST
• KT-34337 Descriptors Leak in UltraLightClasses
• KT-34379 "Implement members" with unspecified type argument: "AssertionError: 2 declarations in override fun"
• KT-34785 Enter handler: do not add 'trimIndent()' in const
• KT-34914 Analysis sometimes isn't rerun until an out of code block change
• KT-35222 SQL language is not injected to String array attribute of Java annotation
• KT-35266 Kotlin-specific setting "Optimize imports on the fly" is useless
• KT-35454 Weird implementation of KtUltraLightFieldImpl.isEquivalentTo
• KT-35673 ClassCastException on destructuring declaration with annotation
• KT-36008 IDEA 201: NSME: "com.intellij.openapi.progress.util.ProgressIndicatorUtils.awaitWithCheckCanceled(Future)" at org.jetbrains.kotlin.idea.util.ProgressIndicatorUtils.awaitWithCheckCanceled()

IDE. Code Style, Formatting

New Features

• KT-35088 Insert empty line between a declaration and declaration with comment
• KT-35106 Insert empty line between a declaration and declaration with annotation

Fixes

• KT-4194 Code formatter should not move end of line comment after if condition to the next line
• KT-12490 Formatter inserts empty line between single-line declarations in presence of comment
• KT-22273 Labeled statements are formatted incorrectly
• KT-22362 Formatter breaks up infix function used in elvis operator
• KT-23811 Formatter: Constructor parameters are joined with previous line if prefixed with an annotation
• KT-23929 Formatter: chained method calls: "Chop down if long" setting is ignored
• KT-23957 Formatter tears comments away from file annotations
• KT-30393 Remove unnecessary whitespaces between property accessor and its parameter list in formatter
• KT-31881 Redundant indent for single-line comments inside lamdba
• KT-32277 Space before by delegate keyword on property is not formatted
• KT-32324 Formatter doesn't insert space after safe cast operator as?
• KT-33553 Formater does not wrap function chained expression body despite "chained function calls" settings
• KT-34049 Formatter breaks string inside template expression with elvis operator
• KT-35093 Formatter inserts empty line between single-line declarations in presence of annotation
• KT-35199 Wrong formatting for lambdas in chain calls

IDE. Completion

Fixes

• KT-15286 Support import auto-completion for extension functions declared in objects
• KT-23026 Code completion: Incorrect const in class declaration line
• KT-23834 Code completion and auto import do not suggest extension that differs from member only in type parameter
• KT-25732 null keyword should have priority in completion sort
• KT-29840 const is suggested inside the class body, despite it's illegal
• KT-29926 Suggest lambda parameter names in IDE to improve DSL adoption
• KT-31762 Completion: Parameter name is suggested instead of enum entry in entry constructor
• KT-32615 PIEAE for smart completion of anonymous function with importing name inside of function
• KT-33979 No completion for functions from nested objects
• KT-34150 No completion for object methods that override something
• KT-34386 Typo in Kotlin arg postfix completion
• KT-34414 Completion works differently for suspend and regular lambda functions
• KT-34644 Code completion list sorting: do not put method before "return" keyword
• KT-35042 Selecting completion variant works differently for suspend and regular lambda parameter
• KT-36306 Code completion inlines content of FQN class if completion called in string

IDE. Debugger

Fixes

• KT-12242 Breakpoint in a class is not hit if the class was first accessed in Evaluate Expression
• KT-16277 Can't set breakpoint for object construction
• KT-20342 Step Over jumps to wrong position (KotlinUFile)
• KT-30909 "Kotlin variables" button looks inconsistent with panel style
• KT-32704 ISE "Descriptor can be left only if it is last" on calling function with expression body inside Evaluate Expression window
• KT-32736 Evaluate Expression on statement makes error or shows nothing
• KT-32741 "Anonymous functions with names are prohibited" on evaluating functions in Expression mode
• KT-33303 "Smart step into" doesn't work for library declarations
• KT-33304 Can't put a breakpoint to the first line in file
• KT-33728 Smart Step Into doesn't work for @InlineOnly functions
• KT-35316 IndexNotReadyException on function breakpoint

IDE. Folding

• KT-6316 Folding of multiline functions which don't have curly braces (expression-body functions)

IDE. Gradle Integration

• KT-35442 KotlinMPPGradleModelBuilder shows warnings on import because it can't find a not existing directory

IDE. Gradle. Script

• KT-31976 Adding a space in build.gradle.kts leads to 'Gradle projects need to be imported' notification
• KT-34441 *.gradle.kts: load all scripts configuration at project import
• KT-34442 *.gradle.kts: avoid just-in-case script configuration request to Gradle
• KT-34530 Equal duplicate script definitions are listed three times in Preferences
• KT-34740 Implement completion for implicit receivers in scripts with new scripting API
• KT-34795 Gradle Kotlin DSL new project template: don't use setUrl syntax in settings.gradle.kts pluginManagement block
• KT-35096 Duplicated “Kotlin Script” definition for Gradle/Kotlin projects
• KT-35149 build.graldle.kts settings importing: configuration for buildSrc/prepare-deps/build.gradle.kts not loaded
• KT-35205 *.gradle.kts: avoid just-in-case script configuration request to Gradle while loading from FS
• KT-35563 Track script modifications between IDE restarts

IDE. Hints. Parameter Info

• KT-34992 UI Freeze: Show parameter info leads to freezes

IDE. Inspections and Intentions

New Features

• KT-8478 Make 'Add parameter to function' quick fix work to parameters other than last
• KT-12073 Report IDE inspection warning on pointless unary operators on numbers
• KT-18536 Provide proper quick fix for accidental override error
• KT-34218 Merge 'else if' intention
• KT-36018 'Missing visibility' and 'missing explicit return type' compiler and IDE diagnostics for explicit API mode

Fixes

• KT-17659 Cannot access internal Kotlin declaration from Java test code within the same module
• KT-25271 "Remove redundant '.let' call" may introduce expression side effects several times
• KT-29737 "Make internal/private/protected" intention works for either expect or actual side
• KT-31967 Typo in inspection name: "'+=' create new list under the hood"
• KT-32582 Ambiguous message for [AMBIGUOUS_ACTUALS] error (master)
• KT-33109 "Add constructor parameters" quick fix should add default parameters from super class
• KT-33123 False positive "Redundant qualifier name" with inner class as constructor parameter for outer
• KT-33297 Improve parameter name in Add parameter to constructor quick fix
• KT-33526 False positive "Redundant qualifier name" with enum constant initialized with companion object field
• KT-33580 False positive "Redundant visibility modifier" overriding property with protected set visibility
• KT-33771 False positive "Redundant Companion reference" with Java synthetic property and same-named object property
• KT-33796 INVISIBLE_SETTER: quick fix "Make '' public" does not remove redundant setter
• KT-33902 False positive for "Remove explicit type specification" with type alias as return type
• KT-33933 "Create expect" quick fix generates the declaration in a default source set even if an alternative is chosen
• KT-34078 ReplaceWith does not work if replacement is fun in companion object
• KT-34203 'Add constructor parameter' fix does not add generics
• KT-34297 "Add 'replaceWith' argument" inserts positional instead of named argument
• KT-34325 "Control flow with empty body" inspection should not report ifs with comments
• KT-34411 Create expect/actual quick fix: focus is lost in the editor (193 IDEA)
• KT-34432 Replace with safe call intention inserts redundant elvis operator
• KT-34603 "Remove redundant '.let' call" false negative for reference expression
• KT-34694 "Terminate preceding call with semicolon" breaks lambda formatting
• KT-34784 "Indent raw string" intention: do not suggest in const
• KT-34894 Action "Add not-null asserted (!!) call" doesn't fix error for properties with omitted this
• KT-35022 Quickfix "change to var" doesn't remove const modifier
• KT-35208 NPE from PerModulePackageCacheService
• KT-35242 Text-range based inspection range shifts wrongly due to incremental analysis of whitespace and comments
• KT-35288 False positive "Remove braces from 'when' entry" in 'when' expression which returns lambda
• KT-35837 Editing Introduce import alias does not affect KDoc
• KT-36020 Intention 'Add public modifier' is not available for highlighted declaration in explicit api mode
• KT-36021 KDoc shouldn't be highlighted on 'visibility must be specified' warning in explicit api mode
• KT-36307 False positive "Remove redundant '.let' call" for nested lambda change scope reference

IDE. Multiplatform

• KT-33321 In IDE, actuals of intermediate test source set are incorrectly matched against parent main source-set (not test one)

IDE. Navigation

• KT-30736 References for import alias from kotlin library not found using ReferencesSearch.search
• KT-35310 PIEAE: "During querying provider Icon preview" at ClsJavaCodeReferenceElementImpl.multiResolve() on navigation to Kotlin declaration

IDE. Refactorings

Performance Improvements

• KT-24122 Long pauses with "removing redundant imports" dialog on rename refactoring for IDEA Kotlin Plugin

Fixes

• KT-18191 Refactor / Copy multiple files/classes: package statements are not updated
• KT-18539 Default implement fun/property text shouldn't contain scary comment
• KT-28607 Extract/Introduce variable fails if caret is just after expression
• KT-32514 Moving file in with 'search for references' inlines contents in referred source code
• KT-32601 Introduce variable in unformatted lambda causes PIEAE
• KT-32999 Renaming parameter does not rename usage in named argument in a different file
• KT-33372 Rename resource cause its content to be replaced
• KT-34415 Refactor > Change signature of an overridden actual function from a platform class: "org.jetbrains.kotlin.descriptors.InvalidModuleException: Accessing invalid module descriptor"
• KT-34419 Refactor > Change signature > add a function parameter: "org.jetbrains.kotlin.descriptors.InvalidModuleException: Accessing invalid module descriptor"
• KT-34459 Change method signature with unresolved lambda type leads to error
• KT-34971 Refactor / Copy for declarations from different sources throws IAE: "unexpected element" at CopyFilesOrDirectoriesHandler.getCommonParentDirectory()
• KT-35689 Change Signature: "InvalidModuleException: Accessing invalid module descriptor" on attempt to change receiver type of a member abstract function
• KT-35903 Change Signature refactoring crashes by InvalidModuleException on simplest examples

IDE. Run Configurations

• KT-34632 Kotlin/JS: Can not run single test method
• KT-35038 Running a test in a multi-module MPP project via IntelliJ Idea gutter action produces incorrect Gradle Run configuration

IDE. Script

• KT-34688 Many "scanning dependencies for script definitions progresses at the same time
• KT-35886 UI Freeze: ScriptClassRootsCache.hasNotCachedRoots 25 seconds

IDE. Tests Support

• KT-33787 IDE tests: Not able to run single test using JUnit

IDE. Wizards

New Features

• KT-36043 Gradle, JS: Add continuous-mode run configuration in New Project Wizard templates

Fixes

• KT-35584 New Project wizard: module names restrictions are too strong with no reason
• KT-35690 New Project wizard: artifact and group fields are mixed up
• KT-35694 New Project wizard creates settings.gradle.kts even for Groovy DSL
• KT-35695 New Project wizard uses kotlin () call for dependencies in non-MPP Groovy-DSL JVM project
• KT-35710 New Project wizard creates non-Java source/resource roots for Kotlin/JVM JPS
• KT-35711 New Project wizard: Maven: "Kotlin Test framework" template adds wrong dependency
• KT-35712 New Project wizard: source root templates: switching focus from root reverts custom settings to default
• KT-35713 New Project wizard: custom settings for project name, artifact and group ID are reverted to default on Previous/Next
• KT-35715 New Project wizard: Maven: custom repository required for template (ktor) is not added to pom.xml
• KT-35718 New Project wizard: Gradle: ktor: not existing repository is added
• KT-35719 New Project wizard: Multiplatform library: entryPoint specifies not existing class name
• KT-35720 New Project wizard: Multiplatform library: Groovy DSL: improve the script for nativeTarget calculation

JS. Tools

• KT-35198 Kotlin/JS: with references to NPM/.kjsm library DCE produces invalid resulting JavaScript
• KT-36349 KJS: JS DCE use file's timestamps to compare files. It conflicts with gradle configuration 'preserveFileTimestamps = false'.

JavaScript

• KT-30517 KJS generates wrong call for secondary constructor w/ default argument when class inherited by object expression
• KT-33149 Lambda is not a subtype of Function<*>
• KT-33327 JS IR backend works incorrectly when function and property have the same name
• KT-33334 JS IR backend can't access private var from internal inline function

Libraries

New Features

• KT-7657 scan() functions for Sequences and Iterable
• KT-15363 Builder functions for basic containers
• KT-21327 Add Deque & ArrayDeque to Kotlin standard library
• KT-33069 StringBuilder common functions
• KT-33761 reduceOrNull: reduce that doesn't throw on empty input
• KT-35347 Create method Collection.randomOrNull()
• KT-36118 Provide API for subtyping relationship between CoroutineContextKey and elements associated with this key

Fixes

• KT-17544 JS: document array destructuring behavior
• KT-33141 UnderMigration annotation is defined in Kotlin, but supposed to be used from Java
• KT-33447 runCatching docs suggests it catches exceptions but it catches throwables
• KT-35175 Clarify documentation for XorWowRandom
• KT-35299 Float.rangeTo(Float): ClosedFloatingPointRange doesn't exist in the common stdlib.

Reflection

• KT-14720 Move KClass.cast / KClass.isInstance into kotlin-stdlib
• KT-33646 Make KClass.simpleName available on JVM without kotlin-reflect.jar
• KT-34586 Make KClass.qualifiedName available on JVM without kotlin-reflect.jar

Tools. CLI

• KT-29933 Support relative paths in -Xfriend-paths
• KT-34119 Add JVM target bytecode version 13
• KT-34240 CLI kotlinc help -include-runtime has redundant space

Tools. Gradle

• KT-25206 Delegate build/run to gradle results regularly in cannot delete proto.tab.value.s
• KT-35181 Make kapt Gradle tasks compatible with instant execution

Tools. Gradle. JS

New Features

• KT-30659 Run NodeJS debugger when running debug gradle task from IDEA
• KT-32129 Karma: support debugging
• KT-32179 DSL: allow npm in root dependencies section of single platform projects
• KT-32283 Webpack: Allow to configure Webpack mode
• KT-32323 Webpack: support optimized webpack bundle
• KT-32785 Webpack: Asset bundling in distributions folder

Fixes

• KT-30917 Tests: Inner classes mapped incorrectly in short test fail message
• KT-31894 ithout Kotlin sources browserRun makes the build fail
• KT-34946 DCE require some/all transitive dependencies. Invalid compilation result otherwise
• KT-35318 IllegalStateException on clean build with left-pad package and generateKotlinExternals=true
• KT-35428 Gradle dependency with invalid package.json
• KT-35598 Actualize NPM dependencies in 1.3.70
• KT-35599 Actualize Node and Yarn versions in 1.3.70
• KT-36714 Webpack output doesn't consider Kotlin/JS exports (library mode)

Tools. Gradle. Multiplatform

• KT-31570 Deprecate Kotlin 1.2.x MPP Gradle plugins
• KT-35126 Support Gradle instant execution for Kotlin/JVM and Android tasks
• KT-36469 Dependencies with compileOnly scope are not visible in Gradle build of MPP with source set hierarchies support

Tools. Gradle. Native

• KT-29395 Allow setting custom destination directory for Kotlin/Native binaries
• KT-31542 Allow changing a name of a framework created by CocoaPods Gradle plugin
• KT-32750 Support subspecs in CocoaPods plugin
• KT-35352 MPP Gradle plugin: Support exporting K/N dependencies to shared and static libraries
• KT-35934 Gradle MPP plugin: Spaces are not escaped in K/N compiler parameters
• KT-35958 Kotlin/Native: Gradle: compiling test sources with no sources in main roots halts the Gradle daemon

Tools. J2K

New Features

• KT-21811 Convert string concatenation into multiline string

Performance Improvements

• KT-16774 UI Freeze: J2K, PlainTextPasteImportResolve: IDEA freezes for 10+ seconds when copy-pasting Java code from external source to Kotlin file

Fixes

• KT-18001 Multi-line comments parsed inside Kdoc comments
• KT-19574 Code with inferred default parameters and parameter vs property name clashes
• KT-32551 Non-canonical modifiers order inspection is not applied during convertion of inner super class
• KT-33637 Property with getter is converted into incompailable code if backing field was not generated
• KT-34673 First comment in function (if, for, while) block is moved to declaration line of block
• KT-35081 Invalid code with block comment (Javadoc)
• KT-35152 J2K breaks formatting by moving subsequent single line comments to first column
• KT-35395 UninitializedPropertyAccessException through org.jetbrains.kotlin.nj2k.conversions.ImplicitCastsConversion when anonymous inner class passes itself as argument to outer method
• KT-35431 "Invalid PSI class com.intellij.psi.PsiLambdaParameterType" with lambda argument in erroneous code
• KT-35476 Expression with compound assignment logical operator is changing operator precedence without parentheses
• KT-35478 Single line comment before constructor results in wrong code
• KT-35739 Line break is not inserted for private property getter
• KT-35831 Error on inserting plain text with \r char

Tools. Scripts

• KT-34274 Add support for @CompilerOptions annotation in kotlin-main-kts
• KT-34716 Implement default cache in main-kts
• KT-34893 Update apache ivy version in kotlin-main-kts
• KT-35413 Implement "evaluate expression" command line parameter and functionality in the JVM cli compiler
• KT-35415 Implement script and expression evaluation in the kotlin runner
• KT-35416 load main-kts script definition by default in the jvm compiler, if the jar is available

Tools. kapt

• KT-30164 Default field value not transmitted to Java source model for mutable properties
• KT-30368 Deprecated information not transmitted to Java source model
• KT-32832 Turn worker API on by default
• KT-33617 Java 9+: "IllegalStateException: Should not be called!"
• KT-34167 Annotation Processor incorrectly marked as isolating causes full rebuild silently.
• KT-34258 kapt.incremental.apt=true makes build failed after moving annotation processor files
• KT-34569 Kapt doesn't handle methods with both the @Override annotation and override keyword
• KT-36113 Enabling kapt.incremental.apt makes remote build cache miss via classpathStructure$kotlin_gradle_plugin property

1.3.61

Compiler

• KT-35004 "AssertionError: Unsigned type expected" in when range check in extension on unsigned type

IDE

• KT-34923 [Regression] KtUltraLightMethod.hasModifierProperty("native") returns false for external Kotlin functions

Libraries

• KT-21445 W3C DOM Touch events and interfaces are incomplete / missing

Tools. Compiler Plugins

• KT-34991 kotlinx.serialization: False warning "Explicit @Serializable annotation on enum class is required when @SerialName or @SerialInfo annotations are used on its members"

Tools. J2K

• KT-34987 New J2K converter: @NotNull annotations are not removed after converting java code to kotlin
• KT-35074 J2K: No auto conversion in 'for' loop with multiple init variables

1.3.60

Android

• KT-27170 Android lint tasks fails in Gradle with MPP dependency

Compiler

New Features

• KT-31230 Refine rules for allowed Array-based class literals on different platforms: allow Array::class everywhere, disallow Array<...>::class on non-JVM
• KT-33413 Allow 'break' and 'continue' in 'when' statement to point to innermost surrounding loop

Performance Improvements

• KT-14513 Suboptimal compilation of lazy delegated properties with inline getValue
• KT-28507 Extra InlineMarker.mark invocation in generated suspending function bytecode
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges

Fixes

• KT-7354 Confusing error message when trying to access package local java class
• KT-9310 Don't make interface and DefaultImpls methods synchronized
• KT-11430 Improve diagnostics for dangling lambdas
• KT-16526 Provide better error explanation when one tries to delegate var to read-only delegate
• KT-20258 Improve annotation rendering in diagnostic messages
• KT-22275 Unify exceptions from null checks
• KT-27503 Private functions uses from inside of suspendCoroutine go though accessor
• KT-28938 Coroutines tail-call optimization does not work for generic returns that had instantiated to Unit
• KT-29385 "AnalyzerException: Expected an object reference, but found I" for EXACTLY_ONCE non-inline contract with captured class constructor parameter
• KT-29510 "RuntimeException: Trying to access skipped parameter" with EXACTLY_ONCE contract and nested call of crossinline lambda
• KT-29614 java.lang.VerifyError: Bad type on operand stack - in inlining, crossinline in constructor with EXACTLY_ONCE contract
• KT-30275 Get rid of session in FirElement
• KT-30744 Invoking Interface Static Method from Extension method generates incorrect jvm bytecode
• KT-30785 Equality comparison of inline classes results in boxing
• KT-32217 FIR: support delegated properties resolve
• KT-32433 NI: UninferredParameterTypeConstructor with class property
• KT-32587 NI: Type mismatch "String" vs "String" in IDE on generic .invoke on generic delegated property
• KT-32689 Shuffled line numbers in suspend functions with elvis operator
• KT-32851 Constraint for callable reference argument doesn't take into account use-site variance
• KT-32864 The line number of assertFailsWith in suspending function is lost
• KT-33125 NI: "Rewrite at slice INDEXED_LVALUE_SET" with Mutable Map set index operator inside "@kotlin.BuilderInference" block
• KT-33414 'java.lang.AssertionError: int type expected, but null was found in basic frames' in kotlin-io while building library train
• KT-33421 Please make NOTHING_TO_INLINE warning shorter
• KT-33504 EA-209823 - ISE: ProjectResolutionFacade$computeModuleResolverProvider$resolverForProject$$.invoke: Can't find builtIns by key CacheKeyBySdk
• KT-33572 Scripting import with implicit receiver doesn't work
• KT-33821 Compiler should not rely on the default locale when generating boxing for suspend functions
• KT-18541 Prohibit "tailrec" modifier on open functions
• KT-19844 Do not render type annotations on symbols rendered in diagnostic messages
• KT-24913 KotlinFrontEndException with local class in init of generic class
• KT-28940 Concurrency issue for lazy values with the post-computation phase
• KT-31540 Change initialization order of default values for tail recursive optimized functions

Docs & Examples

• KT-26212 Update docs to explicitly mention that union is opposite of intersect
• KT-34086 Website, stdlib api docs: unresolved link jvm/stdlib/kotlin.text/-charsets/Charset

IDE

Fixes

• KT-8581 'Move Statement' doesn't work for statement finished by semicolon
• KT-9204 Shorten references and some other IDE features have problem when package name clash with class name
• KT-17993 Annotations are colored the same as language keywords
• KT-21037 LazyLightClassMemberMatchingError$WrongMatch “Matched :BAR MemberIndex(index=0) to :BAR MemberIndex(index=1) in KtLightClassImpl” after duplicating values inside enum class
• KT-23305 We should be able to see platform-specific errors in common module
• KT-23461 Move statement up/down attaches a comment block to the function being moved
• KT-26960 IDE doesn't report actual without expect placed into a custom platform-agnostic source set
• KT-27243 LazyLightClassMemberMatchingError when overriding hidden member
• KT-28404 Gradle configuration page is missing from a New Project Wizard creation flow for multiplatform templates
• KT-30824 No highlighting of declaration/usage of function with functional-type (lambda) parameter on its usage
• KT-31117 AssertionError at CompletionBindingContextProvider._getBindingContext when typing any character within string with injected Kotlin
• KT-31139 "Override members" on enum inserts semicolon before enum body
• KT-31810 Paste inside indented .trimIndent() raw string doesn't respect indentation
• KT-32401 Exceptions while running IDEA in headless mode for building searchable options
• KT-32543 UltraLight support for Kotlin collections.
• KT-32544 Support UltraLight classes for local/anonymous/enum classes
• KT-32799 2019.2 RC (192.5728.74) Kotlin plugin exception during build searchable options (Directory index may not be queried for default project)
• KT-33008 IDEA does not report in MPP: Upper bound of a type parameter cannot be an array
• KT-33316 Kotlin Facet: make sure the order of allPlatforms value is fixed
• KT-33561 LazyLightClassMemberMatchingError when overloading synthetic member
• KT-33584 Make kotlin light classes return no-arg constructor when no-arg (or jpa) compiler plugin is enabled
• KT-33775 please remove usages of org.intellij.plugins.intelliLang.inject.InjectorUtils#putInjectedFileUserData(com.intellij.lang.injection.MultiHostRegistrar, com.intellij.openapi.util.Key, T) deprecated eons ago
• KT-33813 Poor formatting of 'Selected target platforms' and 'Depends on' in facet settings
• KT-33937 delay() completion from kotlinx.coroutines causes happening of root package in code
• KT-33973 Kotlin objects could abuse idea plugin functionality
• KT-34000 Import quickfix does not work for extension methods from objects
• KT-34070 "No target platforms selected" message for commonTest facet at mobile shared library project
• KT-34191 Since-build .. until-build compatibility ranges are the same for 192 and 193 IDE plugins
• KT-21153 IDE: string template + annotation usage: ISE: "Couldn't get delegate" at LightClassDataHolderKt.findDelegate()
• KT-33352 "KotlinExceptionWithAttachments: Couldn't get delegate for class" on nested class/object
• KT-34042 "Error loading Kotlin facets. Kotlin facets are not allowed in Kotlin/Native Module" in 192 IDEA
• KT-34237 MPP with Android target: common* source sets are not shown as source roots in IDE
• KT-33626 Deadlock with Kotlin LockBasedStorageManager in IDEA commit dialog
• KT-34402 Unresolved reference to Kotlin.test library in CommonTest in Multiplatform project without JVM target
• KT-34639 Multiplatform project with the only (Android) target is incorrectly imported into IDE

IDE. Completion

• KT-10340 Import completion unable to shorten fq-names when there is a conflict between package name and local identifier
• KT-17689 Code completion for enum typealias doesn't show members
• KT-28998 Slow completion for build.gradle.kts (Kotlin Gradle DSL script)
• KT-30996 DSL extension methods which are not applicable are offered for completion
• KT-31902 Fully qualified name is used for delay instead of import and just method name
• KT-33903 Duplicating completion for imported extensions from companion objects

IDE. Debugger

• KT-10984 Disallow placing line breakpoints without executable code (changed)
• KT-22116 Support function breakpoints
• KT-24408 @InlineOnly: Misleading status for breakpoints in inline functions
• KT-27645 Debugger breakpoints do not work in suspend function executed in SpringBoot controller (MVC and WebFlux)
• KT-32687 Disallow breakpoints for @InlineOnly function bodies
• KT-32813 Exception on invoking "Smart Step Into"
• KT-32830 NPE on changing class property in Evaluate Expression window
• KT-33064 “Read access is allowed from event dispatch thread or inside read-action only” from KotlinLineBreakpointType.createLineSourcePosition on adding new line before the current one while stopping on breakpoint
• KT-11395 Breakpoint inside lambda argument of InlineOnly function doesn't work

IDE. Folding

• KT-6314 Folding of "when" construction

IDE. Gradle

• KT-33038 Package prefix is not imported in non-MPP project
• KT-33987 Serialization exception during importing Kotlin project in IDEA 192
• KT-32960 KotlinMPPGradleModelBuilder takes a long time to process when syncing non-MPP project with IDE
• KT-34424 With Kotlin plugin in Gradle project without Native the IDE fails to start Gradle task: "Kotlin/Native properties file is absent at null/konan/konan.properties"
• KT-34256 Fail to use multiplatform modules with dependsOn with android plugin
• KT-34663 Low performance of MPP 1.2 during import with module-per-source-set enabled

IDE. Gradle. Script

• KT-31766 Gradle Kotlin DSL new project template: use type-safe model accessors
• KT-34463 New Gradle-based project template misses pluginManagement{} block in EAP branch
• KT-31767 Gradle Kotlin DSL new project template: use settings.gradle.kts

IDE. Inspections and Intentions

New Features

• KT-26431 Quickfix to remove redundant label
• KT-28049 Suggest import quickfix for operator extension functions
• KT-29622 "Move to separate file" intention should also work for sealed class
• KT-33178 Use a new compiler flag -Xinline-classes during enabling the feature via IDEA intention
• KT-33586 "Constructors are not allowed for objects" diagnostic needs quickfix to change object to class

Fixes

• KT-12291 Override/Implement Members: better member positioning inside the class
• KT-14899 Quickfix "Create member function" inserts too many semicolons when applied to Enum
• KT-15700 "Convert lambda to reference" does not work with backtick-escaped references
• KT-18772 "Introduce subject to when": don't choose an object or a constant as the subject
• KT-21172 Join declaration and assignment should place the result at the assignment, not at declaration
• KT-25697 Replace with dot call quickfix breaks formatting
• KT-26635 An empty line is added after actual modifier on "Create actual annotation class..." quick fix applied to annotation if it is annotated with comment
• KT-27270 "Add jar to classpath" quick fix modifies build.gradle of MPP project in a way that fails to be imported
• KT-28471 "Add initializer" quickfix initializes non-null variable with null
• KT-28538 create expected ... quick fix illegally creates expect member with a usage of a platform-specific type
• KT-28549 Create actual/expect quick fix for class/object doesn't add import for an inherited member
• KT-28620 Create expect/actual ... quick fix could save @Test annotation on generation
• KT-28740 AE “2 declarations in var bar: [ERROR : No type, no body]” after applying “Create actual class” quick fix for class with property which has not specified type
• KT-28947 Backing field has created after applying “Create expected class in common module...” intention
• KT-30136 False negative "Redundant explicit 'this'" with local variable
• KT-30794 Quickfix for unchecked cast produces invalid code
• KT-31133 Liveness analysis on enum does not take into account calls to 'values'
• KT-31433 Incorrect "Create expected class..." for class with supertype
• KT-31475 "Create expect..." should delete 'override' modifier
• KT-31587 Redundant private modifier before primary constructor after create actual class
• KT-31921 "Create expected ..."/"Create actual..." quick fix: val and vararg modifiers are misordered in the generated expect/actual declaration
• KT-31999 "Variable declaration could be moved into when" inspection suggests to inline expression containing return (throw) statement
• KT-32012 Change parameter type quick fix: Don't use qualified name
• KT-32468 False positive SimplifiableCall "filter call could be simplified to filterIsInstance" with expression body function and explicit return type
• KT-32479 False positive "Redundant overriding method" with derived property and base function starting with get, set or is (Accidental override)
• KT-32571 "Create expect" quick fix incorrectly treats multiplatform stdlib typealiased types as platform-specific ones
• KT-32580 "Remove braces" QF for single-expression function with inferred lambda return type: "ClassCastException: class kotlin.reflect.jvm.internal.KClassImpl cannot be cast to class kotlin.jvm.internal.ClassBasedDeclarationContainer"
• KT-32582 Ambiguous message for [AMBIGUOUS_ACTUALS] error (master)
• KT-32586 "Make member open" quick fix doesn't update all the related actualisations of an expected member
• KT-32616 "To ordinary string literal" doesn't remove indents, newlines and trimIndent
• KT-32642 "Create expect" quick fix doesn't warn about a platform-specific annotation applied to the generated member
• KT-32650 "Replace 'if' with 'when'" removes braces from 'if' statement
• KT-32694 "Create expect"/"create actual" quick fix doesn't transfer use-site annotations
• KT-32737 "Create expect" quick fix adds actual modifier to an interface function with default implementation without a warning
• KT-32768 "Create expect" quick fix doesn't warn about a local supertype of an actual class while generating an expected declaration
• KT-32829 "Add .jar to the classpath" quick fix creates "compile"/"testCompile" dependencies in build.gradle
• KT-32972 No "remove braces" inspection for ${this}
• KT-32981 "Create enum constant" quick fix adds redundant empty line
• KT-33060 "Cleanup code" does not remove 'final' keyword for overridden function with non-canonical modifiers order
• KT-33115 "Replace overloaded operator with function call" intention should not be shown on incomplete expressions
• KT-33150 Don't suggest create expect function from function with private modifier
• KT-33153 False positive "Redundant overriding method" when overriding package private method
• KT-33204 False positive "flatMap call could be simplified to flatten()" with Array
• KT-33299 "Create type parameter from usage" should work with backticks
• KT-33300 "Create type parameter from usage" suggests for top level property
• KT-33302 KNPE after "Create type parameter from usage" with typealias
• KT-33357 'java.lang.Throwable: Assertion failed: Refactorings should be invoked inside transaction 'exception occurs when extracting sealed class from file with the same name
• KT-33362 Inspection "Extract class from current file" is not available for 'sealed' keyword
• KT-33437 “Argument rangeInElement (0,1) endOffset must not exceed descriptor text range (0, 0) length (0).” on creating Kotlin Script files inside package
• KT-33612 "Replace with safe call" quick fix moves code to another line
• KT-33660 "Convert to anonymous object" with nested SAM interface inserts object keyword in the wrong place
• KT-33718 "Create enum constant" quick fix adds after semicolon
• KT-33754 Improve error hint message for "Create expect/actual..."
• KT-33880 "Convert to range check" produces code that is subject to ReplaceRangeToWithUntil for range with exclusive upper bound
• KT-33930 Don't suggest "create expect" quick fix on lateinit and const top-level properties
• KT-33981 “KotlinCodeInsightWorkspaceSettings is registered as application service, but requested as project one” on opening QF menu for some fixes in IJ193
• KT-32965 False positive "Redundant qualifier name" with nested enum member call
• KT-33597 False positive "Redundant qualifier name" with class property initialized with same-named object property
• KT-33991 False positive "Redundant qualifier name" with enum member function call
• KT-34113 False positive "Redundant qualifier name" with Enum.values() from a different Enum

IDE. KDoc

• KT-20777 KDoc: Type parameters are not shown in sample code

IDE. Multiplatform

• KT-26333 IDE incorrectly requires actual implementations to be present in all the project source sets
• KT-28537 Platform-specific type taken from a dependency module isn't reported in common code
• KT-32562 Provide a registry key to enable/disable hierarchical multiplatform mechanism in IDE

IDE. Navigation

• KT-28075 Duplicate "implements" gutter icons on some interfaces
• KT-30052 Duplicated "is subclassed" editor gutter icons
• KT-33182 com.intellij.idea.IdeStarter#main has four (!) icons, should be two

IDE. REPL

• KT-33329 IllegalArgumentException in REPL

IDE. Refactorings

• KT-24929 'Search for references' checkbox state isn't saved on move of kotlin file
• KT-30342 Move refactoring: suggest file name starting with an uppercase letter
• KT-32426 Invalid code format after "Pull Members Up" on function with comment and another indent
• KT-32496 "Problems Detected" dialog message about conflicting declarations on moving file to another package is absolutely unreadable
• KT-33059 Exception [Assertion failed: Write access is allowed inside write-action only] in case of Move class to nonexistent folder
• KT-33972 Change signature should affect all hierarchy

IDE. Run Configurations

• KT-34366 Implement gutters for running tests (multi-platform projects)

IDE. Scratch

• KT-23986 No access to stdout output in Kotlin scratch
• KT-23989 Scratch: allow copy of a scratch output
• KT-28910 Add hint for Make before Run checkbox
• KT-29407 strange output for long strings
• KT-31295 Kotlin worksheet in projects, not as scratch files
• KT-32366 Sidebar as alternative output layout
• KT-33585 Synchronized highlighting of the main editor and side panel

IDE. Script

• KT-30206 Settings / ... / Kotlin Scripting with no project opened causes ISE: "project.baseDir must not be null" at ScriptTemplatesFromDependenciesProvider.loadScriptDefinitions()
• KT-32513 Intellij hangs in ApplicationUtilsKt.runWriteAction through ScriptDependenciesLoader$submitMakeRootsChange$doNotifyRootsChanged$1.run

IDE. Wizards

• KT-27587 Bump Android build tools version at Multiplatform (Android/iOS) template of the New Project Wizard
• KT-33927 MPP, Kotlin New project wizard: broken project generation
• KT-34108 Gradle Kotlin DSL: generated project with tasks element fails on configuration stage with Gradle 4.10
• KT-34154 New Project wizard: build.gradle.kts: type-safe code sets JVM 1.8 for main, but JVM 1.6 for test
• KT-34229 New Project wizard: IDEA 193+: Mobile Android/iOS: creating another project of this type tries to write into previous one

JavaScript

• KT-12935 Generated source maps for JS mention nonexistent dummy.kt
• KT-26701 JS, rollup.js: Application can't depend on a library if both sourcemaps reference "dummy.kt"

Libraries

• KT-26309 Avoid division in string-to-number conversions
• KT-27545 File.copyTo: unclear error message when it fails to delete the destination
• KT-28804 Wrong parameter name in kotlin.text.contentEquals
• KT-32024 Modify Iterable<T>.take(n) implementation not to call .next() more than necessary
• KT-32532 MutableList.removeAll is lacking documentation
• KT-32728 CollectionsKt.windowed throws IllegalArgumentException (Illegal Capacity: -1) when size param is Integer.MAX_VALUE due to overflow operation
• KT-33864 Read from pseudo-file system is empty

Reflection

• KT-13936 KotlinReflectionInternalError on invoking callBy on overridden member with inherited default argument value
• KT-17860 Improve KParameter.toString for receiver parameters

Tools

• KT-17045 Drop MaxPermSize support from compiler daemon
• KT-32259 org.jetbrains.annotations module exported from embeddable compiler, causes problems in Java modular builds

Tools. Android Extensions

• KT-32096 IDE plugin doesn't recognize that Parcelize is no longer experimental

Tools. CLI

• KT-24991 CLI: Empty classpath in kotlin script except for kotlin-runner.jar
• KT-26624 Set Thread.contextClassLoader when running programs with 'kotlin' launcher script or scripts with 'kotlinc -script'
• KT-24966 Classloader problems when running basic kafka example with kotlin and kotlinc

Tools. Compiler Plugins

• KT-29471 output from jvm-api-gen plugin on classpath crashes downstream kotlinc-jvm: inline method with inner class
• KT-33630 cannot use @kotlinx.serialization.Transient and lateinit together on 1.3.50

Tools. Daemon

• KT-32992 Enable assertions in Kotlin Compile Daemon
• KT-33027 Compilation with daemon fails, because IncrementalModuleInfo#serialVersionUID does not match

Tools. Gradle

New Features

• KT-20760 Kotlin Gradle Plugin doesn't allow for configuring friend paths through API
• KT-34009 Associate compilations in the target–compilation project model

Performance Improvements

• KT-31666 Kotlin plugin configures all tasks in a project when kotlin.incremental is enabled

Fixes

• KT-17630 User test Gradle source set code cannot reach out internal members from the production code
• KT-22213 Android Extensions experimental mode doesn't work with Gradle Kotlin DSL
• KT-31077 android.kotlinOptions block is lacking its type
• KT-31641 Kapt configurations miss attributes to resolve MPP dependencies: Cannot choose between the following variants ...
• KT-31713 ConcurrentModificationException: Realize Pending during execution phase
• KT-32678 Bugfixes in HMPP source set visibility
• KT-32679 Testing & test tasks API in the target–compilation model
• KT-32804 Kapt-generated Java sources in jvm+withJava MPP module are not compiled and bundled
• KT-32853 ConcurrentModificationException when compiling with Gradle.
• KT-32872 Gradle test runner for Native does not show failed build if process quit without starting printing results.
• KT-33105 kapt+withJava in multiplatform module depending on other multiplatform fails on 1.3.50-eap-54
• KT-33469 Drop support for Gradle versions older than 4.3 in the Kotlin Gradle plugin
• KT-33470 Drop support for Gradle versions older than 4.9 in the Kotlin Gradle plugin
• KT-33980 Read the granular source sets metadata flag value once and cache it for the current Gradle build
• KT-34312 UnsupportedOperationException on requiresVisibilityOf in the Kotlin Gradle plugin

Tools. Gradle. JS

New Features

• KT-31478 Gradle, JS tests, Karma: Support sourcemaps in Gradle stacktraces
• KT-32073 Gradle, JS, karma: parse errors and warnings from karma output
• KT-32075 Gradle, JS, karma: download chrome headless using puppeteer

Fixes

• KT-31663 Gradle/JS: with not installed browser specified for browser test the response is "Successful, 0 tests found"
• KT-32216 Gradle, JS, tests: filter doesn't work
• KT-32224 In Gradle Kotlin/JS projects, the browserWebpack task does not rerun when the main compilation's outputs change
• KT-32281 Gradle, JS, karma: Headless chrome output is not captured
• KT-33288 JS: Incorrect bundle with webpack output.library and source maps
• KT-33313 When a Kotlin/JS test task runs using a custom compilation, it doesn't track the compilation outputs in its up-to-date checks
• KT-33547 Template JS Client and JVM Server works wrong on 1.3.50 Kotlin
• KT-33549 Gradle Kotlin/JS external declarations: search for typings key inside package.json
• KT-33579 Js tests with mocha cannot be run
• KT-33710 Task "generateExternals" for automatic Dukat execution does not work
• KT-33716 Gradle, Yarn: yarn is not downloading via YarnSetupTask
• KT-34101 CCE class org.jetbrains.kotlin.gradle.targets.js.testing.KotlinJsTest_Decorated cannot be cast to class org.gradle.api.provider.Provider on importing Gradle project with JS
• KT-34123 "Cannot find node module "kotlin-test-js-runner/kotlin-test-karma-runner.js"" in JS Client and JVM Server new project wizard template
• KT-32319 Gradle, js, webpack: source-map-loader failed to load source contents from relative urls
• KT-33417 NodeTest failed with error "Failed to create MD5 hash" after NodeRun is executed
• KT-33747 Exception doesn't fail the test in kotlin js node runner
• KT-33828 jsPackageJson task fails after changing artifact origin repository
• KT-34460 NPM packages clash if declared in dependencies and devDependencies both
• KT-34555 [Kotlin/JS] Unsafe webpack config merge

Tools. Gradle. Native

• KT-33076 MPP Gradle plugin: Produce final native binaries from compilation output instead of sources
• KT-33645 Kotlin/Native: Compilation failure if a library passed by the -Xinclude option contains a constructor annotated with @OverrideInit
• KT-34259 MPP Gradle plugin: Support fat frameworks for watchOS and tvOS
• KT-34329 Support watchOS and tvOS in CocoaPods Gradle plugin

Tools. J2K

New Features

• KT-7940 J2K: convert Integer.MAX_VALUE to Int.MAX_VALUE
• KT-22412 J2K: Intention to replace if(...) throw IAE with require
• KT-22680 Request: when converting Java->Kotlin, try to avoid creating functions for constant fields (static final)

Performance Improvements

• KT-33725 Java->Kotlin converter on paste performs expensive reparse in unrelated contexts
• KT-33854 J2K conversion of Interface freezes UI for more than 10 seconds without progress dialog
• KT-33875 [NewJ2K] InspectionLikeProcessingGroup pipeline rework: query isApplicable in parallel for all element first, apply relevant after in EDT

Fixes

• KT-19603 A mutable container property updated from another class converts to red code
• KT-19607 Static member qualified by child class converted to red code
• KT-20035 Automatic conversion from Java 1.8 to Kotlin 1.1.4 using Idea 2017.2.2: null!!
• KT-21504 J2K: Convert Long.parseLong(s) to s.toLong()
• KT-24293 Bug: conversion of Java "List" into Kotlin doesn't produce "MutableList"
• KT-32253 Converting Java class with field initialized by constructor parameter used to initialize a different field or named as a different field produces red code
• KT-32696 New J2K: java List is wrongly converted when pasting it to Kotlin file
• KT-32903 J2K: Static import is converted to unresolved reference
• KT-33235 Remove "Replace guard clause with kotlin's function call" inspection and tranform it to J2K post-processing
• KT-33434 UninitializedPropertyAccessException occurs after J2K convertion of package with custom functional interface and it's usage
• KT-33445 Two definitions of org.jetbrains.kotlin.idea.j2k.J2kPostProcessing in Kotlin 1.3.50-rc
• KT-33500 Unresolved reference after J2K convertion of isNaN/isFinite
• KT-33556 J2K converter fails on statically imported global overloaded functions
• KT-33679 Result of assignment with operation differs in kotlin after J2K conversion
• KT-33687 Extra empty lines are added after comment after J2K conversion
• KT-33743 Reference to static field outside its class is unresolved after J2K conversion
• KT-33756 J2K: main method with varargs is converted to non-runnable main kotlin method
• KT-33863 java.lang.IllegalStateException: argument must not be null exception occurs on J2K conversion of Generic class usage without type parameter
• KT-19355 "Variable expected" error after J2K for increment/decrement of an object field
• KT-19569 Java wrappers for primitives are converted to nullable types with nullability errors in Kotlin
• KT-30643 J2K: wrong position of TYPE_USE annotation
• KT-32518 Nullability information is lost after J2K convertion of constructor with null parameter
• KT-33941 J2K: Overload resolution ambiguity with assertThat and StackOverflowError in IDEA
• KT-33942 New J2K: StackOverflowError from org.jetbrains.kotlin.nj2k.inference.common.BoundTypeCalculatorImpl.boundTypeUnenhanced
• KT-34164 J2K: on converting static method references in other .java sources are not corrected
• KT-34165 J2K: imports are lost in conversion, references resolve to different same-named classes
• KT-34266 Multiple errors after converting Java class implementing an interface from another file

Tools. JPS

• KT-33808 JPS compilation is not incremental in IDEA 2019.3

Tools. Maven

• KT-34006 Maven plugin do not consider .kts files as Kotlin sources
• KT-34011 Kotlin scripting plugin is not loaded by default from kotlin maven plugin

Tools. REPL

• KT-27956 REPL/Script: extract classes and names right from ClassLoader

Tools. Scripts

• KT-31661 ClassNotFoundException in runtime for 'kotlinc -script' while compilation is fine
• KT-31704 [kotlin-scripting] passing name to String.toScriptSource make script compilation failed
• KT-32234 "Unable to derive module descriptor" when using Kotlin compiler (embeddable) in Java 9+ modular builds
• KT-33529 NCDF running kotlin script from command line
• KT-33554 Classpath not passed properly when evaluating standard script with kotlinc
• KT-33892 REPL/Script: Implement mechanism for resolve top-level functions and properties from classloader
• KT-34294 SamWithReceiver cannot be used with new scripting API

Tools. kapt

• KT-31291 Incremental Kapt: IllegalArgumentException from org.jetbrains.org.objectweb.asm.ClassVisitor.<init>
• KT-33028 Kapt error "Unable to find package java.lang in classpath or bootclasspath" on JDK 11 with -source 8
• KT-33050 kapt does not honor source/target compatibility of enclosing project
• KT-33052 Kapt generates invalid java stubs for enum members with class bodies on JDK 11
• KT-33056 Incremental kapt is disabled due to javaslang.match.PatternsProcessor processor on classpath when Worker API is enabled
• KT-33493 1.3.50, org.jetbrains.org.objectweb.asm.ClassVisitor.
• KT-33515 Incremental kapt fails when I remove an annotated file
• KT-33889 Incremental KAPT: NoSuchMethodError: 'java.util.regex.Pattern com.sun.tools.javac.processing.JavacProcessingEnvironment.validImportStringToPattern(java.lang.String)'
• KT-33503 Kapt, Spring Boot: "Could not resolve all files for configuration ':_classStructurekaptKotlin'"
• KT-33800 KAPT aptMode=compile fails to compile certain legitimate code

1.3.50

Compiler

• KT-12787 Debugger: Generate line number at end of function (to set a breakpoint on the last line of the block)
• KT-23675 "Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" when classes are defined inside an anonymous extension function and access a field of the extension function's this instance
• KT-24596 Refactor / Inline const property does not insert its value into usage in annotation
• KT-25497 kotlinx.serialization - throws Backend Internal error exception during code generation of sealed classes
• KT-28927 "IllegalStateException: Arrays of class literals are not supported yet" in AnnotationDeserializer.resolveArrayElementType
• KT-31070 IndexOutOfBoundsException in Analyzer with @JvmOverloads constructor with 34+ parameters
• KT-31265 FIR: experimental compiler
• KT-31535 False positives from compiler warning IMPLICIT_NOTHING_AS_TYPE_PARAMETER
• KT-31969 NI: false positive USELESS_ELVIS with multiple elvis calls
• KT-32044 For loop over full UByte range terminates at UInt bound.
• KT-25432 No smartcast on qualifier expression of captured type
• KT-30796 psi2ir generates IrErrorType for elvis with generic type having nullable upper-bound when expected type is not nullable
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31734 Empty parameter list required on Annotations of function types
• KT-32434 New type inference fails for Caffeine Cache
• KT-32452 Kotlin 1.3.40 - problem in IDE with new type inference and suspending method reference
• KT-32407 NI: "use property access syntax" intention causes freezes in editor
• KT-33127 Script result value is not calculated properly for the last expression
• KT-33157 Inline class with generic method is considered bad class by javac

Docs & Examples

• KT-16602 Provide examples of sorting API usage
• KT-32353 Document order of array elements initialization

IDE

New Features

• KT-28098 Insert space after automatically closed right brace of nested lambda to follow code style

Fixes

• KT-16476 Extend selection (Select Word) doesn't select just KDoc if cursor is just before the KDoc
• KT-21374 Imports optimized tooltip is displayed, even if no changes were made
• KT-21422 IDE can't import class from root package
• KT-27344 MPP: jvmWithJava: no IDE module dependency is created between Kotlin test and Java main on import; Gradle build is successful
• KT-29667 Kotlin update settings has wrong looking text boxes for versions
• KT-30133 Update copyright creates duplicates for build.gradle.kts files
• KT-30782 'Show Method Separators' does not separate expression body Kotlin functions
• KT-31022 Quick definition does not show Kotlin code in Java files
• KT-31499 "Extend selection" selects escaped identifier name together with backticks
• KT-31595 "Complete current statement" for method call closes brace at wrong place
• KT-31637 NPE in IDE when organizing imports
• KT-31786 KNPE at copy attempt due to kdoc reference
• KT-32276 Fix flaky test for ultra light classes
• KT-32364 Remove deprecated usages of OUT_OF_CODE_BLOCK_MODIFICATION_COUNT and write a replacement for Kotlin language
• KT-32370 Lambdas should have implicit return in Kotlin Uast
• KT-12096 Spring: rename of Kotlin bean defined in @Bean annotation fails
• KT-28193 Exception: Mirror element should never be calculated for light classes generated from a single file
• KT-28822 Dependencies in Kotlin MPP project could be wrongly resolved if project was not build before import
• KT-29267 Enable ultra-light classes by default
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-32082 Kotlin facet: 1.3.40 plugin does not properly read target platform settings of 1.3.50 plugin
• KT-32969 Data class extending abstract class with final toString, equals or hashCode causes exception
• KT-33245 IllegalArgumentException exception occurs on Tools->Configure Koltin in Project action in Android Studio

IDE. Completion

• KT-9792 Don't propose the same name for arguments of lambda on completion of function call with lambda template
• KT-29572 Smart completing anonymous object uses incorrect code style
• KT-25264 Freeze in Kotlin file on completion
• KT-32519 Keyword completion: support fixing layout and typo tolerance

IDE. Debugger

New Features

• KT-30740 Display more information about variables when breakpoint is set inside lambda expression

Fixes

• KT-8579 Debugger: Evaluate expression fails at typed arrays
• KT-10183 Debugger: receiver properties are not shown inline in extension function
• KT-11663 Assignment is not possible in Evaluate expression
• KT-11706 Attempts to evaluate java method calls on 'Array' instance in debugger fail with NoSuchMethodError
• KT-11888 Evaluate Expression for expression with synchronized
• KT-11938 Empty condition is marked as error
• KT-13188 Cannot evaluate expression with local extension function
• KT-14421 Debugger: breakpoint set on trivial if/while is not hit
• KT-15259 Debug: closing brace of object definition is considered executable; ISE: "Don't call this method for local declarations: OBJECT_DECLARATION" at LazyDeclarationResolver.getMemberScopeDeclaredIn()
• KT-19084 Breakpoints on Debugger altering Result
• KT-19556 Kotlin exception while debugging IJ plugin code
• KT-19980 Debug: evaluation fails for setter of member extention property
• KT-20560 Evaluate expression doesn't work for super method call
• KT-23526 In *.kts scripts, debugger ignores breakpoints in top-level statements and members
• KT-24914 AS: Uninitialized yet lazy properties called on first debug point reach
• KT-26742 Debugger can't evaluate expected top-level function from common code
• KT-30120 False positive "Unused equals expression" in evaluate expression window
• KT-30730 Missing tooltip for "Kotlin variables view" button
• KT-30919 Debugger's "Kotlin View" doesn't show variables inside lambdas
• KT-30976 Debugger: No access to receiver evaluating named parameters during call to extension function
• KT-31418 java.lang.ClassCastException : java.lang.annotation.Annotation[] cannot be cast to byte[]
• KT-31510 isDumb should be used only under read action: KotlinEvaluator
• KT-31702 Debugger can't stop on breakpoint on Unit expression from coroutine context
• KT-31709 Evaluate: "IllegalArgumentException: Parameter specified as non-null is null: method org.jetbrains.kotlin.codegen.FrameMapBase.getIndex, parameter descriptor" with nested lambda member access
• KT-24829 Access to coroutineContext in 'Evaluate expression'

IDE. Gradle

• KT-19693 Import package prefix from Gradle
• KT-30667 Dependencies of a module on a multiplatform one with a JVM target and withJava() configured, are incorrectly resolved in IDE
• KT-32300 Add possibility to distinguish kotlin source root from java source root
• KT-31014 Gradle, JS: Webpack watch mode
• KT-31843 Memory leak caused by KOTLIN_TARGET_DATA_NODE on project reimport

IDE. Gradle. Script

• KT-31779 "Highlighting in scripts is not available"
• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle
• KT-31440 Add link to Gradle Kotlin DSL logs when script dependencies resolution process fails
• KT-32483 CNFE org.gradle.kotlin.dsl.KotlinBuildScript on creating new Gradle Kotlin project from wizard
• KT-21501 build.gradle.kts displays failures if not using java sdk for module

IDE. Inspections and Intentions

New Features

• KT-8958 ReplaceWith intention message could be more helpful in case of generic substitution
• KT-12515 Quickfix "by Delegates.notNull()" as replacement for "lateinit" for primitive type
• KT-14344 Suggest to replace manual range with explicit indices call or iteration over collection
• KT-17916 Import popup does not indicate deprecated classes
• KT-23501 Add intention for converting ordinary properties to 'lazy' and vise versa
• KT-25006 Add inspection "'equals()' between objects of inconvertible primitive / enum / string types"
• KT-27353 Quickfix to add a constructor parameter from parent class to child class
• KT-30124 Add inspection to replace java.util.Arrays.equals with contentEquals
• KT-30640 Add inspection for check/require/checkNotNull/requireNotNull
• KT-30775 Inspection for the case when one lateinit var overrides another lateinit var
• KT-31476 Improve "Create expect..." quickfix
• KT-31533 Make "Add operator modifier" an inspection instead of intention
• KT-31795 Inspection: simplify property setter with custom visibility
• KT-31924 Make "add import" intention more flexible based on caret position
• KT-30970 No warning for empty if operator and alsomethod

Fixes

• KT-12567 "Introduce 'when' subject" intention does not work for "this" in extension function
• KT-14369 "Replace elvis expression with 'if" intention produces boilerplate code for 'return' in RHS
• KT-16067 "Replace 'if' expression with elvis expression" suggests replacing an idiomatic code with non-idiomatic
• KT-19643 Tune or disable the FoldInitializerAndIfToElvis inspection
• KT-24439 No method imports suggested
• KT-25786 False positive "Not-null extension receiver of inline function can be made nullable" with operator fun invoke
• KT-25905 False positive for 'LeakingThis' on a method call in enum class body
• KT-27074 False positive "Foldable if-then" with Result type
• KT-27550 "Redundant explicit this" false positive with subclass and extension lambda
• KT-27563 Generate toString in common code shouldn't use java.util.Arrays
• KT-27822 Don't suggest might be const on actual member declaration
• KT-28595 "Assignment should be lifted out of 'if'" false negative for different but compatible derived types
• KT-29192 "Convert property to function" with explicit generic type loses getter body
• KT-29716 With both explicit and implicit package prefixes "Package name does not match containing directory" inspection suggests not usable quick fix
• KT-29731 Don't suggest Add val/var to parameter at expect class constructor
• KT-30191 "Lift out of if" intention isn't suggested for assignment of null
• KT-30197 ReplaceWith for deprecated function adds class literal/callable reference argument above unless it is used in substitution
• KT-30627 "Use property access syntax" produces red code if setter argument is a lambda with implicit SAM conversion
• KT-30804 Property declaration goes to annotation comment when removing only modifier using RemoveModifierFix
• KT-30975 ''when' has only 'else' branch and should be simplified' inspection removes subject variable definition used in else branch
• KT-31033 "Create expect ..." quick fix incorrectly works for a secondary constructor in a multiplatform project
• KT-31272 Expand "create expected ..." quick fix highlighting also to a primary constructor
• KT-31278 Inappropriate "Remove redundant .let call" inspection
• KT-31341 Incorrect quickfix "Replace with Kotlin analog" for conversion to an extension, where the first argument is an expression with an operation
• KT-31359 "Invalid property key" inspection false positive for a bundle with several properties files
• KT-31362 'Move variable declaration into when' quickfix comments left brace with EOL comment
• KT-31443 Remove braces intention places caret in a wrong place
• KT-31446 Incorrect quick fix “Create expected class" for inline class with parameter with actual
• KT-31518 Incorrect "Create expect function" for primary constructor
• KT-31673 Only when keyword should be highlighted in WhenWithOnlyElseInspection
• KT-31716 Decrease severity of PackageDirectoryMismatchInspection to INFO
• KT-31717 Decrease severity of RemoveCurlyBracesFromTemplateInspection
• KT-31816 "Package directive doesn't match file location" for root package is invisible in editor
• KT-31954 MoveVariableDeclarationIntoWhen should move the caret to the subject expression
• KT-32001 Wrong quickfixes for TOO_MANY_ARGUMENTS
• KT-32010 Convert ReplaceSingleLineLetIntention to inspections
• KT-32046 False negative "Redundant qualifier name" with class literal
• KT-32112 False positive "Redundant qualifier name"
• KT-32318 "Remove argument name" intention does not remove square braces for annotation vararg argument
• KT-32320 False negative "Redundant qualifier name" with local object
• KT-32347 Duplicative "Remove redundant 'public' modifier" suggestion for getter
• KT-32365 "Convert to sealed class" intention should not be suggested when no "class" keyword
• KT-32419 Spurious 'while' has empty body warning when body has explanatory comment
• KT-32506 False negative "Remove redundant qualifier name" with java.util.ArrayList<Int>()
• KT-32454 "Replace Java static method with Kotlin analog": invalid quick fix on 'abs()' function
• KT-26242 "Create test" intention does nothing in common module
• KT-27208 IDEA reports about the need to declare abstract or implement abstract method, but this method is @JvmStatic in an interface companion
• KT-27555 Create actual ... quick fix does nothing if the corresponding source set directory isn't created yet
• KT-28121 IDE: Warn on java files under "src/main/kotlin" or "src/test/kotlin" source roots
• KT-28295 Use languageSettings for a quick fix to enable experimental features in multiplatform projects
• KT-28529 Don't suggest commonMain source set as a target of create expected ... quick fix for a member of *Test source set
• KT-28746 “Create actual class” quick fix creates invalid file when is called from files located in package directory but don't have package name
• KT-30622 Add names to call arguments starting from given argument
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-32705 "Create expect" quick fix adds actual modifier to a const/lateinit declaration without a warning
• KT-32967 Warning about incorrectly placed Java source file isn't automatically dismissed on move of the file to the proper source root

IDE. JS

• KT-31895 New Project wizard: Kotlin Gradle + Kotlin/JS for Node.js: incorrect DSL is inserted

IDE. KDoc

• KT-30985 Missing line break in quick doc for enum constant

IDE. Multiplatform

• KT-29757 IDE fails to import transitive dependency of a JVM module to a multiplatform one

IDE. Navigation

• KT-10215 Kotlin classes are listed after Java classes in the navigation bar

IDE. Refactorings

• KT-29720 Refactor / Move does not update package statement with implicit prefix
• KT-30762 Inline method produces invalid code for suspend functions with receiver
• KT-30748 100+ Seconds UI Freeze on performing a Move Refactoring on a file with a lot of usages (KotlinOptimizeImports in thread dump)

IDE. Scratch

• KT-23604 Scratch: end of line is wrongly indented with the end of scratch line output
• KT-27963 Make REPL mode in Scratch files incremental
• KT-29534 Line output jumps to the next line together with cursor
• KT-32791 "Access is allowed from event dispatch thread only" while working with a scratch file

IDE. Script

• KT-25187 Kotlin script in src: warning: classpath entry points to a non-existent location on JDK 9+
• KT-31152 Errors in IDE when different Java Sdk are set as Project SDK and as Gradle JVM
• KT-31521 CNFE „org.jetbrains.kotlin.idea.caches.project.ScriptBinariesScopeCache“ on creating new Gradle based project
• KT-31826 Gradle clean task causes IDEA to lose kotlin scripting configuration
• KT-31837 TargetPlatform for scripts should depends on scriptDefinition.additionalArguments
• KT-30690 Highlighting for scripts in diff view doesn't work for left part
• KT-32061 Check classpath jars before applying script compilation result from file attributes
• KT-32554 Freezes in ScriptDependenciesUpdater

IDE. Tests Support

• KT-30814 MPP, 191 platform: with Gradle test runner run configuration for platform test is created without tasks

IDE. Wizards

• KT-32105 MPP project wizard: add option for Kotlin Gradle DSL

JS. Tools

• KT-31527 Keep generating empty jsTest task
• KT-31565 Gradle/JS: npmResolve is never UP-TO-DATE
• KT-32326 Gradle, test runner: support postponing test running error reporting at the end of the build
• KT-32393 Gradle, JS: Resolve projects lazily
• KT-31560 Gradle: provide descriptions for JS tasks
• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"
• KT-31694 Gradle, NPM, windows: creating symlink requires administrator privilege

Libraries

• KT-29372 measureTime that returns both the result of block and elapsed time
• KT-32083 Incorrect ReplaceWith annotation on kotlin.js.pow
• KT-12749 Provide Int.bitCount, Long.bitCount etc.
• KT-32359 Common Array.fill
• KT-33225 JS: Incorrect conversion of infinite Double to Long

Reflection

• KT-22923 Reflection getMemberProperties fails: kotlin.reflect.jvm.internal.KotlinReflectionInternalError
• KT-31318 "KotlinReflectionInternalError: Method is not supported" on accessing array class annotation parameter

Tools. Daemon

• KT-31550 NSME org.jetbrains.kotlin.com.intellij.openapi.vfs.impl.jar.CoreJarFileSystem.clearHandlersCache()V on compileKotlin task with plugin from master
• KT-32490 Compiler daemon tests fail on windows due to directory name being too long
• KT-32950 Daemon should inherit "-XX:MaxMetaspaceSize" of client VM
• KT-32992 Enable assertions in Kotlin Compile Daemon
• KT-33027 Compilation with daemon fails, because IncrementalModuleInfo#serialVersionUID does not match

Tools. CLI

• KT-33177 Introduce compiler flags -Xinline-classes and -Xpolymorphic-signature as a higher priority than -XXLanguage

Tools. Compiler Plugins

• KT-28824 Add jvm-abi-gen-embeddable for use with embeddable compiler
• KT-31279 JPS build with compiler plugin and "Keep compiler alive = No" fails with CCE: "Cannot cast NoArgComponentRegistrar to ComponentRegistrar" at ServiceLoaderLite.loadImplementations()
• KT-32346 kotlinx.serialization: Performance problems with completion/intellisense

Tools. Gradle

New Features

• KT-26655 Precise metadata publishing and consumption for new MPP
• KT-31018 Gradle, JS: yarn
• KT-31703 Gradle, JS: automatically download d.ts and generate kotlin/js external declarations using dukat
• KT-31890 Gradle, JS, webpack: provide property with full bundle file path
• KT-32015 Gradle, JS: resolve configuration only while executing tasks of specific projects
• KT-32136 Gradle, test runner: handle case when test runtime exits abnormally
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces
• KT-31697 Gradle, NPM: report about clashes in packages_imported

Performance Improvements

• KT-29538 AndroidSubPlugin#getCommonResDirectories is very slow

Fixes

• KT-29343 Kotlin MPP source set dependencies are not properly propagated to tests in Android projects
• KT-30691 Gradle, JS tests: Parent operation with id 947 not available when all tests passed
• KT-31917 Gradle, JS: transitive dependency between compilations in same project doesn't work
• KT-31985 Gradle, JS: webpack not working on windows
• KT-32072 Gradle, JS: browser() in DSL triggers project.evaluate()
• KT-32204 In an MPP, a dependency that is added to a non-root source set is incorrectly analyzed for source sets visibility
• KT-32225 In an MPP, if a dependency is added to a source set that does not take part in published compilations, it is not correctly analyzed in source set visibility inference
• KT-32564 Provide a flag to enable/disable hierarchical multiplatform mechanism in Gradle
• KT-31023 Update Gradle module metadata warning in MPP publishing
• KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
• KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"
• KT-32210 Kapt randomly fails with java.io.UTFDataFormatException
• KT-32706 Gradle target "jsBrowserWebpack" should use output of JS compile task as input
• KT-32697 [Tests] org.jetbrains.kotlin.gradle.SubpluginsIT
• KT-33246 Kotlin JS & Native tests + Gradle 5.6: No value has been specified for property 'binaryResultsDirectory'

Tools. Incremental Compile

• KT-31310 Incremental build of Kotlin/JS project fails with KNPE at IncrementalJsCache.nonDirtyPackageParts()

Tools. J2K

New Features

• KT-30776 New J2K
• KT-31836 Suggest user to configure Kotlin in the project when running new J2K file conversion
• KT-32512 ReplaceJavaStaticMethodWithKotlinAnalogInspection: add more cases for java.util.Arrays

Fixes

• KT-15791 J2K converts class literals including redundant generic <*>
• KT-31234 New J2K: Exception occurs on converting Java class to Kotlin
• KT-31250 J2K: caret position of original file is preserved, adding spaces to resulting file
• KT-31251 J2K: Java class with members is converted to Kotlin class with final constructor
• KT-31252 J2K: resulted file is not formatted
• KT-31254 J2K: resulted source uses full qualified references instead of imports
• KT-31255 J2K: redundant modifiers in resulted source
• KT-31726 New J2K converts annotation with array parameter to single value parameter
• KT-31809 "Attempt to modify PSI for non-committed Document!" exception and broken kotlin file after new J2K conversion
• KT-31821 J2K: IDEA Ultimate: local variable: CCE: "PsiLocalVariableImpl cannot be cast to class JvmAnnotatedElement" at JavaToJKTreeBuilder$DeclarationMapper.toJK()
• KT-32436 NewJ2K generic field is not initialized after convertion
• KT-19327 Java to Kotlin converter fails to convert code using Java 8 Stream API
• KT-21467 Convert To Kotlin fails when using chained stream.flatmap methods
• KT-24677 j2k creates nullable type for child function but keeps not null type for parent function
• KT-32572 New J2K: Map with complex type as parameter is wrongly converted
• KT-32602 J2K: no conversion of String.length() method call to property access of existing String property
• KT-32604 kotlin.NotImplementedError exception occurs on converting Java call of toString method of data class to Kotlin
• KT-32609 New J2K: Comparable class is wrongly converted to Kotlin if parameter of compareTo marked with @NotNull annotation
• KT-32693 New J2K is throwing „Read access is allowed from event dispatch thread or inside read-action only“ on converting Java code inside Evaluate Expression window
• KT-32702 New J2K: lambda with method reference is converted to lamdba with excessive parameter declaration
• KT-32835 New J2K: NumberFormatException occurs on converting binary literals
• KT-32837 J2K: NumberFormatException occurs on converting literals with underscore characters
• KT-22412 J2K: Intention to replace if(...) throw IAE with require
• KT-33371 Add an ability to switch between old and new J2K via settings window
• KT-32863 New J2K: IllegalArgumentException occurs on Kotlin configuration in java project in Android Studio

Tools. JPS

• KT-27181 Compiler arguments are listed twice on JPS build of Gradle-based project
• KT-13563 Kotlin jps-plugin should allow to instrument bytecode from Intellij IDEA.

Tools. REPL

• KT-15125 Support JSR 223 bindings directly via script variables
• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. Scripts

• KT-28137 Implement result/return value for the regular (non-REPL) scripts

Tools. kapt

• KT-30578 build/generated/source/kaptKotlin is added as source directory to main instead of jvmMain when jvm { withJava() } is configured in a multiplatform project
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31127 Kotlin-generating processor which uses Filer API breaks JavaCompile task
• KT-31378 v1.3.31: NoSuchElementException in kapt when kapt.incremental.apt=true
• KT-32535 Kapt aptMode=compile don't include files generated at kapt.kotlin.generated as sources to compile
• KT-31471 KAPT prints "IncrementalProcessor" instead of processor name in verbose mode

1.3.41

Compiler

• KT-31981 New type inference asks to use ?. on non-null local variable
• KT-32029 Exception when callable reference is resolved against unresolved type
• KT-32037 No coercion to Unit for last expression with lambda in code block
• KT-32038 Unsubstituted stub type cause type mismatch later for builder inference
• KT-32051 NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER on matching Nothing with generic type parameter
• KT-32081 New type inference fails involving Either and Nothing
• KT-32089 False positive IMPLICIT_NOTHING_AS_TYPE_PARAMETER with lambdas
• KT-32094 NI: member from star import has higher resolution priority than member imported by FQN
• KT-32116 Type inference for HashMap<,> fails but compiles
• KT-32123 Wrong unused import for extension method
• KT-32133 Regression in Kotlin 1.3.40 new inference engine
• KT-32134 java.lang.Throwable: Resolution error of this type shouldn't occur for resolve try as a call for incomplete try-construction
• KT-32143 1.3.40 new inference: backward incompatibility in method calls with multiple SAM arguments
• KT-32154 setOf(Map.Entry<*, *>::key) gives error on IDE
• KT-32157 Issue with new type inference in unbounded generics
• KT-32175 New Type Inference Algorithm, RxJava and IDE-Compiler Inconsistency
• KT-32184 NI: Argument for @NotNull parameter 'type' of org/jetbrains/kotlin/types/CommonSupertypes.depth must not be null
• KT-32187 Exception when using callable reference with an unresolved LHS
• KT-32218 Cannot call get on a Map<out Any,Any> with new type system
• KT-32230 New inference not working with RxJava combineLatest
• KT-32235 New type inference failure with in check

JavaScript

• KT-32215 Reified generic doesn't work with ByteArray on js

Tools. CLI

• KT-32272 kotlinc - no main manifest attribute, in hello.jar

Tools. REPL

• KT-32085 Kotlinc REPL: "java.lang.NoClassDefFoundError: org/jline/reader/LineReaderBuilder"

Tools. Scripts

• KT-32169 Kotlin 1.3.40 - Crash on running *.main.kts script: "NoSuchMethodError: kotlin.script.templates.standard.ScriptTemplateWithArgs."
• KT-32206 Custom script definitions not loaded in the cli compiler

1.3.40

Android

Fixes

• KT-12402 Android DataBinding work correctly but the IDE show it as error
• KT-31432 Remove obsolete code introduced in KT-12402

Compiler

New Features

• KT-29915 Implement typeOf on JVM
• KT-30467 Provide a way to to save compiled script(s) as a jar

Performance Improvements

• KT-17755 Optimize trimIndent and trimMargin on constant strings
• KT-30603 Compiler performance issue: VariableLivenessKt.useVar performance

Fixes

• KT-19227 Load built-ins from dependencies by default in the compiler, support erroneous "fallback" built-ins
• KT-23426 Actual typealias to Java enum does not match expected enum because of modality
• KT-23854 Inference for common type of two captured types
• KT-25105 False-positive warning "Remove final upper bound" on generic override
• KT-25302 New inference: "Type mismatch" between star projection and Any? type argument in specific case
• KT-25433 Wrong order of fixing type variables for callable references
• KT-26386 Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-26412 Wrong LVT generated if decomposed parameter of suspend lambda is not the first parameter.
• KT-27097 JvmMultifileClass + JvmName causes NoSuchMethodError on sealed class hierarchy for top-level members
• KT-28534 Local variable entries are missing in LVT for suspend lambda parameters
• KT-28535 Rename result to $result in coroutines' LVT
• KT-29184 Implement inference for coroutines according to the @BuilderInference contract in NI
• KT-29772 Contracts don't work if contract function is fully qualified (FQN)
• KT-29790 Incorrect version requirement in metadata of anonymous class for suspend lambda
• KT-29948 NI: incorrect DSLMarker behaviour with generic star projection
• KT-30021 +NewInference on Kotlin Native :: java.lang.StackOverflowError
• KT-30242 Statements are not coerced to Unit in last expressions of lambda
• KT-30243 Include FIR modules into compiler
• KT-30250 Rewrite at slice exception for callable reference argument inside delegated expression
• KT-30292 Reference to function is unresolved when LHS is a star-projected type
• KT-30293 Wrong intersection type for common supertype from String and integer type
• KT-30370 Call is completed too early when there is "Nothing" constraint
• KT-30405 Support expected type from cast in new inference
• KT-30406 Fix testIfOrWhenSpecialCall test for new inference
• KT-30590 Report diagnostic about not enough information for inference in NI
• KT-30620 Exception from the compiler when coroutine-inference is involved even with the explicitly specified types
• KT-30656 Exception is occurred when functions with implicit return-stub types are involved in builder-inference
• KT-30658 Exception from the compiler when getting callable reference to a suspend function
• KT-30661 Disable SAM conversions to Kotlin functions in new-inference by default
• KT-30676 Overload resolution ambiguity when there is a callable reference argument and candidates with different functional return types
• KT-30694 No debug metadata is generated for suspend lambdas which capture crossinline
• KT-30724 False positive error about missing equals when one of the operands is incorrectly inferred to Nothing
• KT-30734 No smartcast inside lambda literal in then/else "if" branch
• KT-30737 Try analysing callable reference preemptively
• KT-30780 Compiler crashes on 'private inline' function accessing private constant in 'inline class' (regression)
• KT-30808 NI: False negative SPREAD_OF_NULLABLE with USELESS_ELVIS_RIGHT_IS_NULL
• KT-30816 BasicJvmScriptEvaluator passes constructor parameters in incorrect order
• KT-30826 There isn't report about unsafe call in the new inference (by invalidating smartcast), NPE
• KT-30843 Duplicate JVM class name for expect/actual classes in JvmMultifileClass-annotated file
• KT-30853 Compiler crashes with NewInference and Kotlinx.Coroutines Flow
• KT-30927 Data flow info isn't used for 'this' which is returned from lambda using labeled return
• KT-31081 Implement ArgumentMatch abstraction in new inference
• KT-31113 Fix failing tests from SlicerTestGenerated
• KT-31199 Unresolved callable references with typealias
• KT-31339 Inliner does not remove redundant continuation classes, leading to CNFE in JMH bytecode processing
• KT-31346 Fix diagnostic DSL_SCOPE_VIOLATION for new inference
• KT-31356 False-positive error about violating dsl scope for new-inference
• KT-31360 NI: inconsistently prohibits member usage without explicit receiver specification with star projection and DSL marker
• KT-18563 Do not generate inline reified functions as private in bytecode
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-25290 New inference: KNPE at ResolutionPartsKt.getExpectedTypeWithSAMConversion() on out projection of Java class
• KT-26418 Back-end (JVM) Internal error when compiling decorated suspend inline functions
• KT-26925 Decorated suspend inline function continuation resumes in wrong spot
• KT-28999 Prohibit type parameters for anonymous objects
• KT-29307 New inference: false negative CONSTANT_EXPECTED_TYPE_MISMATCH with a Map
• KT-29475 IllegalArgumentException at getAbstractTypeFromDescriptor with deeply nested expression inside function named with a right parenthesis
• KT-29996 Properly report errors on attempt to inline bytecode from class files compiled to 1.8 to one compiling to 1.6
• KT-30289 Don't generate annotations on synthetic methods for methods with default values for parameters
• KT-30410 [NI] Front-end recursion problem while analyzing contract function with call expression of self in implies
• KT-30411 Fold recursive types to star-projected ones when inferring type variables
• KT-30706 Passing noinline lambda as (cross)inline parameter result in wrong state-machine
• KT-30707 Java interop of coroutines inside inline functions is broken
• KT-30983 ClassCastException: DeserializedTypeAliasDescriptor cannot be cast to PackageViewDescriptor on star-import of expect enum class actualized with typealias
• KT-31242 "Can't find enclosing method" proguard compilation exception with inline and crossinline
• KT-31347 "IndexOutOfBoundsException: Insufficient maximum stack size" with crossinline and suspend
• KT-31354 Suspend inline functions with crossinline parameters are inaccessible from java
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []
• KT-31461 NI: NONE_APPLICABLE instead of TYPE_MISMATCH when invoking convention plus operator
• KT-31503 Type mismatch with recursive types and SAM conversions
• KT-31507 Enable new type inference algorithm for IDE analysis
• KT-31514 New inference generates multiple errors on generic inline expression with elvis operator
• KT-31520 False positive "not enough information" for constraint with star projection and covariant type
• KT-31606 Rewrite at slice on using callable reference with array access operator
• KT-31620 False-positive "not enough information" for coroutine-inference when target method is assigned to a variable
• KT-31624 Type from declared upper bound in Java is considered more specific than Nothing producing type mismatch later
• KT-31860 Explicit type argument isn't considered as input type causing errors about "only input types"
• KT-31866 Problems with using star-projections on LHS of callable reference
• KT-31868 No type mismatch error when using NoInfer annotation
• KT-31941 Good code red in IDE with smart cast on parameter of a generic type after null check

IDE

New Features

• KT-11242 Action to copy project diagnostic information to clipboard
• KT-24292 Support external nullability annotations
• KT-30453 Add plugin option (registry?) to enable new inference only in IDE

Performance Improvements

• KT-13841 Classes and functions should be lazy-parseable
• KT-27106 Performance issue with optimize imports
• KT-30442 Several second lag on project open in KotlinNonJvmSourceRootConverterProvider
• KT-30644 ConfigureKotlinInProjectUtilsKt freezes UI

Fixes

• KT-7380 Imports insertion on paste does not work correctly when there were alias imports in the source file
• KT-10512 Do not delete imports with unresolved parts when optimizing
• KT-13048 "Strip trailing spaces on Save" should not strip trailing spaces inside multiline strings in Kotlin
• KT-17375 Optimize Imports does not remove unused import alias
• KT-27385 Uast: property references should resolve to getters/setters
• KT-28627 Invalid detection of Kotlin jvmTarget inside Idea/gradle build
• KT-29267 Enable ultra-light classes by default
• KT-29892 A lot of threads are waiting in KotlinConfigurationCheckerComponent
• KT-30356 Kotlin facet: all JVM 9+ target platforms are shown as "Target Platform = JVM 9" in Project Structure dialog
• KT-30514 Auto-import with "Add unambiguous imports on the fly" imports enum members from another package
• KT-30583 Kotlin light elements should be isEquivalentTo to it's origins
• KT-30688 Memory leak in the PerModulePackageCacheService.onTooComplexChange method
• KT-30949 Optimize Imports removes used import alias
• KT-30957 Kotlin UAST: USimpleNameReferenceExpression in "imports" for class' member resolves incorrectly to class, not to the member
• KT-31090 java.lang.NoSuchMethodError: org.jetbrains.kotlin.idea.UtilsKt.addModuleDependencyIfNeeded on import of a multiplatform project with Android target (191 IDEA + master)
• KT-31092 Don't check all selected files in CheckComponentsUsageSearchAction.update()
• KT-31319 False positive "Unused import" for provideDelegate extension
• KT-31332 Kotlin AnnotatedElementsSearch does't support Kotlin object
• KT-31129 Call only Kotlin-specific reference contributors for getting Kotlin references from PSI
• KT-31693 Project with no Kotlin: JPS rebuild fails with NCDFE for GradleSettingsService at KotlinMPPGradleProjectTaskRunner.canRun()
• KT-31466 SOE in Java highlighting when a Kotlin ultra-light method is invoked
• KT-31723 Exception from UAST for attempt to infer types inside unresolved call
• KT-31842 UOE: no descriptor for type constructor of TypeVariable(T)
• KT-31992 Fix ColorsIcon.scale(float) compatibility issue between IU-192.5118.30 and 1.3.40-eap-105

IDE. Completion

• KT-29038 Autocomplete "suspend" into "suspend fun" at top level and class level (except in kts top level)
• KT-29398 Add "arg" postfix template
• KT-30511 Replace extra space after autocompleting data class with file name by parentheses

IDE. Debugger

• KT-10636 Debugger: can't evaluate call of function type parameter inside inline function
• KT-18247 Debugger: class level watches fail to evaluate outside of class instance context
• KT-18263 Settings / Debugger / Java Type Renderers: unqualified Kotlin class members in Java expressions are shown as errors
• KT-23586 Non-trivial properties autocompletion in evaluation window
• KT-30216 Evaluate expression: declarations annotated with Experimental (LEVEL.ERROR) fail due to compilation error
• KT-30610 Debugger: Variables view shows second this instance for inline function even from the same class as caller function
• KT-30714 Breakpoints are shown as invalid for classes that are not loaded yet
• KT-30934 "InvocationException: Exception occurred in target VM" on debugger breakpoint hit (with kotlintest)
• KT-31266 Kotlin debugger incompatibility with latest 192 nightly: KotlinClassWithDelegatedPropertyRenderer
• KT-31785 Exception on attempt to evaluate local function

IDE. Gradle

• KT-29854 File collection dependency does not work with NMPP+JPS
• KT-30531 Gradle: NodeJS downloading
• KT-30767 Kotlin import uses too much memory when working with big projects
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-31014 Gradle, JS: Webpack watch mode
• KT-31843 Memory leak caused by KOTLIN_TARGET_DATA_NODE on project reimport
• KT-31952 Fix compatibility issues with IDEA after fixing IDEA-187832

IDE. Gradle. Script

• KT-30638 "Highlighting in scripts is not available until all Script Dependencies are loaded" in Diff viewer
• KT-31124 “compileKotlin - configuration not found: kotlinScriptDef, the plugin is probably applied by a mistake” after creating new project with IJ and Kotlin from master
• KT-30974 Script dependencies resolution failed error while trying to use Kotlin for Gradle

IDE. Hints

• KT-30057 "View->Type info" shows "Type is unknown" for named argument syntax

IDE. Inspections and Intentions

New Features

• KT-11629 Inspection: creating Throwable without throwing it
• KT-12392 Unused import with alias should be highlighted and removed with Optimize Imports
• KT-12721 inspection should be made for converting Integer.toString(int) to int.toString()
• KT-13962 Intention to replace Java collection constructor calls with function calls from stdlib (ArrayList() → arrayListOf())
• KT-15537 Add inspection + intention to replace IntRange.start/endInclusive with first/last
• KT-21195 ReplaceWith intention could save generic type arguments
• KT-25262 Intention: Rename class to containing file name
• KT-25439 Inspection "Map replaceable with EnumMap"
• KT-26269 Inspection to replace associate with associateWith or associateBy
• KT-26629 Inspection to replace == operator on Double.NaN with equals call
• KT-27411 Inspection and Quickfix to replace System.exit() with exitProcess()
• KT-29344 Convert property initializer to getter: suggest on property name
• KT-29666 Quickfix for "DEPRECATED_JAVA_ANNOTATION": migrate arguments
• KT-29798 Add 'Covariant equals' inspection
• KT-29799 Inspection: class with non-null self-reference as a parameter in its primary constructor
• KT-30078 Add "Add getter/setter" quick fix for uninitialized property
• KT-30381 Inspection + quickfix to replace non-null assertion with return
• KT-30389 Fix to convert argument to Int: suggest roundToInt()
• KT-30501 Add inspection to replace filter { it is Foo } with filterIsInstance and filter { it != null } with filterNotNull
• KT-30612 Unused symbol inspection should detect enum entry
• KT-30663 Fully qualified name is added on quick fix for original class name if import alias exists
• KT-30725 Inspection which replaces .sorted().first() with .min()

Fixes

• KT-5412 "Replace non-null assertion with if expression" should replace parent expression
• KT-13549 "Package directive doesn't match file location" for root package
• KT-14040 Secondary enum class constructor is marked as "unused" by IDE
• KT-18459 Spring: "Autowiring for Bean Class (Kotlin)" inspection adds not working @Named annotation to property
• KT-21526 used class is marked as "never used"
• KT-22896 "Change function signature" quickfix on "x overrides nothing" doesn't rename type arguments
• KT-27089 ReplaceWith quickfix doesn't take into account generic parameter
• KT-27821 SimplifiableCallChain inspection quick fix removes comments for intermediate operations
• KT-28485 Incorrect parameter name after running "Add parameter to function" intention when argument variable is upper case const
• KT-28619 "Add braces to 'if' statement" moves end-of-line comment inside an if branch if statement inside if is block
• KT-29556 "Remove redundant 'let' call" doesn't rename parameter with convention invoke call
• KT-29677 "Specify type explicitly" intention produces invalid output for type escaped with backticks
• KT-29764 "Convert property to function" intention doesn't warn about the property overloads at child class constructor
• KT-29812 False positive for HasPlatformType with member extension on 'dynamic'
• KT-29869 'WhenWithOnlyElse': possibly useless inspection with false grey warning highlighting during editing the code
• KT-30038 'Remove redundant Unit" false positive when return type is nullable Unit
• KT-30082 False positive "redundant .let call" for lambda functions stored in nullable references
• KT-30173 "Nested lambda has shadowed implicit parameter" is suggested when both parameters are logically the same
• KT-30208 Convert to anonymous object: lambda generic type argument is lost
• KT-30215 No "surround with null" check is suggested for an assignment
• KT-30228 'Convert to also/apply/run/with' intention behaves differently depending on the position of infix function call
• KT-30457 MoveVariableDeclarationIntoWhen: do not report gray warning on variable declarations taking multiple lines / containing preemptive returns
• KT-30481 Do not report ImplicitNullableNothingType on a function/property that overrides a function/property of type 'Nothing?'
• KT-30527 False positive "Type alias is never used" with import of enum member
• KT-30559 Redundant Getter, Redundant Setter: reduce range to getter/setter header
• KT-30565 False positive "Suspicious 'var' property" inspection with annotated default property getter
• KT-30579 Kotlin-gradle groovy inspections should depend on Groovy plugin
• KT-30613 "Convert to anonymous function" should not insert named argument when interoping with Java functions
• KT-30614 String templates suggest removing curly braces for backtick escaped identifiers
• KT-30622 Add names to call arguments starting from given argument
• KT-30637 False positive "unused constructor" for local class
• KT-30669 Import quick fix does not work for property/function with original name if import alias for them exist
• KT-30761 Replace assert boolean with assert equality produces uncompilable code when compared arguments type are different
• KT-30769 Override quickfix creates "sealed fun"
• KT-30833 Exception after "Introduce Import Alias" if invoke in import
• KT-30876 SimplifyNotNullAssert inspection changes semantics
• KT-30900 Invert 'if' condition respects neither code formatting nor inline comments
• KT-30910 "Use property access syntax" is not suitable as text for inspection problem text
• KT-30916 Quickfix "Remove redundant qualifier name" can't work with user type with generic parameter
• KT-31103 Don't invoke Gradle related inspections when Gradle plugin is disabled
• KT-31349 Add name to argument should not be suggested for Java library classes
• KT-31404 Redundant 'requireNotNull' or 'checkNotNull' inspection: don't remove first argument
• KT-25465 "Redundant 'suspend' modifier" with suspend operator invoke
• KT-26337 Exception (resource not found) in quick-fix tests in AS32
• KT-30879 False positive "Redundant qualifier name"
• KT-31415 UI hangs due to long computations for "Use property access syntax" intention with new inference
• KT-31441 False positive "Remove explicit type arguments" inspection for projection type
• KT-30970 No warning for empty if operator and alsomethod
• KT-31855 IDE + new inference: Java SAM conversion is not suggested by IDE services

IDE. JS

• KT-31895 New Project wizard: Kotlin Gradle + Kotlin/JS for Node.js: incorrect DSL is inserted

IDE. Libraries

• KT-30790 Unstable IDE navigation behavior to expect/actual symbols in stdlib
• KT-30821 K/N: Navigation downwards the hierarchy in stdlib source code opens to stubs

IDE. Misc

• KT-31364 IntelliJ routinely hangs and spikes CPU / Memory usage when editing kotlin files

IDE. Navigation

• KT-18322 Find Usages not finding Java usage of @JvmField declared in primary constructor
• KT-27332 Gutter icons are still shown even if disabled

IDE. Refactorings

• KT-30471 Make KotlinElementActionsFactory.createChangeParametersActions able to just add parameters

IDE. Run Configurations

• KT-29352 Kotlin + Java 11 + Windows : impossible to run applications with long command lines, even with dynamic.classpath=true

IDE. Scratch

• KT-29642 Once hidden, Scratch Output window wouldn't show the results unless the project is reopened

IDE. Script

• KT-30295 Resolver for 'completion/highlighting in ScriptDependenciesSourceInfo...' does not know how to resolve [] or [Library(null)]
• KT-30690 Highlighting for scripts in diff view doesn't work for left part
• KT-31452 IDE editor: MISSING_SCRIPT_STANDARD_TEMPLATE is reported inconsistently with the single line in script

IDE. Tests Support

• KT-30995 Gradle test runner: "No tasks available" for a test class in non-MPP project

IDE. Ultimate

• KT-30886 KotlinIdeaResolutionException in Velocity template (.ft) with Kotlin code

IDE. Wizards

• KT-30645 Update New Project Wizard templates related to Kotlin/JS
• KT-31099 Remove Gradle configuration boilerplate for JS from multiplatform New Project Wizard templates related to Kotlin/JS
• KT-31695 Gradle, JS: update wizard templates

JS. Tools

• KT-31563 Gradle/JS: npmResolve fails with "Invalid version" when user project's version does not match npm rules
• KT-31566 Gradle/JS: with explicit call to nodejs { testTask { useNodeJs() } } configuration fails : "Could not find which method to invoke"
• KT-31560 Gradle: provide descriptions for JS tasks
• KT-31564 Gradle/JS: npmResolve reports warning "karma-webpack@3.0.5 has unmet peer dependency"
• KT-31662 Gradle/JS: with empty useKarma {} lambda the execution of jsBrowserTest never stops
• KT-31686 Gradle/JS: useKarma { useConfigDirectory() } fails to configure
• KT-31694 Gradle, NPM, windows: creating symlink requires administrator privilege
• KT-31931 Gradle JS or Native: test processing fails in some cases

JavaScript

• KT-31007 Kotlin/JS 1.3.30 - private method in an interface in the external library causes ReferenceError

Libraries

• KT-30174 Annotation for experimental stdlib API
• KT-30451 Redundant call of selector in maxBy&minBy
• KT-30560 Fix Throwable::addSuppressed from stdlib to make it work without stdlib-jdk7 in runtime
• KT-24810 Support common string<->ByteArray UTF-8 conversion
• KT-29265 String.toCharArray() is not available in common stdlib
• KT-31194 assertFails and assertFailsWith don't work with suspend functions
• KT-31639 'Iterbale.drop' drops too much because of overflow
• KT-28933 capitalize() with Locale argument in the JDK stdlib

Reflection

• KT-29041 KAnnotatedElement should have an extension function to verify if certain annotation is present
• KT-30344 Avoid using .kotlin_module in kotlin-reflect

Tools. Android Extensions

• KT-30993 Android Extensions: Make @Parcelize functionality non-experimental

Tools. CLI

• KT-27638 Add -Xjava-sources compiler argument to specify directories with .java source files which can be referenced from the compiled Kotlin sources
• KT-27778 Add -Xpackage-prefix compiler argument to specify package prefix for Java sources resolution
• KT-30973 Compilation on IBM J9 (build 2.9, JRE 1.8.0 AIX ppc64-64-Bit) fails unless -Xuse-javac is specified

Tools. Compiler Plugins

• KT-30343 Add new Quarkus preset to all-open compiler plugin

Tools. Gradle

New Features

• KT-20156 Publish the Kotlin Javascript Gradle plugin to the Gradle Plugins Portal
• KT-26256 In new MPP, support Java compilation in JVM targets
• KT-27273 Support the Gradle 'application' plugin in new MPP or provide an alternative
• KT-30528 Gradle, JS tests: support basic builtin test runner
• KT-31015 Gradle, JS: Change default for new kotlin-js and experimental kotlin-multiplatform plugins
• KT-30573 Gradle, JS: enable source maps by default, change paths relative to node_modules directory
• KT-30747 Gradle, JS tests: provide option to disable test configuration per target
• KT-31010 Gradle, JS tests: Mocha
• KT-31011 Gradle, JS tests: Karma
• KT-31013 Gradle, JS: Webpack
• KT-31016 Gradle: yarn downloading
• KT-31017 Gradle, yarn: support workspaces

Fixes

• KT-13256 CompileJava tasks in Kotlin2Js Gradle plugin
• KT-16355 Rename "compileKotlin2Js" Gradle task to "compileKotlinJs"
• KT-26255 Using the jvmWithJava preset in new MPP leads to counter-intuitive source set names and directory structure
• KT-27640 Do not use -Xbuild-file when invoking the Kotlin compiler in Gradle plugins
• KT-29284 kotlin2js plugin applies java plugin
• KT-30132 Could not initialize class org.jetbrains.kotlin.com.intellij.openapi.util.io.FileUtil on build by gradle
• KT-30596 Kotlin Gradle Plugin: Forward stdout and stderr logger of out of process though gradle logger
• KT-31106 Kotlin compilation fails with locked build script dependencies and Gradle 5
• KT-28985 Java tests not executed in a module created with presets.jvmWithJava
• KT-30340 kotlin("multiplatform") plugin is not working properly with Spring Boot
• KT-30784 Deprecation warning "API 'variant.getPackageLibrary()' is obsolete and has been replaced with 'variant.getPackageLibraryProvider()'" for a multiplatform library with Android target
• KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)
• KT-31696 Gradle, NPM: select one version between tools and all of compile configurations
• KT-31697 Gradle, NPM: report about clashes in packages_imported
• KT-31891 Gradle: JS or Native tests execution: build --scan fails with ISE "Expected attachment of type ... but did not find it"
• KT-31023 Update Gradle module metadata warning in MPP publishing

Tools. Incremental Compile

• KT-31131 Regression: incremental compilation of multi-file part throws exception

Tools. J2K

• KT-23023 J2K: Inspection to convert Arrays.copyOf(a, size) to a.copyOf(size)
• KT-26550 J2K: Check context/applicability of conversion, don't suggest for libraries, jars, etc.
• KT-29568 Disabled "Convert Java File to Kotlin File" action is shown in project view context menu for XML files

Tools. JPS

• KT-13563 Kotlin jps-plugin should allow to instrument bytecode from Intellij IDEA.

Tools. REPL

• KT-21443 Kotlin's JSR223 script engine does not work when used by a fat jar

Tools. Scripts

• KT-30986 Missing dependencies when JSR-223 script engines are used from kotlin-script-util

Tools. kapt

• KT-26203 kapt.use.worker.api=true throws a NullPointerException on Java 10/11
• KT-30739 Kapt generated sources are not visible from the IDE when "Create separate module per source set" is disabled
• KT-31064 Periodically build crash when using incremental kapt
• KT-23880 Kapt: Support incremental annotation processors
• KT-31322 Kapt does not run annotation processing when sources change.
• KT-30979 Issue with Dagger2 providers MissingBinding with 1.3.30
• KT-31127 Kotlin-generating processor which uses Filer API breaks JavaCompile task
• KT-31714 incremental kapt: FileSystemException: Too many open files

1.3.31

Compiler

Fixes

• KT-26418 Back-end (JVM) Internal error when compiling decorated suspend inline functions
• KT-26925 Decorated suspend inline function continuation resumes in wrong spot
• KT-30706 Passing noinline lambda as (cross)inline parameter result in wrong state-machine
• KT-30707 Java interop of coroutines inside inline functions is broken
• KT-30997 Crash with suspend crossinline

IDE. Inspections and Intentions

• KT-30879 False positive "Redundant qualifier name"
• KT-31112 "Remove redundant qualifier name" inspection false positive for property with irrelevant import

JavaScript

• KT-31007 Kotlin/JS 1.3.30 - private method in an interface in the external library causes ReferenceError

Tools. Gradle

• KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)

Tools. kapt

• KT-30979 Issue with Dagger2 providers MissingBinding with 1.3.30

1.3.30

Compiler

New Features

• KT-19664 Allow more permissive visibility for non-virtual actual declarations
• KT-29586 Add support for Android platform annotations
• KT-29604 Do not implicitly propagate deprecations originated in Java

Performance Improvements

• KT-24876 Emit calls to java.lang.Long.divideUnsigned for unsigned types when target version is 1.8
• KT-25974 'when' by unsigned integers is not translated to tableswitch/lookupswitch
• KT-28015 Coroutine state-machine shall use Result.throwOnFailure
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges
• KT-29230 Specialize 'next' method call for unsigned integer range and progression iterators

Fixes

• KT-7185 Parse import directives in the middle of the file, report a diagnostic instead
• KT-7237 Parser recovery (angle bracket mismatch)
• KT-11656 Could not generate LightClass because of ISE from bridge generation on invalid code
• KT-13497 Better recovery in comma-separated lists in case of missing comma
• KT-13703 Restore parser better when class is missing from enum declaration
• KT-13731 Recover parser on value parameter without a type
• KT-14227 Incorrect code is generated when using MutableMap.set with plusAssign operator
• KT-19389 Couldn't inline method call 'with'
• KT-20065 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with generic typealias
• KT-20322 Debug: member value returned from suspending function is not updated immediately
• KT-20780 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with parameterized inner type alias
• KT-21405 Throwable “Rewrite at slice LEXICAL_SCOPE key: VALUE_PARAMETER_LIST” on editing string literal in kotlin-js module
• KT-21775 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with typealias used from a different module
• KT-22818 "UnsupportedOperationException: Don't know how to generate outer expression" on using non-trivial expression in default argument of expect function
• KT-23117 Local delegate + local object = NoSuchMethodError
• KT-23701 Report error when -Xmultifile-parts-inherit is used and relevant JvmMultifileClass parts have any state
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24490 Wrong type is inferred when last expression in lambda has functional type
• KT-24871 Optimize iteration and contains for UIntRange/ULongRange
• KT-24964 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with Validated typealias from Arrow
• KT-25383 Named function as last statement in lambda doesn't coerce to Unit
• KT-25431 Type mismatch when trying to bind mutable property with complex common system
• KT-25435 Try/catch as the last expression of lambda cause type mismatch
• KT-25437 Type variable fixation of postponed arguments and type variables with Nothing constraint
• KT-25446 Empty labeled return doesn't force coercion to Unit
• KT-26069 NoSuchMethodError on calling remove/getOrDefault on a Kotlin subclass of Java subclass of Map
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26816 Lambdas to Nothing is inferred if multilevel collections is used (listOf, mapOf, etc)
• KT-27190 State machine elimination after inlining stopped working (regression)
• KT-27241 Contracts: smartcasts don't work correctly if type checking for contract function is used
• KT-27565 Lack of fallback resolution for SAM conversions for Kotlin functions in new inference
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28182 Kotlin Bytecode tool window shows incorrect output on annotated property with backing field
• KT-28236 "Cannot serialize error type: [ERROR : Unknown type parameter 2]" with inferred type arguments in generic extension function from Arrow
• KT-28309 Do not generate LVT entries with different types pointing to the same slot, but have different types
• KT-28317 Strange behavior in testJvmAssertInlineFunctionAssertionsEnabled on Jdk 6 and exception on JDK 8
• KT-28453 Mark anonymous classes for callable references as synthetic
• KT-28598 Type is inferred incorrectly to Any on a deep generic type with out projection
• KT-28654 No report about type mismatch inside a lambda in generic functions with a type parameter as a return type
• KT-28670 Not null smartcasts on an intersection of nullable types don't work
• KT-28718 progressive mode plus new inference result in different floating-point number comparisons
• KT-28810 Suspend function's continuation parameter is missing from LVT
• KT-28855 NoSuchMethodError with vararg of unsigned Int in generic class constructor
• KT-28984 Exception when subtype of kotlin.Function is used as an expected one for lambda or callable reference
• KT-28993 Incorrect behavior when two lambdas are passed outside a parenthesized argument list
• KT-29144 Interface with companion object generates invalid bytecode in progressive mode
• KT-29228 Intrinsify 'for' loop for unsigned integer ranges and progressions
• KT-29324 Warnings indexing jdk 11 classes
• KT-29367 New inference doesn't wrap annotated type from java to TypeWithEnhancement
• KT-29507 @field-targeted annotation on property with both getter and setter is absent from bytecode
• KT-29705 'Rewrite at slice CONSTRUCTOR` of JS class while editing another JVM-class
• KT-29792 UnsupportedOperationException: Unsupported annotation argument type when using Java annotation with infinity or NaN as a default value
• KT-29891 Kotlin doesn't allow to use local class literals as annotation arguments
• KT-29912 Crossinline nonsuspend lambda leads to KNPE during inlining
• KT-29965 Don't generate annotation on $default method
• KT-30030 Extensive 'Rewrite at slice'-exception with contracts in JS module of multiplatform project
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-26150 KotlinFrontendException is thrown when callsInPlace called twice with different InvocationKind in functions with contracts
• KT-26153 Contract is allowed when it's at the beginning in control flow terms, but not in tokens order terms (contract doesn't work)
• KT-26191 Contract may not be the first statement if it's part of the expression
• KT-29178 Prohibit arrays of reified type parameters in annotation arguments in local classes / anonymous objects
• KT-20507 PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL not reported for generic base class constructor call, IAE at run-time
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-28285 NullPointerException on calling Array constructor compiled via Excelsior JET
• KT-29376 Report a deprecation warning when comparing enum to any other incompatible type
• KT-29884 Report warning on @Synchronized on inline method
• KT-30073 ClassCastException on coroutine start with crossinline lambda
• KT-30597 "Extend selection" throws exception in empty class body case
• KT-29492 Double cross-inline of suspending functions produces incorrect code
• KT-30508 Wrong file name in metadata of suspend function capturing crossinline lambda
• KT-30679 "KotlinFrontEndException: Front-end Internal error: Failed to analyze declaration" exception during a compilation of a multiplatform project containing Kotlin Script File

IDE

New Features

• KT-26950 Support Multiline TODO comments
• KT-29034 Make JvmDeclarationSearch find private fields in kotlin classes

Performance Improvements

• KT-29457 FindImplicitNothingAction#update freezes UI for 30 secs
• KT-29551 CreateKotlinSdkActivity runs on UI thread

Fixes

• KT-11143 Do not insert closing brace for string template between open brace and identifier
• KT-18503 Optimize imports produces red code
• KT-27283 KotlinULiteralExpression and PsiLanguageInjectionHost mismatch
• KT-27794 KotlinAnnotatedElementsSearcher doesn't process method parameters
• KT-28272 UAST: Need to be able to identify SAM conversions
• KT-28360 Getting tons of "There are 2 classes with same fqName" logs in IntelliJ
• KT-28739 Bad caret position after Insert curly braces around variable inspection
• KT-29013 Injection with interpolation loses suffix
• KT-29025 Implement UReferenceExpression.referenceNameElement for Kotlin
• KT-29287 Exception in ultra-light classes on method annotated with @Throws
• KT-29381 Highlight return lambda expressions when cursor is one the call with lambda argument
• KT-29434 Can not detect injection host in string passed as argument into arrayOf() function
• KT-29464 Project reopening does not create missing Kotlin SDK for Native modules (like it does for other non-JVM ones)
• KT-29467 Maven/Gradle re-import does not add missing Kotlin SDK for kotlin2js modules (non-MPP JavaScript)
• KT-29804 Probable error in the "Kotlin (Mobile Android/iOS)" new project template in IntelliJ
• KT-30033 UAST: Delegation expression missing from parse tree
• KT-30388 Disable constant exception reporting from release versions
• KT-30524 "java.lang.IllegalStateException: This method shouldn't be invoked for LOCAL visibility" on add import
• KT-30534 KotlinUObjectLiteralExpression returns classReference whose referenceNameElement is null
• KT-30546 Kotlin UImportStatement's children references always resolve to null
• KT-5435 Surround with try/catch should generate more Kotlin-style code

IDE. Android

• KT-29847 Many IDEA plugins are not loaded in presence of Kotlin plugin: "Plugins should not have cyclic dependencies"

IDE. Code Style, Formatting

• KT-23295 One-line comment indentation in functions with expression body
• KT-28905 When is "... if long" hitting?
• KT-29304 Settings / Code Style / Kotlin mentions "methods" instead of functions
• KT-26954 Bad indentation for single function with expression body in new code style

IDE. Completion

• KT-18663 Support "smart enter/complete statement" completion for method calls
• KT-28394 Improve code completion for top level class/interface to incorporate filename
• KT-29435 org.jetbrains.kotlin.types.TypeUtils.contains hanging forever and freezing IntelliJ
• KT-27915 Stop auto-completing braces for companion objects

IDE. Debugger

• KT-22250 Evaluate: 'this' shows different values when evaluated as a variable/watch
• KT-24829 Access to coroutineContext in 'Evaluate expression'
• KT-25220 Evaluator: a instance of Pair returned instead of String ("Extract function" failed)
• KT-25222 Evaluate: ClassCastException: ObjectValue cannot be cast to IntValue ("Extract function" failed)
• KT-26913 Change local variable name mangling ($receiver -> this_)
• KT-28087 [Kotlin/JVM view] Inconsistent debugging data inside forEachIndexed
• KT-28134 Separate JVM/Kotlin views in "Variables" tool window
• KT-28192 Exception from KotlinEvaluator: cannot find local variable
• KT-28680 Missing this word completion in "Evaluate expression" window
• KT-28728 Async stack trace support for Kotlin coroutines
• KT-21650 Debugger: Can't evaluate value, resolution error
• KT-23828 Debugger: "Smart cast is impossible" when evaluating expression
• KT-29661 Evaluate expression: "Cannot find local variable" for variable name escaped with backticks
• KT-29814 Can't evaluate a property on star-projected type
• KT-29871 Debugger in IDE does not handle correctly extensions.
• KT-30182 Incorrect KT elvis expression debugger evaluation
• KT-29189 [BE] 'Step Over' falls through 'return when' (and 'return if') instead of executing individual branches
• KT-29234 ISE “@NotNull method org/jetbrains/kotlin/codegen/binding/CodegenBinding.anonymousClassForCallable must not return null” on debugging with breakpoints in Kotlin script file
• KT-29423 Unable to evaluate lambdas on jdk 9-11
• KT-30220 Empty variables view when breakpoint inside an lambda inside class
• KT-30318 KotlinCoroutinesAsyncStackTraceProvider slows down java debugging
• KT-17811 Couldn't inline method error for inline method with anonymous object initialization and reified type parameter
• KT-30611 Debugger: in projects with stdlib of 1.2.n version Frames view can't complete loading, EvaluateException: "Method threw 'java.lang.ClassNotFoundException' exception." at EvaluateExceptionUtil.createEvaluateException()

IDE. Decompiler

• KT-9618 Exception in ClassClsStubBuilder.createNestedClassStub() while opening recent project
• KT-29427 Exception in ClassClsStubBuilder.createNestedClassStub() for obfuscated library

IDE. Gradle

• KT-26865 Gradle build in IDE: error messages in Native sources are not hyperlinks
• KT-28515 Failed to import Kotlin project with gradle 5.0
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-30076 Memory leaks in Kotlin import
• KT-30379 Gradle 5.3 publishes an MPP with broken Maven scope mapping

IDE. Gradle. Script

• KT-27684 Gradle Kotlin DSL: the rootProject field is unresolved in IDEA for a common module
• KT-29465 IndexNotReadyException on context menu invocation for build.gradle.kts file
• KT-29707 "Navigate declaration" navigates to compiled class in gradle cache folder instead of classes defined in gradle buildSrc folder
• KT-29832 Multiple Script Definitions for settings.gradle.kts
• KT-30623 Errors in build.gradle.kts after applying new script dependencies
• KT-29474 Regression in 1.3.20: Kotlin IDE plugin parses all *.gradle.kts files when any class in buildSrc is opened
• KT-30130 “Access is allowed from event dispatch thread only.” from ScriptNewDependenciesNotificationKt.removeScriptDependenciesNotificationPanel() on creating foo.gradle.kts files in IJ from master

IDE. Hints

• KT-29196 Variable type hints are redundant for constructor calls of nested classes
• KT-30058 IndexNotReadyException from quick documentation when popup is active

IDE. Hints. Inlay

• KT-19558 Wrong position of type hint while renaming Kotlin variable
• KT-27438 "Show lambda return expression hints" breaks code indentation
• KT-28870 Rework "Lambda return expression" hint as between_lines_hint of disable it by default

IDE. Hints. Parameter Info

• KT-29574 Incorrect parameter info popup for lambda nested in object

IDE. Inspections and Intentions

New Features

• KT-16118 "Introduce import alias" intention
• KT-17119 Inspection for (Scala-like) = { ... } syntax without expected type in function definition
• KT-26128 Inspection for suspension inside synchronized and withLock functions
• KT-27556 Add intention for collections, !collection.isEmpty() -> collection.isNotEmpty()
• KT-27670 Add quick fix: wrap expression in a lambda if compatible functional type is required
• KT-28803 Inspection: result of enum entries comparison is always false / true
• KT-28953 Add intention to add underscores to decimal numerical literal
• KT-29001 Add intention to move variable declaration before when-expression into when's subject
• KT-29113 Warn about redundant requireNotNull and checkNotNull usages
• KT-29321 "Remove empty primary constructor": apply for enum entries
• KT-12134 Suggest to remove qualifier in FQN name
• KT-17278 Inspection to replace Java 8 Map.forEach with Kotlin's forEach
• KT-26965 Add inspection + quickfix for replacing Collection.count() with .size
• KT-30123 Add intention to replace isEmpty/isNotEmpty method negation
• KT-25272 Unused expression as last expression of normal function should have quickfix to add "return"
• KT-30456 Improve: intention "Introduce Import Alias" should suggest new names for the new alias.

Fixes

• KT-7593 On splitting property declaration for functional expression additional bracket added
• KT-12273 "Replace with operator" intention is suggested for some non-operator functions and produces invalid code
• KT-18715 Replace if with elvis swallows comments
• KT-19254 Intention to convert object literal to class always creates a class named "O"
• KT-25501 "Replace overloaded operator with function call" changes semantics of increment and decrement operators
• KT-26979 "Lambda argument inside parentheses" inspection is not reported, if function type is actual type argument, but not formal parameter type
• KT-27143 Intention "Replace camel-case name with spaces" is suggested for snake_case names in test functions and renames them incorrectly
• KT-28081 "Convert to lambda" changes expression type for interface with multiple supertypes
• KT-28131 False positive "Redundant lambda arrow" with a functional type argument
• KT-28224 "Add braces to 'else' statement" moves comment outside braces when 'if-else' is inside 'if / when' branch
• KT-28592 False positive "Remove redundant backticks" for underscore variable name
• KT-28596 "Can be replaced with binary operator" shouldn't be suggested when receiver or argument is floating point type
• KT-28641 "Remove useless cast" produces a dangling lambda ("Too many arguments" error)
• KT-28698 "Convert to apply" intention: include function calls with this passed as an argument
• KT-28773 Kotlin/JS: Wrong inspection to replace .equals() with == on dynamic values
• KT-28851 'Convert parameter to receiver' adds Array<out T> wrapper to vararg parameter and drops override modifier in implementations
• KT-28969 TYPE_MISMATCH in array vs non-array case: two quick fixes exist for annotation and none of them adds array literal
• KT-28995 "Add parameter to constructor" quickfix for first enum member changes arguments for all members
• KT-29051 "Add parameter to constructor" quickfix for not-first enum member: "PsiInvalidElementAccessException: Element: class org.jetbrains.kotlin.psi.KtStringTemplateExpression #kotlin because: different providers"
• KT-29052 "Add parameter to constructor" quickfix for not-first enum member inserts FQN type for parameter
• KT-29056 KNPE in ConvertPrimaryConstructorToSecondary with missing property identifier
• KT-29085 False positive "Class member can have 'private' visibility" for a const val used in a public inline function
• KT-29093 False positive inspection "Redundant lambda arrow" with nested lambdas
• KT-29099 "Convert to apply" intention is not available for a single function call
• KT-29128 False positive 'Explicitly given type is redundant here' when typealias is used
• KT-29153 False negative "'rangeTo' or the '..' call should be replaced with 'until'" with bracketed expressions
• KT-29193 Quick fix "Create extension function" List<Int>.set should not be suggested for read-only collections
• KT-29238 Non-canonical modifiers order inspection incorrectly includes annotations into range
• KT-29248 "Convert member to extension" doesn't preserve visibility
• KT-29416 False positive "Redundant property getter" for external getter
• KT-29469 False positive in "Boolean literal argument without parameter name" inspection for varargs parameters
• KT-29549 Make package name convention inspection global
• KT-29567 "Remove empty class body" is a poor name for inspection text
• KT-29606 Do not propose to remove unused parameter of property setter
• KT-29763 False negative "Object literal can be converted to lambda" for block body function with explicit return
• KT-30007 False negative "Add import for '...'" in UserType
• KT-19944 multiplatform: Convert expect/actual function to property should keep the caret on the converted function
• KT-27289 "Create" quick fix on FQN does nothing with KNPE at KotlinRefactoringUtilKt$chooseContainerElement$1.renderText()
• KT-29312 "Make constructor parameter a property" produces wrong modifier order + exception "Invalid range specified"
• KT-29414 "Main parameter is not necessary" inspection reports parameter of main() in object
• KT-29499 "Unsafe call of inline function with nullable extension receiver" inspection ignores inferred nullability
• KT-29927 Missing "Import members from" intention with type check operator in when branch
• KT-30010 Introduce alternative quick-fixes for map[key]!!
• KT-30166 False positive "Redundant companion reference" on companion with the outer class name
• KT-14886 Create Property from Usage should place generated property next to other properties
• KT-16139 Adding explicit type argument leads to type mismatch
• KT-19462 False positive inspection "Redundant lambda arrow" for overloaded functions
• KT-22137 Create class quickfix is not suggested in return statement
• KT-23259 False positive unchecked cast warning/quickfix result in good code turning red
• KT-27641 "Specify type explicitly" suggests too general type even when type hint shows specific generic type
• KT-29124 False positive inspection 'Redundant lambda arrow' with generic function/constructor with lambda argument
• KT-29590 False positive inspection "Redundant lambda arrow" with vararg lambda arguments passed via spread operator
• KT-29977 False positive "Unused import directive" for typealias of an enum imported as static
• KT-30233 Change order of the quick fixes when method does not accept nullable types
• KT-30341 False positive 'Use withIndex() instead of manual index increment' inspection with destructive declaration in 'for' loop
• KT-30414 "Replace return with 'if' expression" drops return label
• KT-30426 Don't preserve extra line when adding remaining branches for when
• KT-30433 "Convert member to extension" doesn't update external Kotlin calls
• KT-30117 Kotlin unused import analysis accesses file editor manager model outside UI thread
• KT-29143 Unnecessary primary constructor keyword inspection
• KT-29444 "Make public" intention does not remove additional white-space to conform to proper style
• KT-30337 Do not propose to move variable declaration into "when" if it's not used inside the when-expression

IDE. Multiplatform

• KT-29918 Outdated Ktor version in Kotlin (JS Client/JVM Server) multiplatform project generated via New Project Wizard

IDE. Navigation

• KT-26924 Overriding Methods list has more values than it should be in case of inline class
• KT-28661 "Is implemented in" gutter icon shows duplicate function implementations in inline classes
• KT-28838 Group by file structure doesn't work for text search in Kotlin

IDE. Refactorings

• KT-27602 Kotlin property renaming change target name several times during rename making it hard to process it by reference handlers
• KT-29062 Extract Superclass refactoring throws Exception if sourceRoots.size() <= 1
• KT-29796 Label rename refactoring does not work on label usage

IDE. Scratch

• KT-23985 Allow to run Kotlin Worksheet without module classpath
• KT-27955 Interactive mode for Kotlin Scratch files
• KT-28958 Exception "Read access is allowed from event dispatch thread or inside read-action only" when running a scratch file with "Use REPL" and "Make before Run" enabled
• KT-30200 "java.lang.Throwable: Couldn't find expression with start line ..." on edition of a scratch file during its execution with interactive mode enabled

IDE. Script

• KT-29770 IntelliJ IDEA makes too many requests for the classpath of a Gradle Kotlin build script
• KT-29893 IDE is frozen during project configuration because of ScriptTemplatesFromDependenciesProvider
• KT-30146 Preferences from Kotlin scripting section reset to default after project reopening

IDE. Tests Support

• KT-25956 With failed test function class gutter icon is "failure", but function icon is "success"

IDE. Wizards

• KT-17829 Please unify naming of Kotlin projects and frameworks for JVM
• KT-28941 Tip of the day: obsolete project types from "New project wizard"

Libraries

• KT-27108 .toDouble() and .toFloat() conversions for unsigned types
• KT-29520 Random.Default cannot be used asJavaRandom
• KT-30109 Documentation for Result.onSuccess and Result.onFailure are flipped around
• KT-26378 'contains' overloads for unsigned integer ranges with other unsigned integer types
• KT-26410 High-order function overloads for unsigned arrays
• KT-27262 Binary search for specialized arrays of unsigned integers
• KT-28339 Add fill extension function for unsigned primitive arrays
• KT-28397 UByteArray plus UByteArray = List
• KT-28779 Implement method sum() for arrays of unsigned primitives
• KT-29151 Documentation for CharSequence.take() & String.take() shows examples of Iterable.take()
• KT-30035 add max/maxOf/min/minOf for unsigned types
• KT-30051 elementAt extension function of Array/PrimitiveAray/UnsignedArray does not throw IndexOutOfBoundException on incorrect index (JS only)
• KT-30141 JS: document Array.get behavior
• KT-30704 Documentation of Random function not quite correct

Tools. CLI

• KT-26240 Support JVM bytecode targets 9, 10, 11, 12

Tools. Gradle

• KT-12295 Gradle IC: Compile error leads to non-incremental build
• KT-12700 Add a way to diagnose IC problems
• KT-26275 Check new MPP IC
• KT-27885 Drop support for Gradle 3.x and earlier
• KT-27886 Drop support for Android Gradle plugin 2.x
• KT-28552 Gradle 4.7 import fails on Kotlin/mpp projects with Java11
• KT-29275 Drop support for Gradle 4.0
• KT-29758 Gradle build failed with exception on publication of a multiplatform library with Gradle metadata enabled: org.jetbrains.kotlin.gradle.plugin.mpp.HierarchyAttributeContainer cannot be cast to org.gradle.api.internal.attributes.AttributeContainerInternal
• KT-29966 Fix inter-project IC with new MPP for JS/JVM targets
• KT-27059 Ensure a dependency on the multiplatform project in the POM when publishing a single-platform module with the maven plugin
• KT-29971 ConcurrentModificationException in Kotlin Gradle plugin (GradleCompilerRunner.buildModulesInfo)
• KT-21030 Automatically detect java 1.8 sources in kotlin-android gradle plugin
• KT-27675 Enable Kapt build cache by default
• KT-27714 Kotlin MPP Android targets don't have their attributes copied to the configurations of the compilations
• KT-29761 Inter-project IC does not work for kaptGenerateStubs* tasks on Android
• KT-29823 Update 'org.gradle.usage' attribute rules to support the 'JAVA_API_JARS' value
• KT-29964 A universal Gradle DSL way of configuring all compilations of all targets doesn't work for Android target of a multiplatform project
• KT-30276 Warn if the Kotlin Gradle plugin is loaded multiple times
• KT-30322 Memory leak in CompilationSourceSetUtil
• KT-30492 Classes not removed for out/in process compilation

Tools. J2K

• KT-29713 java.lang.IllegalStateException at converting @RestController java file to Kotlin file

Tools. JPS

• KT-30137 Deadlock during concurrent classloading

Tools. Maven

• KT-29251 NSME: MavenProjectsManager.scheduleArtifactsDownloading() at KotlinMavenImporter.scheduleDownloadStdlibSources()

Tools. REPL

• KT-19276 Console spam when opening idea-community project in debug IDEA

Tools. Scripts

• KT-29296 Script evaluation - impossible to set base classloader to null
• KT-27051 Support dynamic versions in @file:DependsOn
• KT-27815 Compiler options in the scripting compilation configuration are ignored on compilation/evaluation
• KT-28593 Idea tries to associate file type with the script definition discovery file
• KT-29319 scripts default jvmTarget causes inlining problems - default should be 1.8
• KT-29741 KJvmCompiledScript can not be deserialized KJvmCompiledModule if it's null
• KT-30210 Coroutines in main.kts crash with NoSuchMethodError because kotlin-main-kts.jar has embedded coroutines

Tools. kapt

• KT-26977 kapt plugin applied in platform.jvm module preventing visibility of common code
• KT-27506 Kapt error "no interface expected here" in class implementing interface with secondary constructor
• KT-28220 kapt can generate invalid stub files for imports of enum constants
• KT-28306 Cannot extend an generic interface with function body while using kapt and correctErrorTypes in Kotlin 1.3
• KT-23880 Kapt: Support incremental annotation processors
• KT-29302 Java classes doesn't resolve Kotlin classes when kapt.use.worker.api = true
• KT-30163 Kapt: Javadoc in Java source model mangled (leading asterisks are preserved)

Docs & Examples

• KT-30091 KClass documentation incorrectly shows all members available on all platforms
• KT-30100 Clarify Map.toSortedMap docs
• KT-30418 Documentation for floor() and ceil() functions is misleading
• KT-29373 MutableSet.add documentation is confusing

1.3.21

Compiler

Fixes

• KT-29475 IllegalArgumentException at getAbstractTypeFromDescriptor with deeply nested expression inside function named with a right parenthesis
• KT-29479 WARN: Could not read file on Java classes from JDK 11+
• KT-29360 Kotlin 1.3.20-eap-100: This marker function should never been called. Looks like compiler did not eliminate it properly. Please, report an issue if you caught this exception.

IDE

Fixes

• KT-29486 Throwable: "Could not find correct module information" through IdeaKotlinUastResolveProviderService.getBindingContext() and ReplaceWithAnnotationAnalyzer.analyzeOriginal()
• KT-29394 Kotlin 1.3.20 EAP: Excess log messages with kotlin.parallel.tasks.in.project=true
• KT-29474 Regression in 1.3.20: Kotlin IDE plugin parses all *.gradle.kts files when any class in buildSrc is opened
• KT-29290 Warning "function returning deferred with a name that does not end with async" should not be displayed for let/also/apply...
• KT-29494 Don't report BooleanLiteralArgumentInspection in batch (offline) mode with INFORMATION severity
• KT-29525 turning on parallel tasks causes java.lang.NoClassDefFoundError: Could not initialize class kotlin.Unit sometimes
• KT-27769 Change the DSL marker icon
• KT-29118 Log polluted with multiple "Kotlin does not support alternative resolve" reports

IDE. Multiplatform

• KT-28128 MPP Kotlin/Native re-downloads POM files on IDE Gradle refresh

IDE. REPL

• KT-29400 IDE REPL in Gradle project: "IllegalStateException: consoleView must not be null" on module build

Libraries

Fixes

• KT-29612 jlink refuses to consume stdlib containing non-public package kotlin.native

Tools. CLI

• KT-29596 "AssertionError: Cannot load extensions/common.xml from kotlin-compiler.jar" on IBM JDK 8

Tools. Gradle

• KT-29476 1.3.20 MPP Android publishing common api configuration with runtime scope
• KT-29725 MPP Gradle 5.2: NoSuchMethodError in WrapUtil
• KT-29485 In MPP with Gradle module metadata, POM rewriting does not replace the root module publication with a platform one if the former has a custom artifact ID

Tools. Scripts

• KT-29490 Regression in 1.3.20: Kotlin Jsr223 script engine cannot handle functional return types

Tools. Kapt

• KT-29481 Annotation processors run on androidTest source set even without the kaptAndroidTest declaration
• KT-29513 kapt throws "ZipException: zip END header not found", when Graal SVM jar in classpath

1.3.20

Android

• KT-22571 Android: Configure Kotlin should add implementation dependency instead of compile

Compiler

New Features

• KT-14416 Support of @PolymorphicSignature in Kotlin compiler
• KT-22704 Allow expect annotations with actual typealias to Java to have default argument values both in expected and in actual
• KT-26165 Support VarHandle in JVM codegen
• KT-26999 Inspection for unused main parameter in Kotlin 1.3

Performance Improvements

• KT-16867 Proguard can't unbox Kotlin enums to integers
• KT-23466 kotlin compiler opens-reads-closes .class files many times over
• KT-25613 Optimise boxing of inline class values inside string templates

Fixes

• KT-2680 JVM backend should generate synthetic constructors for enum entries (as javac does).
• KT-6574 Enum entry classes should be compiled to package private classes
• KT-8341 Local variable cannot have type parameters
• KT-14529 JS: annotations on property accessors are not serialized
• KT-15453 Annotations are ignored on accessors of private properties
• KT-18053 Unexpected behavior with "in" infix operator and ConcurrentHashMap
• KT-18592 Compiler cannot resolve trait-based superclass of Groovy dependency
• KT-19613 "Public property exposes its private type" not reported for primary constructor properties
• KT-20344 Unused private setter created for property
• KT-21862 java.lang.NoSuchFieldError when calling isInitialized on a lateinit "field" of a companion object
• KT-21946 Compilation error during default lambda inlining when it returns anonymous object
• KT-22154 Warning: Stripped invalid locals information from 1 method when compiling with D8
• KT-23369 Internal compiler error in SMAPParser.parse
• KT-23543 Back-end (JVM) Internal error: Couldn't inline method
• KT-23739 CompilationException: Back-end (JVM) Internal error: Couldn't inline method call: Unmapped line number in inlined function
• KT-24156 For-loop optimization should not be applied in case of custom iterator
• KT-24672 JVM BE: Wrong range is generated in LVT for variables with "late" assignment
• KT-24780 Recursive suspend local functions: "Expected an object reference, but found ."
• KT-24937 Exception from parser (EA-76217)
• KT-25058 Fix deprecated API usage in RemappingClassBuilder
• KT-25288 SOE when inline class is recursive through type parameter upper bound
• KT-25295 “Couldn't transform method node” error on compiling inline class with inherited interface method call
• KT-25424 No coercion to Unit when type argument specified explicitly
• KT-25702 @JvmOverloads should not be allowed on constructors of annotation classes
• KT-25893 crossinline suspend function leads to IllegalStateException: call to 'resume' before 'invoke' with coroutine or compile error
• KT-25907 "Backend Internal error" for a nullable loop variable with explicitly declared type in a for-loop over String
• KT-25922 Back-end Internal error : Couldn't inline method : Lambda inlining : invoke(Continuation) : Trying to access skipped parameter
• KT-26126 Front-end doesn't check that fun with contract and callsInPlace effect is an inline function; compiler crashes on val initialization
• KT-26366 UseExperimental with full qualified reference to marker annotation class is reported as error
• KT-26384 Compiler crash with nested multi-catch try, finally block and inline function
• KT-26505 Improve error message on missing script base class kotlin.script.templates.standard.ScriptTemplateWithArgs
• KT-26506 Incorrect bytecode generated for inner class inside inline class referencing outer 'this'
• KT-26508 Incorrect accessor generated for private inline class method call from lambda
• KT-26509 Internal compiler error on generating inline class private method call from companion object
• KT-26554 VerifyError: Bad type on operand stack for inline class with default parameter of underlying type
• KT-26582 Array literal of a primitive wrapper class is loaded as a primitive array literal
• KT-26608 Couldn't inline method call. RuntimeException: Trying to access skipped parameter: Ljava/lang/Object;
• KT-26658 Trying to access skipped parameter exception in code with crossinline suspend lambda with suspend function with default parameter call
• KT-26715 NullPointerException for an inline class constructor reference
• KT-26848 Incorrect line in coroutine debug metadata for first suspension point
• KT-26908 Inline classes can't have a parameter with a default value (Platform declaration clash)
• KT-26931 NSME “InlineClass.foo-impl(LIFace;)I” on calling inherited method from inline class instance
• KT-26932 CCE “Foo cannot be cast to java.lang.String” when accessing underlying value of inline class through reflection
• KT-26998 Default extension fun call in generic Kotlin interface with inline class substituted type of extension receiver fails with internal compiler error
• KT-27025 Inline class access to private companion object fun fails with VerifyError
• KT-27070 Delegated property with inline class type delegate fails with internal error in codegen
• KT-27078 Inline class instance captured in closure fails with internal error (incorrect bytecode generated)
• KT-27107 JvmStatic in inline class companion doesn't generate static method in the class
• KT-27113 Inline class's toString is not called when it is used in string extrapolation
• KT-27140 Couldn't inline method call 'ByteArray' with inline class
• KT-27162 Incorrect container is generated to callable reference classes for references to inline class members
• KT-27259 "Internal error: wrong code generated" for nullable inline class with an inline class underlying type
• KT-27318 Interface implementation by delegation to inline class type delegate fails with internal error in codegen
• KT-27358 Boxed inline class type default parameter values fail with CCE at run-time
• KT-27416 "IllegalStateException: Backend Internal error" for inline class with a function with default argument value
• KT-27429 "-java-parameters" compiler argument fails in constructor when there is an inline class parameter present
• KT-27513 Backend Internal Error when using inline method inside inline class
• KT-27560 Executing getter of property with type kotlin.reflect.KSuspendFunction1 throws MalformedParameterizedTypeException
• KT-27705 Internal compiler error (incorrect bytecode generated) when inner class constructor inside inline class references inline class primary val
• KT-27706 Internal compiler error (incorrect bytecode generated) when inner class inside inline class accepts inline class parameter
• KT-27732 Using type inference on platform types corresponding to unsigned types causes compiler error
• KT-27737 CCE for delegated property of inline class type
• KT-27762 The lexer crashes when a vertical tabulation is used
• KT-27774 Update asm to 7.0 in Kotlin backend
• KT-27948 "Argument 2: expected R, but found I" for equals operator on nullable and non-null unsigned types
• KT-28054 Inline class: "Cannot pop operand off an empty stack" for calling private secondary constructor from companion object
• KT-28061 Safe call operator and contracts: false negative "A 'return' expression required in a function with a block body"
• KT-28185 Incorrect behaviour of javaClass intrinsic for receivers of inline class type
• KT-28188 CCE when bound callable reference with receiver of inline class type is passed to inline function
• KT-28237 CoroutineStackFrame uses slashes instead of dots in FQN
• KT-28361 Class literal for inline class should return KClass object of the wrapper
• KT-28385 Rewrite at slice FUNCTION in MPP on "red" code
• KT-28405 VE “Bad type on operand stack” at runtime on creating inline class with UIntArray inside
• KT-28585 Inline classes not properly boxed when accessing a var (from enclosing scope) from lambda
• KT-28847 Compilation fails with "AssertionError: Rewrite at slice FUNCTOR" on compiling complicated case with delegating property
• KT-28879 "AnalyzerException: Expected I, but found R" when compiling javaClass on inline class value
• KT-28920 "AnalyzerException: Expected I, but found R" when compiling javaObjectType/javaPrimitiveType with inline classes
• KT-28965 Unsound smartcast to definitely not-null if value of one generic type is cast to other generic type
• KT-28983 Wrong mapping of flexible inline class type to primitive type

IDE

New Features

• KT-25906 Kotlin language injection doesn't evaluate constants in string templates
• KT-27461 Provide live template to generate main() with no parameters
• KT-28371 Automatically align ?: (elvis operator) after call on the new line

Performance Improvements

• KT-23738 Provide stubs for annotation value argument list
• KT-25410 Opening Settings freezes the UI for 23 seconds
• KT-27832 Improve performance of KotlinGradleProjectResolverExtension
• KT-28755 Optimize searching constructor delegation calls
• KT-29297 Improve performance of light classes in IDE (Java-to-Kotlin interop)

Fixes

• KT-9840 Right parenthesis doesn't appear after class name before the colon
• KT-13420 Extend Selection: lambda: whole literal with braces is selected after parameters
• KT-17502 Do not disable "Generate equals and hashCode" actions for data classes
• KT-22590 Create Kotlin SDK if it's absent on importing from gradle/maven Kotlin (JavaScript) projects and on configuring java project to Kotlin(JavaScript), Kotlin(Common)
• KT-23268 IntelliJ plugin: Variables from destructing declarations are not syntax colored as variables
• KT-23864 Copyright message is duplicated in kotlin file in root package after updating copyright
• KT-25156 SOE in IDE on destructuring delegated property declaration
• KT-25681 Remove "Coroutines (experimental)" settings from IDE and do not pass -Xcoroutines to JPS compiler (since 1.3)
• KT-26868 MPP: Gradle import: test dependencies get Compile scope
• KT-26987 "Extend Selection" is missing for labeled return
• KT-27095 Kotlin configuration: update EAP repositories to use https instead of http
• KT-27321 Cannot init component state if "internalArguments" presents in xml project structure (kotlinc.xml)
• KT-27375 Kotlin Gradle DSL script: "Unable to get Gradle home directory" in new project with new Gradle wrapper
• KT-27380 KotlinStringLiteralTextEscaper returns wrong offset on unparseable elements
• KT-27491 MPP JVM/JS wizard: Use Ktor in the skeleton
• KT-27492 Create some MPP wizard tests
• KT-27530 Kotlin Gradle plugin overwrites the JDK set by jdkName property of the Gradle Idea plugin
• KT-27663 Uast: don't store resolved descriptors in UElements
• KT-27907 Exception on processing auto-generated classes from AS
• KT-27954 Generate -> toString() using "Multiple templates with concatenation" should add spaces after commas
• KT-27941 MPP: Gradle import with "using qualified names" creates 2 modules with the same content root
• KT-28199 Could not get javaResolutionFacade for groovy elements
• KT-28348 Don't log or wrap ProcessCanceledException
• KT-28401 Show parameter info for lambdas during completion
• KT-28402 Automatically indent || and && operators
• KT-28458 New Project Wizard: move multiplatform projects to the new DSL
• KT-28513 Bad Kotlin configuration when old syntax is used for configured Gradle project with >= 4.4 version
• KT-28556 Wrong nullability for @JvmOverloads-generated method parameter in light classes
• KT-28997 Couldn't get delegate for class from any local class or object in script
• KT-29027 Kotlin LightAnnotations don't handle vararg class literals

IDE. Android

• KT-23560 Scratch: impossible to run scratch file from Android Studio
• KT-25450 NoClassDefFoundError when trying to run a scratch file in Android Studio 3.1.3, Kotlin 1.2.51
• KT-26764 kotlin content root isn't generated for Android module of a multiplatform project on Gradle import

IDE. Code Style, Formatting

• KT-5590 kotlin: line comment must not be on first column by default
• KT-24496 IntelliJ IDEA: Formatting around addition / subtraction not correct for Kotlin
• KT-25417 Incorrect formatting for comments on property accessors
• KT-27847 Destructured declaration continued on the next line is formatted with double indent
• KT-28070 Code style: "Align when multiline" option for "extends / implements list" changes formating of enum constants constructor parameters
• KT-28227 Formatter should not allow enum entries to be on one line with opening brace
• KT-28484 Bad formatting for assignment when continuation for assignments is disabled

IDE. Completion

• KT-18089 Completion for nullable types without safe call rendered in gray color is barely visible
• KT-20706 KDoc: Unneeded completion is invoked after typing a number/digit in a kdoc comment
• KT-22579 Smart completion should present enum constants with higher rank
• KT-23834 Code completion and auto import do not suggest extension that differs from member only in type parameter
• KT-25312 Autocomplete for overridden members in expected class inserts extra override word
• KT-26632 Completion: "data class" instead of "data"
• KT-27916 Autocomplete val when auto-completing const

IDE. Debugger

Fixes

• KT-13268 Can't quick evaluate expression with Alt + Click without get operator
• KT-14075 Debugger: Property syntax accesses private Java field rather than synthetic property accessor
• KT-22366 Debugger doesn't stop on certain expressions
• KT-23585 Evaluation of a static interface method call fails
• KT-24343 Debugger, Step Over: IllegalStateException on two consecutive breakpoints when first breakpoint is on an inline function call
• KT-24959 Evaluating my breakpoint condition fails with exception
• KT-25667 Exception in logs from WeakBytecodeDebugInfoStorage (NoStrataPositionManagerHelper)
• KT-26795 Debugger crashes with NullPointerException when evaluating const value in companion object
• KT-26798 Check that step into works with overrides in inline classes
• KT-27414 Use "toString" to render values of inline classes in debugger
• KT-27462 Main without parameters just with inline fun call: Debug: last Step Over can't finish the process
• KT-28028 IDEA is unable to find sources during debugging
• KT-28342 Can't evaluate the synthetic 'field' variable
• KT-28487 ISE “resultValue is null: cannot find method generated_for_debugger_fun” on evaluating value of inline class

IDE. Decompiler

• KT-27284 Disable highlighting in decompiled Kotlin bytecode
• KT-27460 "Show Kotlin bytecode": "Internal error: null" for an inline extension property from a different file

IDE. Gradle

• KT-27265 Unresolved reference in IDE on calling JVM source set members of a multiplatform project with Android target from a plain Kotlin/JVM module

IDE. Gradle. Script

• KT-14862 IDEA links to class file instead of source in buildSrc (Gradle/Kotlin script)
• KT-17231 "Optimize Import" action not working for Gradle script kotlin.
• KT-21981 Optimize imports on the fly does not take implicit imports into account in .kts files
• KT-24623 Class defined in gradle buildSrc folder is marked as unused when it is actually used in Gradle Script Kotlin file
• KT-24705 Script reports are shown in the editor only after caret move
• KT-24706 Do not attach script reports if 'reload dependencies' isn't pressed
• KT-25354 Gradle Kotlin-DSL: Changes of buildSrc are not visible from other modules
• KT-25619 Intentions not working in buildSrc (Gradle)
• KT-27674 Highlighting is skipped in files from buildSrc folder of Gradle project

IDE. Hints

• KT-13118 Parameter info is not shown for Kotlin last-argument lambdas
• KT-25162 Parameter info for builder functions and lambdas
• KT-26689 Lambda return expression hint not shown when returning a lambda from inside a lambda
• KT-27802 The hint for the if-expression is duplicated inside each branch

IDE. Inspections and Intentions

New Features

• KT-2029 Add inspection for boolean literals passed without using named parameters feature
• KT-5071 Properly surround a function invocation in string template by curly braces
• KT-5187 Quick Fix to remove inline keyword on warning about performance benefits
• KT-6025 Auto-remove toString() call in "Convert concatenation to template"
• KT-9983 "'inline'' modifier is not allowed on virtual members." should have quickfix
• KT-12743 Add Intention to convert nullable var to non-nullable lateinit
• KT-15525 Inspection to warn on thread-blocking invocations from coroutines
• KT-17004 There is no suggestion to add property to supertype
• KT-19668 Inspection "Redundant else in if"
• KT-20273 Inspection to report a setter of a property with a backing field that doesn't update the backing field
• KT-20626 Inspection for '+= creates a new list under the hood'
• KT-23691 Warn about var properties with default setter and getter that doesn't reference backing field
• KT-24515 Intention to add an exception under the cursor to @Throws annotations
• KT-25171 Inspection: Change indexed access operator on maps to Map.getValue
• KT-25620 Inspection for functions returning Deferred
• KT-25718 Add intention to convert SAM lambda to anonymous object
• KT-26236 QuickFix for ASSIGN_OPERATOR_AMBIGUITY on mutable collection '+=', '-='
• KT-26511 Inspection (without highlighting by default) for unlabeled return inside lambda
• KT-26653 Intention to replace if-else with x?.let { ... } ?: ...
• KT-26724 Inspection with a warning for implementation by delegation to a var property
• KT-26836 Add quick fix for type mismatch between signed and unsigned types for constant literals
• KT-27007 Intention: add label to return if scope is visually ambiguous
• KT-27075 Add a quick fix/intention to create expect member for an added actual declaration
• KT-27445 Add quickfix for compiler warning "DEPRECATED_JAVA_ANNOTATION"
• KT-28118 Remove empty parentheses for annotation entries
• KT-28631 Suggest to remove single lambda argument if its name is equal to it
• KT-28696 Inspection: detect potentially ambiguous usage of coroutineContext
• KT-28699 Add "Convert to also" intention

Performance Improvements

• KT-26969 ConvertCallChainIntoSequence quick fix doesn't use sequences all the way

Fixes

• KT-4645 Unexpected behevior of "Replace 'if' with 'when'" intention when called on second or third 'if'
• KT-5088 "Add else branch" quickfix on when should not add braces
• KT-7555 Omit braces when converting 'this' in 'Convert concatenation to template'
• KT-8820 No "Change type" quick fix inside when
• KT-8875 "Remove explicit type" produce red code for extension lambda
• KT-12479 IDEA doesn't propose to replace all usages of deprecated annotation when it declared w/o parentheses
• KT-13311 IDE marks fun finalize() as unused and says that its effective visibility is private
• KT-14555 Strange 'iterate over Nothing' intention
• KT-15550 Intention "Add names to call arguments" isn't available if one argument is a generic function call
• KT-15835 "Leaking 'this' in constructor" for enum class
• KT-16338 "Leaking 'this' in constructor" of non-final class when using 'this::class.java'
• KT-20040 Kotlin Gradle script: unused import doesn't become grey
• KT-20725 Cannot persist excluded methods for inspection "Accessor call that can be replaced with property syntax"
• KT-21520 "Assignment should be lifted out of 'if'" false positive for arguments of different types
• KT-23134 "Remove single lambda parameter" quick fix applied to a lambda parameter with explicit type breaks ::invoke reference on lambda
• KT-23512 "Remove redundant receiver" quick fix makes generic function call incompilable when type could be inferred from removed receiver only
• KT-23639 False positive "Unused symbol" for sealed class type parameters
• KT-23693 Add missing actual members quick fix doesn't work if there is already same-named function with the same signature
• KT-23744 "Kotlin library and Gradle plugin versions are different" inspection false positive for non-JVM dependencies
• KT-24492 "Call on collection type may be reduced" does not change labels from mapNotNull to map
• KT-25536 Use non-const Kotlin 'val' usage in Java code isn't reported on case labels (& assignments)
• KT-25933 ReplaceCallWithBinaryOperator should not suggest to replace 'equals' involving floating-point types
• KT-25953 Meaningless auto properties for Atomic classes
• KT-25995 "Simplify comparision" should try to apply "Simplify if expression" when necessary
• KT-26051 False positive "Redundant visibility modifier" for overridden protected property setter made public
• KT-26337 Exception (resource not found) in quick-fix tests in AS32
• KT-26481 Flaky false positive "Receiver parameter is never used" for local extension function
• KT-26571 Too much highlighting from "convert call chain into sequence"
• KT-26650 False negative "Call chain on collection should be converted into 'Sequence'"" on class implementing Iterable
• KT-26662 Corner cases around 'this' inside "replace if with safe access"
• KT-26669 "Remove unnecessary parentheses" reports parens of function returned from extension function
• KT-26673 "Remove parameter" quick fix keeps unused type parameter referred in type constraint
• KT-26710 Should not report "implicit 'it' is shadowed" when outer it is not used
• KT-26839 Add braces to if statement produces code that is not formatted according to style
• KT-26902 Bad quickfix name for "Call on non-null type may be reduced"
• KT-27016 Replace 'if' with elvis operator w/ interface generates invalid code (breaks type inference)
• KT-27034 "Redundant SAM constructor" inspection shouldn't make all lambda gray (too much highlighting)
• KT-27061 False positive "Convert to secondary constructor" with delegation
• KT-27071 "Add non-null asserted (!!) call" places !! at wrong position with operator get (array indexing)
• KT-27093 Create actual class from expect class doesn't add all necessary imports
• KT-27104 False positive "Convert call chain into Sequence" with groupingBy
• KT-27116 "Object literal can be converted to lambda" produces code littered with "return@label"
• KT-27138 Change visibility intentions are suggested on properties marked with @JvmField
• KT-27139 Add getter intention is suggested for properties marked with @JvmField
• KT-27146 False positive "map.put() can be converted to assignment" on super keyword with LinkedHashMap inheritance
• KT-27156 Introduce backing property intention is suggested for property marked with @JvmField
• KT-27157 Convert property to function intention is suggested for property marked with @JvmField
• KT-27173 "Lift return out of ..." should work on any of targeted return keywords
• KT-27184 "Replace with safe call" is not suggested for nullable var property that is impossible to smart cast
• KT-27209 "Loop parameter 'it' is unused": unhelpful quickfix
• KT-27291 "Create" quick fix: "destination directory" field suggests same root and JVM roots for all platforms
• KT-27354 False positive "Make 'Foo' open" for data class inheritance
• KT-27408 "Add braces to 'if' statement" moves end-of-line comment inside an if branch
• KT-27486 ConvertCallChainIntoSequence quick fix doesn't convert 'unzip' into 'Sequence'
• KT-27539 False positive Redundant Companion reference when val in companion is effectively shadowed by inherited val
• KT-27584 False positive "Move lambda argument out of parentheses" when implementing interface by delegation
• KT-27590 No “Change parameter” quick fix for changing argument type from UInt to Int
• KT-27619 Inspection "Invalid property key" should check whether reference is soft or not
• KT-27664 Fix flaky problem in tests "Could not initialize class UnusedSymbolInspection"
• KT-27699 "Remove redundant spread operator" produces incorrect code
• KT-27708 IDE highlights internal constructors used only from Java as unused
• KT-27791 Don't suggest Implement as constructor parameters quick fix for actual class declaration
• KT-27861 RedundantCompanionReference false positive for nested class with name "Companion"
• KT-27906 SafeCastAndReturn is not reported on code block with unqualified return
• KT-27951 False declaration in actual list (same name but not really actual)
• KT-28047 False positive "Redundant lambda arrow" for lambda returned from when branch
• KT-28196 KotlinAddImportAction: AWT events are not allowed inside write action
• KT-28200 KNPE in TypeUtilsKt.getDataFlowAwareTypes
• KT-28268 Don't suggest "make abstract" quick fix for inline classes
• KT-28286 "Unused symbol" inspection: Interface is reported as "class"
• KT-28341 False positive "Introduce backing property" intention for const values
• KT-28381 Forbid "move property to constructor" for expect classes
• KT-28382 Forbid "introduce backing property" for expect classes
• KT-28383 Exception during "move to companion" for expect class member
• KT-28443 "Move out of companion object" intention is suggested for @JvmField property inside companion object of interface
• KT-28504 Redundant async inspection: support calls on explicitly given scope
• KT-28540 "Replace assert boolean with assert equality" inspection quickfix doesn't add import statement
• KT-28618 Kotlin: convert anonymous function to lambda expression failed if no space at start of lambda expression
• KT-28694 "Assign backing field" quick fix adds empty line before created assignment
• KT-28716 KotlinDefaultHighlightingSettingsProvider suppresses inspections in non-kotlin files
• KT-28744 val-keyword went missing from constructor of inline class after applying “Create actual class...” intention
• KT-28745 val-keyword went missing from constructor of inline class after applying “Create expected class in common module...” intention

IDE. KDoc

• KT-24788 Endless exceptions in offline inspections

IDE. Multiplatform

• KT-26518 Create actual ... quick fix doesn't add a primary constructor call for the actual secondary constructor
• KT-26893 Multiplatform projects fail to import into Android Studio 3.3, 3.4
• KT-26957 Merge expect gutter icon, when used for the same line
• KT-27295 MPP: Rebuild module / Recompile source does nothing for Native with Delegate to gradle = Yes
• KT-27296 MPP: Rebuild module / Recompile source does nothing for Common with Delegate to gradle = Yes
• KT-27335 New multiplatform wizard: mobile library is generated with failed test
• KT-27595 KNPE on attempt to generate equals(), hashCode(), toString() for expect class

IDE. Navigation

• KT-22637 Go to actual declarations for enum values should choose correct value if they are written in one line
• KT-27494 Create tooling tests for new-multiplatform
• KT-28206 Go to implementations on expect enum shows not only enum classes, but also all members
• KT-28398 Broken navigation to actual declaration of println() in non-gradle project

IDE. Project View

• KT-26210 IOE “Cannot create file” on creating new file with existing filename by pasting a code in Project view
• KT-27903 Can create file with empty name without any warning

IDE. REPL

• KT-29285 Starting REPL in Gradle project: Will compile into IDEA's out folder which then shadows Gradle's compile output

IDE. Refactorings

• KT-23603 Add the support for find usages/refactoring of the buildSrc sources in gradle kotlin DSL build scripts
• KT-26696 Copy, Move: "Destination directory" field does not allow to choose a path from non-JVM module
• KT-28408 "Extract interface" action should not show private properties
• KT-28476 Extract interface / super class on non-JVM class throws KNPE

IDE. Scratch

• KT-23523 Filter out fake gradle modules from checkbox in Scratch file panel
• KT-25032 Scratch: IDEA hangs/freezes on code that never returns (infinite loops)
• KT-26271 Scratches for Kotlin do not work when clicking "Run Scratch File" button
• KT-26332 Fix classpath intention in Kotlin scratch file in Java only project doesn't do anything
• KT-27628 Scratch blocks AWT Queue thread
• KT-28045 'Run kotlin scratch' is shown for jest tests

IDE. Script

• KT-24465 Provide a UI to manage script definitions
• KT-24466 Add warning when there are multiple script definitions for one script
• KT-25818 IDE Scripting Console files shouldn't have scratch panel
• KT-26331 Please extract ScriptDefinitionContributor/KotlinScriptDefinition from kotlin-plugin.jar to separate jar
• KT-27669 Consider moving expensive tasks out of the UI thread
• KT-27743 Do not start multiple background threads loading dependencies for different scripts
• KT-27817 Implement a lightweight EP in a separate public jar for supplying script definitions to IDEA
• KT-27960 Add capability to import one Script to another
• KT-28046 "Reload script dependencies on file change" option is missing after project restart

IDE. Tests Support

• KT-27977 Missing 'run' gutter on a test method of an abstract class
• KT-28080 Wrong run configuration created from context for test method in abstract class

JS. Tools

• KT-27361 Support NamedConstructor in idl2k
• KT-28786 Float values initialized incorrectly while translating from IDL
• KT-28821 Kotlin/JS missing ClipboardEvent definitions
• KT-28864 Better support for TrackEvent, MediaStreamTrackEvent and RTCTrackEvent in idl

JavaScript

• KT-27611 Calling a suspending function of a JS library causes "Uncaught ReferenceError: CoroutineImpl is not defined"
• KT-28207 Finally block loops forever for specific code shape
• KT-28215 JS: inline suspend function not usable in non-inlined form
• KT-29003 KotlinJS: Size of String in stdlib is limited if the the Constructor String(chars: CharArray) gets used

Libraries

New Features

• KT-18398 Provide a way for libraries to avoid mixing Kotlin 1.0 and 1.1 dependencies in end user projects
• KT-27919 Publish modularized artifacts under 'modular' classifier

Performance Improvements

• KT-27251 Do not use Stack in FileTreeWalk iterator implementation

Fixes

• KT-12473 KotlinJS - comparator returning 0 changes order
• KT-20743 Use strongly typed events in Kotlin2js DOM API
• KT-20865 Retrieving groups by name is not supported on Java 9 even with kotlin-stdlib-jre8 in the classpath
• KT-23932 add "PointerEvent" for kotlin-stdlib-js
• KT-24336 Kotlin/JS missing SVGMaskElement interface
• KT-25371 Support unsigned integers in kotlinx-metadata-jvm
• KT-27629 kotlin.test BeforeTest/AfterTest annotation mapping for TestNG
• KT-28091 Provide correct AbstractMutableCollections declarations in stdlib-common
• KT-28251 Stdlib: Deprecated ReplaceWith kotlin.math.log replacement instead of kotlin.math.ln
• KT-28488 Add clarification for COROUTINES_SUSPENDED documentation
• KT-28572 readLine() stumbles at surrogate pairs
• KT-29187 JS toTypedArray returns array of invalid type for LongArray and BooleanArray

Reflection

• KT-26765 Support calling constructors with inline classes in the signature in reflection
• KT-27585 Flaky IllegalPropertyDelegateAccessException: Cannot obtain the delegate of a non-accessible property. Use "isAccessible = true" to make the property accessible
• KT-27598 "KotlinReflectionInternalError" when using callBy on constructor that has inline class parameters
• KT-27913 ReflectJvmMapping.getKotlinFunction(ctor) works incorrectly with types containing variables of inline class

Tools. CLI

• KT-27226 Argfiles: An empty argument in quotes with a whitespace or a newline after it interrupts further reading of arguments
• KT-27430 [Experimental API] Report warning instead of error if non-marker is used in -Xuse-experimental/-Xexperimental
• KT-27626 -Xmodule-path does not work in Gradle project with Java 9
• KT-27709 Using an experimental API that does not exist should warn, not error
• KT-27775 Re-enable directories passed as in -Xbuild-file
• KT-27930 Do not use toURI in ModuleVisibilityUtilsKt.isContainedByCompiledPartOfOurModule if possible
• KT-28180 Backslash-separated file paths in argfiles do not work on Windows
• KT-28974 Serialization bug in CommonToolArguments, affecting MPP project data serialization

Tools. Compiler Plugins

• KT-24997 Pass arguments to Kapt in human-readable format
• KT-24998 Introduce separate command line tool specifically for Kapt in order to improve UX
• KT-25128 ABI jar generation in the CLI compiler for Bazel like build systems.

Tools. Gradle

New Features

• KT-26963 Warn user that a custom platform-agnostic source set wouldn't be included into build unless it is required for other source sets
• KT-27394 Add kotlinOptions in compilations of the new MPP model
• KT-27535 Implement AARs building and publishing in new MPP
• KT-27685 In new MPP, expose a compilation's default source set via DSL
• KT-28155 Add ability to run tasks in parallel within project
• KT-28842 Enable JS IC by default

Performance Improvements

• KT-24530 Enable compile avoidance for kaptKotlin tasks
• KT-28037 In-process Kotlin compiler leaks thread local values

Fixes

• KT-26065 Kotlin Gradle plugin resolves dependencies at configuration time
• KT-26389 Support Gradle Kotlin DSL in projects with the kotlin-multiplatform plugin
• KT-26663 Gradle dependency DSL features missing for the new MPP dependencies
• KT-26808 Deprecation Warning Gradle 5 - "DefaultSourceDirectorySet constructor has been deprecated"
• KT-26978 Gradle verification fails on DiscoverScriptExtensionsTask
• KT-27682 Kotlin MPP DSL: a target is missing the attributes { ... } function, only the attributes property is available.
• KT-27950 Gradle 5.0-rc1: "Compilation with Kotlin compile daemon was not successful"
• KT-28355 Gradle Kotlin plugin publishes "api" dependencies with runtime scope
• KT-28363 Enable resources processing for Kotlin/JS target in multiplatform projects
• KT-28469 Gradle Plugin: Task DiscoverScriptExtensionsTask is never up-to-date
• KT-28482 Always rewrite the MPP dependencies in POMs, even when publishing with Gradle metadata
• KT-28520 MPP plugin can't be applied altogether with the "maven-publish" plugin in a Gradle 5 build
• KT-28635 fromPreset() in MPP Gradle plugin DSL is hard to use from Gradle Kotlin DSL scripts
• KT-28749 Expose allKotlinSourceSets in KotlinCompilation
• KT-28795 The localToProject attribute is not properly disambiguated with Gradle 4.10.2+
• KT-28836 Kotlin compiler logs from Gradle Kotlin Plugin aren't captured by Gradle
• KT-29058 Gradle Plugin: Multiplatform project with maven-publish plugin does not use project group for "metadata" artifact POM

Tools. J2K

• KT-26073 Irrelevant "create extra commit with java->kt rename"

Tools. JPS

• KT-26980 JPS Native warning is duplicated for test source sets
• KT-27285 MPP: invalid common -> platform dependency: JPS fails with Throwable "Cannot initialize Kotlin context: Cyclically dependent modules" at KotlinChunk.()
• KT-27622 JPS, JS: Resources marked as "kotlin-resource" are not copied to the out folder in a Kotlin-js project
• KT-28095 JPS: support -Xcommon-sources for multiplatform projects (JS)
• KT-28316 Report Native is not yet supported in IDEA internal build system on JPS build once per project/multiplatform module
• KT-28527 JPS: Serialization plugin not loaded in ktor
• KT-28900 With "Keep compiler process alive between invocations = No" (disabled daemon) JPS rebuild fails with SCE: "Provider AndroidCommandLineProcessor not a subtype" at PluginCliParser.processPluginOptions()

Tools. Scripts

• KT-27382 Embeddable version of scripting support (KEEP 75)
• KT-27497 kotlin script - No class roots are found in the JDK path
• KT-29293 Script compilation - standard libs are not added to the dependencies
• KT-29301 Some ivy resolvers are proguarded out of the kotlin-main-kts
• KT-29319 scripts default jvmTarget causes inlining problems - default should be 1.8

Tools. kapt

New Features

• KT-28024 Kapt: Add option for printing timings for individual annotation processors
• KT-28025 Detect memory leaks in annotation processors

Performance Improvements

• KT-28852 Cache classloaders for tools.jar and kapt in Gradle workers

Fixes

• KT-24368 Kapt: Do not include compile classpath entries in the annotation processing classpath
• KT-25756 Investigate file descriptors leaks in kapt
• KT-26145 Using kapt without the kotlin-kapt plugin should throw a build error
• KT-26304 Build fails with "cannot find symbol" using gRPC with dagger; stub compilation fails to find classes generated by kapt
• KT-26725 Kapt does not handle androidx.annotation.RecentlyNullable correctly
• KT-26817 kapt 1.2.60+ ignores .java files that are symlinks
• KT-27126 kapt: class implementing List generates bad stub
• KT-27188 kapt Gradle plugin fails in Java 10+ ("Cannot find tools.jar")
• KT-27334 [Kapt] Stub generator uses constant value in method annotation instead of constant name.
• KT-27404 Kapt does not call annotation processors on custom (e.g., androidTest) source sets if all dependencies are inherited from the main kapt configuration
• KT-27487 Previous value is passed to annotation parameter using annotation processing
• KT-27711 kapt: ArrayIndexOutOfBoundsException: 0
• KT-27910 Kapt lazy stub without explicit type that initializes an object expression breaks stubbing

1.3.11

Compiler

• KT-28097 AbstractMethodError for @JvmSuppressWildcards annotation used with coroutines
• KT-28225 Report a warning when comparing incompatible enums

IDE. Gradle

• KT-28389 MPP IDE import does not recognize a dependency from a subproject to the root project

IDE. Inspections and Intentions

• KT-28445 "Redundant async" inspection does not work with release coroutines

IDE. Multiplatform

• KT-27632 MPP IDE commonMain cannot see other commonMain types transitively which are exposed through a middle multiplatform module

JavaScript

• KT-27946 Late initialization based on contracts breaks Kotlin/JS in 1.3.0

Tools. Gradle

• KT-27500 MPP: Native: .module dependency is reported as error in the IDE after import

1.3.10

Compiler

• KT-27758 Kotlin 1.3 breaks compilation of calling of function named 'contract' with block as a last parameter
• KT-27895 Kotlin 1.3.0 broken runtime annotation issue

IDE

• KT-27230 Freeze on paste
• KT-27907 Exception on processing auto-generated classes from AS

IDE. Debugger

• KT-27540 2018.3 and 2019.1 Debugger: Evaluating anything fails with KNPE in LabelNormalizationMethodTransformer
• KT-27833 Evaluate exception in 183/191 with asm-7.0-beta1/'asm-7.0'
• KT-27965 Sequence debugger does not work in Android Studio
• KT-27980 Kotlin sequence debugger throws IDE exception in IDEA 183

IDE. Gradle

• KT-27265 Unresolved reference in IDE on calling JVM source set members of a multiplatform project with Android target from a plain Kotlin/JVM module
• KT-27849 IntelliJ: Wrong scope of JVM platform MPP dependency

IDE. Inspections and Intentions

• KT-26481 Flaky false positive "Receiver parameter is never used" for local extension function
• KT-27357 Function with inline class type value parameters is marked as unused by IDE
• KT-27434 False positive "Unused symbol" inspection for functions and secondary constructors of inline classes
• KT-27945 Quick-fix whitespace bug in KtPrimaryConstructor.addAnnotationEntry()

IDE. Scratch

• KT-27746 Scratch: "Cannot pop operand off an empty stack" in a new scratch file

IDE. Tests Support

• KT-27371 Common tests can not be launched from gutter in MPP Android/iOS project

Reflection

• KT-27878 Spring: "AssertionError: Non-primitive type name passed: void"

Tools. Gradle

• KT-27160 Kotlin Gradle plugin 1.3 resolves script configurations during project evaluation
• KT-27803 CInterop input configuration has 'java-api' as a Usage attribute value in new MPP
• KT-27984 Kotlin Gradle Plugin: Circular dependency

Tools. JPS

• KT-26489 JPS: support -Xcommon-sources for multiplatform projects (JVM)
• KT-27037 Incremental compilation failed after update to 1.3.0-rc-60
• KT-27792 Incremental compilation failed with NullPointerException in KotlinCompileContext.markChunkForRebuildBeforeBuild

Tools. kapt

• KT-27126 kapt: class implementing List generates bad stub

1.3.0

IDE

• KT-25429 Replace update channel in IDE plugin
• KT-27793 kotlinx.android.synthetic is unresolved on project reopening

IDE. Inspections and Intentions

• KT-27619 Inspection "Invalid property key" should check whether reference is soft or not

1.3-RC4

Compiler

Fixes

• KT-26858 Inline class access to private companion object value fails with NSME
• KT-27030 Non-capturing lambda in inline class members fails with internal error (NPE in genClosure)
• KT-27031 Inline extension lambda in inline class fun fails with internal error (wrong bytecode generated)
• KT-27033 Anonymous object in inline class fun fails with internal error (NPE in generateObjectLiteral/.../writeOuterClassAndEnclosingMethod)
• KT-27096 AnalyzerException: Error at instruction 71: Expected I, but found . when function takes unsigned type with default value and returns nullable inline class
• KT-27130 Suspension point is inside a critical section regression
• KT-27132 CCE when inline class is boxed
• KT-27258 Report diagnostic for suspension point inside critical section for crossinline suspend lambdas
• KT-27393 Incorrect inline class type coercion in '==' with generic call
• KT-27484 Suspension points in synchronized blocks checker crashes
• KT-27502 Boxed inline class backed by Any is not unboxed before method invocation
• KT-27526 Functional type with inline class argument and suspend modified expects unboxed value while it is boxed
• KT-27615 Double wrap when inline class is printing if it was obtained from list/map
• KT-27620 Report error when using value of kotlin.Result type as an extension receiver with safe call

IDE

• KT-27298 Deadlock on project open
• KT-27329 Migration doesn't work for kts projects when versions are stored in kt files inside buildSrc directory
• KT-27355 Assertion error from light classes (expected callable member was null) for type alias in JvmMultifileClass annotated file
• KT-27456 New Project wizard: Kotlin (Multiplatform Library): consider generating source files with different names to work around KT-21186
• KT-27473 "Gradle sync failed: Already disposed: Module: 'moduleName-app_commonMain'" on reimport of a multiplatform project with Android target between different IDEs
• KT-27485 Gradle import failed with "Already disposed" error on reopening of a multiplatform project with Android target
• KT-27572 ISE: "Could not generate LightClass for entry declared in " at CompilationErrorHandler.lambda$static$0()

IDE. Android

• KT-26975 CNFDE KotlinAndroidGradleOrderEnumerationHandler$FactoryImpl in AS 3.3 with Kotlin 1.3.0-rc-51
• KT-27451 main target platform selection is not working in a multiplatform project with Android and JVM targets in Android Studio

IDE. Gradle

• KT-27365 Dependencies between Java project and MPP one are not respected by import
• KT-27643 First import of Android project miss skips some dependencies in IDEA 183

IDE. Multiplatform

• KT-27356 Use kotlin-stdlib instead of kotlin-stdlib-jdk8 in Android-related MPP templates

IDE. Scratch

• KT-24180 Add key shortcut and action for running a kotlin scratch file (green arrow button in the editor tool-buttons)

JavaScript

• KT-26320 JS: forEach + firstOrNull + when combination does not compile correctly
• KT-26787 Incorrect JS code translation: when statement inside for loop breaks out of the loop

Libraries

• KT-27508 Rename Random companion object to Default

Tools. Gradle

• KT-26758 Unify Gradle DSL for compiler flags in new multiplatform model
• KT-26840 Support -Xuse-experimental in the new MPP language settings DSL
• KT-27278 New MPP plugin is binary-incompatible with Gradle 5.0
• KT-27499 In new MPP, support compiler plugins (subplugins) options import into the IDE for each source set

Tools. JPS

• KT-27044 JPS rebuilds twice when dependency is updated

Tools. kapt

• KT-27119 kapt: val without explicit type that is assigned an object expression implementing a generic interface breaks compilation

1.3-RC3

Compiler

• KT-26300 Smartcasts don't work if pass same fields of instances of the same class in contract function with conjunction not-null condition
• KT-27221 Incorrect smart cast for sealed classes with a multilevel hierarchy

IDE

• KT-27163 Replace coroutine migration dialog with notification
• KT-27200 New MPP wizard: mobile library
• KT-27201 MPP library wizards: provide maven publishing
• KT-27214 Android test source directories are not recognised in IDE
• KT-27351 Better fix for coroutines outdated versions in Gradle and Maven

IDE. Android

• KT-27331 Missing dependencies in Android project depending on MPP project

IDE. Inspections and Intentions

• KT-27164 Create a quick fix for replacing obsolete coroutines in the whole project

IDE. Multiplatform

• KT-27029 Multiplatform project is unloaded if Gradle refresh/reimport is failed

Libraries

• KT-22869 Improve docs of assertFailsWith function

Tools. CLI

• KT-27218 From @ not all whitespace characters are parsed correctly

Tools. Compiler Plugins

• KT-27166 Disable kotlinx.serialization plugin in IDE by default

1.3-RC2

Android

• KT-27006 Android extensions are not recognised by IDE in multiplatform projects
• KT-27008 Compiler plugins are not working in multiplatform projects with Android target

Compiler

• KT-24415 Remove bridge flag from default methods
• KT-24510 Coroutines make Android's D8 angry
• KT-25545 Import statement of @Experimental element causes compiler warning/error, but annotation can't be used to avoid it
• KT-26382 Wrong smartcast if used safe call + returnsNull effect
• KT-26640 Check inference behaviour for coroutines that it's possible to improve it in compatible way
• KT-26804 Make sure @PublishedAPI is retained in binary representation of a primary constructor of an inline class
• KT-27079 Allow using extensions without opt-in in builder-inference if they add only trivial constraints
• KT-27084 smart cast to non-nullable regression from 1.2.70 to 1.3.0-rc-57
• KT-27117 IllegalAccessError when using private Companion field inside inline lambda
• KT-27121 Illegal field modifiers in class for a field of an interface companion
• KT-27161 Getting "Backend Internal error: Descriptor can be left only if it is last" using new when syntax

IDE

New Features

• KT-26313 Support ResolveScopeEnlarger in Kotlin IDE
• KT-26786 MPP builders: create not only build.gradle but some example files also

Fixes

• KT-13948 IDE plugins: improve description
• KT-14981 IDE should accept only its variant of plugin, as possible
• KT-23864 Copyright message is duplicated in kotlin file in root package after updating copyright
• KT-24907 please remove usages of com.intellij.openapi.vfs.StandardFileSystems#getJarRootForLocalFile deprecated long ago
• KT-25449 Mark classes loaded by custom class loader with @DynamicallyLoaded annotation for the sake of better static analysis
• KT-25463 API version in Kotlin facets isn't automatically set to 1.3 when importing a project in Gradle
• KT-25952 New Project Wizard: generate MPP in a new way
• KT-26501 Fix "IDEA internal actions" group text to "Kotlin internal actions"
• KT-26695 IDEA takes 1.3-M2-release plugin as more recent than any 1.3.0-dev-nnn or 1.3.0-rc-nnn plugin
• KT-26763 Compiler options are not imported into Kotlin facet for a Native module
• KT-26774 Create IDE setting for experimental inline classes
• KT-26889 Don't show migration dialog if no actual migrations are available
• KT-26933 No jre -> jdk fix in Gradle file if version isn't written explicitly
• KT-26937 MPP: Gradle import: adding target definition after importing its sourceSet does not correct the module SDK
• KT-26953 New MPP project wrong formatting
• KT-27021 Wrong JVM target if no Kotlin facet is specified
• KT-27100 Version migration dialog is not shown in Studio 3.3
• KT-27145 Gradle import: JVM modules gets no JDK in dependencies
• KT-27177 MPP wizards: use Gradle 4.7 only
• KT-27193 Gradle import: with Kotlin configured Android module gets non-Android JDK

IDE. Code Style, Formatting

• KT-27027 Formatter puts when subject variable on a new line

IDE. Completion

• KT-25313 Autocomplete generates incorrect code on fields overriding by expected class

IDE. Hints

• KT-26057 (arguably) redundant hint shown for enum value when qualified with enum class

IDE. Inspections and Intentions

• KT-14929 Deprecated ReplaceWith for type aliases
• KT-25251 Create intention for migration coroutines from experimental to released state
• KT-26027 False positive from "Nested lambda has shadowed implicit parameter" inspection for SAM conversion
• KT-26268 Inspection "Nested lambda has shadowed implicit parameter" should only warn if parameter is used
• KT-26775 Create quick fix that enable or disable experimental inline classes in project
• KT-26991 ReplaceWith for object doesn't work anymore

IDE. Multiplatform

• KT-24060 main function in common part of MPP project: allow user to choose between platform modules to run it from
• KT-26647 Warn user about incompatible/ignored Native targets on Gradle build of a project with the new multiplatform model
• KT-26690 IDE significantly slows down having Native target in a multiplatform project
• KT-26872 MPP: JS: Node.js run configuration is created with not existing JavaScript file
• KT-26942 MPP IDE: JS test configuration removes gutter actions from common module
• KT-27010 New mpp: missing run gutters in common code when relevant platform roots do not exist
• KT-27133 IDE requires actual implementations to be also present in test source sets
• KT-27172 ISE: "The provided plugin org.jetbrains.kotlin.android.synthetic.AndroidComponentRegistrar is not compatible with this version of compiler" on build of a multiplatform project with iOS and Android

IDE. Navigation

• KT-25055 Android modules are named same as JVM ones in actual gutter tooltip
• KT-26004 IDE: Unable to navigate to common library declaration from platform code (not necessarily in an MPP project)

IDE. Tests Support

• KT-23884 Running common module test in IDE results in "no JDK specified" error
• KT-23911 Cannot jump to source from common test function in Run tool window

Libraries

• KT-18608 Result type for Kotlin (aka Try monad)
• KT-26666 Add documentation for contract DSL

Reflection

• KT-24170 Instance parameter of inherited declaration should have the type of subclass, not the base class

Tools. Compiler Plugins

• KT-24444 Do not store proxy objects from Gradle importer in the project model

Tools. Gradle

• KT-25200 Report a warning when building multiplatform code in Gradle
• KT-26390 Implement source JARs building and publishing in new MPP
• KT-26771 New Native MPP Gradle plugin creates publications only for host system
• KT-26834 Gradle compilation of multimodule project fails with Could not resolve all files for configuration ':example-v8:apiDependenciesMetadata'
• KT-27111 org.jetbrains.kotlin.platform.type is not set for some Gradle configurations in multiplatform plugin
• KT-27196 Support Kotlin/JS DCE in new MPP

Tools. Scripts

• KT-26828 main-kts test fails with "Error processing script definition class"
• KT-27015 Scripting sample from 1.3 RC blogpost does not work
• KT-27050 1.3-RC Scripting @file:Repository and @file:DependsOn annotations are not repeatable

1.3-RC

Compiler

New Features

• KT-17679 Support suspend fun main in JVM
• KT-24854 Support suspend function types for arities bigger than 22
• KT-26574 Support main entry-point without arguments in frontend, IDE and JVM

Performance Improvements

• KT-26490 Change boxing technique: instead of calling valueOf, allocate new wrapper type

Fixes

• KT-22069 Array class literals are always loaded as Array<*> from deserialized annotations
• KT-22892 Call of invoke function with lambda parameter on a field named suspend should be reported
• KT-24708 Incorrect WhenMappings code generated in case of mixed enum classes in when conditions
• KT-24853 Forbid KSuspendFunctionN and SuspendFunctionN to be used as supertypes
• KT-24866 Review support of all operators for suspend function and forbid all unsupported
• KT-25461 Mangle names of functions that have top-level inline class types in their signatures to allow non-trivial non-public constructors
• KT-25855 Load Java declarations which reference kotlin.jvm.functions.FunctionN as Deprecated with level ERROR
• KT-26071 Postpone conversions from signed constant literals to unsigned ones
• KT-26141 actual typealias for expect sealed class results in error "This type is sealed, so it can be inherited by only its own nested classes or objects"
• KT-26200 Forbid suspend functions annotated with @kotlin.test.Test
• KT-26219 Result of unsigned predecrement/preincrement is not boxed as expected
• KT-26223 Inline lambda arguments of inline class types are passed incorrectly
• KT-26291 Boxed/primitive types clash when overriding Kotlin from Java with common generic supertype with inline class type argument
• KT-26403 Add -impl suffix to box/unbox methods and make them synthetic
• KT-26404 Mangling: setters for properties of inline class types
• KT-26409 implies in CallsInPlace effect isn't supported
• KT-26437 Generate constructors containing inline classes as parameter types as private with synthetic accessors
• KT-26449 Prohibit equals-like and hashCode-like declarations inside inline classes
• KT-26451 Generate static methods with equals/hashCode implementations
• KT-26452 Get rid of $Erased nested class in ABI of inline classes
• KT-26453 Generate all static methods in inline classes with “-impl” suffix
• KT-26454 Prohibit @JvmName on functions that are assumed to be mangled
• KT-26468 Inline class ABI: Constructor invocation is not represented in bytecode
• KT-26480 Report error from compiler when suspension point is located between corresponding MONITORENTER/MONITOREXIT
• KT-26538 Prepare kotlin.Result to publication in 1.3
• KT-26558 Inline Classes: IllegalStateException when invoking secondary constructor for a primitive underlying type
• KT-26570 Inline classes ABI
• KT-26573 Reserve box, unbox, equals and hashCode methods inside inline class for future releases
• KT-26575 Reserve bodies of secondary constructors for inline classes
• KT-26576 Generate stubs for box/unbox/equals/hashCode inside inline classes
• KT-26580 Add version to kotlin.coroutines.jvm.internal.DebugMetadata
• KT-26659 Prohibit using kotlin.Result as a return type and with special operators
• KT-26687 Stdlib contracts have no effect in common code
• KT-26707 companion val of primitive type is not treated as compile time constant
• KT-26720 Write language version requirement on inline classes and on declarations that use inline classes
• KT-26859 Inline class misses unboxing when using indexer into an ArrayList
• KT-26936 Report warning instead of error on usages of Experimental/UseExperimental
• KT-26958 Introduce builder-inference with an explicit opt-in for it

IDE

New Features

• KT-26525 "Move Element Right/Left": Support type parameters in where clause (multiple type constraints)

Fixes

• KT-22491 MPP new project/new module templates are not convenient
• KT-26428 Kotlin Migration in AS32 / AS33 fails to complete after "Indexing paused due to batch update" event
• KT-26484 Do not show -Xmulti-platform option in facets for common modules of multiplatform projects with the new model
• KT-26584 @Language prefix and suffix are ignored for function arguments
• KT-26679 Coroutine migrator should rename buildSequence/buildIterator to their new names
• KT-26732 Kotlin language version from IDEA settings is not taken into account when working with Java code
• KT-26770 Android module in a multiplatform project isn't recognised as a multiplatform module
• KT-26794 Bad version detection during migration in Android Studio 3.2
• KT-26823 Fix deadlock in databinding with AndroidX which led to Android Studio hanging
• KT-26827 ISE “Error type encountered: [ERROR : UInt] (UnresolvedType)” for data inline class wrapped unsigned type
• KT-26829 ISE “Error type encountered: [ERROR : UInt] (UnresolvedType)” for using as a field inline class wrapped unsigned type
• KT-26843 LazyLightClassMemberMatchingError$NoMatch: Couldn't match ClsMethodImpl:getX MemberIndex(index=1) (with 0 parameters) on inline class overriding inherited interface method defined in different files
• KT-26895 Exception while building light class for @Serializable annotated class

IDE. Android

• KT-26169 Android extensions are not recognised by IDE in multiplatform projects
• KT-26813 Multiplatform projects without Android target are not imported properly into Android Studio

IDE. Code Style, Formatting

• KT-22322 Incorrect indent after pressing Enter after annotation entry
• KT-26377 Formatter does not add blank line between annotation and type alias (or secondary constructor)

IDE. Decompiler

• KT-25853 IDEA hangs when Kotlin bytecode tool window open while editing a class with secondary constructor

IDE. Gradle

• KT-26634 Do not generate module for metadataMain compilation on new MPP import
• KT-26675 Gradle: Dependency on multiple files gets duplicated on import

IDE. Inspections and Intentions

New Features

• KT-17687 Quickfix for "Interface doesn't have constructors" to convert to anonymous object
• KT-24728 Add quickfix to remove single explicit & unused lambda parameter
• KT-25533 An intention to create actual implementations for expect members annotated with @OptionalExpectation
• KT-25621 Inspections for functions returning SuccessOrFailure
• KT-25969 Add an inspection for 'flatMap { it }'
• KT-26230 Inspection: replace safe cast (as?) with if (instance check + early return)

Fixes

• KT-13343 Remove explicit type specification breaks code if initializer omits generics
• KT-19586 Create actual implementation does nothing when platform module has no source directories.
• KT-22361 Multiplatform: "Generate equals() and hashCode()" intention generates JVM specific code for arrays in common module
• KT-22552 SimplifiableCallChain should keep formatting and comments
• KT-24129 Multiplatform quick fix add implementation suggests generated source location
• KT-24405 False "redundant overriding method" for abstract / default interface method combination
• KT-24978 Do not highlight foldable if-then for is checks
• KT-25228 "Create function" from a protected inline method should not produce a private method
• KT-25525 @Experimental-related quick fixes are not suggested for usages in top-level property
• KT-25526 @Experimental-related quick fixes are not suggested for usages in type alias
• KT-25548 @Experimental API usage: "Add annotation" quick fix incorrectly modifies primary constructor
• KT-25609 "Unused symbol" inspection reports annotation used only in -Xexperimental/-Xuse-experimental settings
• KT-25711 "Deferred result is never used" inspection: remove experimental package (or whole FQN) from description
• KT-25712 "Redundant 'async' call" inspection quick fix action label looks too long
• KT-25883 False "redundant override" reported on boxed parameters
• KT-25886 False positive "Replace 'if' with elvis operator" for nullable type
• KT-25968 False positive "Remove redundant backticks" with keyword yield
• KT-26009 "Convert to 'also'" intention adds an extra it expression
• KT-26015 Intention to move property to constructor adds @field: qualifier to annotations
• KT-26179 False negative "Boolean expression that can be simplified" for !true
• KT-26181 Inspection for unused Deferred result: report for all functions by default
• KT-26185 False positive "redundant semicolon" with if-else
• KT-26187 "Cascade if can be replaced with when" loses lambda curly braces
• KT-26289 Redundant let with call expression: don't report for long call chains
• KT-26306 "Add annotation target" quick fix adds EXPRESSION annotation, but not SOURCE retention
• KT-26343 "Replace 'if' expression with elvis expression" produces wrong code in extension function with not null type parameter
• KT-26353 "Make variable immutable" is a bad name for a quickfix that changes 'var' to 'val'
• KT-26472 "Maven dependency is incompatible with Kotlin 1.3+ and should be updated" inspection is not included into Kotlin Migration
• KT-26492 "Make private" on annotated annotation produces nasty new line
• KT-26599 "Foldable if-then" inspection marks if statements that cannot be folded using ?. operator
• KT-26674 Move lambda out of parentheses is not proposed for suspend lambda
• KT-26676 ReplaceWith always puts suspend lambda in parentheses
• KT-26810 "Incompatible kotlinx.coroutines dependency" inspections report library built for 1.3-RC with 1.3-RC plugin

IDE. Multiplatform

• KT-20368 Unresolved reference to declarations from kotlin.reflect in common code in multi-platform project: no "Add import" quick-fix
• KT-26356 New MPP doesn't work with Android projects
• KT-26369 Library dependencies don't transitively pass for custom source sets at new MPP import to IDE
• KT-26414 Remove old multiplatform modules templates from New Project/New Module wizard
• KT-26517 Create actual ... generates default constructor parameter values
• KT-26585 Stdlib annotations annotated with @OptionalExpectation are reported with false positive error in common module

IDE. Navigation

• KT-18490 Multiplatform project: Set text cursor correctly to file with header on navigation from impl side

IDE. Refactorings

• KT-17124 Change signature refactoring dialog unescapes escaped parameter names
• KT-25454 Extract function: make default visibility private
• KT-26533 Move refactoring on interface shows it as "abstract interface" in the dialog

IDE. Tests Support

• KT-26793 Left gutter run icon does not appear for JS tests in old MPP

IDE. Ultimate

• KT-19309 Spring JPA Repository IntelliJ tooling with Kotlin

JavaScript

• KT-26466 Uncaught ReferenceError: println is not defined
• KT-26572 Support suspend fun main in JS
• KT-26628 Support main entry-point without arguments in JS

Libraries

New Features

• KT-25039 Any?.hashCode() extension
• KT-26359 Use JvmName on parameters of kotlin.Metadata to improve the public API
• KT-26398 Coroutine context shall perform structural equality comparison on keys
• KT-26598 Introduce ConcurrentModificationException actual typealias in the JVM library

Performance Improvements

• KT-18483 Check to contains value in range can be dramatically slow

Fixes

• KT-17716 JS: Some kotlin.js.Math methods break Integer type safety
• KT-21703 Review deprecations in stdlib for 1.3
• KT-21784 Deprecate and remove org.jetbrains.annotations from kotlin-stdlib in compiler distribution
• KT-22423 Deprecate mixed integer/floating point overloads of ClosedRange.contains operator
• KT-25217 Raise deprecation level for mod operators to ERROR
• KT-25935 Move kotlin.reflect interfaces to kotlin-stdlib-common
• KT-26358 Rebuild anko for new coroutines API
• KT-26388 Specialize contentDeepEquals/HashCode/ToString for arrays of unsigned types
• KT-26523 EXACTLY_ONCE contract in runCatching doesn't consider lambda exceptions are caught
• KT-26591 Add primitive boxing functions to stdlib
• KT-26594 Change signed-to-unsigned widening conversions to sign extending
• KT-26595 Deprecate common 'synchronized(Any) { }' function
• KT-26596 Rename Random.nextInt/Long/Double parameters
• KT-26678 Rename buildSequence/buildIterator to sequence/iterator
• KT-26929 Kotlin Reflect and Proguard: can’t find referenced class kotlin.annotations.jvm.ReadOnly/Mutable

Reflection

• KT-25499 Use-site targeted annotations on property accessors are not visible in Kotlin reflection if there's also an annotation on the property
• KT-25500 Annotations on parameter setter are not visible through reflection
• KT-25664 Inline classes don't work properly with reflection
• KT-26293 Incorrect javaType for suspend function's returnType

Tools. CLI

• KT-24613 Support argfiles in kotlinc with "@argfile"
• KT-25862 Release '-Xprogressive' as '-progressive'
• KT-26122 Support single quotation marks in argfiles

Tools. Gradle

• KT-25680 Gradle plugin: version with non-experimental coroutines and no related settings still runs compiler with -Xcoroutines option
• KT-26253 New MPP model shouldn't generate metadataMain and metadataTest source sets on IDE import
• KT-26383 Common modules dependencies are not mapped at import of a composite multiplatform project with project dependencies into IDE
• KT-26515 Support -Xcommon-sources in new MPP
• KT-26641 In new MPP, Gradle task for building classes has a name unexpected for GradleProjectTaskRunner
• KT-26784 Support non-kts scripts discovery and compilation in gradle

Tools. JPS

• KT-26072 MPP compilation issue
• KT-26254 JPS build for new MPP model doesn't work: kotlinFacet?.settings?.sourceSetNames is empty

Tools. kapt

• KT-25374 Kapt: Build fails with Unresolved local class
• KT-26540 kapt3 fails to handle to-be-generated superclasses

1.3-M2

Compiler

New Features

• KT-6592 Support local variable initialization in lambda arguments to some functions
• KT-19323 Allow generic type parameter to have mixed constraints for @InlineOnly functions
• KT-24857 Support compatibility wrappers for coroutines in compiler
• KT-25320 Support limited conversions for constants to simplify interop for Kotlin/Native
• KT-25372 Support JvmName on annotation property getters
• KT-25495 Release contract DSL as experimental
• KT-25557 Metadata that maps coroutine label to the file name and line number
• KT-25559 Metadata that maps coroutine spilled state to local variables
• KT-25655 Safe or non-null calls required on x following check(x != null)
• KT-25972 Support reading binary metadata of the next major release

Performance Improvements

• KT-24657 Compiler performance issues with big files
• KT-26243 Avoid redundant "specialized" method for suspend lambdas.

Fixes

• KT-19628 Unresolved reference not reported on data class constructor @get annotation
• KT-20830 Nulls can propagate through "enhanced nullability" types on module boundaries
• KT-21240 Remove suspendCoroutineOrReturn intrinsic from compiler
• KT-22379 Condition of while-loop with break can produce unsound smartcast
• KT-23438 Back-end (JVM) Internal error: Failed to generate function suspendCoroutineOrReturn
• KT-23819 Inline classes: mapping of fully generic classes
• KT-23857 Annotation with target TYPE is not applicable to TYPE_USE in Java sources
• KT-24717 Allow number literals to be used as unsigned ones with unsigned expected typed
• KT-24860 Forbid usage function expression as suspend function expression
• KT-24872 Do not generate user-defined methods inside box class of inline class
• KT-24873 Generate equals/hashCode/toString methods for inline classes same as for data classes
• KT-25246 Incorrect bytecode generated for secondary constructor in inline class + primitive array
• KT-25278 No smart cast for "returns() implies" contract when default argument is omitted
• KT-25287 Getter-targeted annotations on annotation constructor parameters are lost
• KT-25293 “Couldn't transform method node” error on compiling inline class with hashCode() method call when underlying value type is basic (number, char, boolean)
• KT-25299 NoSuchMethodError Foo$Erased.hashCode(Ljava/lang/Object;) for hashCode(), toString() and equals() methods in inline classes
• KT-25328 “Couldn't transform method node” error on compiling inline class which is wrapping Unit type
• KT-25330 CCE “[Ljava.lang.Integer; cannot be cast to Foo” for inline class which is wrapping Array
• KT-25521 Coroutines state machine in Kotlin 1.3 should not have getLabel/setLabel
• KT-25558 Stabilize field naming and mangling for suspending lambda classes
• KT-25580 No warning about experimental API when unsigned types are inferred
• KT-25599 “Exception during code generation” on compiling code with public constructor of unsigned numbers array
• KT-25614 Support secondary constructors for inline classes
• KT-25683 Compiler support for calling experimental suspend functions and function with experimental suspend function type as parameter
• KT-25688 Add $continuation to LVT
• KT-25750 CCE “Foo cannot be cast to java.lang.String” with inline class
• KT-25760 Inline data class throws java.lang.VerifyError when trying toString() it
• KT-25794 Incorrect code generated for accessing elements of Array where C is inline class
• KT-25824 Move SuspendFunctionN fictitious interfaces to kotlin.coroutines package
• KT-25825 Allow to distinguish instances of function types from instances of suspend function types via kotlin.coroutines.jvm.internal.SuspendFunction marker interface
• KT-25912 Calling groupingBy+reduce from suspend function causes IncompatibleClassChangeError
• KT-25914 '==' for inline class with custom 'equals' uses underlying primitive type comparison instead
• KT-25973 Report metadata version mismatch upon discovering a .kotlin_module file in the dependencies with an incompatible metadata version
• KT-25981 Incorrect code generated for unboxed to boxed inline class equality
• KT-25983 Inline class equality uses IEEE 754 instead of total order
• KT-26029 Prohibit delegated properties inside inline classes
• KT-26030 Prohibit implementation by delegation for inline classes
• KT-26052 Inline Classes: IllegalArgumentException when underlying type is non-null but declared type is nullable
• KT-26101 Prohibit inline classes with recursive underlying types
• KT-26103 Inline class with type parameters is inconsistently mapped to JVM type if underlying type is a primitive
• KT-26120 Inline Classes: Class inheritance is allowed but fails when referencing a superclass member

IDE

• KT-25316 PARTIAL resolve mode doesn't work when effects system is enabled
• KT-25611 With Language / API version = "Latest stable" installing 1.3-M1 plugin upgrades actual values to 1.3
• KT-25681 Remove "Coroutines (experimental)" settings from IDE and do not pass -Xcoroutines to JPS compiler (since 1.3)
• KT-25714 Kotlin plugin updater suggests plugins incompatible with current Studio build platform
• KT-26239 New MPP template: add kotlin-test libraries to the modules dependencies by default
• KT-26290 Gradle Import: When all modules have the same language/API version use it for project-level settings as well

IDE. Completion

• KT-25275 Code completion does not take into account smart casts gotten from "returns implies" contract

IDE. Inspections and Intentions

• KT-22330 "Add remaining branch" quickfix doesn't properly import enum class
• KT-22354 "Add remaining branches with import" quick fix causes KNPE at ImportAllMembersIntention$Companion.importReceiverMembers()
• KT-26158 KNPE in "Create local variable"

IDE. Multiplatform

• KT-26217 "org.jetbrains.kotlin.resolve.MultiTargetPlatform$Common cannot be cast to org.jetbrains.kotlin.resolve.MultiTargetPlatform$Specific" on splitted actuals

IDE. Script

• KT-25814 IDE scripting console -> kotlin (JSR-223) - compilation errors - unresolved IDEA classes
• KT-25822 jvmTarget from the script compiler options is ignored in the IDE

JavaScript

• KT-22053 JS: Secondary constructor of Throwable inheritor doesn't call to primary one
• KT-25014 Support 'when' with subject variable in JS back-end
• KT-26064 JS inliner calls wrong constructor in incremental build
• KT-26117 JS runtime error: ArrayList_init instead of ArrayList_init_0
• KT-26138 JS: prohibit external inline class
• KT-26171 Prohibit inline classes as parameter and return type of external declaration

Language design

• KT-7566 Annotate kotlin.test.Test.assertNotNull() so that safe dereference isn't required after it
• KT-14397 Make "smart cast" to non-null string working after isNullOrEmpty() check.
• KT-19532 Evaluation order for constructor call
• KT-22274 Restrict statement labels applicability

Libraries

New Features

• KT-13814 keys.associateWith { k -> v } function
• KT-15539 Random Convenience Method in Ranges (LongRange, IntRange, etc)
• KT-15695 String/Collection/Map/Array/Sequence.ifEmpty { null }
• KT-18986 Debug-friendly toString implementation for CoroutineImpl
• KT-25570 Random extensions to generate unsigned random numbers
• KT-25659 Consider adding SuccessOrFailure.getOrDefault function
• KT-25874 Support array copying between two existing arrays
• KT-25875 Need more access to raw underlying array in unsigned arrays
• KT-25962 Add contract for 'synchronized'
• KT-26339 Introduce CoroutineStackFrame interface for coroutine stack reconstruction in debugger

Fixes

• KT-16097 Index overflow when sequence has more than Int.MAX_VALUE elements
• KT-17176 Long/Int progressions with Long.MIN_VALUE and Int.MIN_VALUE step are weird
• KT-19305 IOStreams#readBytes is badly named
• KT-19489 Array.copyOfRange returns value violating declared type when bounds are out of range
• KT-21049 Different behavior in split by regex at JVM and JS
• KT-23799 Discontinue deprecated artifacts distribution: kotlin-runtime, kotlin-jslib, kotlin-stdlib-jre7/8
• KT-25274 contract() function has internal visibility
• KT-25303 checkNotNull(T?) has no contract in contrast to checkNotNull(T?, () -> Any)
• KT-25771 SuccessOrFailure.isFailure always returns false when boxed
• KT-25961 Provide a way to create default-initialized 'U*Array'
• KT-26161 String-to-number and number-to-string conversions for unsigned integers

Reflection

• KT-14657 Reflection: Provide ability to enumerate all cases of a sealed class
• KT-16795 KType does not implement KAnnotatedElement
• KT-21972 Reflection: Implement suspend functions KCallable.callSuspend, callSuspendBy, and isSuspend

Tools. CLI

• KT-25823 Report a warning or error if an old language version or API version is used

Tools. Gradle

• KT-26301 In new MPP, a project with no java or java-base plugin applied cannot depend on a published MPP lib or run tests

Tools. Scripts

• KT-26142 update maven-central remote repository url

1.3-M1 IDE plugins update

IDE

• Kotlin plugin for Android Studio 3.3 Canary 4 is ready
• KT-25713 Android Studio on 182 platform: Gradle project re-import fails
• KT-25733 "Convert Java File to Kotlin File" action was always disabled

1.3-M1

Language design

• KEEP-104 Inline classes
• KEEP-135 Unsigned integer types
• KEEP-95 Experimental API annotations
• KT-4895 Support assignment of "when" subject to a variable
• KT-13762 Prohibit annotations with target 'EXPRESSION' and retention 'BINARY' or 'RUNTIME'
• KT-16681 kotlin allows mutating the field of read-only property
• KT-21515 Restrict visibility of classifiers, nested in companion objects

Compiler

• KT-24848 Refine loading Java overrides of Kotlin suspend functions
• KT-9580 Report an error if 'setparam' target does not make sense for a parameter declaration
• KT-16310 Nested classes inside enum entries capturing outer members
• KT-17981 Type parameter for catch parameter possible when exception is nested in generic, but fails in runtime
• KT-21354 Inconsistent behavior of 'for-in-range' loop if range is an array variable modified in loop body
• KT-25333 Restrict visibility of Java static members from supertypes of companion object
• KT-25623 Do not load experimental coroutines as non-suspend function with additional Continuation parameter

Backend. JVM

• KT-6301 Support JvmStatic annotation on interface companion object members
• KT-25508 Inject probeCoroutineSuspended to coroutines body
• KT-18987 Unroll recursion in CoroutineImpl.resume
• KT-11567 Companion object INSTANCE field more visible than companion object class itself
• KT-13764 Support lambdas and function references for arities bigger than 22
• KT-16615 Do not generate ConstantValue attribute for non-const vals
• KT-25193 Names of parameters from Java interface methods implemented by delegation are lost
• KT-25324 VerifyError “Bad type on operand stack” on running code with call of array iterator for array of inline classes
• KT-25325 CCE “Foo cannot be cast to java.lang.String” for iterating over the list of inline classes
• KT-25626 Inline class values inside string literals don't use their own toString implementation

Backend. JVM. Coroutines

• KT-20219 Inline suspend function can't be used as non-inline function
• KT-24863 Support new Continuation API in JVM BE
• KT-24864 Create new CoroutineImpl and other internal coroutines interfaces

Backend. JVM. Inline

• KT-25511 Inline classes fail with cross-inline functions

Binary Metadata

• KT-24617 Optional expected annotation is unresolved in a dependent platform module
• KT-25120 RequireKotlin on nested class and its members is not loaded correctly
• KT-25273 java.lang.UnsupportedOperationException from incremental JS compilation
• KT-25310 Write isUnsigned flag into metadata for unsigned types

Frontend

• KT-15807 @JvmField is not applicable to interface companion properties
• KT-16962 Annotation classes cannot contain types or static fields because they cannot have a body
• KT-23153 Compiler allows to set non constant value as annotation parameter
• KT-23362 Move coroutines to package kolin.coroutines for 1.3
• KT-24861 Fix loading kotlin.suspend compiled with LV=1.2 when release coroutines package is used
• KT-25241 Kotlin compiler doesn't warn about usage of lambda/reference with more than 22 parameters
• KT-25600 NSEE “Collection is empty” after trying to call default constructor of unsigned number class

Frontend. Data-flow analysis

• KT-22517 Deprecate smartcasts for local delegated properties

Frontend. Declarations

• KT-19618 Data class copy() call with optional parameters leads to broken code when the class implements an interface with copy()
• KT-23277 Prohibit local annotation classes
• KT-24197 Make 'mod' operator error in 1.3

Frontend. Lexer & Parser

• KT-24663 Add 'UL' suffix to represent number literals of unsigned Long type

Frontend. Resolution and Inference

• KT-16908 Support callable references to suspending functions
• KT-20588 Report error on single element assignment to varargs in named form in annotations
• KT-20589 Report error on single element assignment to varargs in named form in functions
• KT-24859 Disallow calls of functions annotated with receiver annotated with @RestrictsSuspension in foreign suspension context

IDE

• KT-25466 Make coroutines resolve to be independent of language and API versions set in Kotlin Compiler settings

IDE. Inspections and Intentions

• KT-24243 Support quick fix to enable usages of Experimental/UseExperimental
• KT-11154 Spell checking inspection is not suppressable
• KT-25169 Impossible to suppress UAST/JVM inspections

IDE. Libraries

• KT-25129 Idea freezes when Kotlin plugin tries to determine if jar is js lib in jvm module

Libraries

New Features

• KEEP-131, KT-17261 Add random number generator to stdlib and related collection extension functions
• KT-7922 Companion object for Boolean
• KT-8247 Byte size for primitives
• KT-16552 Add Sequence.orEmpty()
• KT-18559 Make SafeContinuation and context impl classes serializable
• KT-18910 StringBuilder#setLength(0) in non-JVM Kotlin
• KT-21763 Provide Char MIN_VALUE/MAX_VALUE constants
• KT-23279 isNullOrEmpty() for collections, maps, and arrays
• KT-23602 Make kotlin.Metadata public

Fixes

• KT-23564 KotlinJS: Math is deprecated yet random is not a global function
• KT-24856 Create compatibility wrappers for migration from 1.2 to 1.3 coroutines
• KT-24862 Create new Continuation API for coroutines

Reflection

• KT-25541 Incorrect parameter names in reflection for inner class constructor from Java class compiled with "-parameters"

1.2.71

Compiler

• KT-26806 Defining constants using kotlin.math is broken in 1.2.70

IDE

• KT-26399 Kotlin Migration: NPE at KotlinMigrationProjectComponent$onImportFinished$1.run()
• KT-26794 Bad version detection during migration in Android Studio 3.2
• KT-26823 Fix deadlock in databinding with AndroidX which led to Android Studio hanging
• KT-26889 Don't show migration dialog if no actual migrations are available
• KT-25177 Report asDynamic on dynamic type as a warning
• KT-25454 Extract function: make default visibility private

JavaScript

• KT-26466 Uncaught ReferenceError: println is not defined

Tools. Gradle

• KT-26208 inspectClassesForKotlinIC slows down continuous mode in Gradle

Libraries

• KT-26929 Kotlin Reflect and Proguard: can’t find referenced class kotlin.annotations.jvm.ReadOnly/Mutable

1.2.70

Compiler

• KT-13860 Avoid creating KtImportDirective PSI elements for default imports in LazyImportScope
• KT-22201 Generate nullability annotations for data class toString and equals methods.
• KT-23870 SAM adapter method returns null-values for "genericParameterTypes"
• KT-24597 IDE doesn't report missing constructor on inheritance of an expected class in common module
• KT-25120 RequireKotlin on nested class and its members is not loaded correctly
• KT-25193 Names of parameters from Java interface methods implemented by delegation are lost
• KT-25405 Mismatching descriptor type parameters on inner types
• KT-25604 Disable callable references to exprerimental suspend functions
• KT-25665 Add a warning for annotations which target non-existent accessors
• KT-25894 Do not generate body for functions from Any in light class builder mode
• KT-20772 Incorrect smart cast on enum members
• KT-24657 Compiler performance issues with big files
• KT-25745 Do not report warning about annotations on non-existing accessors for JvmStatic properties
• KT-25746 Improve message for warning about annotations that have target to non-existing accessors
• KT-25810 New Inference: Overload resolution ambiguity on method 'provideDelegate(Nothing?, KProperty<*>)' when there's more than one provideDelegate operator in scope
• KT-25973 Report metadata version mismatch upon discovering a .kotlin_module file in the dependencies with an incompatible metadata version
• KT-22281 JVM: Incorrect comparison of Double and Float when types are derived from smart-casts
• KT-22649 Compiler: wrong code generated / Couldn't transform method node - using inline extension property inside lambda

IDE

• KT-18301 kotlin needs crazy amount of memory
• KT-23668 Methods with internal visibility have different mangling names in IDE and in compiler
• KT-24892 please remove usages of com.intellij.util.containers.ConcurrentFactoryMap#ConcurrentFactoryMap deprecated long ago
• KT-25144 Quick fix “Change signature” changes class of argument when applied for descendant classes with enabled -Xnew-inference option
• KT-25356 Update Gradle Kotlin-DSL icon according to new IDEA 2018.2 icons style
• KT-20056 TCE on creating object of an anonymous class in Kotlin script
• KT-25092 SourcePsi should be physical leaf element but got OPERATION_REFERENCE
• KT-25249 Uast operates "Unit" type instead of "void"
• KT-25255 Preferences | Languages & Frameworks | Kotlin Updates: show currently installed version
• KT-25297 Inconsistency in KotlinULambdaExpression and KotlinLocalFunctionULambdaExpression
• KT-25515 Add/remove analysis-related compiler setting does not update IDE project model immediately
• KT-25524 UAST: proper resolve for function variable call
• KT-25640 "Configure Kotlin" action changes values of language and API version in project settings

IDE. Debugger

• KT-25147 Conditional breakpoints doesn't work in common code of MPP
• KT-25152 MPP debug doesn't navigate to common code if there are same named files in common and platform parts

IDE. Gradle

• KT-22732 TestNG runner is always used for TestNG tests even when Use Gradle runner is selected
• KT-25913 Honor 'store generated project files externally option' for Kotlin facets imported from Gradle
• KT-25955 Support expect/actual in new MPP imported into IDEA

IDE. Inspections and Intentions

New Features

• KT-6633 Inspection to detect unnecessary "with" calls
• KT-25146 Add quick-fix for default parameter value removal
• KT-7675 Create inspection to replace if with let
• KT-13515 Add intention to replace '?.let' with null check
• KT-13854 Need intention actions: to convert property with getter to initializer
• KT-15476 Inspection to convert non-lazy chains of collection functions into sequences
• KT-22068 Force usage of “it” in .forEach{} calls
• KT-23445 Inspection and quickfix to replace assertTrue(a == b) with assertEquals(a, b)
• KT-25270 "return@foo" outside of lambda should have quickfix to remove "@foo" label

Fixes

• KT-11154 Spell checking inspection is not suppressable
• KT-18681 "Replace 'if' with 'when'" generates unnecessary else block
• KT-24001 "Suspicious combination of == and ===" false positive
• KT-24385 Convert lambda to reference refactor produces red code with companion object
• KT-24694 Move lambda out of parentheses should not be applied for multiple functional parameters
• KT-25089 False-positive "Call chain on collection type can be simplified" for map and joinToString on a HashMap
• KT-25169 Impossible to suppress UAST/JVM inspections
• KT-25321 Safe delete of a class property implementing constructor parameter at the platform side doesn't remove all the related declarations
• KT-25539 Make class open quick fix doesn't update all the related implementations of a multiplatform class
• KT-25608 Confusing "Redundant override" inspection message
• KT-16422 Replace lambda with method reference inspections fails
• KT-21999 Convert lambda to reference adds this with incorrect label
• KT-23467 False positive suspicious callable reference on scoping function called on another lambda
• KT-25044 "Implement member" quick-fix should not generate 'actual' modifier with expect declaration in interface only
• KT-25579 Redundant semicolon erroneously reported during local var modifier ambiguity
• KT-25633 “Add kotlin-XXX.jar to the classpath” quick fix adds dependency with invalid version in Gradle-based projects
• KT-25739 "Convert to run" / "Convert to with" intentions incorrectly process references to Java static members
• KT-25928 "Let extend" quick fix is suggested in case of nullable/non-null TYPE_MISMATCH collision
• KT-26042 False positive "Remove redundant '.let' call" for lambda with destructured arguments

IDE. KDoc

• KT-22815 Update quick documentation
• KT-22648 Quick Doc popup: break (long?) declarations into several lines

IDE. Libraries

• KT-25129 Idea freezes when Kotlin plugin tries to determine if jar is js lib in jvm module

IDE. Navigation

• KT-25317 Go to actual declaration keyboard shortcut doesn't work for expect object, showing "No implementations found" message
• KT-25492 Find usages: keep Expected functions option state while searching for usages of a regular function
• KT-25498 Find Usages doesn't show Supertype usages of actual declarations with constructor

IDE. Project View

• KT-22823 Text pasted into package is parsed as Kotlin before Java

IDE. Refactorings

• KT-22072 "Convert MutableMap.put to assignment" should not be applicable when put is used as expression
• KT-23590 Incorrect conflict warning "Internal function will not be accessible" when moving class from jvm to common module
• KT-23594 Incorrect conflict warning about IllegalStateException when moving class from jvm to common module
• KT-23772 MPP: Refactor / Rename class does not update name of file containing related expect/actual class
• KT-23914 Safe search false positives during moves between common and actual modules
• KT-25326 Refactor/Safe Delete doesn't report actual object usages
• KT-25438 Refactor/Safe delete of a multiplatform companion object: usage is not reported
• KT-25857 Refactoring → Move moves whole file in case of moving class from Kotlin script
• KT-25858 Refactoring → Move can be called only for class declarations in Kotlin script

IDE. Script

• KT-25814 IDE scripting console -> kotlin (JSR-223) - compilation errors - unresolved IDEA classes
• KT-25822 jvmTarget from the script compiler options is ignored in the IDE

IDE. Multiplatform

• KT-23368 IDE: Build: JPS errors are reported for valid non-multiplatform module depending on multiplatform one

IDE. Ultimate

• KT-25595 Rename Kotlin-specific "Protractor" run configuration to distinguish it from the one provided by NodeJS plugin
• KT-19309 Spring JPA Repository IntelliJ tooling with Kotlin

IDE. Tests Support

• KT-26228 NoClassDefFoundError: org/jetbrains/kotlin/idea/run/KotlinTestNgConfigurationProducer on running a JUnit test with TestNG plugin disabled

Reflection

• KT-25541 Incorrect parameter names in reflection for inner class constructor from Java class compiled with "-parameters"

Tools. CLI

• KT-21910 Add -Xfriend-paths compiler argument to support internal visibility checks in production/test sources from external build systems
• KT-25554 Do not report warnings when -XXLanguage was used to turn on deprecation
• KT-25196 Optional expected annotation is visible in platforms where it doesn't have actual

Tools. JPS

• KT-25540 JPS JS IC does not recompile usages from other modules when package is different

Tools. kapt

• KT-25396 KAPT Error: Unknown option: infoAsWarnings
• KT-26211 Kotlin plugin 1.2.60+ breaks IDEA source/resource/test roots in a Maven project with Kapt

Tools. Gradle

• KT-25025 Inter-project IC for JS in Gradle
• KT-25455 Gradle IC: when class signature is changed its indirect subclasses in different module are not recompiled

Tools. JPS

• KT-25998 Build process starts compiling w/o any changes (on release version)
• KT-25977 Can not run a Kotlin test
• KT-26072 MPP compilation issue
• KT-26113 Build takes around 20 seconds in already fully built IDEA project

Tools. Scripts

• KT-26142 update maven-central remote repository url

Tools. Incremental Compile

• KT-26528 ISE “To save disabled cache status [delete] should be called (this behavior is kept for compatibility)” on compiling project with enabled IC in Maven

JavaScript

• KT-22053 JS: Secondary constructor of Throwable inheritor doesn't call to primary one
• KT-26064 JS inliner calls wrong constructor in incremental build
• KT-26117 JS runtime error: ArrayList_init instead of ArrayList_init_0

Libraries

• KT-18067 KotlinJS - String.compareTo(other: String, ignoreCase: Boolean = false): Int
• KT-19507 Using @JvmName from stdlib-common fails to compile in JS module.
• KT-19508 Add @JsName to stdlib-common for controlling JS implementation
• KT-24478 Annotate relevant standard library annotations with @OptionalExpectation
• KT-25980 JvmSynthetic annotation has no description in the docs

1.2.60

Compiler

• KT-13762 Prohibit annotations with target 'EXPRESSION' and retention 'BINARY' or 'RUNTIME'
• KT-18882 Allow code to have platform specific annotations when compiled for different platforms
• KT-20356 Internal compiler error - This method shouldn't be invoked for INVISIBLE_FAKE visibility
• KT-22517 Deprecate smartcasts for local delegated properties
• KT-23153 Compiler allows to set non constant value as annotation parameter
• KT-23413 IndexOutOfBoundsException on local delegated properties from provideDelegate if there's at least one non-local delegated property
• KT-23742 Optimise inline class redundant boxing on return from inlined lambda
• KT-24513 High memory usage in Kotlin and 2018.1
• KT-24617 Optional expected annotation is unresolved in a dependent platform module
• KT-24679 KotlinUCallExpression doesn't resolve callee if it is an inline method
• KT-24808 NI: nested withContext call is reported with Suspension functions can be called only within coroutine body error
• KT-24825 NoClassDefFoundError on SAM adapter in a nested call in inlined lambda since 1.2.40
• KT-24859 Disallow calls of functions annotated with receiver annotated with @RestrictsSuspension in foreign suspension context
• KT-24911 Kotlin 1.2.50: UI for @RecentlyNonNull looks strange in the editor
• KT-25333 Restrict visibility of Java static members from supertypes of companion object

IDE

Performance Improvements

• KT-20924 Slow KtLightAbstractAnnotation.getClsDelegate() lightAnnotations.kt
• KT-23844 Kotlin property accessor searcher consumes CPU when invoked on a scope consisting only of Java files

Fixes

• KT-4311 "Override members" works wrong when function is extension
• KT-13948 IDE plugins: improve description
• KT-15300 "INFO - project.TargetPlatformDetector - Using default platform" flood in log
• KT-17350 Implement members from interface fails when one of the generic types is unresolved
• KT-17668 Edit Configuration dialog doesn't have a button for choosing the "Main class" field
• KT-19102 Wrong equals() and hashCode() code generated for arrays of arrays
• KT-20056 TCE on creating object of an anonymous class in Kotlin script
• KT-21863 Imported typealias to object declared as "Unused import directive" when only referring to methods
• KT-23272 Git commit not working
• KT-23407 Pasting callable reference from different package suggests imports, but inserts incompilable FQN
• KT-23456 UAST: Enum constant constructor call arguments missing from Kotlin enums
• KT-23942 Fix building light-classes for MPP project containing multi-file facades
• KT-24072 Kotlin SDK appears as many times as there are modules in the project
• KT-24412 Kotlin create project wizard: Kotlin/JS no SDK
• KT-24933 please remove usages of com.intellij.psi.search.searches.DirectClassInheritorsSearch#search(com.intellij.psi.PsiClass, com.intellij.psi.search.SearchScope, boolean, boolean) deprecated long ago
• KT-24943 Project leak via LibraryEffectiveKindProviderImpl
• KT-24979 IndexNotReadyException in KtLightClassForSourceDeclaration#isInheritor
• KT-24958 Escaping goes insane when editing interpolated string in injected fragment editor
• KT-25024 Wrong resolve scope while resolving java.lang.String PsiClassReferenceType
• KT-25092 SourcePsi should be physical leaf element but got OPERATION_REFERENCE
• KT-25242 'Resolved to error element' highlighting is confusingly similar to an active live template
• KT-25249 Uast operates "Unit" type instead of "void"
• KT-25255 Preferences | Languages & Frameworks | Kotlin Updates: show currently installed version
• KT-25297 Inconsistency in KotlinULambdaExpression and KotlinLocalFunctionULambdaExpression
• KT-25414 Support checking eap-1.3 channel for updates
• KT-25524 UAST: proper resolve for function variable call
• KT-25546 Create popup in 1.2.x plugin if user upgrade version in gradle or maven to kotlin 1.3

IDE. Android

• KT-17946 Android Studio: remove Gradle configurator on configuring Kotlin
• KT-23040 Wrong run configuration classpath in a mixed Java/Android project
• KT-24321 Actual implementations from Android platform module are wrongly reported with no corresponding expected declaration in IDE
• KT-25018 Exception Dependencies for org.jetbrains.kotlin.resolve.calls.* cannot be satisfied on a simple project in AS 3.2 Canary

IDE. Code Style, Formatting

• KT-14066 Comments on when branches are misplaced
• KT-25008 Formatter: Use single indent for multiline elvis operator

IDE. Completion

• KT-23627 Autocompletion inserts FQN of stdlib functions inside of scoping lambda called on explicit this
• KT-25239 Add postfix template for listOf/setOf/etc

IDE. Debugger

• KT-23162 Evaluate expression in multiplatform common test fails with JvmName missing when run in JVM
• KT-24903 Descriptors leak from KotlinMethodSmartStepTarget

IDE. Decompiler

• KT-23981 Kotlin bytecode decompiler works in AWT thread

IDE. Gradle

• KT-24614 Gradle can't get published versions until commenting repositories in settings.gradle

IDE. Gradle. Script

• KT-24588 Multiple Gradle Kotlin DSL script files dependencies lifecycle is flawed

IDE. Hints

• KT-22432 Type hints: Don't include ".Companion" in the names of types defined inside companion object
• KT-22653 Lambda return hint is duplicated for increment/decrement expressions
• KT-24828 Double return hints on labeled expressions

IDE. Inspections and Intentions

New Features

• KT-7710 Intention to convert lambda to anonymous function
• KT-11850 Add nested lambdas with implicit parameters warning
• KT-13688 Add 'Change to val' quickfix for delegates without setValue
• KT-13782 Intention (and may be inspection) to convert toString() call to string template
• KT-14779 Inspection to replace String.format with string templates
• KT-15666 Unused symbol: delete header & its implementations together
• KT-18810 Quick-fix for 'is' absence in when
• KT-22871 Add quickfix to move const val into companion object
• KT-23082 Add quick-fix for type variance conflict
• KT-23306 Add intention of putting remaining when-values even in end, and even if there is "else"
• KT-23897 Inspections: report extension functions declared in same class
• KT-24295 Add "Remove 'lateinit'" quickfix
• KT-24509 Inspection "JUnit tests should return Unit"
• KT-24815 Add Quick fix to remove illegal "const" modifier
• KT-25238 Add quickfix wrapping expression into listOf/setOf/etc in case of type mismatch

Fixes

• KT-12298 Fix override signature doesn't remove bogus reciever
• KT-20523 Don't mark as unused functions with @kotlin.test.* annotations and classes with such members
• KT-20583 Report "redundant let" even for it in argument position
• KT-21556 "Call chain on collection type may be simplified" generates uncompiled code on IntArray
• KT-22030 Invalid Function can be private inspection
• KT-22041 "Convert lambda to reference" suggested incorrectly
• KT-22089 Explict This inspection false negative with synthetic Java property
• KT-22094 Can be private false positive with function called from lambda inside inline function
• KT-22162 Add indices to loop fails on destructing declarator
• KT-22180 "Can be private" false positive when function is called by inline function inside property initializer
• KT-22371 "Create secondary constructor" quick fix is not suggested for supertype constructor reference
• KT-22758 "Create ..." and "Import" quick fixes are not available on unresolved class name in primary constructor
• KT-23105 Create actual implementation shouldn't generate default parameter values
• KT-23106 Implement methods should respect actual modifier as well
• KT-23326 "Add missing actual members" quick fix fails with AE at KtPsiFactory.createDeclaration() with wrong expect code
• KT-23452 "Remove unnecessary parentheses" reports parens of returned function
• KT-23686 "Add missing actual members" should not add primary actual constructor if it's present as secondary one
• KT-23697 Android project with 'org.jetbrains.kotlin.platform.android' plugin: all multiplatform IDE features are absent
• KT-23752 False positive "Remove variable" quick fix on property has lambda or anonymous function initializer
• KT-23762 Add missing actual members quick fix adds actual declaration for val/var again if it was in the primary constructor
• KT-23788 Can't convert long char literal to string if it starts with backslash
• KT-23860 Import quick fix is not available in class constructor containing transitive dependency parameters
• KT-24349 False positive "Call on collection type may be reduced"
• KT-24374 "Class member can have private visibility" inspection reports expect members
• KT-24422 Android Studio erroneously reporting that @Inject lateinit var can be made private
• KT-24423 False inspection warning "redundant type checks for object"
• KT-24425 wrong hint remove redundant Companion
• KT-24537 False positive property can be private on actual properties in a multiplatform project
• KT-24557 False warning "Remove redundant call" for nullable.toString
• KT-24562 actual extension function implementation warns Receiver type unused
• KT-24632 Quick fix to add getter and setter shouldn't use field when it is not allowed
• KT-24816 Inspection: Sealed subclass can be object shouldn't be reported on classes with state

IDE. JS

• KT-5948 JS: project shouldn't have "Java file" in new item menu

IDE. Multiplatform

• KT-23722 MPP: Run tests from common modules should recompile correspond JVM implementation module
• KT-24159 MPP: Show Kotlin Bytecode does not work for common code
• KT-24839 freeCompilerArgs are not imported into Kotlin facet of Android module in IDEA

IDE. Navigation

• KT-11477 Kotlin searchers consume CPU in a project without any Kotlin files
• KT-17512 Finding usages of actual declarations in common modules
• KT-20825 Header icon on actual class is lost on new line adding
• KT-21011 Difference in information shown for "Is subclassed by" gutter on mouse hovering and clicking
• KT-21113 Expected gutter icon on companion object is unstable
• KT-21710 Override gutter markers are missing for types in sources jar
• KT-22177 Double "A" icon for an expect class with constructor
• KT-23685 Navigation from expect part to actual with ctrl+alt+B shortcut should provide a choice to what actual part to go
• KT-24812 Search suggestion text overlaps for long names

IDE. Refactorings

• KT-15159 Introduce typealias: Incorrect applying of a typealias in constructor calls in val/var and AssertionError
• KT-15351 Extract Superclass/Interface: existent target file name is rejected; TCE: "null cannot be cast to non-null type org.jetbrains.kotlin.psi.KtFile" at ExtractSuperRefactoring.createClass()
• KT-16281 Extract Interface: private member with Make Abstract = Yes produces incompilable code
• KT-16284 Extract Interface/Superclass: reference to private member turns incompilable, when referring element is made abstract
• KT-17235 Introduce Parameter leaks listener if refactoring is cancelled while in progress
• KT-17742 Refactor / Rename Java getter to get() does not update Kotlin references
• KT-18555 Refactor / Extract Interface, Superclass: Throwable: "Refactorings should be invoked inside transaction" at RefactoringDialog.show()
• KT-18736 Extract interface: import for property type is omitted
• KT-20260 AE “Unexpected container” on calling Refactor → Move for class in Kotlin script
• KT-20465 "Introduce variable" in build.gradle.kts creates a variable with no template to change its name
• KT-20467 Refactor → Extract Function: CCE “KtNamedFunction cannot be cast to KtClassOrObject” on calling refactoring for constructor
• KT-20469 NDFDE “Descriptor wasn't found for declaration VALUE_PARAMETER” on calling Refactor → Extract Function on constructor argument
• KT-22931 Converting a scoping function with receiver into one with parameter may change the semantics
• KT-23983 Extract function: Reified type parameters are not extracted properly
• KT-24460 Rename refactoring does not update super call
• KT-24574 Changing Java constructor signature from Kotlin usage is totally broken
• KT-24712 Extract Function Parameter misses 'suspend' for lambda type
• KT-24763 "Change signature" refactoring breaks Kotlin code
• KT-24968 Type hints disappear after "Copy" refactoring
• KT-24992 The IDE got stuck showing a modal dialog (kotlin refactoring) and doesn’t react to any actions

IDE. Script

• KT-25373 Deadlock in idea plugin

IDE. Tests Support

• KT-18319 Gradle: Run tests action does not work when test name contains spaces
• KT-22306 Empty gutter menu for main() and test methods in Kotlin/JS project
• KT-23672 JUnit test runner is unaware of @kotlin.test.Test tests when used in common multiplatform module, even if looked from JVM multiplatform module
• KT-25253 No “run” gutter icons for tests in Kotlin/JS project

JavaScript

• KT-22376 JS: TranslationRuntimeException on 'for (x in ("a"))'
• KT-23458 ClassCastException when compiling when statements to JS

Libraries

• KT-24204 Empty progression last value overflows resulting in progression being non-empty
• KT-25351 TestNGAsserter needs to swap expected/actual

Reflection

• KT-16616 KotlinReflectionInternalError: Reflection on built-in Kotlin types is not yet fully supported in getMembersOfStandardJavaClasses.kt
• KT-17542 KotlinReflectionInternalError on ::values of enum class
• KT-20442 ReflectJvmMapping.getJavaConstructor() fails with Call is not yet supported for anonymous class
• KT-21973 Method.kotlinFunction for top level extension function returns null when app is started from test sources
• KT-22048 Reflection explodes when attempting to get constructors of an enum with overridden method

Tools. Android Extensions

• KT-22576 Parcelable: Allow Parcelize to work with object and enum types
• KT-24459 @IgnoredOnParcel annotation doesn't work for @Parcelize
• KT-24720 Parcelable: java.lang.LinkageError

Tools. Compiler Plugins

• KT-23808 Array in @Parcelize class generates an java.lang.VerifyError

Tools. Gradle

• KT-18621 org.jetbrains.kotlin.incremental.fileUtils.kt conflicts when compiler and gradle plugin in classpath
• KT-24497 Externalized all-open plugin is not applied to a project
• KT-24559 Multiple Kotlin daemon instances are started when building MPP with Gradle
• KT-24560 Multiple Kotlin daemon instances are started when Gradle parallel build is used
• KT-24653 Kotlin plugins don't work when classpath dependency is not declared in current or root project
• KT-24675 Use Gradle dependency resolution to get compiler classpath
• KT-24676 Use Gradle dependency resolution to form compiler plugin classpath
• KT-24946 ISE: "The provided plugin org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar is not compatible with this version of compiler" when build simple Gradle with Zulu JDK

Tools. Incremental Compile

• KT-25051 Change in "kotlin-android" project w/o package parts causes non-incremental compilation of dependent modules

Tools. J2K

• KT-9945 converting java to kotlin confuses git

Tools. JPS

• KT-19957 Support incremental compilation to JS in JPS
• KT-22611 Support compiling scripts in JPS
• KT-23558 JPS: Support multiplatform projects
• KT-23757 JPS: Incremental multiplatform projects compilation
• KT-24936 Don't use internal terms in compiler progress messages
• KT-25218 Build fails as Javac doesn't see Kotlin classes

Tools. Scripts

• KT-24926 NoSuchElementException in TemplateAnnotationVisitor when upgrading the Gradle Kotlin DSL to Kotlin 1.2.50

Tools. kapt

• KT-24313 Unable to use KAPT when dependency to it is added to buildSrc
• KT-24449 'kapt.kotlin.generated' is not marked as source root in Android Studio 3.1 and 3.2
• KT-24538 Kapt performs Kotlin compilation when annotation processors are not configured
• KT-24919 Caused by: org.gradle.api.InvalidUserDataException: 'projectDir' is not a file
• KT-24963 gradle kapt plugin's assumption on build dir causing duplicate class error
• KT-24985 Kapt: Allow to disable info->warning mapping in logger
• KT-25071 kapt sometimes emits java stubs with imports that should be static imports
• KT-25131 Kapt should not load annotation processors when generating stubs

1.2.51

Backend. JVM

• KT-23943 Wrong autoboxing for non-null inline class inside elvis with null constant
• KT-24952 EnumConstantNotPresentExceptionProxy from Java reflection on annotation class with target TYPE on JVM < 8
• KT-24986 Android project release build with ProGuard enabled crashes with IllegalAccessError: Final field cannot be written to by method

Binary Metadata

• KT-24944 Exception from stubs: "Unknown type parameter with id = 1" (EA-120997)

Reflection

• KT-23962 MalformedParameterizedTypeException when reflecting GeneratedMessageLite.ExtendableMessage

Tools. Gradle

• KT-24956 Kotlin Gradle plugin's inspectClassesForKotlinIC task for the new 1.2.50 release takes incredibly long
• KT-23866 Kapt plugin should pass arguments from compiler argument providers to annotation processors
• KT-24716 1.2.50 emits warning "Classpath entry points to a non-existent location:"
• KT-24832 Inter-project IC does not work when "kotlin-android" project depends on "kotlin" project
• KT-24938 Gradle parallel execution fails on multi-module Gradle Project
• KT-25027 Kapt plugin: Kapt and KaptGenerateStubs tasks have some incorrect inputs

Tools. Scripts

• KT-24926 NoSuchElementException in TemplateAnnotationVisitor when upgrading the Gradle Kotlin DSL to Kotlin 1.2.50

1.2.50

Compiler

• KT-23360 Do not serialize annotations with retention SOURCE to metadata
• KT-24278 Hard-code to kotlin compiler annotation for android library migration
• KT-24472 Support argfiles in kotlinc with -Xargfile
• KT-24593 Support -XXLanguage:{+|-}LanguageFeature compiler arguments to enable/disable specific features
• KT-24637 Introduce "progressive" mode of compiler

Backend. JS

• KT-23094 JS compiler: Delegation fails to pass the continuation parameter to child suspend function
• KT-23582 JS: Fails to inline, produces bad code
• KT-24335 JS: Invalid implement of external interface

Backend. JVM

• KT-12330 Slightly improve generated bytecode for data class equals/hashCode methods
• KT-18576 Debugger fails to show decomposed suspend lambda parameters
• KT-22063 Add intrinsics for javaObjectType and javaPrimitiveType
• KT-23402 Internal error: Couldn't inline method call because the compiler couldn't obtain compiled body for inline function with reified type parameter
• KT-23704 Unstable checkExpressionValueIsNotNull() generation in bytecode
• KT-23707 Unstable bridge generation order
• KT-23857 Annotation with target TYPE is not applicable to TYPE_USE in Java sources
• KT-23910 @JvmOverloads doesn't work with default arguments in common code
• KT-24427 Protected function having toArray-like signature from collection becomes public in bytecode
• KT-24661 Support binary compatibility mode for @JvmDefault

Frontend

• KT-21129 Unused parameter in property setter is not reported
• KT-21157 Kotlin script: engine can take forever to eval certain code after several times
• KT-22740 REPL slows down during extensions compiling
• KT-23124 Kotlin multiplatform project causes IntelliJ build errors
• KT-23209 Compiler throwing frontend exception
• KT-23589 Report a warning on local annotation classes
• KT-23760 Unable to implement common interface with fun member function with typealiased parameter

Android

• KT-23244 Option to Disable View Binding generation in Kotlin Android Extensions Plugin

IDE

• KT-8407 TestNG: running tests from context creates new run configuration every time
• KT-9218 Searching for compilable files takes too long
• KT-15019 Editor: args reference in .kts file is red
• KT-18769 Expand Selection on opening curly brace should select the entire block right away
• KT-19055 Idea hangs on copy-paste big Kotlin files
• KT-20605 Unresolved reference on instance from common module function
• KT-20824 Type mismatch for common function taking a non-mapped Kotlin's expected class from stdlib-common, with actual typealias on JVM
• KT-20897 Can't navigate to declaration after PsiInvalidElementAccessException exception
• KT-22527 Kotlin UAST does not evaluate values inside delegation expressions
• KT-22868 Implementing an expected class declaration using actual typealias produces "good code that is red"
• KT-22922 Override Members should add experimental annotation when required
• KT-23384 Hotspot in org.jetbrains.kotlin.idea.caches.resolve.IDELightClassGenerationSupport.getKotlinInternalClasses(FqName, GlobalSearchScope) IDELightClassGenerationSupport.kt ?
• KT-23408 Don't render @NonNull and @Nullable annotations in parameter info for Java methods
• KT-23557 Expression Bodies should have implicit return in Uast
• KT-23745 Unable to implement common interface
• KT-23746 Logger$EmptyThrowable "[kts] cannot find a valid script definition annotation on the class class ScriptTemplateWithArgs" with LivePlugin enabled
• KT-23975 Move Kotlin internal actions under Idea Internal actions menu
• KT-24268 Other main menu item
• KT-24438 ISE “The provided plugin org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar is not compatible with this version of compiler” after rebuilding simple Gradle-based project via JPS.

IDE. Configuration

• KT-10935 Add menu entry to create new kotlin .kts scripts
• KT-20511 Library added from maven (using IDEA UI) is not detected as Kotlin/JS library (since type="repository")
• KT-20665 Kotlin Gradle script created by New Project/Module wizard fails with Gradle 4.1+
• KT-21844 Create Kotlin class dialog: make class abstract automatically
• KT-22305 Language and API versions of Kotlin compiler are “Latest” by default in some ways of creating new project
• KT-23261 New MPP design: please show popup with error message if module name is not set
• KT-23638 Kotlin plugin breaks project opening for PhpStorm/WebStorm
• KT-23658 Unclear options “Gradle” and “Gradle (Javascript)” on configuring Kotlin in Gradle- and Maven-based projects
• KT-23845 IntelliJ Maven Plugin does not pass javaParameters option to Kotlin facet
• KT-23980 Move "Update Channel" from "Configure Kotlin Plugin Updates" to settings
• KT-24504 Existent JPS-based Kotlin/JS module is converted to new format, while New Project wizard and facet manipulations still create old format

IDE. Debugger

• KT-23886 Both java and kotlin breakpoints in kotlin files
• KT-24136 Debugger: update drop-down menu for the line with lambdas

IDE. Editing

• KT-2582 When user inputs triple quote, add matching triple quote automatically
• KT-5206 Long lists of arguments are not foldable
• KT-23457 Auto-import and Import quick fix do not suggest classes from common module [Common test can't find class with word Abstract in name.]
• KT-23235 Super slow editing with auto imports enabled

IDE. Gradle

• KT-23234 Test names for tests containing inner classes are sporadically reported to teamcity runs.
• KT-23383 Optional plugin dependency for kotlin gradle plugin 'java' subsystem dependent features
• KT-22588 Resolver for 'project source roots and libraries for platform JVM' does not know how to resolve on Gradle Kotlin DSL project without Java and Kotlin
• KT-23616 Synchronize script dependencies not at Gradle Sync
• KT-24444 Do not store proxy objects from Gradle importer in the project model
• KT-24586 MVNFE “Cannot resolve external dependency org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.41 because no repositories are defined.” on creating Gradle project with Kotlin only (probably due to lack of repositories block)
• KT-24671 dependencies missed in buildscript block after creating new Gradle-based project in 173 IDEA

IDE. Inspections and Intentions

New Features

• KT-7822 Convert foreach to for loop should place caret on the variable declaration
• KT-9943 Quick fix/Intention to indent a raw string
• KT-15063 Inspection for coroutine: unused Deferred result
• KT-16085 Inspection "main should return Unit"
• KT-20305 Inspection: Refactor sealed sub-class to object
• KT-21413 Missing inspection: parentheses can be deleted when the only constructor parameter is a function not existing
• KT-23137 Intention for converting to block comment and vise versa
• KT-23266 Add intention(s) to put arguments / parameters on one line
• KT-23419 Intention to replace vararg with array and vice versa
• KT-23617 Add inspection: redundant internal in local anonymous object / class
• KT-23775 IntelliJ plugin: improve "accessor call that can be replaced with property"
• KT-24235 Inspection to replace async.await with withContext
• KT-24263 Add Make variable immutable quickfix for const
• KT-24433 Inspection for coroutines: unused async result

Performance Improvements

• KT-23566 "Can be private" works on ResolutionResultsCache.kt (from Kotlin project) enormously slow

Fixes

• KT-6364 Incorrect quick-fixes are suggested for nullable extension function call
• KT-11156 Incorrect highlighting for nested class in "Redundant SAM-constructor" inspection
• KT-11427 "Replace if with when" does not take break / continue into account
• KT-11740 Invert if condition intention should not remove line breaks
• KT-12042 "Merge with next when" is not applicable when the statements delimited by semicolon or comment
• KT-12168 "Remove explicit type specification" intention produce incompilable code in case of function type
• KT-14391 RemoveUnnecessaryParenthesesIntention lost comment on closing parenthesis
• KT-14556 Quickfix to suggest use of spread operator does not work with mapOf
• KT-15195 Redundant parentheses shouldn't be reported if lambda is not on the same line
• KT-16770 Change type of function quickfix does not propose most idiomatic solutions
• KT-19629 "Convert to primary constructor" quick fix should not move init{...} section down
• KT-20123 Kotlin Gradle script: “Refactoring cannot be performed. Cannot modify build.gradle.kts” for some refactorings and intentions
• KT-20332 Unused property declaration suppression by annotation doesn't work if annotation is targeted to getter
• KT-21878 "arrayOf() call can be replaced by array litteral [...]" quick fix inserts extra parentheses
• KT-22092 Intention "Specify return type explicitly": Propose types from overriden declarations
• KT-22615 "Replace with" intention does not work for equal names
• KT-22632 Gutter icon "go to actual declaration" is absent for enum values on actual side
• KT-22741 Wrong suggestion for Replace 'if' expression with elvis expression
• KT-22831 Inspection for converting to elvis operator does not work for local vars
• KT-22860 "Add annotation target" quick fix does not take into account existent annotations in Java source
• KT-22918 Create interface quickfix is missing 'current class' container
• KT-23133 "Remove redundant calls of the conversion method" wrongly shown for Boolan to Int conversion
• KT-23167 Report "use expression body" also on left brace
• KT-23194 Inspection "map.put() should be converted to assignment" leads to red code in case of labled return
• KT-23303 "Might be const" inspection does not check explicit type specification
• KT-23320 Quick fix to add constructor invocation doesn't work for sealed classes
• KT-23321 Intention to move type to separate file shouldn't be available for sealed classes
• KT-23346 Lift Assignment quick fix incorrectly processes block assignments
• KT-23377 Simplify boolean expression produces incorrect results when mixing nullable and non-nullable variables
• KT-23465 False positive suspicious callable reference on lambda invoke with parameters
• KT-23511 "Remove parameter" quick fix makes generic function call incompilable when type could be inferred from removed parameter only
• KT-23513 "Remove parameter" quick fix makes caret jump to the top of the editor
• KT-23559 Wrong hint text for "assignment can be replaced with operator assignment"
• KT-23608 AE “Failed to create expression from text” after applying quick fix “Convert too long character literal to string”
• KT-23620 False positive Redundant Companion reference on calling object from companion
• KT-23634 'Add use-site target' intention drops annotation arguments
• KT-23753 "Remove variable" quick fix should not remove comment
• KT-23756 Bogus "Might be const" warning in object expression
• KT-23778 "Convert function to property" intention shows broken warning
• KT-23796 "Create extension function/property" quick fix suggests one for nullable type while creates for not-null
• KT-23801 "Convert to constructor" (IntelliJ) quick fix uses wrong use-site target for annotating properties
• KT-23977 wrong hint Unit redundant
• KT-24066 'Remove redundant Unit' false positive when Unit is returned as Any
• KT-24165 @Deprecated ReplaceWith Constant gets replaced with nothing
• KT-24207 Add parameter intent/red bulb should use auto casted type.
• KT-24215 ReplaceWith produces broken code for lambda following default parameter

IDE. Multiplatform

• KT-20406 Overload resolution ambiguity in IDE on expect class / actual typealias from kotlin-stdlib-common / kotlin-stdlib
• KT-24316 Missing dependencies in Kotlin MPP when using gradle composite builds

IDE. Navigation

• KT-7622 Searching usages of a field/constructor parameter in a private class seems to scan through the whole project
• KT-23182 Find Usages checks whether there are unused variables in functions which contain search result candidates
• KT-23223 Navigate to actual declaration from actual usage

IDE. Refactorings

• KT-12078 Introduce Variable adds explicit type when invoked on anonymous object
• KT-15517 Change signature refactoring shows confusing warning dialog
• KT-22387 Change signature reports "Type cannot be resolved" for class from different package
• KT-22669 Refactor / Copy Kotlin source to plain text causes CCE: "PsiPlainTextFileImpl cannot be cast to KtFile" at CopyKotlinDeclarationsHandler$doCopy$2$1$1.invoke()
• KT-22888 Rename completion cuts off all characters except letters from existent name
• KT-23298 AE: "2 declarations in null..." on rename of a field to object or class
• KT-23563 null by org.jetbrains.kotlin.idea.refactoring.rename.KotlinMemberInplaceRenameHandler$RenamerImpl exception on trying in-place Rename of non-scratch functions
• KT-23613 Kotlin safe delete processor handles java code when it should not
• KT-23644 Named parameters in generated Kotlin Annotations
• KT-23714 Add Parameter quickfix not working when the called method is in java.
• KT-23838 Do not search for usages in other files when renaming local variable
• KT-24069 'Create from usage' doesn't use type info with smart casts

IDE. Scratch

• KT-6928 Support Kotlin scratch files
• KT-23441 Scratch options reset on IDE restart
• KT-23480 java.util.NoSuchElementException: "Collection contains no element matching the predicate" on run of a scratch file with unresolved function parameter
• KT-23587 Scratch: references from scratch file aren't taken into account
• KT-24016 Make long scratch output lines readable
• KT-24315 Checkbox labels aren't aligned in scratch panel
• KT-24636 Run Scratch when there are compilation errors in module

Tools. J2K

• KT-22989 Exception "Assertion failed: Refactorings should be invoked inside transaction" on creating UI Component/Notification

Libraries

• KT-10456 Common Int.toString(radix: Int) method
• KT-22298 Improve docs for Array.copyOf(newSize: Int)
• KT-22400 coroutineContext shall be in kotlin.coroutines.experimental package
• KT-23356 Cross-platform function to convert CharArray slice to String
• KT-23920 CharSequence.trimEnd calls substring instead of subSequence
• KT-24353 Add support for junit 5 in kotlin.test
• KT-24371 Invalid @returns tag does not display in Android Studio popup properly

Gradle plugin

• KT-20214 NoClassDefFound from Gradle (should report missing tools.jar)
• KT-20608 Cannot reference operator overloads across submodules (.kotlin_module not loaded when a module name has a slash)
• KT-22431 Inter-project incremental compilation does not work with Android plugin 2.3+
• KT-22510 Common sources aren't added when compiling custom source set with Gradle multiplatform plugin
• KT-22623 Kotlin JVM tasks in independent projects are not executed in parallel with Gradle 4.2+ and Kotlin 1.2.20+
• KT-23092 Gradle plugin for MPP common modules should not remove the 'compileJava' task from project.tasks
• KT-23574 'archivesBaseName' does not affect module name in common modules
• KT-23719 Incorrect Gradle Warning for expectedBy in kotlin-platform-android module
• KT-23878 Kapt: Annotation processors are run when formatting is changed
• KT-24420 Kapt plugin: Kapt task has overlapping outputs (and inputs) with Gradle's JavaCompile task
• KT-24440 Gradle daemon OOM due to function descriptors stuck forever

Tools. kapt

• KT-23286 kapt + nonascii = weird pathes
• KT-23427 kapt: for element with multiple annotations, annotation values erroneously use default when first annotation uses default
• KT-23721 Warning informing user that 'tools.jar' is absent in the plugin classpath is not show when there is also an error
• KT-23898 Kapt: Do now show a warning for APs from 'annotationProcessor' configuration also declared in 'kapt' configuration
• KT-23964 Kotlin Gradle plugin does not define inputs and outputs of annotation processors

1.2.41

Compiler – Fixes

• KT-23901 Incremental compilation fails on Java 9
• KT-23931 Exception on optimizing eternal loops
• KT-23900 Exception on some cases with nested arrays
• KT-23809 Exception on processing complex hierarchies with suspend functions when -Xdump-declarations-to is active

Other

• KT-23973 New compiler behavior lead to ambiguous mappings in Spring Boot temporarily reverted

1.2.40

Compiler

New Features

• KT-22703 Allow expect/actual annotation constructors to have default values
• KT-19159 Support crossinline lambda parameters of suspend function type
• KT-21913 Support default arguments for expected declarations
• KT-19120 Provide extra compiler arguments in ScriptTemplateDefinition
• KT-19415 Introduce @JvmDefault annotation
• KT-21515 Restrict visibility of classifiers inside companion objects

Performance Improvements

• KT-10057 Use lcmp instruction instead of kotlin/jvm/internal/Intrinsics.compare
• KT-14258 Suboptimal codegen for private fieldaccess to private field in companion object
• KT-18731 == between enums should use reference equality, not Intrinsics.areEqual().
• KT-22714 Unnecessary checkcast to array of object from an array of specific type
• KT-5177 Optimize code generation for for loop with withIndex()
• KT-19477 Allow to implement several common modules with a single platform module
• KT-21347 Add compiler warning about using kotlin-stdlib-jre7 or kotlin-stdlib-jre8 artifacts

Fixes

• KT-16424 Broken bytecode for nullable generic methods
• KT-17171 ClassCastException in case of SAM conversion with out variance
• KT-19399 Incorrect bytecode generated for inline functions in some complex cases
• KT-21696 Incorrect warning for use-site target on extension function
• KT-22031 Non-abstract expect classes should not have abstract members
• KT-22260 Never flag inline suspend fun with NOTHING_TO_INLINE
• KT-22352 Expect/actual checker can't handle properties and functions with the same name
• KT-22652 Interface with default overrides is not perceived as a SAM
• KT-22904 Incorrect bytecode generated for withIndex iteration on Array<Int>
• KT-22906 Invalid class name generated for lambda created from method reference in anonymous object
• KT-23044 Overriden public property with internal setter cannot be found in runtime
• KT-23104 Incorrect code generated for LHS of an intrinsified in operator in case of generic type substituted with Character
• KT-23309 Minor spelling errors in JVM internal error messages
• KT-22001 JS: compiler crashes on += with "complex" receiver
• KT-23239 JS: Default arguments for non-final member function support is missing for MPP
• KT-17091 Converting to SAM Java type appends non-deterministic hash to class name
• KT-21521 Compilation exception when trying to compile a suspend function with tailrec keyword
• KT-21605 Cross-inlined coroutine with captured outer receiver creates unverifiable code
• KT-21864 Expect-actual matcher doesn't consider generic upper bounds
• KT-21906 ACTUAL_MISSING is reported for actual constructor of non-actual class
• KT-21939 Improve ACTUAL_MISSING diagnostics message
• KT-22513 Flaky "JarURLConnection.getUseCaches" NPE during compilation when using compiler plugins

Libraries

• KT-11208 readLine() shouldn't use buffered reader

IDE

New Features

• KT-10368 Run Action for Kotlin Scratch Files
• KT-16892 Shortcut to navigate between header and impl
• KT-23005 Support prefix/suffix attributes for language injection in Kotlin with annotations and comments

Performance Improvements

• KT-19484 KotlinBinaryClassCache retains a lot of memory
• KT-23183 ConfigureKotlinNotification.getNotificationString() scans modules with Kotlin files twice
• KT-23380 Improve IDE performance when working with Spring projects

Fixes

• KT-15482 KotlinNullPointerException in IDE from expected class with nested class
• KT-15739 Internal visibility across common and platform-dependent modules
• KT-19025 Not imported build.gradle.kts is all red
• KT-19165 IntelliJ should suggest to reload Gradle projects when build.gradle.kts changes
• KT-20282 'Move statement up' works incorrectly for statement after finally block if try block contains closure
• KT-20521 Kotlin Gradle script: valid build.gradle.kts is red and becomes normal only after reopening the project
• KT-20592 KotlinNullPointerException: nested class inside expect / actual interface
• KT-21013 "Move statement up/down" fails for multiline declarations
• KT-21420 .gradle.kts editor should do no semantic highlighting until the first successful dependency resolver response
• KT-21683 Language injection: JPAQL. Injection should be present for "query" parameter of @NamedNativeQueries
• KT-21745 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Maven
• KT-21746 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Gradle
• KT-21753 Language injection: SpEL. Not injected for key in @Caching
• KT-21771 All annotations in Annotations.kt from kotlin-test-js module wrongly have ACTUAL_MISSING
• KT-21831 Opening class from kotlin-stdlib-jdk8.jar fails with EE: "Stub list in ... length differs from PSI"
• KT-22229 Kotlin local delegated property Import auto-removed with "Java: Optimize imports on the fly"
• KT-22724 ISE: "psiFile must not be null" at KotlinNodeJsRunConfigurationProducer.setupConfigurationFromContext()
• KT-22817 Hitting 'Propagate Parameters' in Change Signature throws UnsupportedOperationException
• KT-22851 Apply button is always active on Kotlin compiler settings tab
• KT-22858 Multiplatform: String constructor parameter is reported in Java file of jvm module on creation of a new instance of a class from common module
• KT-22865 Support multiple expectedBy dependencies when importing project from Gradle or Maven
• KT-22873 Common module-based light classes do not see JDK
• KT-22874 Exception on surround with "if else" when resulting if should be wrapped with ()
• KT-22925 Unable to view Type Hierarchy from constructor call in expression
• KT-22926 Confusing behavior of Type Hierarchy depending on the caret position at superclass constructor
• KT-23097 Enhance multiplatform project wizard
• KT-23271 Warn about using kotlin-stdlib-jre* libs in dependencyManagement section in Maven with eap and dev Kotlin versions
• KT-20672 IDE can't resolve references to elements from files with @JvmPackageName
• KT-23546 Variable name auto-completion popup gets in the way
• KT-23546 Do not show duplicated names in variables completion list
• KT-19120 Use script compiler options on script dependencies in the IDE as well

IDE. Gradle. Script

• KT-23228 Do not highlight .gradle.kts files in non-Gradle projects

IDE. Inspections and Intentions

New Features

• KT-16382 Intention to convert expr.unsafeCast<Type>() to expr as Type and vice versa
• KT-20439 Intentions to add/remove labeled return to last expression in a lambda
• KT-22011 Inspection to report the usage of Java Collections methods on immutable Kotlin Collections
• KT-22933 Intention/inspection to convert Pair constructor to to function
• KT-19871 Intentions for specifying use-site targets for an annotation
• KT-22971 Inspection to highlight and remove unnecessary explicit companion object references

Fixes

• KT-12226 "Convert concatenation to template" does not process $ sign as a Char
• KT-15858 "Replace with a foreach function call" intention breaks code
• KT-16332 Add braces to 'if' statement intention does not put end-of-line comment properly into braces
• KT-17058 "Create implementations from headers": each implementation gets own file
• KT-17306 Don't report package name mismatch if there's no Java code in the module
• KT-19730 Quickfix for delegated properties boilerplate generation doesn't work on locals
• KT-21005 "Missing KDoc inspection" is broken
• KT-21082 "Create actual declaration" of top-level subclass of expected sealed class in the same file as actual declaration of sealed class present
• KT-22110 "Can be joined with assignment" inspection underlining extends into comment
• KT-22329 "Create class" quickfix is not suggested in when branch
• KT-22428 Create member function from usage shouldn't present type parameters as options
• KT-22492 "Specify explicit lambda signature" intention is available only on lambda braces
• KT-22719 Incorrect warning 'Redundant semicolon' when having method call before lambda expression
• KT-22861 "Add annotation target" quickfix is not available on annotation with use site target
• KT-22862 "Add annotation target" quickfix does not process existent annotations with use site target
• KT-22917 Update order of containers for create class quickfix
• KT-22949 NPE on conversion of run/apply with explicit lambda signature to let/also
• KT-22950 Convert stdlib extension function to scoping function works incorrectly in case of explicit lambda signature
• KT-22954 "Sort modifiers" quickfix works incorrectly when method is annotated
• KT-22970 Add explicit this intention/inspection missing for lambda invocation
• KT-23109 "Remove redundant 'if' statement" inspection breaks code with labeled return
• KT-23215 "Add function to supertype" quickfix works incorrectly
• KT-14270 Intentions "Add/Remove braces" should be applied to the statement where caret is if there several nested statements one into another
• KT-21743 Method reference not correctly moved into parentheses
• KT-23045 AE “Failed to create expression from text” on concatenating string with broken quote mark char literal
• KT-23046 CCE ”KtBinaryExpression cannot be cast to KtStringTemplateExpression” on concatenating broken quote mark char literal with string
• KT-23227 "Add annotation target" quickfix is not suggested for field: use-site target

IDE. Refactorings

Fixes

• KT-13255 Refactor / Rename: renaming local variable or class to existing name gives no warning
• KT-13284 Refactor / Rename: superfluous imports and FQNs in Java using @JvmOverloads functions
• KT-13907 Rename refactoring warns about name conflict if there is function with different signature but the same name
• KT-13986 Full qualified names of classes in comments should be changed after class Move, if comment contains backquotes
• KT-14671 typealias: refactor/rename should propose to rename occurrences in comments
• KT-15039 Extra usage is found for a parameter in data class in destructuring construction
• KT-15228 Extract function from inline function should create public function
• KT-15302 Reference to typealias in SAM conversion is not found
• KT-16510 Can't rename quoted identifier is
• KT-17827 Refactor / Move corrupts bound references when containing class of member element is changed
• KT-19561 Name conflict warning when renaming method to a name matching an extension method with the same name exists
• KT-20178 Refactor → Rename can't make companion object name empty
• KT-22282 Moving a Kotlin file to another package does not change imports in itself
• KT-22482 Rename refactoring insert qualifier for non related property call
• KT-22661 Refactor/Move: top level field reference is not imported automatically after move to the source root
• KT-22678 Refactor / Copy: "Class uses constructor which will be inaccessible after move" when derived class has a protected constructor
• KT-22692 Refactor/Move: unnecessary curly braces added on moving to a separate file a top level function with a top level field usage
• KT-22745 Refactor/Move inserts FQ function name at the call site if there is a field same named as the function
• KT-22747 Moving top-level function to a different (existing) file doesn't update references from Java
• KT-22751 Refactor/Rename: type alias name clash is not reported
• KT-22769 Refactor/Move: there is no warning on moving sealed class or its inheritors to another file
• KT-22771 Refactor/Move: there is no warning on moving nested class to another class with stricter visibility
• KT-22812 Refactor/Rename extension functions incorrectly conflicts with other extension functions
• KT-23065 Refactor/Move: Specify the warning message on moving sealed class inheritors without moving the sealed class itself

IDE. Script

• KT-22647 Run script Action in IDE should use Kotlin compiler from the IDE plugin
• KT-18930 IDEA is unstable With Gradle Kotlin DSL
• KT-21042 Gradle Script Kotlin project is full-red
• KT-11618 Running .kts file from IntelliJ IDEA doesn't allow to import classes in other files which are also part of the project

IDE. Debugger

• KT-22205 Breakpoints won't work for Kotlin testing with JUnit

JavaScript

• KT-22019 Fix wrong list sorting order

Tools. CLI

• KT-22777 Unstable language version setting has no effect when attached runtime has lower version

Tools. Gradle

• KT-22824 expectedBy dependency should be expressed as compile dependency in POM
• KT-15371 Multiplatform: setting free compiler args can break build
• KT-22864 Allow multiple expectedBy configuration dependencies in Gradle
• KT-22895 'kotlin-runtime' library is missing in the compiler classpath sometimes
• KT-23085 Use proper names for the Gradle task inputs/outputs added at runtime
• KT-23694 Fix parallel build in Kotlin IC – invalid KotlinCoreEnvironment disposal

Tools. Android

• Android Extensions: Support fragments from kotlinx package;

Tools. Incremental Compile

• KT-20516 "Unresolved reference" when project declares same class as its dependency
• KT-22542 "Source file or directory not found" for incremental compilation with Kobalt
• KT-23165 Incremental compilation is sometimes broken after moving one class

Tools. JPS

• KT-16091 Incremental compilation ignores changes in Java static field
• KT-22995 EA-91869 - NA: LookupStorage.<init>

Tools. kapt

• KT-21735 Kapt cache was not cleared sometimes

Tools. REPL

• KT-21611 REPL: Empty lines should be ignored

1.2.30

Android

• KT-19300 [AS3.0] Android extensions, Parcelable: editor shows warning about incomplete implementation on a class with Parcelize annotation
• KT-22168 "Kotlin Android | Illegal Android Identifier" inspection reports non-instrumentation unit tests
• KT-22700 Android Extensions bind views with dot in ID

Compiler

New Features

• KT-17336 Introduce suspendCoroutineUninterceptedOrReturn coroutine intrinsic function
• KT-22766 Imitate "suspend" modifier in 1.2.x by stdlib function

Performance Improvements

• KT-16880 Smarter detection of tail-suspending unit invocations

Fixes

• KT-10494 IAE in CheckMethodAdapter.checkInternalName when declaring classes inside method with non-standard name
• KT-16079 Internal error when using suspend operator plus
• KT-18522 Internal compiler error with IndexOutOfBoundsException, "Exception while analyzing expression"
• KT-18578 Compilation failure with @JsonInclude and default interface method
• KT-19786 Kotlin — unable to override a Java function with @Nullable vararg argument
• KT-20466 JSR305 false positive for elvis operator
• KT-20705 Tail suspend call optimization doesn't work in when block
• KT-20708 Tail suspend call optiomization doesn't work in some branches
• KT-20855 Unnecessary safe-call reported on nullable type
• KT-21165 Exception from suspending function is not caught
• KT-21238 Nonsensical warning "Expected type does not accept nulls in Java, but the value may be null in Kotlin"
• KT-21258 Raw backing field value exposed via accessors?
• KT-21303 Running on JDK-10-ea-31 leads to ArrayIndexOutOfBoundsException
• KT-21642 Back-end (JVM) Internal error: Couldn't transform method node on using open keyword with suspend for a top-level function
• KT-21759 Compiler crashes on two subsequent return statements in suspend function
• KT-22029 Fold list to pair with destructuring assignment and inner when results in Exception
• KT-22345 OOM in ReturnUnitMethodReplacer
• KT-22410 invalid compiler optimization for nullable cast to reified type
• KT-22577 Compiler crashes when coroutineContext is used inside of inlined lambda

IDE

New Features

• KT-8352 Pasting Kotlin code into package could create .kt file
• KT-16710 Run configuration to run main() as a Node CLI app
• KT-16833 Allow mixing Java and Kotlin code in "Analyze Data Flow..."
• KT-21531 JS: add support for running specific test from the gutter icon with Jest testing framework

Performance Improvements

• KT-21450 Add caching for Module.languageVersionSettings
• KT-21517 OOME during find usages

Fixes

• KT-7316 Go to declaration in Kotlin JavaScript project navigates to JDK source in some cases
• KT-8563 Refactor / Rename inserts line breaks without reason
• KT-11467 Editor: var property in primary constructor is shown not underscored, same as val
• KT-13509 Don't show run line markers for top-level functions annotated with @Test
• KT-13971 Kotlin Bytecode tool window: Decompile is available for incompilable code, CE at MemberCodegen.genFunctionOrProperty()
• KT-15000 Do not spell check overridden declaration names
• KT-15331 "Kotlin not configured" notification always shown for common module in multiplatform project
• KT-16333 Cannot navigate to super declaration via shortcut
• KT-16976 Introduce special SDK for Kotlin JS projects to avoid using JDK
• KT-18445 multiplatform project: provide more comfortable way to process cases when there are missed method implemenation in the implementation class
• KT-19194 Some Live Templates should probably be enabled also for "expressions" not only "statements"
• KT-20281 multiplatform:Unresolved service JavaDescriptorResolver on a file with several header declarations and gutters not shown
• KT-20470 IntelliJ indent guide/invisible brace matching hint tooltip doesn't show context
• KT-20522 Add "Build" action in "Before launch" block when create new JS run configuration (for test)
• KT-20915 Add quickfix for ‘Implicit (unsafe) cast from dynamic type’
• KT-20971 Cannot navigate to sources of compiled common dependency
• KT-21115 Incomplete actual class should still have navigation icon to expect class
• KT-21688 UIdentifier violates JvmDeclarationElement contract
• KT-21874 Unexpected IDE error "Unknown type [typealias ...]"
• KT-21958 Support "Alternative source available" for Kotlin files
• KT-21994 Collapsed comments containing * get removed in the summary line.
• KT-22179 For properties overridden in object literals, navigation to inherited properties is missing indication of a type they are overridden
• KT-22214 Front-end Internal error: Failed to analyze declaration
• KT-22230 Reformatting code to Kotlin style indents top-level typealiases with comments
• KT-22242 Semantic highlighting uses different colors for the same 'it' variable and same color for different 'it's
• KT-22301 Don't require space after label for lambda
• KT-22346 Incorrect indentation for chained context extension functions (lambdas) when using Kotlin style guide
• KT-22356 Update status of inspection "Kotlin JVM compiler configured but no stdlib dependency" after pom file update, not on re-import
• KT-22360 MPP: with "Create separate module per source set" = No expectedBy dependency is imported not transitively
• KT-22374 "Join lines" works incorrectly in case of line containing more than one string literal
• KT-22473 Regression in IntelliJ Kotlin Plugin 1.2.20, settings.gradle.kts script template is wrong
• KT-22508 Auto-formatting should insert an indentation for default parameter values
• KT-22514 IDE Freeze related to IdeAllOpenDeclarationAttributeAltererExtension.getAnnotationFqNames()
• KT-22557 Dead 'Apply' button, when setting code style
• KT-22565 Cant do PsiAnchor.create on annotation in annotation
• KT-22570 Can't add import in "Packages to Use Import with '*'" section on "Import" tab in Code Style -> Kotlin
• KT-22593 AE when invoking find usages on constructor in decompiled java file
• KT-22641 Auto-formatting adds extra indent to a closing square bracket on a separate line
• KT-22734 LinkageError: "loader constraint violation: when resolving method PsiTreeUtilKt.parentOfType()" at KotlinConverter.convertPsiElement$uast_kotlin()

IDE. Debugger

• KT-20351 Stepping over a line with two inline stdlib functions steps into the second function
• KT-21312 Confusing Kotlin (JavaScript) run configuration
• KT-21945 Double stop on same line during step over if inline call is present
• KT-22967 Debugger: Evaluator fails on evaluating huge lambdas on Android

IDE. Inspections and Intentions

New Features

• KT-18124 Inspection to get rid of unnecessary ticks in references
• KT-22038 Inspection to replace the usage of Java Collections methods on subtypes of MutableList with the methods from Kotlin stdlib
• KT-22152 "Create Class" quickfix should support creating the class in a new file and selecting the package for that file
• KT-22171 Add Intention for single character substring
• KT-22303 Inspection to detect Type!.inlineWithNotNullReceiver() calls
• KT-22409 Intention for changing property setter accessibility

Performance Improvements

• KT-21137 Kotlin instantiates something expensive via reflection when highlighting Java file

Fixes

• KT-15176 Remove "Create type alias" intention when called on java class
• KT-18007 Inspection doesn't suggest Maven Plugin for kotlin-stdlib-jre8
• KT-18308 'Remove braces from else statement' intention breaks code
• KT-18912 multiplatform project: Convert to enum class: header sealed class cannot convert nested objects to enum values
• KT-21114 IOE: create actual members for expected with companion
• KT-21600 suspend modifier should go after override in overridden suspend functions
• KT-21881 Replace "If" with safe access intention false positive
• KT-22054 Replace '!=' with 'contentEquals' should be replace '==' with 'contentEquals'
• KT-22097 Redundant Unit inspection false positive for single expression function
• KT-22159 "Replace return with 'if' expression" should not place return before expressions of type Nothing
• KT-22167 "Add annotation target" quick fix does nothing and disappears from menu
• KT-22221 QuickFix to remove unused constructor parameters shouldn't delete parenthesis
• KT-22335 IOE from KotlinUnusedImportInspection.scheduleOptimizeImportsOnTheFly
• KT-22339 Remove setter parameter type: error while creating problem descriptor
• KT-22364 Redundant setter is not reported for overridden fields
• KT-22484 The warning highlight for redundant !ischeck for object types isn't extended to the full operator
• KT-22538 "Redundant type checks for object" inspection application breaks smart cast for an object's field or function

IDE. Refactorings

New Features

• KT-17047 Refactorings for related standard "scoping functions" conversion: 'let' <-> 'run', 'apply' <-> 'also'

Fixes

• KT-12365 Renaming invoke function should remove operator modifier and insert function call for implicit usages
• KT-17977 Move class to upper level creates file with wrong file name
• KT-21719 Actual typealias not renamed on expected declaration rename
• KT-22200 Overriden function generated from completion is missing suspend modifier
• KT-22359 Refactor / Rename file: Throwable at RenameProcessor.performRefactoring()
• KT-22461 Rename doesn't work on private top-level members of multi-file parts
• KT-22476 Rename it parameter fails after replacing for-each with mapNotNull
• KT-22564 Rename doesn't warn for conflicts
• KT-22705 Refactor/Rename: rename of invoke function with lambda parameter to get breaks an implicit call
• KT-22708 Refactor/Rename function using some stdlib name leads to incompilable code

JavaScript

• KT-20735 JS: kotlin.test-js integration tests terminate build on failure
• KT-22638 Function reference not working in js from extension
• KT-22963 KotlinJS - When statement can cause illegal break

Libraries

• KT-22620 Add support for TestNG in kotlin.test
• KT-16661 Performance overhead in string splitting in Kotlin versus Java?
• KT-22042 Suboptimal Strings#findAnyOf
• KT-21154 kotlin-test-junit doesn't provide JUnitAsserter when test body is run in another thread

Tools

• KT-22196 kotlin-compiler-embeddable bundles outdated kotlinx.coroutines since 1.1.60
• KT-22549 Service is dying during compilation

Tools. CLI

• KT-19051 Suppress Java 9 illegal access warnings

Tools. Gradle

• KT-18462 Add 'org.jetbrains.kotlin.platform.android' plugin.
• KT-18821 Gradle plugin should not resolve dependencies at configuration time

Tools. Maven

• KT-21581 kotlin.compiler.incremental not copying resources

Tools. Incremental Compile

• KT-22192 Make precise java classes tracking in Gradle enabled by default

Tools. J2K

• KT-21635 J2K: create "inspection based post-processing"

Tools. REPL

• KT-12037 REPL crashes when trying to :load with incorrect filename

Tools. kapt

• KT-22350 kdoc comment preceding enum method causes compilation failure
• KT-22386 kapt3 fails when project has class named System
• KT-22468 Kapt fails to convert array type to anonymous array element type
• KT-22469 Kapt 1.2.20+ may fail to process classes with KDoc
• KT-22493 Kapt: NoSuchElementException in KotlinCliJavaFileManagerImpl if class first character is dollar sign
• KT-22582 Kapt: Enums inside enum values should be forbidden
• KT-22711 Deprecate original kapt (aka kapt1)

1.2.21

Fixes

• KT-22349 Android: creating new Basic activity fails with Throwable: "Inconsistent FILE tree in SingleRootFileViewProvider" at SingleRootFileViewProvider.checkLengthConsistency()
• KT-22459 Remove .proto files from kotlin-reflect.jar

1.2.20

Android

• KT-20085 Android Extensions: ClassCastException after changing type of view in layout XML
• KT-20235 Error, can't use plugin kotlin-android-extensions
• KT-20269 Mark 'kapt.kotlin.generated' as a source root automatically in Android projects
• KT-20545 Parcelable: Migrate to canonical NEW-DUP-INVOKESPECIAL form
• KT-20742 @Serializable and @Parcelize do not work together
• KT-20928 @Parcelize. Verify Error for Android Api 19

Binary Metadata

• KT-11586 Support class literal annotation arguments in AnnotationSerializer

Compiler

New Features

• KT-17944 Allow 'expect' final member be implemented by 'actual' open member
• KT-21982 Recognize Checker Framework declaration annotations
• KT-17609 Intrinsic suspend val coroutineContext

Performance Improvements

• KT-21322 for-in-char-sequence loop improvements
• KT-21323 Decreasing range loop improvements

Fixes

• KT-4174 Verify error on lambda with closure in local class super call
• KT-10473 Inapplicable diagnostics for mixed JS / JVM projects
• KT-12541 VerifyError: Bad type on operand stack for local variable captured in local class
• KT-13454 VerifyError on capture of outer class properties in closure inside inner class constructor
• KT-14148 VerifyError: Bad type on operand stack for anonymous type inheriting inner class
• KT-18254 enumValueOf and enumValues throw UnsupportedOperationException when used within a non-inline function block
• KT-18514 IllegalStateException on compile object that inherits its inner interface or class
• KT-18639 VerifyError: Bad type on operand stack
• KT-19188 Nondeterministic method order in class files using DefaultImpls
• KT-19827 Strange VerifyError in simple Example
• KT-19928 Analyze / Inspect Code: ISE "Concrete fake override public final fun ()" at BridgesKt.findConcreteSuperDeclaration()
• KT-20433 NPE during JVM code generation
• KT-20639 Obsolete term "native" used in error message
• KT-20802 USELESS_CAST diagnostic in functions with expression body
• KT-20873 False CAST_NEVER_SUCCEEDS when upcasting Nothing
• KT-20903 Method reference to expect function results in bogus resolution ambiguity
• KT-21105 Compiler incorrectly optimize the operator in with a floating point type range with NaN bound.
• KT-21146 ArrayIndexOutOfBoundsException at org.jetbrains.kotlin.codegen.MemberCodegen.generateMethodCallTo(MemberCodegen.java:841)
• KT-21267 Report pre-release errors if pre-release compiler is run with a release language version
• KT-21321 for-in-array loop improvements
• KT-21343 Compound assignment operator compiles incorrectly when LHS is a property imported from object
• KT-21354 Inconsistent behavior of 'for-in-range' loop if range is an array variable modified in loop body
• KT-21532 Enum constructor not found
• KT-21535 SAM wrapper is not created for a value of functional type in delegating or super constructor call in secondary constructor
• KT-21671 Inline sam wrapper during inline in another module
• KT-21919 Invalid MethodParameters attribute generated for "$DefaultImpls" synthetic class with javaParameters=true
• KT-20429 False-positive 'Unused return value of a function with lambda expression body' in enum constant constructor
• KT-21827 SMAP problem during default lambda parameter inline

IDE

New Features

• KT-4001 Allow to set arguments indent to 1 tab (currently two and not customized)
• KT-13378 Provide ability to configure highlighting for !! in expressions and ? in types
• KT-17928 Support code folding for primary constructors
• KT-20591 Show @StringRes/@IntegerRes annotations in parameter info
• KT-20952 "Navigate | Related symbol" should support expect/actual navigation
• KT-21229 Make it possible to explicitly select "latest" language/API version
• KT-21469 Wrap property initializers after equals sign
• KT-14670 Support kotlinPackageName() macro in live templates
• KT-14951 Editor: navigate actions could be available in intention menu (as done in Java)
• KT-15320 Live templates: Add function which returns the "outer" class name
• KT-20067 Return label hints
• KT-20533 Show "this" and "it" type hints in lambdas.
• KT-20614 Change location of initial parameter type hint when parameters are on multiple lines
• KT-21949 Please add a separate Color Scheme settings for properties synthesized from Java accessors
• KT-21974 Editor color scheme option for Kotlin typealias names

Performance Improvements

• KT-17367 Rebuild requested for index KotlinJavaScriptMetaFileIndex
• KT-21632 Freezing on typing
• KT-21701 IDEA 2017.3 high CPU usage

Fixes

• KT-9562 Wrong indent after Enter after an annotation
• KT-12176 Formatter could reformat long primary constructors
• KT-12862 Formatting: Weird wrapping setting for long ?: operator
• KT-15099 Odd code formatting when chaining lambdas and splitting lines on operators
• KT-15254 Use Platform icons for "Run" icon in gutter
• KT-17254 Remove obsolete unfold-icons in structure view
• KT-17838 Can't report exceptions from the Kotlin plugin 1.1.4-dev-119 in IDEA #IU-171.4424.37
• KT-17843 Don't show parameter name hints when calling Java methods with unknown parameter names
• KT-17964 Local variable type hints in editor for anonymous object
• KT-17965 Do not shown argument name hints for assert
• KT-18829 Do not show parameter name hints for mapOf
• KT-18839 Semantic highlighting not work for local variables in init
• KT-19012 Data Flow from here: doesn't find template usages
• KT-19017 Data Flow from here doesn't find usage in range position of for cycle
• KT-19018 Data Flow from here doesn't find any usages of for-variable
• KT-19036 Data Flow from here: please find calls of extension too
• KT-19039 Data Flow from here: please find cases when an investigated variable is transferred as a parameter into a library function
• KT-19087 Data flow to here: usages with explicit receiver are not found
• KT-19089 Data Flow to here: assigned values are not found if an investigated property is a delegated one
• KT-19104 Data Flow from here: usage of parameter or variable not found when used as lambda receiver/parameter
• KT-19106 Data Flow from here: show point of call of a function used as a parameter investigated parameter/variable
• KT-19112 Data Flow to here for a function (or its return value) doesn't find shorten forms of assignments
• KT-19519 Structure view is not updated properly for function classes
• KT-19727 Code style: New line after '(' with anonymous object or multi-line lambda unexpected behavior
• KT-19820 Strange highlightning for enum constructor
• KT-19823 Kotlin Gradle project import into IntelliJ: import kapt generated classes into classpath
• KT-19824 Please provide a separate icon for a common library
• KT-19915 TODO calls not blue highlighted in lambdas/DSLs
• KT-20096 Kotlin Gradle script: SOE after beginning of Pair definition before some script section
• KT-20314 Kotlin formatter does not respect annotations code style settings
• KT-20329 Multiplatform: gutter "Is subclassed by" should show expect subclass from the common module
• KT-20380 Configure Kotlin plugin updates dialog does not open without opened project
• KT-20521 Kotlin Gradle script: valid build.gradle.kts is red and becomes normal only after reopening the project
• KT-20603 Facet import: when API version > language version, set API version = language version, not to 1.0
• KT-20782 Non-atomic trees update
• KT-20813 SAM with receiver: call with SAM usage is compiled with Gradle, but not with JPS
• KT-20880 Add documentation quick fix should create multiline comment and place caret in right place
• KT-20883 Provide more information in "Missing documentation" inspection message
• KT-20884 Functions with receivers should allow [this] in KDoc
• KT-20937 Exception thrown on RMB click on folder in Kotlin project
• KT-20938 IDE: kotlinc.xml with KotlinCommonCompilerArguments/freeArgs: XSE: "Cannot deserialize class CommonCompilerArguments$DummyImpl" at BaseKotlinCompilerSettings.loadState()
• KT-20953 "Choose actual" popup shows redundant information
• KT-20985 Additional reimport is required in 2017.3/2018.1 idea after creating or importing mp project
• KT-20987 (PerModulePackageCache miss) ISE: diagnoseMissingPackageFragment
• KT-21002 "Highlight usages of identifier under caret" should work for "it"
• KT-21076 Recursive Companion.ivoke() call should be marked with according icon
• KT-21132 containsKey() in SoftValueMap considered pointless
• KT-21150 Do not infer compiler version from build.txt
• KT-21200 Improve Structure-view for Kotlin files
• KT-21214 Fix funcion selection in kotlin
• KT-21275 Don't show argument name hints in calls of methods on 'dynamic' type
• KT-21318 Highlighting of function exit points does not work if the function is a getter for property
• KT-21363 IDE: kotlinc.xml with KotlinCommonCompilerArguments: build fails with UOE: "Operation is not supported for read-only collection" at EmptyList.clear()
• KT-21409 UAST: Super-call arguments are not modeled/visited
• KT-21418 Gradle based project in IDEA 181: Kotlin facets are not created
• KT-21441 Folding multiline strings adds a space at the start if there is not one.
• KT-21546 java.lang.IllegalArgumentException: Unexpected container fatal IDE error
• KT-21575 Secondary constructor call body is missing
• KT-21645 Weird parameter hint position
• KT-21733 Structure view is not updated
• KT-21756 Find Usages for "type" in ts2kt provokes exception
• KT-21770 Pasting this into an interpolated string shouldn't escape
• KT-21833 Type hints shown when destructing triple with type parameters
• KT-21852 Custom API version is lost when settings are reopen after restarting IDE
• KT-11503 cmd+shift+enter action in .kt files does not work on empty lines
• KT-17217 Navigate to symbol: hard to choose between a lot of extension overloads
• KT-18674 Join Lines should join strings
• KT-19524 "Local variable type hints" should respect static imports
• KT-21010 Gutter "Is subclassed by" should show actual subclass from the all platform modules in IDEA 2017.3/2018.1
• KT-21036 Throwable “Access is allowed from event dispatch thread only.” after creating nine similar classes with functions.
• KT-21213 Multiline kdoc - intellij joins lines together without space
• KT-21592 -Xjsr305=strict not taken into account during the kotlin files compilation in Idea (maven)
• KT-22050 Redundant parameter type hint on SAM
• KT-22071 Formatter insists on increasing indentation in forEach lambda
• KT-22093 Unnecessary line wrap with new Kotlin code style
• KT-22111 Error while indexing PsiPlainTextFileImpl cannot be cast to KtFile
• KT-22121 Enter in empty argument list should apply normal indent if "Continuation indent for argument list" is off
• KT-21702 KtLightAnnotation can't be converted to UAST
• KT-19900 IntelliJ does not recognise no-arg "invokeInitializers" set in pom.xml

IDE. Completion

• KT-13220 Completion for non-primary-constructor properties should suggest names with types instead of types
• KT-12797 Code completion does not work for inner in base class
• KT-16402 AssertionError on completing expression after template in string literal
• KT-20166 Completion: property declaration completion should be greedy if tab pressed
• KT-20506 Second smart completion suggests the same value recursively

IDE. Debugger

• KT-17514 Debugger, evaluate value: cannot find local variable error on attempt to evaluate outer variable
• KT-20962 NullPointerException because of nullable location in debugger
• KT-21538 "Step into" method doesn't work after adding lambda parameter to the call
• KT-21820 Debugger: Evaluation fails for instance properties (older Android SDKs)

IDE. Inspections and Intentions

New Features

• KT-4580 Intention + inspection to convert between explicit and implicit 'this'
• KT-11023 Inspection to highlight usages of Collections.sort() and replace them with .sort() method from Kotlin stdlib
• KT-13702 Issue a warning when equals is called recursively within itself
• KT-18449 Multiplatform project: provide a quick fix "Implement methods" for a impl class
• KT-18828 Provide an intention action to move a companion object member to top level
• KT-19103 Inspection to remove unnecessary suspend modifier
• KT-20484 Add quick fix to add required target to annotation used on a type
• KT-20492 Offer "Simplify" intention for 'when' expression where only one branch is known to be true
• KT-20615 Inspection to detect usages of values incorrectly marked by Kotlin as const from Java code
• KT-20631 Inspection to detect use of Unit as a standalone expression
• KT-20644 Warning for missing const paired with val modifier for primitives and strings
• KT-20714 Inspection for self-assigment of properties
• KT-21023 Inspection to highlight variables / functions with implicit Nothing? type
• KT-21510 Add inspection to add/remove this to/from bound callable
• KT-21560 Inspection to sort modifiers
• KT-21573 Code Style Inspection: to -> Pair function used not in infix form
• KT-16260 Add intention to specify all types explicitly in destructuring assignment
• KT-21547 Allow separate regex for test class and function names in IDE inspection
• KT-21741 Inspection to detect is checks for object types
• KT-21950 Enable quick-fixes for annotator-reported problems in "Inspect Code"
• KT-22103 SortModifiersInspection should report annotations after modifiers

Fixes

• KT-15941 "Convert to secondary constructor" produces invalid code for generic property with default value
• KT-16340 "Unused receiver parameter" for invoke operator on companion object
• KT-17161 IDE suggest to replace a for loop with forEach to aggresively
• KT-17332 Intention to replace forEach with a 'for' loop should convert return@forEach to continue
• KT-17730 Incorrect suggestion to replace loop with negation to any{}
• KT-18816 IDEA suggests replacing for-in-range with stdlib operations
• KT-18881 Invalid "Loop can be replaced with stdlib operations" warning when class has add() function
• KT-19560 Do not warn about receiver parameter not used for companion object
• KT-19977 Convert Lambda to reference produces red code when wrong implicit receiver is in scope
• KT-20091 "Convert object literal to class" should create inner class if necessary
• KT-20300 "Variable can be inlined" should not be suggested if there's a variable with the same name in nested scope
• KT-20349 Convert lambda to reference for trailing lambda inserts parameter names for all arguments if at least one named argument was passed
• KT-20435 False "function is never used" warning
• KT-20622 Don't propose “Remove explicit type specification” when it can change semantic?
• KT-20763 Wrong resulting code for "add star projection" quick-fix for inner class with generic outer one
• KT-20887 Missing documentation warning shouldn't be triggered for a member of a private class
• KT-20888 Documentation should be inherited from Map.Entry type
• KT-20889 Members of anonymous objects should be treated as private and not trigger "Missing documentation" warning
• KT-20894 "Add type" quick fix does not take into account vararg modifier
• KT-20901 IntelliJ autocorrect to add parameter to data class constructor should make the parameter a val
• KT-20981 False positive for "redundant super" in data class
• KT-21025 Kotlin UAST violates JvmDeclarationUElement contract by employing JavaUAnnotation
• KT-21061 Cant work with UElement.kt in IDEA with 1.2.0-rc-39: "Stub index points to a file without PSI"
• KT-21104 Do not propose to make local lateinit var immutable
• KT-21122 QuickFix to create member for expect class shouldn't add body
• KT-21159 Fix signature invoked from Java breaks Kotlin code
• KT-21179 Remove empty class body on companion object breaks code
• KT-21192 Confusing "unused expression"
• KT-21237 ReplaceWith incorrectly removes property assignment
• KT-21332 Create from usage: do not propose to create abstract function in non-abstract class
• KT-21373 'Remove redundant let' quickfix does not work with in
• KT-21497 Inspection considers if block to be a lambda
• KT-21544 "Add type" quick fix incorrectly processes vararg modifier with primitive type array initializer
• KT-21603 "Join declaration and assignment" should remove 'lateinit' for 'var'
• KT-21612 The "Remove redundant getter" inspection removes the type specifier
• KT-21698 Create interface shouldn't suggest to declare it inside a class which implements it
• KT-21726 "arrayOf can be replaced with literal" inspection quick fix produces incompilable result in presence of spread operator
• KT-21727 "Redundant spread operator" inspection does not report array literal
• KT-12814 Specify type explicitly produces erroneous code when platform type overrides not-null type
• KT-15180 Incorrect quickfix 'Specify type explicitly'
• KT-17816 "Replace elvis with if" produce nasty code when safe casts are involved
• KT-18396 Bad quickfix for wrong nested classes in inner class
• KT-19073 No-op quick fix for "Convert lambda to reference" IDE suggestion
• KT-19283 Kotlin KProperty reference cannot be converted to lambda
• KT-19736 Rephrase text in the unconventional property name inspection
• KT-19771 Preserve old "Convert to expression body" range
• KT-20437 Naming convetions inspection: Add separate inspection for top-level and object properties
• KT-20620 Replace operator with function call breaks code
• KT-21414 OverridersSearch attempts to create nameless fake light method
• KT-21780 Wrong redundant setter inspection
• KT-21837 Don't require documentation on tests and test classes
• KT-21929 Inappropriate quick fix for a sealed class instantiation
• KT-21983 Do not suggest to remove explicit Unit type for expression body
• KT-16619 Incorrect 'accessing non-final property in constructor' warning

IDE. Refactorings

New Features

• KT-20095 Allow conversion of selected companion methods to methods with @JvmStatic

Fixes

• KT-15840 Introduce type alias: don't change not-nullable type with nullable typealias
• KT-17212 Refactor / Inline Function: with 1 occurrence both "Inline all" and "Inline this only" are suggested
• KT-18594 Refactor / Extract (Functional) Parameter are available for annotation arguments, but fail with AE: "Body element is not found"
• KT-20146 IAE “parameter 'name' of NameUtil.splitNameIntoWords must not be null” at renaming class
• KT-20335 Refactor → Extract Type Parameter: “AWT events are not allowed inside write action” after processing duplicates
• KT-20402 Throwable “PsiElement(IDENTIFIER) by KotlinInplaceParameterIntroducer” on calling Refactor → Extract Parameter for default values
• KT-20403 AE “Body element is not found” on calling Refactor → Extract Parameter for default values in constructor of class without body
• KT-20790 Refactoring extension function/property overagressive
• KT-20766 Typealias end-of-line is removed when moving function and typealias to new file
• KT-21071 Cannot invoke move refactoring on a typealias
• KT-21162 Adding parameters to kotlin data class leads to compilation error
• KT-21288 Change Signature refactoring fails to change signature of overriders
• KT-21334 Extract variable doesn't take into account the receiver of a bound callable reference
• KT-21371 Rename refactoring sometimes erases identifier being renamed when popping up name proposals
• KT-21530 KNPE in introduce variable
• KT-21508 java.lang.AssertionError: PsiLiteralExpression on property safe delete in Idea 173
• KT-21536 Rename refactoring sometimes doesn't quite work
• KT-21604 Rename package missing title
• KT-21963 Refactor / Inline Property: "null" in place of number of occurrences of local variable references
• KT-21964 Refactor / Inline: on declaration of element with one usage "Inline and keep" choice is not suggested
• KT-21965 Refactor / Inline: wording in dialog could be unified

JavaScript

New Features

• KT-20210 [JS] Ultra-fast builds for development

Performance Improvements

• KT-2218 JS: Optimise in checks for number ranges
• KT-20932 JS: Make withIndex() on arrays intrinsic
• KT-21160 JS: generate switch statement for when statement when possible

Fixes

• KT-7653 JS: TypeError when try to access to "simple" property (w/o backing field at runtime)
• KT-18963 javascript project: No output directory found for Module 'xxx_test' production on JPS compiling
• KT-19290 JS integer overflow for unaryMinus
• KT-19826 JS: don't remove debugger statement from suspend functions
• KT-20580 JS: JSON.stringify could improve 'replacer' argument handling
• KT-20694 JS: add missed parts to JS Date
• KT-20737 JS: cache KProperty instances that used to access to delegated property
• KT-20738 JS: remove useless calls to constructor of KProperty* (PropertyMetadata) when it generated for access to delegated property
• KT-20854 val parameters of type kotlin.Char aren't boxed
• KT-20898 JS: inline js with for without initializer causes compiiler to crash
• KT-20905 JS: compiler crashes on invalid inline JavaScript code instead of reporting error
• KT-20908 JS frontend crashes on uncompleted call to function with reified parameters
• KT-20978 JS: inline doesn't work for Array's constructor when it called through typealias
• KT-20994 JS extension property in interface problem
• KT-21004 JS: don't use short-circuit operators when translating Boolean.and/or(Boolean)
• KT-21026 JS: wrong code generated for suspend fun that calls inline suspend fun as a tail call.
• KT-21041 'TypeError: ... is not a function' for lambda with closure passed as an argument to super type constructor
• KT-21043 JS: inlining coroutine from other module sometimes causes incorrect code generated
• KT-21093 Kotlin.JS doesnt escape ‘in’ identifier and conflicts with in keyword
• KT-21245 JS: interface function with default parameter, overridden by other interface indirectly cannot be found at runtime
• KT-21307 JS DCE does not remap paths to sources
• KT-21309 JS: incorrect source map generated for inline lambda when it's last expression is a statement-like expression (e.g. when or try/catch)
• KT-21317 JS: safe call to suspend function returning Unit causes incorrect
• KT-21421 JS: accesors of overridden char properties with backing fields aren't boxed
• KT-21468 JS: don't use enum entry's name for when over external enums
• KT-21850 JS: support nested tests

Language design

• KT-10532 ISE by ThrowingLexicalScope at compile time with specific override chain

Libraries

• KT-20864 Provide ReadOnly and Mutable annotations to control java collection mutability in kotlin
• KT-18789 Delegating val to out-projected MutableMap resulted in NPE due to cast to Nothing
• KT-21828 JS: The List produced by the IntArray.asList function caused weird results
• KT-21868 Eliminate potential data race in SafePublicationLazyImpl
• KT-21918 Make toTypedArray() implementation more efficient and thread-safe
• KT-22003 JS: Replace Regex constructor-like functions with secondary constructors
• JS: Volatile and Synchornized annotations are moved to kotlin.jvm package with the migration type aliases provided
• KT-16348 Provide String.toBoolean() conversion in JS and common platforms
• Add missing declarations to kotlin-stdlib-common, those that are already supported in both platforms
  • KT-21191 Add missing exception constructors to common and JS declarations
  • KT-21861 Provide NumberFormatException in common projects and make it inherit IllegalArgumentException in all platforms
  • Add missing pattern and options properties to common Regex
• KT-20968 Improve docs for String.format and String.Companion.format

Reflection

• KT-20875 Support Void.TYPE as underlying Class object for KClass
• KT-21453 NPE in TypeSignatureMappingKt#computeInternalName

Tools

• KT-20298 Lint warning when using @Parcelize with delegated properties
• KT-20299 Android non-ASCII TextView Id Unresolved Reference Bug
• KT-20717 @Parcelize Creator.newArray method is generated incorrectly
• KT-20751 kotlin-spring compiler plugin does not open @Validated classes
• KT-21171 _$_findViewCache and _$_findCachedViewById are created in Activity subclass without Kotlin Android Extensions.
• KT-21628 Can't find referenced class kotlin.internal.annotations.AvoidUninitializedObjectCopyingCheck
• KT-21777 RMI "Connection refused" errors with daemon
• KT-21992 @Transient warning for lazy property

Tools. Gradle

• KT-20892 Support module name option in K2MetadataCompilerArguments
• KT-17621 Incremental compilation is very slow when Java file is modified
• KT-14125 Android-extensions don't track xml changes well
• KT-20233 Kapt: using compiler in-process w/ gradle leads to classloader conflict
• KT-21009 Running Gradle build with clean prevents KotlinCompile tasks from loading from cache
• KT-21596 Improve Kapt Gradle Plugin to be more friendly for Kotlin-DSL
• KT-15753 Support cacheable tasks
• KT-17656 Kotlin and Kotlin Android plugin not using available build caches
• KT-20017 Support local (non-relocatable) Gradle build cache
• KT-20598 Missing input annotations on AbstractKotlinCompileTool
• KT-20604 Kotlin plugin breaks relocatability and compile avoidance for Java compile tasks
• KT-21203 Kotlin gradle plugin does not create proper Ivy metadata for dependencies
• KT-21261 Gradle plugin 1.1.60 creates "build-history.bin" outside project.buildDir
• KT-21805 Gradle plugin does not work with JDK 1.7 (KaptGradleModel)
• KT-21806 Gradle Plugin: Using automatic dependency versions with 'maven-publish' plugin does not include dependency version in generated publication POMs

Tools. Incremental Compile

• KT-20840 Multiplatform IC fails if expected or actual file is modified separately
• KT-21622 Make IC work more accurately with changes of Android layouts xml files
• KT-21699 JS IC produces different source maps when enum usage is compiled separately
• KT-20633 Class is not recompiled

Tools. J2K

• KT-21502 Inspection to convert map.put(k, v) into map[k] = v
• KT-19390 Character and string concatenation in Java is converted to code with multiple type errors in Kotlin
• KT-19943 Redundant 'toInt' after converting explicit Integer#intValue call

Tools. JPS

• KT-21574 JPS build: API version in project settings is ignored
• KT-21841 JPS throws exception creating temporary file for module
• KT-21962 Source file dependencies (lookups) are not tracked in JPS when Kotlin daemon is used

Tools. Maven

• KT-20816 Repeated Maven Compiles With Kapt Fail

Tools. REPL

• KT-17561 Embedding kotlin-script-utils may cause version conflicts e.g. with guava
• KT-17921 The JSR 223 scripting engine fails to eval anything after encountering an unresolved reference
• KT-21075 KotlinJsr223JvmLocalScriptEngineFactory does not well with kotlin-compiler-embeddable
• KT-21141 Kotlin script: KotlinJsr223JvmLocalScriptEngine.state.history.reset() seems not clearing the compiler cache

Tools. kapt

Fixes

• KT-18791 Kapt: Constants from R class should not be inlined
• KT-19203 Kapt3 generator doesn't seem to print log level lower to Mandatory Warning
• KT-19402 kapt.correctErrorTypes makes typealias not work.
• KT-19505 Kapt doesn't always stub classes about to be generated.
• KT-19518 Kapt: Support 'correctErrorTypes' option in annotations
• KT-20257 Kapt is incompatible with compiler plugins
• KT-20749 Kapt: Support Java 9
• KT-21144 Kapt: Compilation error with maven plugin (Java 9 compatibility)
• KT-21205 KDoc unavailable via javax.lang.model.util.Elements#getDocComment(Element e)
• KT-21262 Kapt: Remove artificial KaptError exception on errors from annotation processor
• KT-21264 Kapt: -Xmaxerrs javac option is not propagated properly
• KT-21358 Kapt: Support import directive with aliases (correctErrorTypes)
• KT-21359 Kapt: Filter out non-package imports whenever possible (correctErrorTypes)
• KT-21425 kapt warning when assembling unit tests
• KT-21433 Annotations on enum constants are not kept on the generated stub
• KT-21483 Kapt: Loading resources doesn't work without restarting the gradle daemon
• KT-21542 Kapt: Report additional info about time spent in each annotation processor
• KT-21565 Kapt, Maven: Support passing arguments for annotation processors
• KT-21566 Kapt, Maven: Support passing Javac options
• KT-21729 Error message says "androidProcessor" should be "annotationProcessor"
• KT-21936 Kapt 1.2.20-eap: cannot find symbol @KaptSignature
• KT-21735 Kapt cache not cleared
• KT-22056 Applying Kapt plugin causes RuntimeException on Gradle import: "Kapt importer for generated source roots failed, source root name: debug" at KaptProjectResolverExtension.populateAndroidModuleModelIfNeeded()
• KT-22189 ISE from com.sun.tools.javac.util.Context.checkState when switching from 1.2.10 to 1.2.20-eap-33

1.2.10

Compiler

• KT-20821 Error while inlining function reference implicitly applied to this
• KT-21299 Restore adding JDK roots to the beginning of the classpath list

IDE

• KT-21180 Project level api/language version settings are erroneously used as default during Gradle import
• KT-21335 Fix exception on Project Structure view open
• KT-21610 Fix "Could not determine the class-path for interface KotlinGradleModel" on Gradle sync
• Optimize dependency handling during import of Gradle project

JavaScript

• KT-21493 Losing lambda defined in inline function after incremental recompilation

Tools. CLI

• KT-21495 Bash scripts in Kotlin v1.2 compiler have Windows line terminators
• KT-21537 javac 7 do nothing when kotlin-compiler(-embeddable) is in classpath

Libraries

• Unify docs wording of 'trim*' functions
• Improve cover documentation page of kotlin.test library
• Provide summary for kotlin.math package
• Fix unresolved references in the api docs

1.2

Android

• KT-20974 NSME "AndroidModuleModel.getMainArtifact" on Gradle refresh
• KT-20975 IAE "Missing extension point" on Gradle refresh

Compiler

• KT-6359 Provide the way to share code with different targets(JVM, JS)

IDE

• KT-21300 IDEA slow down in Kotlin + Spring project
• KT-20450 Exception in UAST during function inlining
• KT-20789 Can't navigate to inline call/inline use site when runner is delegated to Gradle
• KT-21236 New project button doesn't work with Kotlin plugin enabled and Gradle plugin disabled
• KT-21263 "Configure Kotlin Plugin Updates" suggests incompatible plugin for AS 3.0

Tools. JPS

• KT-20757 Rebuild when language/api version is changed

1.2-RC2

Compiler

• KT-20844 VerifyError on Android after upgrading to 1.2.0-beta-88
• KT-20895 NPE in Kotlin 1.2-beta88 PseudocodeVariablesData.kt:337
• KT-21377 Create fallback flag for "Illegal smart cast is allowed after assignment in try block"

IDE

• KT-18719 Configure Kotlin in Gradle project to 1.2-Mx: add repository mavenCentral() to buildscript
• KT-20782 Exception when working with routing in ktor (non-atomic trees update)
• KT-20966 ISE: Facade class not found from Kotlin test files
• KT-20967 Kotlin plugin upgrade breaks Gradle refresh
• KT-20990 String literal in string template causes ISE
• KT-21028 Add kotlin-stdlib-jre7/8 instead of kotlin-stdlib-jdk7/8 for Kotlin versions below 1.2
• KT-21383 Unsupported method: Library.getProject() when importing Anko project
• Downgrade "use expression body" inspection to INFORMATION default level

IDE. Debugger

• KT-20962 NullPointerException because of nullable location in debugger

IDE. Inspections and Intentions

• KT-20803 Create actual declaration in the same source root as expect declaration

IDE. Refactorings

• KT-20979 Move class refactoring doesn't work anymore

Libraries

• Remove deprecated pairwise function

Tools. Gradle

• KT-21395 “Unable to load class 'kotlin.collections.CollectionsKt'” on creating gradle project in IDEA 2016.3.7

Tools. kapt

• Add kotlin-annotation-processing-embeddable artifact (compatible with kotlin-compiler-embeddable)
• Return kotlin-annotation-processing artifact back (compatible with CLI Kotlin compiler)

1.2-RC

Compiler

Fixes

• KT-20774 "::foo.isInitialized" for lateinit member properties produces incorrect bytecode
• KT-20826 Can't compile Ultimate Idea with Kotlin 1.2
• KT-20879 Compiler problem in when-expressions
• KT-20959 Regression: Unexpected diagnostic NINITIALIZED_ENUM_COMPANION reported in 1.1.60 & 1.2.0-rc
• KT-20651 Don't know how to generate outer expression" for enum-values with non-trivial self-closures

IDE

New Features

• KT-20286 "Configure Kotlin in project" should add kotlin-stdlib-jdk7/8 instead of kotlin-stdlib-jre7/8 starting from Kotlin 1.2

Fixes

• KT-19599 No indentation for multiline collection literal
• KT-20346 Can't build tests in common code due to missing org.jetbrains.kotlin:kotlin-test-js testCompile dependency in JS
• KT-20550 Spring: "Navigate to autowired candidates" gutter action is missed (IDEA 2017.3)
• KT-20566 Spring: "Navigate to the spring beans declaration" gutter action for @ComponentScan is missed (IDEA 2017.3)
• KT-20843 Kotlin TypeDeclarationProvider may stop other declarations providers execution
• KT-20906 Find symbol by name doesn't work
• KT-20920 UAST: SOE Thrown in JavaColorProvider
• KT-20922 Couldn't match ClsMethodImpl from Kotlin test files
• KT-20929 Import Project from Gradle wizard: the same page is shown twice
• KT-20833 MP project: add dependency to kotlin-test-annotation-common to common module

IDE. Completion

• KT-18458 Spring: code completion does not suggest bean names inside @Qualifier before function parameter

IDE. Inspections and Intentions

• KT-20899 Code Cleanup fails to convert Circlet codebase to 1.2
• KT-20949 CCE from UAST (File breadcrumbs don't update when file tree does)

IDE. Refactorings

• KT-20251 Kotlin Gradle script: Refactor → Inline works incorrect when you need to inline all function occurrences

JavaScript

• KT-2976 Suggestion for cleaner style to implement !! operator
• KT-5259 JS: RTTI may be break by overwriting constructor field
• KT-17475 JS: object and companion object named "prototype" cause exceptions
• KT-18095 JS: Wrong behavior of fun named "constructor"
• KT-18105 JS: inner class "length" cause runtime exception
• KT-20625 JS: Interface function with default parameter, overridden by other interface cannot be found at runtime
• KT-20820 JS: IDEA project doesn't generate paths relative to .map

Libraries

• KT-4900 Finalize math operation parameter names

Tools. JPS

• KT-20852 IllegalArgumentException: URI has an authority component on attempt to jps compile the gradle project with javascript module

Tools. kapt

• KT-20877 Butterknife: UninitializedPropertyAccessException: "lateinit property has not been initialized" for field annotated with @BindView.

1.2-Beta2

Multiplatform projects

New Features

• KT-20616 Compiler options for KotlinCompileCommon task
• KT-15522 Treat expect classes without explicit constructors as not having constructors at all
• KT-16099 Do not require obvious override of super-interface methods in non-abstract expect class
• KT-20618 Rename implement to expectedBy in gradle module dependency

Fixes

• KT-16926 'implement' dependency is not transitive when importing gradle project to IDEA
• KT-20634 False error about platform project implementing non-common project
• KT-19170 Forbid private expected declarations
• KT-20431 Prohibit inheritance by delegation in 'expect' classes
• KT-20540 Report errors about incompatible constructors of actual class
• KT-20398 Do not highlight declarations with not implemented implementations with red during typing
• KT-19937 Support "implement expect class" quickfix for nested classes
• KT-20657 Actual annotation with all parameters that have default values doesn't match expected annotation with no-arg constructor
• KT-20680 No actual class member: inconsistent modality check
• KT-18756 multiplatform project: compilation error on implementation of extension property in javascript client module
• KT-17374 Too many "expect declaration has no implementation" inspection in IDE in a multi-platform project
• KT-18455 Multiplatform project: show gutter Navigate to implementation on expect side of method in the expect class
• KT-19222 Useless tooltip on a gutter icon for expect declaration
• KT-20043 multiplatform: No H gutter if a class has nested/inner classes inherited from it
• KT-20164 expect/actual navigation does not work when actual is a typealias
• KT-20254 multiplatform: there is no link between expect and actual classes, if implementation has a constructor when expect doesn't
• KT-20309 multiplatform: ClassCastException on mouse hovering on the H gutter of the actual secondary constructor
• KT-20638 Context menu in common module: NSEE: "Collection contains no element matching the predicate." at KotlinRunConfigurationProducerKt.findJvmImplementationModule()
• KT-18919 multiplatform project: expect keyword is lost on converting to object
• KT-20008 multiplatform: Create expect class implementation should add actual keyword at secondary constructors
• KT-20044 multiplatform: Create expect class implementation should add actual constructor at primary constructor
• KT-20135 "Create expect class implementation" should open created class in editor
• KT-20163 multiplatform: it should be possible to create an implementation for overloaded method if for one method implementation is present already
• KT-20243 multiplatform: quick fix Create expect interface implementation should add actual keyword at interface members
• KT-20325 multiplatform: Quick fix Create actual ... should specify correct classifier name for object, enum class and annotation class

Compiler

New Features

• KT-16028 Allow to have different bodies of inline functions inlined depending on apiVersion

Performance Improvements

• KT-20462 Don't create an array copy for '*(...)'

Fixes

• KT-13644 Information from explicit cast should be used for type inference
• KT-14697 Use-site targeted annotation is not correctly loaded from class file
• KT-17981 Type parameter for catch parameter possible when exception is nested in generic, but fails in runtime
• KT-19251 Stack spilling in constructor arguments breaks Quasar
• KT-20387 Wrong argument generated for accessor call of a protected generic 'operator fun get/set' from base class with primitive type as type parameter
• KT-20491 Incorrect synthetic accessor generated for a generic base class function specialized with primitive type
• KT-20651 "Don't know how to generate outer expression" for enum-values with non-trivial self-closures
• KT-20752 Do not register new kinds of smart casts for unstable values

IDE

New Features

• KT-19146 Parameter hints could be shown for annotation

Fixes

• KT-19207 "Configure Kotlin in project" should add "requires kotlin.stdlib" to module-info for Java 9 modules
• KT-19213 Formatter/Code Style: space between type parameters and where is not inserted
• KT-19216 Parameter name hints should not be shown for functional type invocation
• KT-20448 Exception in UAST during reference search in J2K
• KT-20543 java.lang.ClassCastException on usage of array literals in Spring annotation
• KT-20709 Loop in parent structure when converting a LITERAL_STRING_TEMPLATE_ENTRY

IDE. Completion

• KT-17165 Support array literals in annotations in completion

IDE. Debugger

• KT-18775 Evaluate expression doesn't allow access to properties of private nested objects, including companion

IDE. Inspections and Intentions

New Features

• KT-20108 Support "add requires directive to module-info.java" quick fix on usages of non-required modules in Kotlin sources
• KT-20410 Add inspection for listOf().filterNotNull() to replace it with listOfNotNull()

Fixes

• KT-16636 Remove parentheses after deleting the last unused constructor parameter
• KT-18549 "Add type" quick fix adds non-primitive Array type for annotation parameters
• KT-18631 Inspection to convert emptyArray() to empty literal does not work
• KT-18773 Disable "Replace camel-case name with spaces" intention for JS and common projects
• KT-20183 AE “Classifier descriptor of a type should be of type ClassDescriptor” on adding element to generic collection in function
• KT-20315 "call chain on collection type may be simplified" generates code that does not compile

JavaScript

Fixes

• KT-8285 JS: don't generate tmp when only need one component
• KT-8374 JS: some Double values converts to Int differently on JS and JVM
• KT-14549 JS: Non-local returns from secondary constructors don't work
• KT-15294 JS: parse error in js() function
• KT-17629 JS: Equals function (==) returns true for all primitive numeric types
• KT-17760 JS: Nothing::class throws error
• KT-17933 JS: toString, hashCode method and simplename property of KClass return senseless results for some classes
• KT-18010 JS: JsName annotation in interfaces can cause runtime exception
• KT-18063 Inlining does not work properly in JS for suspend functions from another module
• KT-18548 JS: wrong string interpolation with generic or Any parameters
• KT-19772 JS: wrong boxing behavior for open val and final fun inside open class
• KT-19794 runtime crash with empty object (Javascript)
• KT-19818 JS: generate paths relative to .map file by default (unless "-source-map-prefix" is used)
• KT-19906 JS: rename compiler option "-source-map-source-roots" to avoid misleading since sourcemaps have field called "sourceRoot"
• KT-20287 Functions don't actually return Unit in Kotlin-JS -> unexpected null problems vs JDK version
• KT-20451 KotlinJs - interface function with default parameter, overridden by implementor, can't be found at runtime
• KT-20527 JS: use prototype chain to check that object implements kotlin interface
• KT-20650 JS: compiler crashes in Java 9 with NoClassDefFoundError
• KT-20653 JS: compiler crashes in Java 9 with TranslationRuntimeException

Language design

• KT-20171 Deprecate assigning single elements to varargs in named form

Libraries

• KT-19696 Provide a way to write multiplatform tests
• KT-18961 Closeable.use should call addSuppressed
• KT-2460 PR-1300 shuffle and fill extensions for MutableList now also available in JS
• PR-1230 Add assertSame and assertNotSame methods to kotlin-test

Tools. Gradle

• KT-20553 Rename warningsAsErrors compiler option to allWarningsAsErrors
• KT-20217 src/main/java and src/test/java source directories are no longer included by default in Kotlin/JS and Kotlin/Common projects

Tools. Incremental Compile

• KT-20654 AndroidStudio: NSME “PsiJavaModule.getName()Ljava/lang/String” on calling simple Kotlin functions like println(), listOf()

Binary Metadata

• KT-20547 Write pre-release flag into class files if language version > LATEST_STABLE

1.2-Beta

Android

New Features

• KT-20051 Quickfixes to support @Parcelize

Fixes

• KT-19747 Android extensions + Parcelable: VerifyError in case of RawValue annotation on a type when it's unknown how to parcel it
• KT-19899 Parcelize: Building with ProGuard enabled
• KT-19988 [Android Extensions] inner class LayoutContainer causes NoSuchMethodError
• KT-20002 Parcelize explodes on LongArray
• KT-20019 Parcelize does not propogate flags argument when writing nested Parcelable
• KT-20020 Parcelize does not use primitive array read/write methods on Parcel
• KT-20021 Parcelize does not serialize Parcelable enum as Parcelable
• KT-20022 Parcelize should dispatch directly to java.lang.Enum when writing an enum.
• KT-20034 Application installation failed (INSTALL_FAILED_DEXOPT) in Android 4.3 devices if I use Parcelize
• KT-20057 Parcelize should use specialized write/create methods where available.
• KT-20062 Parceler should allow otherwise un-parcelable property types in enclosing class.
• KT-20170 UAST: Getting the location of a UIdentifier is tricky

Compiler

• KT-4565 Support smart casting of safe cast's subject (and also safe call's receiver)
• KT-8492 Null check should work after save call with elvis in condition
• KT-9327 Need a way to check whether a lateinit property was assigned
• KT-14138 Allow lateinit local variables
• KT-15461 Allow lateinit top level properties
• KT-7257 NPE when accessing properties of enum from inner lambda on initialization
• KT-9580 Report an error if 'setparam' target does not make sense for a parameter declaration
• KT-16310 Nested classes inside enum entries capturing outer members
• KT-20155 Confusing diagnostics on a nested interface in inner class

IDE

• KT-14175 Surround with try ... catch (... finally) doesn't work for expressions
• KT-20308 New Gradle with Kotlin DSL project wizard
• KT-18353 Support UAST for .kts files
• KT-19823 Kotlin Gradle project import into IntelliJ: import kapt generated classes into classpath
• KT-20185 Stub and PSI element type mismatch for "var nullableSuspend: (suspend (P) -> Unit)? = null"

Language design

• KT-14486 Allow smart cast in closure if a local variable is modified only before it (and not after or inside)
• KT-15667 Support "::foo" as a short-hand syntax for bound callable reference to "this::foo"
• KT-16681 kotlin allows mutating the field of read-only property

Libraries

• KT-19258 Java 9: module-info.java with requires kotlin.stdlib causes compiler to fail: "module reads package from both kotlin.reflect and kotlin.stdlib"

Tools

• KT-19692 kotlin-jpa plugin doesn't support @MappedSuperclass annotation
• KT-20030 Parcelize can directly reference writeToParcel and CREATOR for final, non-Parcelize Parcelable types in same compilation unit.
• KT-19742 [Android extensions] Calling clearFindViewByIdCache causes NPE
• KT-19749 Android extensions + Parcelable: NoSuchMethodError on attempt to pack into parcel a serializable object
• KT-20026 Parcelize overrides describeContents despite being already implemented.
• KT-20027 Parcelize uses wrong classloader when reading parcelable type.
• KT-20029 Parcelize should not directly reference parcel methods on types outside compilation unit
• KT-20032 Parcelize does not respect type nullability in case of Parcelize parcelables

Tools. CLI

• KT-10563 Support a command line argument -Werror to treat warnings as errors

Tools. Gradle

• KT-20212 Cannot access internal components from test code

Tools. kapt

• KT-17923 Reference to Dagger generated class is highlighted red
• KT-18923 Kapt: Do not use the Kotlin error message collector to issue errors from kapt
• KT-19097 Request: Decent support of kapt.kotlin.generated on Intellij/Android Studio
• KT-20001 kapt generate stubs Gradle task does not depend on the compilation of sub-project kapt dependencies

1.1.60

Android

New Features

• KT-20051 Quickfixes to support @Parcelize

Fixes

• KT-19747 Android extensions + Parcelable: VerifyError in case of RawValue annotation on a type when it's unknown how to parcel it
• KT-19899 Parcelize: Building with ProGuard enabled
• KT-19988 [Android Extensions] inner class LayoutContainer causes NoSuchMethodError
• KT-20002 Parcelize explodes on LongArray
• KT-20019 Parcelize does not propogate flags argument when writing nested Parcelable
• KT-20020 Parcelize does not use primitive array read/write methods on Parcel
• KT-20021 Parcelize does not serialize Parcelable enum as Parcelable
• KT-20022 Parcelize should dispatch directly to java.lang.Enum when writing an enum.
• KT-20034 Application installation failed (INSTALL_FAILED_DEXOPT) in Android 4.3 devices if I use Parcelize
• KT-20057 Parcelize should use specialized write/create methods where available.
• KT-20062 Parceler should allow otherwise un-parcelable property types in enclosing class.

Compiler

Performance Improvements

• KT-20462 Don't create an array copy for '*(...)'

Fixes

• KT-14697 Use-site targeted annotation is not correctly loaded from class file
• KT-17680 Android Studio and multiple tests in single file
• KT-19251 Stack spilling in constructor arguments breaks Quasar
• KT-19592 Apply JSR 305 default nullability qualifiers with to generic type arguments if they're applicable for TYPE_USE
• KT-20016 JSR 305: default nullability qualifiers are ignored in TYPE_USE and PARAMETER positions
• KT-20131 Support @NonNull(when = NEVER) nullability annotation
• KT-20158 Preserve flexibility for Java types annotated with @NonNull(when = UNKNOWN)
• KT-20337 No multifile class facade is generated for files with type aliases only
• KT-20387 Wrong argument generated for accessor call of a protected generic 'operator fun get/set' from base class with primitive type as type parameter
• KT-20418 Wrong code generated for literal long range with mixed integer literal ends
• KT-20491 Incorrect synthetic accessor generated for a generic base class function specialized with primitive type
• KT-20651 "Don't know how to generate outer expression" for enum-values with non-trivial self-closures
• KT-20707 Support when by enum in kotlin scripts
• KT-20879 Compiler problem in when-expressions

IDE

New Features

• KT-14175 Surround with try ... catch (... finally) doesn't work for expressions
• KT-15769 Join lines could "convert to expression body"
• KT-19134 IntelliJ Color Scheme editor - allow changing color of colons and double colons
• KT-20308 New Gradle with Kotlin DSL project wizard

Fixes

• KT-15932 Attempt to rename private property finds unrelated usages
• KT-18996 After Kotlin compiler settings change: 'Apply' button doesn't work
• KT-19458 Resolver for 'completion/highlighting in ScriptModuleInfo for build.gradle.kts / JVM' does not know how to resolve LibraryInfo
• KT-19474 Kotlin Gradle Script: highlighting fails on unresolved references
• KT-19823 Kotlin Gradle project import into IntelliJ: import kapt generated classes into classpath
• KT-19958 Android: kotlinOptions from build.gradle are not imported into facet
• KT-19972 AssertionError “Resolver for 'completion/highlighting in ModuleProductionSourceInfo(module=Module: 'kotlin-pure_main') for files dummy.kt for platform JVM' does not know how to resolve SdkInfo“ on copying Kotlin file with kotlin.* imports from other project
• KT-20112 maven dependency type test-jar with scope compile not
• KT-20185 Stub and PSI element type mismatch for "var nullableSuspend: (suspend (P) -> Unit)? = null"
• KT-20199 Cut action is not available during indexing
• KT-20331 Wrong EAP repository
• KT-20346 Can't build tests in common code due to missing org.jetbrains.kotlin:kotlin-test-js testCompile dependency in JS
• KT-20419 Android Studio plugin 1.1.50 show multiple gutter icon for the same item
• KT-20519 Error “Parameter specified as non-null is null: method ModuleGrouperKt.isQualifiedModuleNamesEnabled” on creating Gradle (Kotlin DSL) project from scratch
• KT-20550 Spring: "Navigate to autowired candidates" gutter action is missed (IDEA 2017.3)
• KT-20566 Spring: "Navigate to the spring beans declaration" gutter action for @ComponentScan is missed (IDEA 2017.3)
• KT-20621 Provide automatic migration from JetRunConfigurationType to KotlinRunConfigurationType
• KT-20648 Do we need a separate ProjectImportProvider for gradle kotlin dsl projects?
• KT-20782 Non-atomic trees update
• KT-20789 Can't navigate to inline call/inline use site when runner is delegated to Gradle
• KT-20843 Kotlin TypeDeclarationProvider may stop other declarations providers execution
• KT-20929 Import Project from Gradle wizard: the same page is shown twice

IDE. Completion

• KT-16383 IllegalStateException: Failed to create expression from text: '' on choosing ByteArray from completion list
• KT-18458 Spring: code completion does not suggest bean names inside @Qualifier before function parameter
• KT-20256 java.lang.Throwable “Invalid range specified” on editing template inside string literal

IDE. Inspections and Intentions

New Features

• KT-14695 Simplify comparison intention produces meaningless statement for assert()
• KT-17204 Add Assign to property quickfix
• KT-18220 Add data modifier to a class quickfix
• KT-18742 Add quick-fix for CANNOT_CHECK_FOR_ERASED
• KT-19735 Add quickfix for type mismatch that converts Sequence/Array/List
• KT-20259 Show warning if arrays are compared by '!='

Fixes

• KT-10546 Wrong "Unused property" warning on using inline object syntax
• KT-16394 "Convert reference to lambda" generates wrong code
• KT-16808 Intention "Remove unnecessary parantheses" is erroneously proposed for elvis operator on LHS of in operator if RHS of elvis is return with value
• KT-17437 Class highlighted as unused even if Companion methods/fields really used
• KT-19377 Inspections are run for Kotlin Gradle DSL sources
• KT-19420 Kotlin Gradle script editor: suggestion to import required class from stdlib fails with AE: ResolverForProjectImpl.descriptorForModule()
• KT-19626 (Specify type explicitly) Descriptor was not found for VALUE_PARAMETER
• KT-19674 'Convert property initializer to getter' intention fails on incompilable initializer with AssertionError at SpecifyTypeExplicitlyIntention$Companion.addTypeAnnotationWithTemplate()
• KT-19782 Surround with if else doesn't work for expressions
• KT-20010 'Replace safe access expression with 'if' expression' IDEA Kotlin plugin intention may failed
• KT-20104 "Recursive property accessor" reports false positive when property reference is used in the assignment
• KT-20218 AE on calling intention “Convert to secondary constructor” for already referred argument
• KT-20231 False positive 'Redundant override' when delegated member hides super type override
• KT-20261 Incorrect "Redundant Unit return type" inspection for Nothing-typed expression
• KT-20315 "call chain on collection type may be simplified" generates code that does not compile
• KT-20333 Assignment can be lifted out of try is applied too broadly
• KT-20366 Code cleanup: some inspections are broken
• KT-20369 Inspection messages with INFORMATION highlight type are shown in Code Inspect
• KT-20409 useless warning "Remove curly braces" for Chinese character
• KT-20417 Converting property getter to block body doesn't insert explicit return type

IDE. Refactorings

Performance Improvements

• KT-18823 Move class to a separate file is very slow in 'kotlin' project
• KT-20205 Invoke MoveKotlinDeclarationsProcessor.findUsages() under progress

Fixes

• KT-15840 Introduce type alias: don't change not-nullable type with nullable typealias
• KT-17949 Rename private fun should not search it out of scope
• KT-18196 Refactor / Copy: the copy is formatted
• KT-18594 Refactor / Extract (Functional) Parameter are available for annotation arguments, but fail with AE: "Body element is not found"
• KT-19439 Kotlin introduce parameter causes exception
• KT-19909 copy a kotlin class removes imports and other modifications
• KT-19949 AssertionError „Resolver for 'project source roots and libraries for platform JVM' does not know how to resolve ModuleProductionSourceInfo“ through MoveConflictChecker.getModuleDescriptor() on copying Kotlin file from other project
• KT-20092 Refactor / Copy: copy of .kt file removes all the blank lines and 'hanging' comments
• KT-20335 Refactor → Extract Type Parameter: “AWT events are not allowed inside write action” after processing duplicates
• KT-20402 Throwable “PsiElement(IDENTIFIER) by KotlinInplaceParameterIntroducer” on calling Refactor → Extract Parameter for default values
• KT-20403 AE “Body element is not found” on calling Refactor → Extract Parameter for default values in constructor of class without body

JavaScript

Fixes

• KT-8285 JS: don't generate tmp when only need one component
• KT-14549 JS: Non-local returns from secondary constructors don't work
• KT-15294 JS: parse error in js() function
• KT-17450 PlatformDependent members of collections are compiled in JS
• KT-18010 JS: JsName annotation in interfaces can cause runtime exception
• KT-18063 Inlining does not work properly in JS for suspend functions from another module
• KT-18548 JS: wrong string interpolation with generic or Any parameters
• KT-19794 runtime crash with empty object (Javascript)
• KT-19818 JS: generate paths relative to .map file by default (unless "-source-map-prefix" is used)
• KT-19906 JS: rename compiler option "-source-map-source-roots" to avoid misleading since sourcemaps have field called "sourceRoot"
• KT-20287 Functions don't actually return Unit in Kotlin-JS -> unexpected null problems vs JDK version
• KT-20451 KotlinJs - interface function with default parameter, overridden by implementor, can't be found at runtime
• KT-20650 JS: compiler crashes in Java 9 with NoClassDefFoundError
• KT-20653 JS: compiler crashes in Java 9 with TranslationRuntimeException
• KT-20820 JS: IDEA project doesn't generate paths relative to .map

Libraries

• KT-20596 'synchronized' does not allow non-local return in Kotlin JS
• KT-20600 Typo in POMs for kotlin-runtime

Tools

• KT-19692 kotlin-jpa plugin doesn't support @MappedSuperclass annotation
• KT-20030 Parcelize can directly reference writeToParcel and CREATOR for final, non-Parcelize Parcelable types in same compilation unit.
• KT-19742 [Android extensions] Calling clearFindViewByIdCache causes NPE
• KT-19749 Android extensions + Parcelable: NoSuchMethodError on attempt to pack into parcel a serializable object
• KT-20026 Parcelize overrides describeContents despite being already implemented.
• KT-20027 Parcelize uses wrong classloader when reading parcelable type.
• KT-20029 Parcelize should not directly reference parcel methods on types outside compilation unit
• KT-20032 Parcelize does not respect type nullability in case of Parcelize parcelables

Tools. Gradle

• KT-3463 Gradle plugin ignores kotlin compile options changes
• KT-16299 Gradle build does not recompile annotated classes on changing compiler's plugins configuration
• KT-16764 Kotlin Gradle plugin should replicate task dependencies of Java source directories
• KT-17564 Applying Kotlin's Gradle plugin results in src/main/java being listed twice in sourceSets.main.allSource
• KT-17674 Test code is not compiled incrementally when main is changed
• KT-18765 Move incremental compilation message from Gradle's warning to info logging level
• KT-20036 Gradle tasks up-to-date-ness

Tools. J2K

• KT-19565 Java code using Iterator#remove converted to red code
• KT-19651 Java class with static-only methods can contain 'protected' members

Tools. JPS

• KT-20082 Java 9: incremental build reports bogus error for reference to Kotlin source
• KT-20671 Kotlin plugin compiler exception when compiling under JDK9

Tools. Maven

• KT-20064 Maven + Java 9: compile task warns about module-info in the output path
• KT-20400 Do not output module name, version and related information by default in Maven builds

Tools. REPL

• KT-20167 JDK 9 unresolved supertypes: Object when working with Kotlin Scripting API

Tools. kapt

• KT-17923 Reference to Dagger generated class is highlighted red
• KT-18923 Kapt: Do not use the Kotlin error message collector to issue errors from kapt
• KT-19097 Request: Decent support of kapt.kotlin.generated on Intellij/Android Studio
• KT-20877 Butterknife: UninitializedPropertyAccessException: "lateinit property has not been initialized" for field annotated with @BindView.

1.1.50

Android

• KT-14800 Kotlin Lint: @SuppressLint annotation on local variable is ignored
• KT-16600 False positive "For methods, permission annotation should specify one of value, anyOf or allOf"
• KT-16834 Android Lint: Bogus warning on @setparam:StringRes
• KT-17785 Kotlin Lint: "Incorrect support annotation usage" does not pick the value of const val
• KT-18837 Android Lint: Collection.removeIf is not flagged when used on RealmList
• KT-18893 Android support annotations (ColorInt, etc) cannot be used on properties: "does not apply for type void"
• KT-18997 KLint: False positive "Could not find property setter method setLevel on java.lang.Object" if using elvis with return on RHS
• KT-19671 UAST: Parameter annotations not provided for val parameters

Compiler

Performance Improvements

• KT-17963 Unnecessary boxing in case of primitive comparison to object
• KT-18589 'Equality check can be used instead of elvis' produces code that causes boxing
• KT-18693 Optimize in-expression with optimizable range in RHS
• KT-18721 Improve code generation for if-in-primitive-literal expression ('if (expr in low .. high)')
• KT-18818 Optimize null cases in when statement to avoid Intrinsics usage
• KT-18834 Do not create ranges for 'x in low..high' where type of x doesn't match range element type
• KT-19029 Use specialized equality implementations for 'when'
• KT-19149 Use 'for-in-until' loop in intrinsic array constructors
• KT-19252 Use 'for-in-until' loop for 'for-in-rangeTo' loops with constant upper bounds when possible
• KT-19256 Destructuring assignment generates redundant code for temporary variable nullification
• KT-19457 Extremely slow analysis for file with deeply nested lambdas

Fixes

• KT-10754 Bogus unresolved extension function
• KT-11739 Incorrect error message on getValue operator with KProperty parameter
• KT-11834 INAPPLICABLE_LATEINIT_MODIFIER is confusing for a generic type parameter with nullable (default) upper bound
• KT-11963 Exception: recursive call in a lazy value under LockBasedStorageManager
• KT-12737 Confusing error message when calling extension function with an implicit receiver, passing value parameter of wrong type
• KT-12767 Too much unnecessary information in "N type arguments expected" error message
• KT-12796 IllegalArgumentException on referencing inner class constructor on an outer class instance
• KT-12899 Platform null escapes if passed as an extension receiver to an inline function
• KT-13665 Generic componentN() functions should provide better diagnostics when type cannot be inferred
• KT-16223 Confusing diagnostic for local inline functions
• KT-16246 CompilationException caused by intersection type overload and wrong type parameter
• KT-16746 DslMarker doesn't work with typealiases
• KT-17444 Accessors generated for private file functions should respect @JvmName
• KT-17464 Calling super constructor with generic function call in arguments fails at runtime
• KT-17725 java.lang.VerifyError when both dispatch receiver and extension receiver have smart casts
• KT-17745 Unfriendly error message on creating an instance of interface via typealias
• KT-17748 Equality for class literals of primitive types is not preserved by reification
• KT-17879 Comparing T::class from a reified generic with a Class<> and KClass<> variable in when statement is broken
• KT-18356 Argument reordering in super class constructor call for anonymous object fails with VerifyError
• KT-18819 JVM BE treats 'if (a in low .. high)' as 'if (a >= low && a <= high)', so 'high' can be non-evaluated
• KT-18855 Convert "Remove at from annotation argument" inspection into compiler error & quick-fix
• KT-18858 Exception within typealias expansion with dynamic used as one of type arguments
• KT-18902 NullPointerException when using provideDelegate with properties of the base class at runtime
• KT-18940 REPEATED_ANNOTATION is reported on wrong location for typealias arguments
• KT-18944 Type annotations are lost for dynamic type
• KT-18966 Report full package FQ name in compilation errors related to visibility
• KT-18971 Missing non-null assertion for platform type passed as a receiver to the member extension function
• KT-18982 NoSuchFieldError on access to imported object property from the declaring object itself
• KT-18985 Too large highlighting range for UNCHECKED_CAST
• KT-19058 VerifyError: no CHECKAST on dispatch receiver of the synthetic property defined in Java interface
• KT-19100 VerifyError: missing CHECKCAST on extension receiver of the extension property
• KT-19115 Report warnings on usages of JSR 305-annotated declarations which rely on incorrect or missing nullability information
• KT-19128 java.lang.VerifyError with smart cast to String from Any
• KT-19180 Bad SAM conversion of Java interface causing ClassCastException: [...] cannot be cast to kotlin.jvm.functions.Function1
• KT-19205 Poor diagnostic message for deprecated class referenced through typealias
• KT-19367 NSFE if property with name matching companion object property name is referenced within lambda
• KT-19434 Object inheriting generic class with a reified type parameter looses method annotations
• KT-19475 AnalyserException in case of combination of while (true) + stack-spilling (coroutines/try-catch expressions)
• KT-19528 Compiler exception on inline suspend function inside a generic class
• KT-19575 Deprecated typealias is not marked as such in access to companion object
• KT-19601 UPPER_BOUND_VIOLATED reported on type alias expansion in a recursive upper bound on a type parameter
• KT-19814 Runtime annotations for open suspend function are not generated correctly
• KT-19892 Overriding remove method on inheritance from TreeSet
• KT-19910 Nullability assertions removed when inlining an anonymous object in crossinline lambda
• KT-19985 JSR 305: nullability qualifier of Java function return type detected incorrectly in case of using annotation nickname

IDE

New Features

• KT-6676 Show enum constant ordinal in quick doc like in Java
• KT-12246 Kotlin source files are not highlighted in Gradle build output in IntelliJ

Performance Improvements

• KT-19670 When computing argument hints, don't resolve call if none of the arguments are unclear expressions

Fixes

• KT-9288 Call hierarchy ends on function call inside local val initializer expression
• KT-9669 Join Lines should add semicolon when joining statements into the same line
• KT-14346 IllegalArgumentException on attempt to call Show Hierarchy view on lambda
• KT-14428 AssertionError in KotlinCallerMethodsTreeStructure. on attempt to call Hierarchy view
• KT-19466 Kotlin based Gradle build not recognized when added as a module
• KT-18083 IDEA: Support extension main function
• KT-18863 Formatter should add space after opening brace in a single-line enum declaration
• KT-19024 build.gradle.kts is not supported as project
• KT-19124 Creating source file with directory/package throws AE: "Write access is allowed inside write-action only" at NewKotlinFileAction$Companion.findOrCreateTarget()
• KT-19154 Completion and auto-import does not suggest companion object members when inside an extension function
• KT-19202 Applying 'ReplaceWith' fix in type alias can change program behaviour
• KT-19209 "Stub and PSI element type mismatch" in when receiver type is annotated with @receiver
• KT-19277 Optimize imports on the fly should not work in test data files
• KT-19278 Optimize imports on the fly should not remove incomplete import while it's being typed
• KT-19322 Script editor: Move Statement Down/Up can't move one out of top level lambda
• KT-19451 "Unresolved reference" with Kotlin Android Extensions when layout defines the Android namespace as something other than "android"
• KT-19492 Java 9: references from unnamed module to not exported classes of named module are compiled, but red in the editor
• KT-19493 Java 9: references from named module to classes of unnamed module are not compiled, but green in the editor
• KT-19843 Performance warning: LineMarker is supposed to be registered for leaf elements only
• KT-19889 KotlinGradleModel : Unsupported major.minor version 52.0
• KT-19885 200% CPU for some time on Kotlin sources (PackagePartClassUtils.hasTopLevelCallables())
• KT-19901 KotlinLanguageInjector#getLanguagesToInject can cancel any progress in which it was invoked
• KT-19903 Copy Reference works incorrectly for const val
• KT-20153 Kotlin facet: Java 9 -Xadd-modules setting produces more and more identical sub-elements of <additionalJavaModules> in .iml file

IDE. Completion

• KT-8848 Code completion does not support import aliases
• KT-18040 There is no auto-popup competion after typing "$x." anymore
• KT-19015 Smart completion: parameter list completion is not available when some of parameters are already written

IDE. Debugger

• KT-19429 Breakpoint appears in random place during debug

IDE. Inspections and Intentions

New Features

• KT-4748 Remove double negation for boolean expressions intention + inspection
• KT-5878 Quickfix for "variable initializer is redundant" (VARIABLE_WITH_REDUNDANT_INITIALIZER)
• KT-11991 Kotlin should have an inspection to suggest the simplified format for a no argument lambda
• KT-12195 Quickfix @JvmStatic on main() method in an object
• KT-12233 "Package naming convention" inspection could show warning in .kt sources
• KT-12504 Intention to make open class with only private constructors sealed
• KT-12523 Quick-fix to remove when with only else
• KT-12613 "Make abstract" on member of open or final class should make abstract both member and class
• KT-16033 Automatically static import the enum value name when "Add remaining branches" on an enum from another class/file
• KT-16404 Create from usage should allow generating nested classes
• KT-17322 Intentions to generate a getter and a setter for a property
• KT-17888 Inspection to warn about suspicious combination of == and ===
• KT-18826 INAPPLICABLE_LATEINIT_MODIFIER should have a quickfix to remove initializer
• KT-18965 Add quick-fix for USELESS_IS_CHECK
• KT-19126 Add quickfix for 'Property initializes are not allowed in interfaces'
• KT-19282 Support "flip equals" intention for String.equals extension from stdlib
• KT-19428 Add inspection for redundant overrides that only call the super method
• KT-19514 Redundant getter / setter inspection

Fixes

• KT-13985 "Add remaining branches" action does not use back-ticks correctly
• KT-15422 Reduce irrelevant reporting of Destructure inspection
• KT-17480 Create from usage in expression body of override function should take base type into account
• KT-18482 "Move lambda argument to parenthesis" action generate uncompilable code
• KT-18665 "Use destructuring declaration" must not be suggested for invisible properties
• KT-18666 "Use destructuring declaration" should not be reported on a variable used in destructuring declaration only
• KT-18978 Intention Move to class body generates incorrect code for vararg val/var
• KT-19006 Inspection message "Equality check can be used instead of elvis" is slightly confusing
• KT-19011 Unnecessary import for companion object property with extension function type is automatically inserted
• KT-19299 Quickfix to correct overriding function signature keeps java NotNull annotations
• KT-19614 Quickfix for INVISIBLE_MEMBER doesn't offer to make member protected if referenced from subclass
• KT-19666 ClassCastException in IfThenToElvisIntention
• KT-19704 Don't remove braces in redundant cascade if
• KT-19811 Internal member incorrectly highlighted as unused
• KT-19926 Naming convention inspections: pattern is validated while edited, PSE at Pattern.error()
• KT-19927 "Package naming convention" inspection checks FQN, but default pattern looks like for simple name

IDE. Refactorings

• KT-17266 Refactor / Inline Function: reference to member of class containing extension function is inlined wrong
• KT-17776 Inline method of inner class adds 'this' for methods from enclosing class
• KT-19161 Safe delete conflicts are shown incorrectly for local declarations

JavaScript

Performance Improvements

• KT-18329 JS: for loop implementation depends on parentheses

Fixes

• KT-12970 Empty block expression result is 'undefined' (expected: 'kotlin.Unit')
• KT-13930 Safe call for a function returning 'Unit' result is 'undefined' or 'null' (instead of 'kotlin.Unit' or 'null')
• KT-13932 'kotlin.Unit' is not materialized in some functions returning supertype of 'Unit' ('undefined' returned instead)
• KT-16408 JS: Inliner loses imported values when extending a class from another module
• KT-17014 Different results in JVM and JavaScript on Unit-returning functions
• KT-17915 JS: 'kotlin.Unit' is not materialized as result of try-catch block expression with empty catch
• KT-18166 JS: Delegated property named with non-identifier symbols can crash in runtime.
• KT-18176 JS: dynamic type should not allow methods and properties with incorrect identifier symbols
• KT-18216 JS: Unit-returning expression used in loop can cause wrong behavior
• KT-18793 Kotlin Javascript compiler null handling generates if-else block where else is always taken
• KT-19108 JS: Inconsistent behaviour from JVM code when modifying variable whilst calling run on it
• KT-19495 JS: Wrong compilation of nested conditions with if- and when-clauses
• KT-19540 JS: prohibit to use illegal symbols on call site
• KT-19542 JS: delegate field should have unique name otherwise it can be accidentally overwritten
• KT-19712 KotlinJS - providing default value of lambda-argument produces invalid js-code
• KT-19793 build-crash with external varargs (Javascript)
• KT-19821 JS remap sourcemaps in DCE
• KT-19891 Runtime crash with inline function with reified type parameter and object expression: "T_0 is not defined" (JavaScript)
• KT-20005 Invalid source map with option sourceMapEmbedSources = "always"

Libraries

• KT-19133 Specialize any and none for Collection
• KT-18267 Deprecate CharSequence.size extension function on the JS side
• KT-18992 JS: Missing MutableMap.iterator()
• KT-19881 Expand doc comment of @PublishedApi

Tools. CLI

• KT-18859 Strange error message when kotlin-embeddable-compiler is run without explicit -kotlin-home
• KT-19287 Common module compilation: K2MetadataCompiler ignores coroutines state

Tools. Gradle

• KT-17150 Support 'packagePrefix' option in Gradle plugin
• KT-19956 Support incremental compilation to JS in Gradle
• KT-13918 Cannot access internal classes/methods in androidTest source set in an Android library module
• KT-17355 Use archivesBaseName instead of project.name for module names, get rid of _main for main source set
• KT-18183 Kotlin gradle plugin uses compile task output as "friends directory"
• KT-19248 Documentation suggested way to enable coroutines (gradle) doesn't work
• KT-19397 local.properties file not closed by KotlinProperties.kt

Tools. Incremental Compile

• KT-19580 IC does not detect non-nested sealed class addition

Tools. J2K

• KT-10375 0xFFFFFFFFFFFFFFFFL conversion issue
• KT-13552 switch-to-when conversion creates broken code
• KT-17379 Converting multiline expressions creates dangling operations
• KT-18232 Kotlin code converter misses annotations
• KT-18786 Convert Kotlin to Java generates error: Variable cannot be initialized before declaration
• KT-19523 J2K produce invalid code when convert some numbers

Tools. JPS

• KT-17397 Kotlin JPS Builder can mark dirty files already compiled in round
• KT-19176 Java 9: JPS build fails for Kotlin source referring exported Kotlin class from another module: "unresolved supertypes: kotlin.Any"
• KT-19833 Cannot access class/superclass from SDK on compilation of JDK 9 module together with non-9 module

Tools. REPL

• KT-11369 REPL: Ctrl-C should interrupt the input, Ctrl-D should quit

Tools. kapt

• KT-19996 Error with 'kotlin-kapt' plugin and dagger2, clean project required

1.1.4-3

• KT-18062 SamWithReceiver compiler plugin not used by IntelliJ for .kt files
• KT-18497 Gradle Kotlin Plugin does not work with the gradle java-library plugin
• KT-19276 Console spam when opening idea-community project in debug IDEA
• KT-19433 [Coroutines + Kapt3] Assertion failed in ClassClsStubBuilder.createNestedClassStub
• KT-19680 kapt3 & Parcelize: Compilation error
• KT-19687 Kotlin 1.1.4 noarg plugin breaks with sealed classes
• KT-19700 Kapt error after updating to 1.1.4 - stub adds type parameters where there are none
• KT-19713 Mocking of final named suspend methods with mockito fails
• KT-19729 kapt3: not always including argument to @javax.inject.Named in generated stubs
• KT-19759 "Convert to expression body" is not shown in 162 / AS23 branches for multi-liners
• KT-19767 NPE caused by Map<String, Boolean>?.get
• KT-19769 PerModulePackageCacheService calls getOrderEntriesForFile() for every file, even those that can't affect Kotlin resolve
• KT-19774 Provide an opt-out flag for separate classes directories (Gradle 4.0+)
• KT-19847 if an imported library already exists it should be redetected during gradle import

1.1.4-2

• KT-19679 CompilationException: Couldn't inline method call 'methodName' into...
• KT-19690 Lazy field in interface default method leads to ClassFormatError
• KT-19716 Quickdoc Ctrl+Q broken while browsing code completion list Ctrl-Space
• KT-19717 Library kind incorrectly detected for vertx-web in Kotlin project
• KT-19723 "Insufficient maximum stack size" during compilation

1.1.4

Android

New Features

• KT-11048 Android Extensions: cannot evaluate expression containing generated properties

Performance Improvements

• KT-10542 Android Extensions: No cache for Views
• KT-18250 Android Extensions: Allow to use SparseArray as a View cache

Fixes

• KT-11051 Android Extensions: completion of generated properties is unclear for ambiguous ids
• KT-14086 Android-extensions not generated using flavors dimension
• KT-14912 Lint: "Code contains STOPSHIP marker" ignores suppress annotation
• KT-15164 Kotlin Lint: problems in delegate expression are not reported
• KT-16934 Android Extensions fails to compile when importing synthetic properties for layouts in other modules
• KT-17641 Problem with Kotlin Android Extensions and Gradle syntax
• KT-17783 Kotlin Lint: quick fixes to add inapplicable @RequiresApi and @SuppressLint make code incompilable
• KT-17786 Kotlin Lint: "Surround with if()" quick fix is not suggested for single expression get()
• KT-17787 Kotlin Lint: "Add @TargetApi" quick fix is not suggested for top level property accessor
• KT-17788 Kotlin Lint: "Surround with if()" quick fix corrupts code in case of destructuring declaration
• KT-17890 [kotlin-android-extensions] Renaming layout file does not rename import
• KT-18012 Kotlin Android Extensions generates @NotNull properties for views present in a configuration and potentially missing in another
• KT-18545 Accessing to synthetic properties on smart casted Android components crashed compiler

Compiler

New Features

• KT-10942 Support meta-annotations from JSR 305 for nullability qualifiers
• KT-14187 Redundant "is" check is not detected
• KT-16603 Support inline suspend function
• KT-17585 Generate state machine for named functions in their bodies

Performance Improvements

• KT-3098 Generate efficient comparisons
• KT-6247 Optimization for 'in' and '..'
• KT-7571 Don't box Double instance to call hashCode on Java 8
• KT-9900 Optimize range operations for 'until' extension from stdlib
• KT-11959 Unnceessary boxing/unboxing due to Comparable.compareTo
• KT-12158 Optimize away boxing when comparing nullable primitive type value to primitive value
• KT-13682 Reuse StringBuilder for concatenation and string interpolation
• KT-14323 IntelliJ lockup when using Apache Spark UDF
• KT-14375 Kotlin compiler failure with spark when creating a flexible type for scala.Function22
• KT-15235 Escaped characters in template strings are generating inefficient implementations
• KT-17280 Inline constant expressions in string templates
• KT-17903 Generate 'for-in-indices' as a precondition loop
• KT-18157 Optimize out trivial INSTANCEOF checks
• KT-18162 Do not check nullability assertions twice for effectively same value
• KT-18164 Do not check nullability for values that have been already checked with !!
• KT-18478 Unnecessary nullification of bound variables
• KT-18558 Flatten nested string concatenation
• KT-18777 Unnecessary boolean negation generated for 'if (expr !in range)'

Fixes

• KT-1809 Confusing diagnostics when wrong number of type arguments are specified and there are several callee candiates
• KT-2007 Improve diagnostics when + in not resolved on a pair of nullable ints
• KT-5066 Bad diagnostic message for ABSTRACT_MEMBER_NOT_IMPLEMENTED for (companion) object
• KT-5511 Inconsistent handling of inner enum
• KT-7773 Disallow to explicitly extend Enum class
• KT-7975 Unclear error message when redundant type arguments supplied
• KT-8340 vararg in a property setter must be an error
• KT-8612 Incorrect error message for var extension property without getter or setter
• KT-8829 Type parameter of a class is not resolved in the constructor parameter's default value
• KT-8845 Bogus diagnostic on infix operation "in"
• KT-9282 Improve diagnostic on overload resolution ambiguity when a nullable argument is passed to non-null parameter
• KT-10045 Not specific enough compiler error message in case of trying to call overloaded private methods
• KT-10164 Incorrect error message for external inline method
• KT-10248 Smart casts: Misleading error on overloaded function call
• KT-10657 Confusing diagnostic when trying to invoke value as a function
• KT-10839 Weird diagnostics on callable reference of unresolved class
• KT-11119 Confusing error message when overloaded method is called on nullable receiver
• KT-12408 Generic information lost for override values
• KT-12551 Report "unused expression" on unused bound double colon expressions
• KT-13749 Error highlighting range for no 'override' modifier is bigger than needed
• KT-14598 Do not report "member is final and cannot be overridden" when overriding something from final class
• KT-14633 "If must have both main and else branches" diagnostic range is too high
• KT-14647 Confusing error message "'@receiver:' annotations could be applied only to extension function or extension property declarations"
• KT-14927 TCE in QualifiedExpressionResolver
• KT-15243 Report deprecation on usages of type alias expanded to a deprecated class
• KT-15804 Prohibit having duplicate parameter names in functional types
• KT-15810 destructuring declarations don't work in scripts on the top level
• KT-15931 IllegalStateException: ClassDescriptor of superType should not be null: T by a
• KT-16016 Compiler failure with NO_EXPECTED_TYPE
• KT-16448 Inline suspend functions with inlined suspend invocations are miscompiled (VerifyError, ClassNotFound)
• KT-16576 Wrong code generated with skynet benchmark
• KT-17007 Kotlin is not optimizing away unreachable code based on const vals
• KT-17188 Do not propose to specify constructor invocation for classes without an accessible constructor
• KT-17611 Unnecessary "Name shadowed" warning on parameter of local function or local class member
• KT-17692 NPE in compiler when calling KClass.java on function result of type Unit
• KT-17820 False "useless cast" when target type is flexible
• KT-17972 Anonymous class generated from lambda captures its outer and tries to set nonexistent this$0 field.
• KT-18029 typealias not working in .kts files
• KT-18085 Compilation Error:Kotlin: [Internal Error] kotlin.TypeCastException: null cannot be cast to non-null type com.intellij.psi.PsiElement
• KT-18115 Generic inherited classes in different packages with coroutine causes java.lang.VerifyError: Bad local variable type
• KT-18189 Incorrect generic signature generated for implementation methods overriding special built-ins
• KT-18234 Top-level variables in script aren't local variables
• KT-18413 Strange compiler error - probably incremental compiler
• KT-18486 Superfluos generation of suspend function state-machine because of inner suspension of different coroutine
• KT-18598 Report error on access to declarations from non-exported packages and from inaccessible modules on Java 9
• KT-18698 java.lang.IllegalStateException: resolveToInstruction: incorrect index -1 for label L12 in subroutine
• KT-18702 Proguard warning with Kotlin 1.2-M1
• KT-18728 Integer method reference application fails with CompilationException: Back-end (JVM) Internal error
• KT-18845 Exception on building gradle project with collection literals
• KT-18867 Getting constant "VerifyError: Operand stack underflow" from Kotlin plugin
• KT-18916 Strange bytecode generated for 'null' passed as SAM adapter for Java interface
• KT-18983 Coroutines: miscompiled suspend for loop (local variables are not spilled around suspension points)
• KT-19175 Compiler generates different bytecode when classes are compiled separately or together
• KT-19246 Using generic inline function inside inline extension function throws java.lang.VerifyError: Bad return type
• KT-19419 Support JSR 305 meta-annotations in libraries even when JSR 305 JAR is not on the classpath

IDE

New Features

• KT-2638 Inline property (with accessors) refactoring
• KT-7107 Rename refactoring for labels
• KT-9818 Code style for method expression bodies
• KT-11994 Data flow analysis support for Kotlin in IntelliJ
• KT-14126 Code style wrapping options for enum constants
• KT-14929 Deprecated ReplaceWith for type aliases
• KT-14950 Code Style: Wrapping and Braces / "Local variable annotations" setting could be supported
• KT-14965 "Configure Kotlin in project" should support build.gradle.kts
• KT-15504 Add code style options to limit number of blank lines
• KT-16558 Code Style: Add Options for "Spaces Before Parentheses"
• KT-18113 Add new line options to code style for method parameters
• KT-18605 Option to not use continuation indent in chained calls
• KT-18607 Options to put blank lines between 'when' branches

Performance Improvements

• KT-14606 Code completion calculates decompiled text when building lookup elements for PSI from compiled classes
• KT-17751 Kotlin slows down java inspections big time
• KT-17835 10s hang on IDEA project open
• KT-18842 Very slow typing in certain files of Kotlin project
• KT-18921 Configure library kind explicitly

Fixes

• KT-6610 Language injection doesn't work with String Interpolation
• KT-8893 Quick documentation shows type for top-level object-type elements, but "no name provided" for local ones
• KT-9359 "Accidental override" error message does not mention class (type) names
• KT-10736 Highlighting usages doesn't work for synthetic properties created by the Android Extensions
• KT-11980 Spring: Generate Constructor, Setter Dependency in XML for Kotlin class: IOE at LightElement.add()
• KT-12123 Formatter: always indent after newline in variable initialization
• KT-12910 spring: create init-method/destroy-method from usage results in IOE
• KT-13072 Kotlin struggles to index JDK 9 classes
• KT-13099 formatting in angle brackets ignored and not fixed
• KT-14083 Formatting of where clasuses
• KT-14271 Value captured in closure doesn't always get highlighted
• KT-14561 Use regular indent for the primary constructor parameters
• KT-14974 "Find Usages" hangs in ExpressionsOfTypeProcessor
• KT-15093 Navigation to library may not work if there's another module in same project that references same jar via a different library
• KT-15270 Quickfix to migrate from @native***
• KT-16352 Create from usage inserts extra space in first step
• KT-16725 Formatter does not fix spaces before square brackets
• KT-16999 "Parameter info" shows duplicates on toString
• KT-17357 BuiltIns for module build with project LV settings, not with facet module settings
• KT-17394 Core formatting is wrong for expression body properties
• KT-17759 Breakpoints not working in JS
• KT-17771 Kotlin IntelliJ plugin should resolve Gradle script classpath asynchronously
• KT-17818 Formatting of long constructors is inconsistent with Kotlin code conventions
• KT-17849 Automatically insert trimMargin() or trimIndent() on enter in multi-line strings
• KT-17855 Main function is shown as unused
• KT-17894 String trimIndent support inserts wrong indent in some cases
• KT-17942 Enter in multiline string with injection doesn't add a proper indent
• KT-17956 Type hints for properties that only consist of constructor calls don't add much value
• KT-18006 Copying part of string literal with escape sequences converts this sequences to special characters
• KT-18030 Parameters hints: kotlin.arrayOf(elements) should be on the blacklist by default
• KT-18059 Kotlin Lint: False positive error "requires api level 24" for interface method with body
• KT-18149 PIEAE "Element class CompositeElement of type REFERENCE_EXPRESSION (class KtNameReferenceExpressionElementType)" at PsiInvalidElementAccessException.createByNode()
• KT-18151 Do not import jdkHome from Gradle/Maven model
• KT-18158 Expand selection should select the comment after expression getter on the same line
• KT-18186 Create function from usage should infer expected return type
• KT-18221 AE at org.jetbrains.kotlin.analyzer.ResolverForProjectImpl.descriptorForModule
• KT-18269 Find Usages fails to find operator-style usages of invoke() defined as extension
• KT-18298 spring: strange menu at "Navige to the spring bean" gutter
• KT-18309 Join lines breaks code
• KT-18373 Facet: can't change target platform between JVM versions
• KT-18376 Maven import fails with NPE at ArgumentUtils.convertArgumentsToStringList() if jvmTarget setting is absent
• KT-18418 Generate equals and hashCode should be available for classes without properties
• KT-18429 Android strings resources folding false positives
• KT-18444 Type hints don't work for destructuring declarations
• KT-18475 Gradle/IntelliJ sync can result in IntelliJ modules getting gradle artifacts added to the classpath, breaking compilation
• KT-18479 Can't find usages of invoke operator with vararg parameter
• KT-18501 Quick Documentation doesn't show when @Supress("unused") is above the javadoc
• KT-18566 Long find usages for operators when there are several operators for the same type
• KT-18596 "Generate hashCode" produces poorly formatted code
• KT-18725 Android: kotlin-language facet disappears on reopening the project
• KT-18974 Type hints shouldn't appear for negative literals
• KT-19054 Lags in typing in string literal
• KT-19062 Member navigation doesn't work in expression bodies of getters with inferred property type
• KT-19210 Command line flags like -Xload-jsr305-annotations have no effect in IDE
• KT-19303 Project language version settings are used to analyze libraries, disabling module-specific analysis flags like -Xjsr305-annotations

IDE. Completion

• KT-8208 Support static member completion with not-imported-yet classes
• KT-12104 Smart completion does not work with "invoke" when receiver is expression
• KT-17074 Incorrect autocomplete suggestions for contexts affected by @DslMarker
• KT-18443 IntelliJ not handling default constructor argument from companion object well
• KT-19191 Disable completion binding context caching by default

IDE. Debugger

• KT-14845 Evaluate expression freezes debugger while evaluating filter, for time proportional to number of elements in collection.
• KT-17120 Evaluate expression: cannot find local variable
• KT-18453 Support 'Step over' and 'Force step over' action for suspended calls
• KT-18577 Debug: Smart Step Into does not enter functions passed as variable or parameter: "Method invoke() has not been called"
• KT-18632 Debug: Smart Step Into does not enter functions passed as variable or parameter when signature of lambda and parameter doesn't match
• KT-18949 Can't stop on breakpoint after call to inline in Android Studio
• KT-19403 30s complete hangs of application on breakpoints stop attempt

IDE. Inspections and Intentions

New Features

• KT-12119 Intention to replace .addAll() on a mutable collection with +=
• KT-13436 Replace 'when' with return: handle case when all branches jump out (return Nothing)
• KT-13458 Cascade "replace with return" for if/when expressions
• KT-13676 Add better quickfix for 'let' and 'error 'only not null or asserted calls are allowed'
• KT-14648 Add quickfix for @receiver annotation being applied to extension member instead of extension type
• KT-14799 Add inspection to simplify successive null checks into safe-call and null check
• KT-14900 "Lift return out of when/if" should work with control flow expressions
• KT-15257 JS: quickfix to migrate from @native to external
• KT-15368 Add intention to convert Boolean? == true to ?: false and vice versa
• KT-15893 "Array property in data class" inspection could have a quick fix to generate equals() and hashcode()
• KT-15958 Inspection to inline "unnecessary" variables
• KT-16063 Inspection to suggest converting block body to expression body
• KT-17198 Inspection to replace filter calls followed by functions with a predicate variant
• KT-17580 Add remaning branches intention should be available for sealed classes
• KT-17583 Support "Declaration access can be weaker" inspection for kotlin properties
• KT-17815 Quick-fix "Replace with safe call & elvis"
• KT-17842 Add quick-fix for NO_CONSTRUCTOR error
• KT-17895 Inspection to replace 'a .. b-1' with 'a until b'
• KT-17919 Add "Simplify if" intention/inspection
• KT-17920 Add intention/inspection removing redundant spread operator for arrayOf call
• KT-17970 Intention actions to format parameter/argument list placing each on separate line
• KT-18236 Add inspection for potentially wrongly placed unary operators
• KT-18274 Add inspection to replace map+joinTo with joinTo(transform)
• KT-18386 Inspection to detect safe calls of orEmpty()
• KT-18438 Add inspection for empty ranges with start > endInclusive
• KT-18460 Add intentions to apply De Morgan's laws to conditions
• KT-18516 Add inspection to detect & remove redundant Unit
• KT-18517 Provide "Remove explicit type" inspection for some obvious cases
• KT-18534 Quick-fix to add empty brackets after primary constructor
• KT-18540 Add quickfix to create data class property from usage in destructuring declaration
• KT-18615 Inspection to replace if with three or more options with when
• KT-18749 Inspection for useless operations on collection with not-null elements
• KT-18830 "Lift return out of try"

Fixes

• KT-11906 Spring: "Create getter / setter" quick fixes cause IOE at LightElement.add()
• KT-12524 Wrong "redundant semicolon" for semicolon inside an enum class before the companion object declaration
• KT-13870 Wrong caption "Change to property access" for Quick Fix to convert class instantiation to object reference
• KT-13886 Unused variable intention should remove constant initializer
• KT-14092 "Make " intention inserts modifier between annotation and class keywords
• KT-14093 "Make " intention available only on modifier when declaration already have a visibility modifier
• KT-14643 "Add non-null asserted call" quickfix should not be offered on literal null constants
• KT-15242 Create type from usage should include constraints into base types
• KT-16046 Globally unused typealias is not marked as such
• KT-16069 "Simplify if statement" doesn't work in specific case
• KT-17026 "Replace explicit parameter" should not be shown on destructuring declaration
• KT-17092 Create function from usage works incorrectly with ::class expression
• KT-17353 "Create type parameter from usage" should not be offered for unresolved annotations
• KT-17537 Create from Usage should suggest Boolean return type if function is used in if condition
• KT-17623 "Remove explicit type arguments" is too conservative sometimes
• KT-17651 Create property from usage should make lateinit var
• KT-17726 Nullability quick-fixes operate incorrectly with implicit nullable receiver
• KT-17740 CME at MakeOverriddenMemberOpenFix.getText()
• KT-18506 Inspection on final Kotlin spring components is false positive
• KT-17823 Intention "Make private" and friends should respect modifier order
• KT-17917 Superfluos suggestion to add replaceWith for DeprecationLevel.HIDDEN
• KT-17954 Setting error severity on "Kotlin | Function or property has platform type" does not show up as error in IDE
• KT-17996 Android Studio Default Constructor Command Removes Custom Setter
• KT-18033 Do not suggest to cast expression to non-nullable type when it's the same as !!
• KT-18035 Quickfix for "CanBePrimaryConstructorProperty" does not work correctly with vararg constructor properties
• KT-18044 "Move to class body" intention: better placement in the body
• KT-18074 Suggestion in Intention 'Specify return type explicitly' doesn't support generic type parameter
• KT-18120 Recursive property accessor gives false positives
• KT-18148 Incorrect, not working quickfix - final and can't be overridden
• KT-18160 Circular autofix actions between redundant modality and non-final variable with allopen plugin
• KT-18194 "Protected in final" inspection works incorrectly with all-open
• KT-18195 "Redundant modality" is not reported with all-open
• KT-18197 Redundant "make open" for abstract class member with all-open
• KT-18253 Wrong location of "Redundant 'toString()' call in string template" quickfix
• KT-18347 Nullability quickfixes are not helpful when using invoke operator
• KT-18368 "Cast expression x to Type" fails for expression inside argument list
• KT-18375 Backticked function name is suggested to be renamed to the same name
• KT-18385 Spring: Generate Dependency causes Throwable "AWT events are not allowed inside write action"
• KT-18407 "Move property to constructor" action should not appear on properties declared in interfaces
• KT-18425 Make intention inserts modifier at wrong position for sealed class
• KT-18529 Add '!!' quick fix applies to wrong expression on operation 'in'
• KT-18642 Remove unused parameter intention transfers default value to another parameter
• KT-18683 Wrong 'equals' is generated for Kotlin JS project
• KT-18709 "Lift assignment out of if" changes semantics
• KT-18711 "Lift return out of when" changes semantics for functional type
• KT-18717 Report MemberVisibilityCanBePrivate on visibility modifier if present
• KT-18722 Correct "before" sample in description for intention Convert to enum class
• KT-18723 Correct "after" sample for intention Convert to apply
• KT-18852 "Lift return out of when" does not work for exhaustive when without else
• KT-18928 In IDE, "Replace 'if' expression with safe access expression incorrectly replace expression when using property
• KT-18954 Kotlin plugin updater activates in headless mode
• KT-18970 Do not report "property can be private" on JvmField properties
• KT-19232 Replace Math.min with coerceAtMost intention is broken
• KT-19272 Do not report "function can be private" on JUnit 3 test methods

IDE. Refactorings

New Features

• KT-4379 Support renaming import alias
• KT-8180 Copy Class
• KT-17547 Refactor / Move: Problems Detected / Conflicts in View: only referencing file is mentioned

Fixes

• KT-9054 Copy / pasting a Kotlin file should bring up the Copy Class dialog
• KT-13437 Change signature replaces return type with Unit when it's not requested
• KT-15859 Renaming variables or functions with backticks removes the backticks
• KT-16180 Opened decompiled editor blocks refactoring of involved element
• KT-17062 Field/property inline refactoring works incorrectly with Kotlin & Java usages
• KT-17128 Refactor / Rename in the last position of label name throws Throwable "PsiElement(IDENTIFIER) by com.intellij.refactoring.rename.inplace.MemberInplaceRenamer" at InplaceRefactoring.buildTemplateAndStart()
• KT-17489 Refactor / Inline Property: cannot inline val with the following plusAssign
• KT-17571 Refactor / Move warns about using private/internal class from Java, but this is not related to the move
• KT-17622 Refactor / Inline Function loses type arguments
• KT-18034 Copy Class refactoring replaces all usages of the class with the new one!
• KT-18076 Refactor / Rename on alias of Java class suggests to select between refactoring handlers
• KT-18096 Refactor / Rename on import alias usage of a class member element tries to rename the element itself
• KT-18098 Refactor / Copy can't generate proper import if original code uses import alias of java member
• KT-18135 Refactor: no Problems Detected for Copy/Move source using platform type to another platform's module
• KT-18200 Refactor / Copy is enabled for Java source selected with Kotlin file, but not for Java source selected with Kotlin class
• KT-18241 Refactor / Copy (and Move) fails for chain of lambdas and invoke()'s with IllegalStateException: "No selector for PARENTHESIZED" at KtSimpleNameReference.changeQualifiedName()
• KT-18325 Renaming a parameter name in one implementation silently rename it in all implementations
• KT-18390 Refactor / Copy called for Java class opens only Copy File dialog
• KT-18699 Refactor / Copy, Move loses necessary parentheses
• KT-18738 Misleading quick fix message for an 'open' modifier on an interface member
• KT-19130 Refactor / Inline val: "Show inline dialog for local variables" setting is ignored

JavaScript

Performance Improvements

• KT-18331 JS: compilation performance degrades fast when inlined nested labels are used

Fixes

• KT-4078 JS sourcemaps should contain relative path. The relative base & prefix should be set from project/module preferences
• KT-8020 JS: String? plus operator crashes on runtime
• KT-13919 JS: Source map weirdness
• KT-15456 JS: inlining doesn't work for array constructor with size and lambda
• KT-16984 KotlinJS - 1 > 2 > false causes unhandled javascript exception
• KT-17285 JS: wrong result when call function with default parameter overridden by delegation by function from another interface
• KT-17445 JS: minifier for Kotlin JS apps
• KT-17476 JS: Some symbols in identifiers compile, but are not legal
• KT-17871 JS: spread vararg call doesn't work on functions imported with @JsModule
• KT-18027 JS: Illegal symbols are possible in backticked labels, but cause crash in runtime and malformed js code
• KT-18032 JS: Illegal symbols are possible in backticked package names, but cause crash in runtime and malformed js code
• KT-18169 JS: reified generic backticked type name containing non-identifier symbols causes malformed JS and runtime crash
• KT-18187 JS backend does not copy non-abstract method of interface to implementing class in some cases
• KT-18201 JS backend generates wrong code for inline function which calls non-inline function from another module
• KT-18652 JS: Objects from same package but from different libraries are incorrectly accessed

Libraries

• KT-18526 Small typo in documentation for kotlin-stdlib / kotlin.collections / retainAll
• KT-18624 JS: Bad return type for Promise.all
• KT-18670 Incorrect documentation of MutableMap.values
• KT-18671 Provide implementation for CoroutineContext.Element functions.

Reflection

• KT-15222 Support reflection for local delegated properties
• KT-14094 IllegalAccessException when try to get members annotated by private annotation with parameter
• KT-16399 Embedded Tomcat fails to load Class-Path: kotlin-runtime.jar from kotlin-reflect-1.0.6.jar
• KT-16810 Do not include incorrect ExternalOverridabilityCondition service file into kotlin-reflect.jar
• KT-18404 “KotlinReflectionInternalError: This callable does not support a default call” when function or constructor has more than 32 parameters
• KT-18476 KClass<*>.superclasses does not contain Any::class
• KT-18480 Kotlin Reflection unable to call getter of protected read-only val with custom getter from parent class

Tools

• KT-18245 NoArg: IllegalAccessError on instantiating sealed class child via Java reflection
• KT-18874 Crash during compilation after switching to 1.1.3-release-IJ2017.2-2
• KT-19047 Private methods are final event if used with the all-open-plugin.

Tools. CLI

• KT-17297 Report error when CLI compiler is not being run under Java 8+
• KT-18599 Support -Xmodule-path and -Xadd-modules arguments for modular compilation on Java 9
• KT-18794 kotlinc-jvm prints an irrelevant error message when a JVM Home directory does not exist
• KT-3045 Report error instead of failing with exception on "kotlinc -script foo.kt"
• KT-18754 Rename CLI argument "-module" to "-Xbuild-file"
• KT-18927 run kotlin app crashes eclipse

Tools. Gradle

• KT-10537 Gradle plugin doesn't pick up changed project.buildDir
• KT-17031 JVM crash on in-process compilation in Gradle with debug
• KT-17035 Gradle Kotlin Plugin can not compile tests calling source internal fields/variables if compileJava dumps classes to a different directory and then copied classes are moved to sourceSets.main.output.classesDir by a different task
• KT-17197 Gradle Kotlin plugin does not wire task dependencies correctly, causing compilation failures
• KT-17618 Pass freeCompilerArgs to compiler unchanged
• KT-18262 kotlin-spring should also open @SpringBootTest classes
• KT-18647 Kotlin incremental compile cannot be disabled.
• KT-18832 Java version parsing error with Gradle Kotlin plugin + JDK 9

Tools. J2K

• KT-10762 J2K removes empty lines from Doc-comments
• KT-13146 J2K goes into infinite loop with anonymous inner class that references itself
• KT-15761 Converting Java to Kotlin corrupts string which includes escaped backslash
• KT-16133 Converting switch statement inserts dead code (possibly as a false positive for fall-through)
• KT-16142 Kotlin Konverter produces empty line in Kdoc
• KT-18038 Java to Kotlin converter messes up empty lines while converting from JavaDoc to KDoc
• KT-18051 Doesn't work the auto-convert Java to Kotlin in Android Studio 3.0
• KT-18141 J2K changes semantic when while does not have a body
• KT-18142 J2K changes semantics when if does not have a body
• KT-18512 J2K Incorrect null parameter conversion

Tools. JPS

• KT-14848 JPS: invalid compiler argument causes exception (see also EA-92062)
• KT-16057 Provide better error message when the same compiler argument is set twice
• KT-19155 IllegalArgumentException: Unsupported kind: PACKAGE_LOCAL_VARIABLE_LIST in incremental compilation

Tools. Maven

• KT-18022 kotlin maven plugin - adding dependencies overwrites arguments.pluginClassPath preventing kapt goal from running
• KT-18224 Maven compilation with JDK 9 fails with InaccessibleObjectException

Tools. REPL

• KT-5620 REPL: Support destructuring declarations
• KT-12564 Kotlin REPL Doesn't Perform Many Checks
• KT-15172 REPL: function declarations that contain empty lines throw error
• KT-18181 REPL: support non-headless execution for Swing code
• KT-18349 REPL: do not show warnings when there are errors

Tools. kapt

• KT-18682 Kapt: Anonymous class types are not rendered properly in stubs
• KT-18758 Kotlin 1.1.3 / Kapt fails with gradle
• KT-18799 Kapt3, IC: Kapt does not generate annotation value for constant values in documented types
• KT-19178 Kapt: Build dependencies from 'kapt' configuration should go into the 'kaptCompile' task dependencies
• KT-19179 Kapt: Gradle silently skips 'kotlinKapt' task sometimes
• KT-19211 Kapt3: Generated classes output is not synchronized with Java classes output in pure Java projects (Gradle 4+)

1.1.3-2

Fixes

• Noarg compiler plugin reverted to 1.1.2 behavior: by default, it will not run any initialization code from the generated default constructor. If you want to run initializers, you need to enable the corresponding option as described in the documentation. Note that if a @noarg class has initializers that depend on constructor parameters, you will get incorrect compiler behavior, so you shouldn't enable this option if you have such classes in your project. This resolves KT-18667 and KT-18668.
• KT-18689 Incorrect bytecode generated when passing a bound member reference to an inline function with default argument values
• KT-18377 Syntax error while generating kapt stubs
• KT-18411 Slow debugger step-in into inlined function
• KT-18687 Deadlock in resolve with Kotlin 1.1.3
• KT-18726 Frequent UI hangs in 2017.2 EAPs

1.1.3

Android

New Features

• KT-12049 Kotlin Lint: "Missing Parcelable CREATOR field" could suggest "Add implementation" quick fix
• KT-16712 Show warning in IDEA when using Java 1.8 api in Android
• KT-16843 Android: provide gutter icons for resources like colors and drawables
• KT-17389 Implement Intention "Add Activity / BroadcastReceiver / Service to manifest"
• KT-17465 Add intentions Add/Remove/Redo parcelable implementation

Fixes

• KT-14970 ClassCastException: butterknife.lint.LintRegistry cannot be cast to com.android.tools.klint.client.api.IssueRegistry
• KT-17287 Configure kotlin in Android Studio: don't show menu Choose Configurator with single choice
• KT-17288 Android Studio: please remove menu item Configure Kotlin (JavaScript) in Project
• KT-17289 Android Studio: Hide "Configure Kotlin" balloon if Kotlin is configured from a kt file banner
• KT-17291 Android Studio 2.4: Cannot get property 'metaClass' on null object error after Kotlin configuring
• KT-17610 "Unknown reference: kotlinx"

Compiler

New Features

• KT-11167 Support compilation against JRE 9
• KT-17497 Warn about redundant else branch in exhaustive when

Performance Improvements

• KT-7931 Optimize iteration over strings/charsequences on JVM
• KT-10848 Optimize substitution of inline function with default parameters
• KT-12497 Optimize inlined bytecode for functions with default parameters
• KT-17342 Optimize control-flow for case of many variables
• KT-17562 Optimize KtFile::isScript

Fixes

• KT-4960 Redeclaration is not reported for type parameters of interfaces
• KT-5160 No warning when a lambda parameter hides a variable
• KT-5246 is check fails on cyclic type parameter bounds
• KT-5354 Wrong label resolution when label name clash with fun name
• KT-7645 Prohibit default value for catch-block parameter
• KT-7724 Can never import private member
• KT-7796 Wrong scope for default parameter value resolution
• KT-7984 Unexpected "Unresolved reference" in a default value expression in a local function
• KT-7985 Unexpected "Unresolved reference to a type parameter" in a default value expression in a local function
• KT-8320 It should not be possible to catch a type parameter type
• KT-8877 Automatic labeling doesn't work for infix calls
• KT-9251 Qualified this does not work with labeled function literals
• KT-9551 False warning "No cast needed"
• KT-9645 Incorrect inspection: No cast Needed
• KT-9986 'null as T' should be unchecked cast
• KT-10397 java.lang.reflect.GenericSignatureFormatError when generic inner class is mentioned in function signature
• KT-11474 ISE: Requested A, got foo.A in JavaClassFinderImpl on Java file with package not matching directory
• KT-11622 False "No cast needed" when ambiguous call because of smart cast
• KT-12245 Code with annotation that has an unresolved identifier as a parameter compiles successfully
• KT-12269 False "Non-null type is checked for instance of nullable type"
• KT-12683 A problem with is operator and non-reified type-parameters
• KT-12690 USELESS_CAST compiler warning may break code when fix is applied
• KT-13348 Report useless cast on safe cast from nullable type to the same not null type
• KT-13597 No check for accessing final field in local object in constructor
• KT-13997 Incorrect "Property must be initialized or be abstract" error for property with external accessors
• KT-14381 Possible val reassignment not detected inside init block
• KT-14564 java.lang.VerifyError: Bad local variable type
• KT-14801 Invoke error message if nested class has the same name as a function from base class
• KT-14977 IDE doesn't warn about checking null value of variable that cannot be null
• KT-15085 Label and function naming conflict is resolved in unintuitive way
• KT-15161 False warning "no cast needed" for array creation
• KT-15480 Cannot destruct a list when "if" has an "else" branch
• KT-15495 Internal typealiases in the same module are inaccessible on incremental compilation
• KT-15566 Object member imported in file scope used in delegation expression in object declaration should be a compiler error
• KT-16016 Compiler failure with NO_EXPECTED_TYPE
• KT-16426 Return statement resolved to function instead of property getter
• KT-16813 Anonymous objects returned from private-in-file members should behave as for private class members
• KT-16864 Local delegate + ad-hoc object leads to CCE
• KT-17144 Breakpoint inside when
• KT-17149 Incorrect warning "Kotlin: This operation has led to an overflow"
• KT-17156 No re-parse after lambda was converted to block
• KT-17318 Typo in DSL Marker message cant
• KT-17384 break/continue expression in inlined function parameter argument causes compilation exception
• KT-17457 Suspend + LongRange couldn't transform method node issue in Kotlin 1.1.1
• KT-17479 val reassign is allowed via explicit this receiver
• KT-17560 Overload resolution ambiguity on semi-valid class-files generated by Scala
• KT-17572 try-catch expression in inlined function parameter argument causes compilation exception
• KT-17573 try-finally expression in inlined function parameter argument fails with VerifyError
• KT-17588 Compiler error while optimizer tries to get rid of captured variable
• KT-17590 conditional return in inline function parameter argument causes compilation exception
• KT-17591 non-conditional return in inline function parameter argument causes compilation exception
• KT-17613 'this' expression referring to deprecated class instance is highlighted as deprecated in IDE
• KT-18358 Keep smart pointers instead of PSI elements in JavaElementImpl and its descendants

IDE

New Features

• KT-7810 Separate icon for abstract class
• KT-8617 Recognize TODO method usages and highlight them same as TODO-comment
• KT-12629 Add rainbow/semantic-highlighting for local variables
• KT-14109 support parameter hints in idea plugin
• KT-16645 Support inlay type hints for implicitly typed vals, properties, and functions
• KT-17807 Add Smart Enter processor for object expessions

Performance Improvements

• KT-16995 Typing during in-place refactorings is impossibly laggy
• KT-17331 Frequent long editor freezes
• KT-17383 Slow editing in Kotlin files If breadcrumbs are enabled in module with many dependencies
• KT-17495 Much time spent in LibraryDependenciesCache.getLibrariesAndSdksUsedWith

Fixes

• KT-7848 When you paste text into a string literal special symbols should be escaped
• KT-7954 'Go to symbol' doesn't show containing declaration for local symbols
• KT-9091 Sometimes backticks of the method name with spaces are highlighted with rose background
• KT-10577 Refactor / Move Kotlin + Java files adds wrong import in very specific case
• KT-12856 Import fold region is not updated to include imports added while editing file
• KT-14161 Navigate to symbol doesn't see local named functions
• KT-14601 Formatter inserts unnecessary indent before 'else'
• KT-14639 Incorrect name of code style setting: Align in columns 'case' branches
• KT-15029 "Go to symbol" action doesn't find properties declared in primary constructors
• KT-15255 Move cursor to a better place when creating a new Kotlin file
• KT-15273 Kotlin IDE plugin adds import java.lang.String with "Optimize Imports", making project broken
• KT-16159 Wrong "Constructor call" highlighting if operator is called on newly created object
• KT-16392 Gradle/Maven java module: Add framework support/ Kotlin (Java or JavaScript) adds nothing
• KT-16423 Show expression type doesn't work when selecting from the middle of expression with "Expand Selection"
• KT-16635 Do not show kotlin-specific live templates macros for all context types
• KT-16755 No "Is sublassed by" icon for sealed class
• KT-16775 Rewrite at slice CLASS key: OBJECT_DECLARATION while writing code in IDE
• KT-16803 Suspending iteration is not marked in the gutter by IDEA as suspending invocation
• KT-17037 Editor suggests to import EmptyCoroutineContext.plus for any unresolved +
• KT-17046 Kotlin facet, Compiler plugins: last line is shown empty when not selected
• KT-17088 Settings: Kotlin Compiler: "Destination directory" should be enabled if "Copy library runtime files" is on on the dialog opening
• KT-17094 Kotlin facet, additional command line parameters dialog: please provide a title
• KT-17138 Configure Kotlin in Project: Choose Configurator popup: names could be unified
• KT-17145 Kotlin facet: IllegalArgumentException on attempt to show settings common for several javascript kotlin facets with different moduleKind
• KT-17223 Absolute path to Kotlin compiler plugin in IML
• KT-17293 Project Structure dialog is opened too slow for a project with a lot of empty gradle modules
• KT-17304 IDEA shows wrong type for expressions
• KT-17439 Kotlin: 'autoscroll from source' doesn't work in Structure view
• KT-17448 Regression: Sample Resolve
• KT-17482 Set jvmTarget to 1.8 by default when configuring a project with JDK 1.8
• KT-17492 -jvm-target is ignored by IntelliJ
• KT-17505 LazyLightClassMemberMatchingError from collection implementation
• KT-17517 Compiler options specified as properties are not handled by Maven importer
• KT-17521 Quickfix to enable coroutines should work for Maven projects
• KT-17525 IDE: KNPE at KotlinAddImportActionKt.createSingleImportActionForConstructor() on invalid reference to inner class constructor
• KT-17578 Throwable: "Reported element PsiIdentifier:AnnotationConfiguration is not from the file 'PsiFile:InSource.kt' the inspection 'ImplicitSubclassInspection'"
• KT-17638 ISE in KotlinElementDescriptionProvider.renderShort
• KT-17698 Unknown library format - prevents IDEA from configuring Kotlin JS
• KT-17714 UAST inspection on non-physical element
• KT-17722 IntelliJ plugin uses wrong JVM target when Kotlin Facet is not configured
• KT-17770 Kotlin IntelliJ plugin fails to re-index Gradle script classpath after change to the plugins block
• KT-17777 Logger$EmptyThrowable: "Facet Kotlin (app) [kotlin-language] not found" at FacetModelImpl.removeFacet()
• KT-17810 Exception from unused import inspection leads to code analysis hangs
• KT-17821 In Kotlin's plugin KotlinJsMetadataVersionIndex loads file with VfsUtilCore.loadText
• KT-17840 Show expression type on this shows bogus disambiguation
• KT-17845 Searching for usages of override property in primary constructor doesn't suggest base property search
• KT-17847 Kotlin facet: strange warning if API version = 1.2
• KT-17857 Java should see classes affected by "allopen" plugin as open
• KT-17861 Setting 'kotlin.experimental.coroutines "enable"' doesn't work for Android projects
• KT-17875 New Project/Module with Kotlin: on attempt to use libraries from plugin IDE suggests to rewrite them
• KT-17876 New Project/Module with Kotlin: with "Copy to" option only part of jars are copied
• KT-17899 Navigate to symbol: vararg signatures are indistinguishable from non-vararg ones
• KT-18070 KtLightModifierList.hasExplicitModifier("default") is true for interface method with body

IDE. Completion

New Features

• KT-11250 Auto-completion for convention function names in 'operator fun' definitions
• KT-12293 Autocompletion should propose lateinit var in addition to lateinit
• KT-13673 Add 'companion { ... }' code completion opsion

Performance Improvements

• KT-10978 Kotlin + JOOQ + Intellij performance is unusable
• KT-16715 Typing is very slow since 1.1
• KT-16850 UI freeze for several seconds during inserting selected completion variant

Fixes

• KT-13524 Completing the keyword 'constructor' before a primary constructor wrongly inserts parentheses
• KT-14665 No completion for "else" keyword
• KT-15603 Annoying completion when making a primary constructor private
• KT-16161 Completion of 'onEach' inserts unneeded angular brackets
• KT-16856 Code completion optimization

IDE. Debugger

• KT-15823 Breakpoints not work inside crossinline from init of object passed into collection
• KT-15854 Debugger not able to evaluate internal member functions
• KT-16025 Step into suspend functions stops at the function end
• KT-17295 Can't stop in kotlin.concurrent.timer lambda parameter

IDE. Inspections and Intentions

New Features

• KT-10981 Quickfix for INAPPLICABLE_JVM_FIELD to replace with 'const' when possible
• KT-14046 Add intention to add inline keyword if a function has parameter with noinline and/or crossinline modifier
• KT-14137 Add intention to convert top level val with object expression to object
• KT-15903 QuickFix to add/remove suspend in hierarchies
• KT-16786 Intention to add "open" modifier to a non-private method or property in an open class
• KT-16851 Quickfix adding qualifier @call to unallowed 'return' in closures
• KT-17053 Inspection to detect use of callable reference as a lambda body
• KT-17054 Intention/ inspection to convert 'if' with 'is' check to 'as?' with safe call
• KT-17191 Intention to name anonymous (_) parameter
• KT-17221 Inspection for recursive calls in property accessors
• KT-17520 Quickfix to update language/API version should work for Maven projects
• KT-17650 Add quickfix inserting 'lateinit' modifier for not-initialized property
• KT-17660 Inspection: data class copy without named argument(s)

Fixes

• KT-10211 "Replace infix call with ordinary call" appears both as a quickfix and as an intention in the pop-up
• KT-11003 Invalid quickfix in companion object for open properties
• KT-12805 False positive redundant semicolon after while without block expression
• KT-14335 Unexpected range of "convert lambda to reference" intention
• KT-14435 "Use destructuring declaration" should be available as intention even without usages
• KT-14443 IDEA intention suggest to make a method in an interface final
• KT-14820 Convert function to property shouldn't insert explicit type if it was inferred previously
• KT-15076 Replace if with elvis inspection should not be reported in some complex cases
• KT-15543 "Convert receiver to parameter" refactoring breaks code
• KT-15942 "Convert to secondary constructor" intention is available for data class
• KT-16136 Wrong type parameter variance suggested if type parameter is used in nested anonymous object
• KT-16339 Incorrect warning: 'protected' visibility is effectively 'private' in a final class
• KT-16577 "Redundant semicolon" is not reported for semicolon after package statement in file with no imports
• KT-17079 Kotlin: Bad conversion of double comparison to range check if bounds have mixed types
• KT-17372 Specify explicit lambda signature handles anonymous parameters incorrectly
• KT-17404 Editor: attempt to pass type parameter as reified argument causes AE "Classifier descriptor of a type should be of type ClassDescriptor" at DescriptorUtils.getClassDescriptorForTypeConstructor()
• KT-17408 "Convert to secondary constructor" intention is available for annotation parameters
• KT-17503 Intention "To raw string literal" should handle string concatenations
• KT-17599 "Make primary constructor internal" intention is available for annotation class
• KT-17600 "Make primary constructor private" intention is available for annotation class
• KT-17707 "Final declaration can't be overridden at runtime" inspection reports Kotlin classes non final due to compiler plugin
• KT-17708 "Move to class body" intention is available for annotation parameters
• KT-17762 'Convert to range' intention generates inequivalent code for doubles

IDE. Refactorings

Performance Improvements

• KT-17234 Refactor / Inline on library property is rejected after GUI freeze for a while
• KT-17333 KotlinChangeInfo retains 132MB of the heap

Fixes

• KT-8370 "Can't move to original file" should not be an error
• KT-8930 Refactor / Move preivew: moved element is shown as reference, and its file as subject
• KT-9158 Refactor / Move preview mentions the package statement of moved class as a usage
• KT-13192 Refactor / Move: to another class: "To" field code completion suggests facade and Java classes
• KT-13466 Refactor / Move: class to upper level: the package statement is not updated
• KT-15519 KDoc comments for data class values get removed by Change Signature
• KT-17211 Refactor / Move several files: superfluous FQN is inserted into reference to same file's element
• KT-17213 Refactor / Inline Function: parameters of lambda as call argument turn incompilable
• KT-17272 Refactor / Inline Function: unused String literal in parameters is kept (while unsed Int is not)
• KT-17273 Refactor / Inline Function: PIEAE: "Element: class org.jetbrains.kotlin.psi.KtCallExpression because: different providers" at PsiUtilCore.ensureValid()
• KT-17296 Refactor / Inline Function: UOE at ExpressionReplacementPerformer.findOrCreateBlockToInsertStatement() for call of multi-statement function in declaration
• KT-17330 Inline kotlin function causes an infinite loop
• KT-17395 Refactor / Inline Function: arguments passed to lambda turns code to incompilable
• KT-17496 Refactor / Move: calls to moved extension function type properties are updated (incorrectly)
• KT-17515 Refactor / Move inner class to another class, Move companion object: disabled in editor, but available in Move dialog
• KT-17526 Refactor / Move: reference to companion member gets superfluous companion name in certain cases
• KT-17538 Refactor / Move: moving file with import alias removes alias usage from code
• KT-17545 Refactor / Move: false Problems Detected on moving class using parent's protected class, object
• KT-18018 F5 (for Copy) does not work for Kotlin files anymore
• KT-18205 Moving multiple classes causes imports to be converted to fully qualified class names

Infrastructure

• KT-14988 Support running the Kotlin compiler on Java 9
• KT-17112 IncompatibleClassChangeError on invoking Kotlin compiler daemon on JDK 9

JavaScript

Fixes

• KT-12926 JS: use # instead of @ when linking to sourcemap from generated code
• KT-13577 Double.hashCode is zero for big numbers
• KT-15135 JS: support friend modules
• KT-15484 JS: (node): println with object /number argument leads to "TypeError: Invalid data, chunk must be a string or buffer, not object/number"
• KT-16658 JS: Suspend function with default param value in interface
• KT-16717 KotlinJs - copy() on data class doesn't work with when there is a secondary constructor
• KT-16745 JS: initialize enum fields before calling companion objects's initializer
• KT-16951 JS: coroutine suspension point is not inserted when inlining suspend function with tail call to another suspend function
• KT-16979 Kotlin.js : Intellij test and productions sources produce a AMD module with the same name
• KT-17067 JS: suspendCoroutine not working as expected
• KT-17219 Hexadecimal literals in js(...) argument are replaced by wrong decimal constants
• KT-17281 JS: wrong code generated for a recursive call in suspend function
• KT-17446 JS: incorrect code generated for call to suspendCoroutineOrReturn when the same function calls another suspend function
• KT-17540 Incorrect inlining optimization of also/apply function
• KT-17700 Wrong code generated for 'str += (nullableChar ?: break)'
• KT-17966 JS: Char literal inside of string template

Libraries

• KT-17453 Array iterators throw IndexOutOfBoundsException instead of NoSuchElementException
• KT-17635 Document String#toIntOfNull may throw an exception
• KT-17686 takeLast(n) incorrectly performs drop(n) for Lists without random access
• KT-17704 Update JavaDoc for ReentrantReadWriteLock.write to put more stress on the fact that to upgrade to write lock, read lock is first released.
• KT-17853 JS: Confusing parameter names in 'Math.atan2`
• KT-18092 Issue using kotlin-reflect with proguard: missing annotations Mutable and ReadOnly
• KT-18210 JS String::match(regex) should have nullable return type

Reflection

• KT-17055 NPE in hashCode and equals of kotlin.jvm.internal.FunctionReference (on local functions)
• KT-17594 Cache the result of val Class.kotlin: KClass
• KT-18494 KNPE from Kotlin reflection (sometimes) in UtilKt.toJavaClass

Tools

• KT-16692 No-Arg-Constructor plugin should generate code to initialize delegates

Tools. CLI

• KT-17696 Allow kotlinc to take friend modules as .jar files
• KT-17697 Allow kotlinc to take .java files as arguments
• KT-9370 not possible to pass an argument that starts with "-" to a script using kotlinc
• KT-17100 "kotlin" launcher script: do not add current working directory to classpath if explicit "-classpath" is specified
• KT-17140 Warning "classpath entry points to a file that is not a jar file" could just be disabled
• KT-17264 Change the format of advanced CLI arguments ("-X...") to require value after "=", not a whitespace
• KT-18180 Modules not exported by java.se are not readable when compiling against JRE 9

Tools. Gradle

• KT-15151 Kapt3: Support incremental compilation of Java stubs
• KT-16298 Gradle: IOException "Parent file doesn't exist:/.../artifact-difference.tab.len" on non-incremental clean after incremental build
• KT-17681 Support the new API of Android Gradle plugin (2.4.0+)
• KT-17936 Circular dependency between gradle tasks dataBindingExportBuildInfoDebug and compileDebugKotlin
• KT-17960 Improve test of memory leak with Gradle daemon
• KT-18047 Gradle kotlin options should use unset value as default for languageVersion and apiVersion

Tools. J2K

• KT-16754 J2K: Apply quick-fixes from EDT thread only
• KT-16816 Java To Kotlin bug: if + chained assignment doesn't include brackets
• KT-17230 J2K Deadlock
• KT-17712 Exception in J2K during InlineCodegen convertion: com.intellij.psi.impl.source.JavaDummyHolder cannot be cast to com.intellij.psi.PsiJavaFile

Tools. JPS

• KT-16568 modulesWhoseInternalsAreVisible in ModuleDependencies are not filled in for JS projects
• KT-17387 When compiling in the IDE, progress tracker says "configuring the compilation environment" when it clearly isn't
• KT-17665 JPS: Kotlin: The '-d' option with a directory destination is ignored because '-module' is specified
• KT-17801 Unresolved supertypes from JRE on JDK 9 in JPS

Tools. Maven

• KT-17093 Import from maven: please provide a special tag for coroutine option
• KT-10028 Support parallel builds in maven
• KT-15050 Random build failures using maven 3 (multi-thread) + bamboo
• KT-15318 Intermitent Kotlin compilation errors
• KT-16283 Maven compiler plugin warns, "Source root doesn't exist"
• KT-16743 Update configuration options in Kotlin Maven plugin
• KT-16762 Maven: JS compiler option main is missing

Tools. REPL

• KT-5822 Exception on package directive in REPL
• KT-10060 REPL: Cannot execute more than 255 lines
• KT-17365 REPL crash when referencing a variable whose definition threw an exception

Tools. kapt

• KT-17245 Kapt: Javac compiler arguments can't be specified in Gradle
• KT-17418 "The following options were not recognized by any processor: '[kapt.kotlin.generated]'" warning from Javac shouldn't be shown even if no processor supports the generated annotation
• KT-17456 kapt3: NoClassDefFound com/sun/tools/javac/util/Context
• KT-17567 Kapt (1.1.2-eap-77) generates invalid Java stub for internal class
• KT-17620 Kapt3 IC: avoid running AP when API is not changed
• KT-17959 Kapt3 doesn't preserve method parameter names for abstract methods
• KT-17999 Cannot use KAPT3 1.1.2-4 in Android Studio java libs (null TypeCastException to WrappedVariantData<*> on Gradle Sync)

1.1.2

Compiler

Front-end

• KT-16113 Support destructuring parameters of suspend lambda with suspend componentX
• KT-3805 Report error on double constants out of range
• KT-6014 Wrong ABSTRACT_MEMBER_NOT_IMPLEMENTED for toString implemented by delegation
• KT-8959 Missing diagnostic when trying to call inner class constructor qualificated with outer class name
• KT-12477 Do not report 'const' inapplicability on property of error type
• KT-11010 NDFDE for local object with type parameters
• KT-12881 Descriptor wasn't found for declaration TYPE_PARAMETER
• KT-13342 Unqualified super call should not resolve to a method of supertype overriden in another supertype
• KT-14236 Allow to use emptyArray in annotation
• KT-14536 IllegalStateException: Type parameter T not found for lazy class Companion at LazyDeclarationResolver visitTypeParameter
• KT-14865 Throwable exception at KotlinParser parseLambdaExpression on typing { inside a string inside a lambda
• KT-15516 Compiler error when passing suspending extension-functions as parameter and casting stuff to Any
• KT-15802 Java constant referenced using subclass is not considered a constant expression
• KT-15872 Constant folding is mistakenly triggered for user function
• KT-15901 Unstable smart cast target after type check
• KT-15951 Callable reference to class constructor from object is not resolved
• KT-16232 Prohibit objects inside inner classes
• KT-16233 Prohibit inner sealed classes
• KT-16250 Import methods from typealias to object throws compiler exception "Should be class or package: typealias"
• KT-16272 Missing deprecation and SinceKotlin-related diagnostic for variable as function call
• KT-16278 Public member method can't be used for callable reference because of private static with the same name
• KT-16372 'mod is deprecated' warning should not be shown when language version is 1.0
• KT-16484 SimpleTypeImpl should not be created for error type: ErrorScope
• KT-16528 Error: Loop in supertypes when using Java classes with type parameters having raw interdependent supertypes
• KT-16538 No smart cast when equals is present
• KT-16782 Enum entry is incorrectly forbidden on LHS of '::' with language version 1.0
• KT-16815 Assertion error from compiler: unexpected classifier: class DeserializedTypeAliasDescriptor
• KT-16931 Compiler cannot see inner class when for outer class exist folder with same name
• KT-16956 Prohibit using function calls inside default parameter values of annotations
• KT-8187 IAE on anonymous object in the delegation specifier list
• KT-8813 Do not report unused parameters for anonymous functions
• KT-12112 Do not consider nullability of error functions and properties for smart casts
• KT-12276 No warning for unnecessary non-null assertion after method call with generic return type
• KT-13648 Spurious warning: "Elvis operator (?:) always returns the left operand of non-nullable type (???..???)"
• KT-16264 Forbid usage of _ without backticks
• KT-16875 Decrease severity of unused parameter in lambda to weak warning
• KT-17136 ModuleDescriptorImpl.allImplementingModules should be evaluated lazily
• KT-17214 Do not show warning about useless elvis for error function types
• KT-13740 Plugin crashes at accidentally wrong annotation argument type
• KT-17597 Pattern::compile resolves to private instance method in 1.1.2

Back-end

• KT-8689 NoSuchMethodError on local functions inside inlined lambda with variables captured from outer context
• KT-11314 Abstract generic class with Array<Array> parameter compiles fine but fails at runtime with "Bad type on operand stack" VerifyError
• KT-12839 Two null checks are generated when manually null checking platform type
• KT-14565 Cannot pop operand off empty stack when compiling enum class
• KT-14566 Make kotlin.jvm.internal.Ref$...Ref classes serializable
• KT-14567 VerifyError: Bad type on operand stack (generics with operator methods)
• KT-14607 Incorrect class name "ava/lang/Void from AsyncTask extension function
• KT-14811 Unecessary checkcast generated in parameterized functions.
• KT-14963 unnecessary checkcast java/lang/Object
• KT-15105 Comparing Chars in a Pair results in ClassCastException
• KT-15109 Subclass from a type alias with named parameter in constructor will produce compiler exception
• KT-15192 Compiler crashes on certain companion objects: "Error generating constructors of class Companion with kind IMPLEMENTATION"
• KT-15424 javac crash when calling Kotlin function having generic varargs with default and @JvmOverloads
• KT-15574 Can't instantiate Array through Type Alias
• KT-15594 java.lang.VerifyError when referencing normal getter in @JvmStatic getters inside an object
• KT-15759 tailrec suspend function fails to compile
• KT-15862 Inline generic functions can unexpectedly box primitives
• KT-15871 Unnecessary boxing for equality operator on inlined primitive values
• KT-15993 Property annotations are stored in private fields and killed by obfuscators
• KT-15997 Reified generics don't work properly with crossinline functions
• KT-16077 Redundant private getter for private var in a class within a JvmMultifileClass annotated file
• KT-16194 Code with unnecessary safe call contains redundant boxing/unboxing for primitive values
• KT-16245 Redundant null-check generated for a cast of already non-nullable value
• KT-16532 Kotlin 1.1 RC - Android cross-inline synchronized won't run
• KT-16555 VerifyError: Bad type on operand stack
• KT-16713 Insufficient maximum stack size
• KT-16720 ClassCastException during compilation
• KT-16732 Type 'java/lang/Number' (current frame, stack[0]) is not assignable to 'java/lang/Character
• KT-16929 VerifyError when using bound method reference on generic property
• KT-16412 Exception from compiler when try call SAM constructor where argument is callable reference to nested class inside object
• KT-17210 Smartcast failure results in "Bad type operand on stack" runtime error

Tools

• KT-15420 Maven, all-open plugin: in console the settings of all-open are always reported as empty
• KT-11916 Provide incremental compilation for Maven
• KT-15946 Kotlin-JPA plugin support for @Embeddable
• KT-16627 Do not make private members open in all-open plugin
• KT-16699 Script resolving doesn't work with custom templates located in an external jar
• KT-16812 import in .kts file does not works
• KT-16927 Using KotlinJsr223JvmLocalScriptEngineFactory causes multiple warnings
• KT-15562 Service is dying
• KT-17125 > Failed to apply plugin [id 'kotlin'] > For input string: “”

Kapt

• KT-12432 Dagger 2 does not generate Component which was referenced from Kotlin file.
• KT-8558 KAPT only works with service-declared annotation processors
• KT-16753 kapt3 generates invalid stubs when IC is enabled
• KT-16458 kotlin-kapt / kapt3: "cannot find symbol" error for companion object with same name as enclosing class
• KT-14478 Add APT / Kapt support to the maven plugin
• KT-14070 Kapt3: kapt doesn't compile generated Kotlin files and doesn't use the "kapt.kotlin.generated" folder anymore
• KT-16990 Kapt3: java.io.File cannot be cast to java.lang.String
• KT-16965 Error:Kotlin: Multiple values are not allowed for plugin option org.jetbrains.kotlin.kapt:output
• KT-16184 AbstractMethodError in Kapt3ComponentRegistrar while compiling from IntelliJ 2016.3.4 using Kotlin 1.1.0-beta-38

Gradle

• KT-15084 Navigation into sources of gradle-script-kotlin doesn't work
• KT-16003 Gradle Plugin Fails When Run From Jenkins On Multiple Nodes
• KT-16585 Kotlin Gradle Plugin makes using Gradle Java incremental compiler not work
• KT-16902 Gradle plugin compilation on daemon fails on Linux ARM
• KT-14619 Gradle: The '-d' option with a directory destination is ignored because '-module' is specified
• KT-12792 Automatically configure standard library dependency and set its version equal to compiler version if not specified
• KT-15994 Compiler arguments are not copied from the main compile task to kapt task
• KT-16820 Changing compileKotlin.destinationDir leads to failure in :copyMainKotlinClasses task due to an NPE
• KT-16917 First connection to daemon after start timeouts when DNS is slow
• KT-16580 Kotlin gradle plugin cannot resolve the kotlin compiler

Android support

• KT-16624 Implement quickfix "Add TargetApi/RequiresApi annotation" for Android api issues
• KT-16625 Implement quickfix "Surround with if (VERSION.SDK_INT >= VERSION_CODES.SOME_VERSION) { ... }" for Android api issues
• KT-16840 Kotlin Gradle plugin fails with Android Gradle plugin 2.4.0-alpha1
• KT-16897 Gradle plugin 1.1.1 duplicates all main classes into Android instrumentation test APK
• KT-16957 Android Extensions: Support Dialog class
• KT-15023 Android gradle installDebugAndroidTest fails unless you first call gradle assembleDebugAndroidTest
• KT-12769 "Name for method must be provided" error occurs on trying to use spaces in method name in integration tests in Android
• KT-12819 Kotlin Lint: False positive for "Unconditional layout inflation" when using elvis operator
• KT-15116 Kotlin Lint: problems in property accessors are not reported
• KT-15156 Kotlin Lint: problems in annotation parameters are not reported
• KT-15179 Kotlin Lint: problems inside local function are not reported
• KT-14870 Kotlin Lint: problems inside local class are not reported
• KT-14920 Kotlin Lint: "Android Lint for Kotlin | Incorrect support annotation usage" inspection does not report problems
• KT-14947 Kotlin Lint: "Calling new methods on older versions" could suggest specific quick fixes
• KT-12741 Android Extensions: Enable IDE plugin only if it is enabled in the build.gradle file
• KT-13122 Implement '@RequiresApi' intention for android and don't report warning on annotated classes
• KT-16680 Stack overflow in UAST containsLocalTypes()
• KT-15451 Support "Android String Reference" folding in Kotlin files
• KT-16132 Renaming property provided by kotlinx leads to renaming another members
• KT-17200 Unable to build an android project
• KT-13104 Incorrect resource name in Activity after renaming ID attribute value in layout file
• KT-17436 Refactor | Rename android:id corrupts R.id references in kotlin code
• KT-17255 Kotlin 1.1.2 EAP is broken with 2.4.0-alpha3
• KT-17610 "Unknown reference: kotlinx"

IDE

• KT-6159 Inline Method refactoring
• KT-4578 Intention to move property between class body and constructor parameter
• KT-8568 Provide a QuickFix to replace type Array<Int> in annotation with IntArray
• KT-10393 Detect calls to functions returning a lambda from expression body which ignore the return value
• KT-11393 Inspection to highlight and warn on usage of internal members in other module from Java
• KT-12004 IDE inspection that destructuring variable name matches the other name in data class
• KT-12183 Intention converting several calls with same receiver to 'with'/apply/run
• KT-13111 Support bound references in lambda-to-reference intention / inspection
• KT-15966 Create quickfix for DELEGATED_MEMBER_HIDES_SUPERTYPE_OVERRIDE
• KT-16074 Introduce a quick-fix adding noinline modifier for a value parameter of suspend function type
• KT-16131 Add quickfix for: Cannot access member: it is invisible (private in supertype)
• KT-16188 Add create class quickfix
• KT-16258 Add intention to add missing components to destructuring assignment
• KT-16292 Support "Reference to lambda" for bound references
• KT-11234 Debugger won't hit breakpoint in nested lamba
• KT-12002 Improve completion for closure parameters to work in more places
• KT-15768 It would be nice to show in Kotlin facet what compiler plugins are on and their options
• KT-16022 Kotlin facet: provide UI to navigate to project settings
• KT-16214 Do not hide package kotlin.reflect.jvm.internal from auto-import and completion, inside package "kotlin.reflect"
• KT-16647 Don't create kotlinc.xml if the settings don't differ from the defaults
• KT-16649 All Gradle related classes should be moved to optional dependency section of plugin.xml
• KT-16800 Autocomplete for closure with single arguments

Bug fixes

• KT-16316 IDE: don't show Kotlin Scripting section when target platform is JavaScript
• KT-16317 IDE: some fields stay enabled in an facet when use project settings was chosen
• KT-16596 Hang in IntelliJ while scanning zips
• KT-16646 The flag to enable coroutines does not sync from gradle file in Android Studio
• KT-16788 Importing Kotlin Maven projects results in invalid .iml
• KT-16827 kotlin javascript module not recognized by gradle sync when an android module is present
• KT-16848 Regression: completion after dot in string interpolation expression doesn't work if there are no curly braces
• KT-16888 "Multiple values are not allowed for plugin option org.jetbrains.kotlin.android:package" when rebuilding project
• KT-16980 Accessing language version settings for a module performs runtime version detection on every access with no caching
• KT-16991 Navigate to receiver from this in extension function
• KT-16992 Navigate to lambda start from auto-generated 'it' parameter
• KT-12264 AssertionError: Resolver for 'completion/highlighting in LibrarySourceInfo for platform JVM' does not know how to resolve ModuleProductionSourceInfo
• KT-13734 Annotated element search is slow
• KT-14710 Sample references aren't resolved in IDE
• KT-16415 Dependency leakage with Kotlin IntelliJ plugin, using gradle-script-kotlin, and the gradle-intellij-plugin
• KT-16837 Slow typing in Kotlin file because of ImportFixBase
• KT-16926 'implement' dependency is not transitive when importing gradle project to IDEA
• KT-17141 Running test from gutter icon fails in AS 2.4 Preview 3
• KT-17162 Plain-text Java copy-paste to Kotlin file results in exception
• KT-16714 J2K: Write access is allowed from event dispatch thread only
• KT-14058 Unexpected error MISSING_DEPENDENCY_CLASS
• KT-9275 Unhelpful IDE warning "Configure Kotlin"
• KT-15279 'Kotlin not configured message' should not be displayed while gradle sync is in progress
• KT-11828 Configure Kotlin in Project: failure for Gradle modules without build.gradle (IDEA creates them)
• KT-16571 Configure Kotlin in Project does not suggest just published version
• KT-16590 Configure kotlin warning popup after each sync gradle
• KT-16353 Configure Kotlin in Project: configurators are not suggested for Gradle module in non-Gradle project with separate sub-modules for source sets
• KT-16381 Configure Kotlin dialog suggests modules already configured with other platforms
• KT-16401 Configure Kotlin in the project adds incorrect dependency kotlin-stdlib-jre8 to 1.0.x language
• KT-12261 Partial body resolve doesn't resolve anything in object literal used as an expression body of a method
• KT-13013 "Go to Type Declaration" doesn't work for extension receiver and implict lambda parameter
• KT-13135 IDE goes in an infinite indexing loop if a .kotlin_module file is corrupted
• KT-14129 for/iter postfix templates should be applied for string, ranges and mutable collections
• KT-14134 Allow to apply for/iter postfix template to map
• KT-14871 Idea and Maven is not in sync with ModuleKind for Kotlin projects
• KT-14986 Disable postfix completion when typing package statements
• KT-15200 Show implementation should show inherited classes if a typealias to base class/interface is used
• KT-15398 Annotations find usages in annotation instance site
• KT-15536 Highlight usages: Class with primary constructor isn't highlighted when caret is on constructor invocation
• KT-15628 Change error message if both KotlinJavaRuntime and KotlinJavaScript libraries are present in the module dependencies
• KT-15947 Kotlin facet: Target platform on importing from a maven project should be filled the same way for different artifacts
• KT-16023 Kotlin facet: When "Use project settings" is enabled, respective fields should show values from the project settings
• KT-16698 Kotlin facet: modules created from different gradle sourcesets have the same module options
• KT-16700 Kotlin facet: jdkHome path containing spaces splits into several additional args after import
• KT-16776 Kotlin facet, import from maven: free arguments from submodule doesn't override arguments from parent module
• KT-16550 Kotlin facet from Maven: provide error messages if additional command line parameters are set several times
• KT-16313 Kotlin facet: unify filling up information about included AllOpen/NoArg plugins on importing from Maven and Gradle
• KT-16342 Kotlin facet: JavaScript platform is not detected if there are 2 versions of stdlib in dependencies
• KT-16032 Kotlin code formatter merges comment line with non-comment line
• KT-16038 UI blocked on pasting java code into a kotlin file
• KT-16062 Kotlin breakpoint doesn't work in some lambda in Rider project.
• KT-15855 Can't evaluate expression in @JvmStatic method
• KT-16667 Kotlin debugger "smart step into" fail on method defined in the middle of class hierarchy
• KT-16078 Formatter puts empty body braces on different lines when KDoc is present
• KT-16265 Parameter info doesn't work with type alias constructor
• KT-14727 Wrong samples for some postfix templates

Inspections / Quickfixes

• KT-17002 Make "Lambda to Reference" inspection off by default
• KT-14402 Inspection "Use destructuring declaration" for lambdas doesn't work when parameter is of type Pair
• KT-16857 False "Remove redundant 'let'" suggestion
• KT-16928 Surround with null check quickfix works badly in case of qualifier
• KT-15870 Move quick fix of "Package name does not match containing directory" inspection: Throwable "AWT events are not allowed inside write action"
• KT-16128 'Add label to loop' QF proposed when there's already a label
• KT-16828 Don't suggest destructing declarations if not all components are used
• KT-17022 Replace deprecated in the whole project may miss some usages in expression body

Refactorings, Intentions

• KT-7516 Rename refactoring doesn't rename related labels
• KT-7520 Exception when try rename label from usage
• KT-8955 Refactor / Move package: KNPE at KotlinMoveDirectoryWithClassesHelper.postProcessUsages() with not matching package statement
• KT-11863 Refactor / Move: moving referred file level elements to another package keeps reference to old FQN
• KT-13190 Refactor / Move: no warning on moving class containing internal member to different module
• KT-13341 Convert lambda to function reference intention is not available for object member calls
• KT-13755 When (java?) class is moved redundant imports are not removed
• KT-13911 Refactor / Move: "Problems Detected" dialog is not shown on moving whole .kt file
• KT-14401 Can't rename implicit lambda parameter 'it' when caret is placed right after the last character
• KT-14483 "Argument of NotNull parameter must be not null" in KotlinTryCatchSurrounder when using "try" postfix template
• KT-15075 KNPE in "Specify explicit lambda signature"
• KT-15190 Refactor / Move: false Problems Detected on moving class using parent's protected member
• KT-15250 Convert anonymous object to lambda is shown when conversion not possible due implicit calls on this
• KT-15339 Extract Superclass is enabled for any element: CommonRefactoringUtil$RefactoringErrorHintException: "Superclass cannot be extracted from interface" at ExtractSuperRefactoring.performRefactoring()
• KT-15559 Kotlin: Moving classes to different packages breaks references to companion object's properties
• KT-15556 Convert lambda to reference isn't proposed for parameterless constructor
• KT-15586 ISE during "Move to a separate file"
• KT-15822 Move class refactoring leaves unused imports
• KT-16108 Cannot rename class on the companion object reference
• KT-16198 Extract method refactoring should order parameters by first usage
• KT-17006 Refactor / Move: usage of library function is reported as problem on move between modules with different library versions
• KT-17032 Refactor / Move updates references to not moved class from the same file
• KT-11907 Move to package renames file to temp.kt
• KT-16468 Destructure declaration intention should be applicable for Pair
• KT-16162 IAE for destructuring declaration entry from KotlinFinalClassOrFunSpringInspection
• KT-16556 Move refactoring shows Refactoring cannot be performed warning.
• KT-16605 NPE caused by Rename Refactoring of backing field when caret is after the last character
• KT-16809 Move refactoring fails badly
• KT-16903 "Convert to primary constructor" doesn't update supertype constructor call in supertypes list in case of implicit superclass constructor call

JS

• KT-6627 JS: test sources doesn't compile from IDE
• KT-13610 JS: boxed Double.NaN is not equal to itself
• KT-16012 JS: prohibit nested declarations, except interfaces inside external interface
• KT-16043 IDL: mark inline helper function as InlineOnly
• KT-16058 JS: getValue/setValue don't work if they are declared as suspend
• KT-16164 JS: Bad getCallableRef in suspend function
• KT-16350 KotlinJS - wrong code generated when temporary variables generated for RHS of && operation
• KT-16377 JS: losing declarations of temporary variables in secondary constructors
• KT-16545 JS: ::class crashes at runtime for primitive types (e.g. Int::class, or Double::class)
• KT-16144 JS: inliner can't find function called through inheritor ("fake" override) from another module

Reflection

• KT-9453 ClassCastException: java.lang.Class cannot be cast to kotlin.reflect.KClass
• KT-11254 Make callable references Serializable on JVM
• KT-11316 NPE in hashCode of KProperty object created for delegated property
• KT-12630 KotlinReflectionInternalError on referencing some functions from stdlib
• KT-14731 When starting application from test source root, kotlin function reflection fails in objects defined in sources

Libraries

• KT-16922 buildSequence/Iterator: Infinite sequence terminates prematurely
• KT-16923 Progression iterator doesn't throw after completion
• KT-16994 Classify sequence operations as stateful/stateless and intermediate/terminal
• KT-9786 String.trimIndent doc is misleading
• KT-16572 Add links to Mozilla Developer Network to kdocs of classes that we generate from IDL
• KT-16252 IDL2K: Add ItemArrayLike interface implementation to collection-like classes

1.1.1

IDE

• KT-16714 J2K: Write access is allowed from event dispatch thread only

Compiler

• KT-16801 Accessors of @PublishedApi property gets mangled
• KT-16673 Potentially problematic code causes exception when work with SAM adapters

Libraries

• KT-16557 Correct SinceKotlin(1.1) for all declarations in kotlin.reflect.full

1.1.1-RC

IDE

• KT-16481 Kotlin debugger & bytecode fail on select statement blocks (IllegalStateException: More than one package fragment)

Gradle support

• KT-15783 Gradle builds don't use incremental compilation due to an error: "Could not connect to kotlin daemon"
• KT-16434 Gradle plugin does not compile androidTest sources when Jack is enabled
• KT-16546 Enable incremental compilation in gradle by default

Compiler

• KT-16184 AbstractMethodError in Kapt3ComponentRegistrar while compiling from IntelliJ using Kotlin 1.1.0
• KT-16578 Fix substitutor for synthetic SAM adapters
• KT-16581 VerifyError when calling default value parameter with jvm-target 1.8
• KT-16583 Cannot access private file-level variables inside a class init within the same file if a secondary constructor is present
• KT-16587 AbstractMethodError: Delegates not generated correctly for private interfaces
• KT-16598 Incorrect error: The feature "bound callable references" is only available since language version 1.1
• KT-16621 Kotlin compiler doesn't report an error if a class implements Annotation interface but doesn't implement annotationType method
• KT-16441 NoSuchFieldError: $$delegatedProperties when delegating through provideDelegate in companion object

JavaScript support

• Prohibit function types with receiver as parameter types of external declarations
• Remove extension receiver for function parameters in jQuery declarations

1.1

Compiler exceptions

• KT-16411 Exception from compiler when try to inline callable reference to class constructor inside object
• KT-16412 Exception from compiler when try call SAM constructor where argument is callable reference to nested class inside object
• KT-16413 When we create sam adapter for java.util.function.Function we add incorrect null-check for argument

Standard library

• KT-6561 Drop java.util.Collections package from js stdlib
• javaClass extension property is no more deprecated due to migration problems

IDE

• KT-16329 Inspection "Calls to staic methods in Java interfaces..." always reports warning undependent of jvm-target

1.1-RC

Reflection

• KT-16358 Incompatibility between kotlin-reflect 1.0 and kotlin-stdlib 1.1 fixed

Compiler

Coroutine support

• KT-15938 Changed error message for calling suspend function outside of suspendable context
• KT-16092 Backend crash fixed: "Don't know how to generate outer expression" for destructuring suspend lambda
• KT-16093 Annotations are retained during reading the binary representation of suspend functions
• KT-16122 java.lang.VerifyError fixed in couroutines: (String, null, suspend () -> String)
• KT-16124 Marked as UNSUPPORTED: suspension points in default parameters
• KT-16219 Marked as UNSUPPORTED: suspend get/set, in/!in operators for
• KT-16145 Beta-2 coroutine regression fixed (wrong code generation)

Kapt3

• KT-15524 Fix javac error reporting in Kotlin daemon
• KT-15721 JetBrains nullability annotations are now returned from Element.getAnnotationMirrors()
• KT-16146 Fixed work in verbose mode
• KT-16153 Ignore declarations with illegal Java identifiers
• KT-16167 Fixed compilation error with kapt arguments in build.gradle
• KT-16170 Stub generator now adds imports for corrected error types to stubs
• KT-16176 javac's finalCompiler log is now used to determine annotation processing errors

Backward compatibility

• KT-16017 More graceful error message for disabled features
• KT-16073 Improved backward compatibility mode with version 1.0 on JDK dependent built-ins
• KT-16094 Compiler considers API availability when compiling language features requiring runtime support
• KT-16171 Fixed regression "Unexpected container error on Kotlin 1.0 project"
• KT-16199 Do not import "kotlin.comparisons.*" by default in language version 1.0 mode

Various issues

• KT-16225 enumValues non-reified stub implementation references nonexistent method no more
• KT-16291 Smart cast works now when getting class of instance
• KT-16380 Show warning when running the compiler under Java 6 or 7

JavaScript backend

• KT-16144 Fixed inlining of functions called through inheritor ("fake" override) from another module
• KT-16158 Error is not reported now when library path contains JAR file without JS metadata, report warning instead
• KT-16160 Companion object dispatch receiver translation fixed

Standard library

• KT-7858 Add extension function takeUnless
• javaClass extension property is deprecated, use instance::class.java instead
• Massive deprecations are coming in JS standard library in kotlin.dom and kotlin.dom.build packages

IDE

Configuration issues

• KT-15899 Kotlin facet: language and api version for submodule setup for 1.0 are filled now as 1.0 too
• KT-15914 Kotlin facet works now with multi-selected modules in Project Settings too
• KT-15954 Does not suggest to configure kotlin for the module after each new kt-file creation
• KT-16157 freeCompilerArgs are now imported from Gradle into IDEA
• KT-16206 Idea no more refuses to compile a kotlin project defined as a maven project
• KT-16312 Kotlin facet: import from gradle: don't import options which are set implicitly already
• KT-16325 Kotlin facet: correct configuration after upgrading the IDE plugin
• KT-16345 Kotlin facet: detect JavaScript if the module has language 1.0 kotlin-js-library dependency

Coroutine support

• KT-16109 Error fixed: The -Xcoroutines can only have one value
• KT-16251 Fix detection of suspend calls containing extracted parameters

Intention actions, inspections and quick-fixes

2017.1 compatibility

• KT-15870 "Package name does not match containing directory" inspection: fixed throwable "AWT events are not allowed inside write action"
• KT-15924 Create Test action: fixed throwable "AWT events are not allowed inside write action"

Bug fixes

• KT-14831 Import statement and FQN are not added on converting lambda to reference for typealias
• KT-15545 Inspection "join with assignment" does not change now execution order for properties
• KT-15744 Fix: intention to import sleep wrongly suggests Thread.sleep
• KT-16000 Inspection "join with assignment" handles initialization with 'this' correctly
• KT-16009 Auto-import for JDK classes in .kts files
• KT-16104 Don't insert modifiers (e.g. suspend) before visibility

Completion

• KT-16076 Completion does not insert more FQN kotlin.text.String
• KT-16088 Completion does not insert more FQN for kotlin package
• KT-16110 Keyword 'suspend' completion inside generic arguments
• KT-16243 Performance enhanced after variable of type ArrayList

Various issues

• KT-15291 'Find usages' now does not report property access as usage of getter method in Java class with parameter
• KT-15647 Exception fixed: KDoc link to member of class from different package and module
• KT-16071 IDEA deadlock fixed: when typing "parse()" in .kt file
• KT-16149 Intellij Idea 2017.1/Android Studio 2.3 beta3 and Kotlin plugin 1.1-beta2 deadlock fixed

Coroutine libraries

• KT-15716 Introduced startCoroutineUninterceptedOrReturn coroutine intrinsic
• KT-15718 createCoroutine now returns safe continuation
• KT-16155 Introduced createCoroutineUnchecked intrinsic

Gradle support

• KT-15829 Gradle Kotlin JS plugin: removed false "Duplicate source root:" warning for kotlin files
• KT-15902 JS: gradle task output is now considered as source set output
• KT-16174 Error fixed during IDEA-Gradle synchronization for Kotlin JS
• KT-16267 JS: fixed regression in 1.1-beta2 for multi-module gradle project
• KT-16274 Kotlin JS Gradle unexpected compiler error / absolute path to output file
• KT-16322 Circlet project Gradle import issue fixed

REPL

• KT-15861 Use windows line separator in kotlin's JSR implementation
• KT-16126 Proper jvmTarget for REPL compilation

1.1-Beta2

Language related changes

• KT-7897 Do not require to call enum constructor for each entry if all parameters have default values
• KT-8985 Support T::class.java for T with no non-null upper bound
• KT-10711 Type inference works now on generics for callable references
• KT-13130 Support exhaustive when for sealed trees
• KT-15898 Cannot use type alias to qualify enum entry
• KT-16061 Smart type inference on callable references in 1.1 mode only

Reflection

• KT-8384 Access to the delegate object for a KProperty

Compiler

Coroutine support

• KT-15016 VerifyError with coroutine: fix processing of uninitialized instances
• KT-15527 Coroutine compile error: wrong code generated for safe qualified suspension points
• KT-15552 Accessor implementation of suspended function produces AbstractMethodError
• KT-15715 Coroutine generate invalid invoke
• KT-15820 Coroutine Internal Error regression with dispatcher + this@
• KT-15821 Coroutine internal error regression: Could not inline method call apply
• KT-15824 Coroutine iterator regression: Object cannot be cast to java.lang.Boolean
• KT-15827 Show Kotlin Bytecode shows wrong bytecode for suspending functions
• KT-15907 Bogus error about platform declaration clash with private suspend functions
• KT-15933 Suspend getValue/setValue/provideDelegate do not work properly
• KT-15935 Private suspend function in file causes UnsupportedOperationException: Context does not have a "this"
• KT-15963 Coroutine: runtime error if returned object "equals" does not like comparison to SUSPENDED_MARKER
• KT-16068 Prohibit inline lambda parameters of suspend function type

Diagnostics

• KT-1560 Report diagnostic for a declaration of extension function which will be always shadowed by member function
• KT-12846 Forbid vararg of Nothing
• KT-13227 NO_ELSE_IN_WHEN in when by sealed class instance if is-check for base sealed class is used
• KT-13355 Type mismatch on inheritance is not reported on abstract class
• KT-15010 Missing error on an usage of non-constant property in annotation default argument
• KT-15201 Compiler is complaining about when statement without null condition even if null is checked before.
• KT-15736 Report an error on type alias expanded to a nullable type on LHS of a class literal
• KT-15740 Report error on expression of a nullable type on LHS of a class literal
• KT-15844 Do not allow to access primary constructor parameters from property with custom getter
• KT-15878 Extension shadowed by member should not be reported for infix/operator extensions when member is non-infix/operator
• KT-16010 Do not highlight lambda parameters as unused in 1.0 compatibility mode

Kapt

• KT-15675 Kapt3 does not generate classes annotated with AutoValue
• KT-15697 If an annotation with AnnotationTarget.PROPERTY is tagged on a Kotlin property, it breaks annotation processing
• KT-15803 Kotlin 1.0.6 broke Dagger
• KT-15814 Regression: Kapt is not working in 1.0.6 / 1.1-M04 / 1.1-Beta
• KT-15838 kapt3 1.1-beta: KaptError: Java file parsing error
• KT-15841 1.1-Beta + kapt3 fails to build the project with StackOverflowError
• KT-15915 Kapt: Kotlin class target directory is cleared before compilation (and after kapt task)
• KT-16006 Cannot determine if type is an error type during annotation processing

Exceptions / Errors

• KT-8264 Internal compiler error: java.lang.ArithmeticException: BigInteger: modulus not positive
• KT-14547 NoSuchElementException when compiling callable reference without stdlib in the classpath
• KT-14966 Regression: VerifyError on access super implementation from delegate
• KT-15017 Throwing exception in the end of inline suspend-functions lead to internal compiler error
• KT-15439 Resolved call is not completed for generic callable reference in if-expression
• KT-15500 Exception passing freeCompilerArgs to gradle plugin
• KT-15646 InconsistentDebugInfoException when stepping over throw
• KT-15726 Kotlin compiles invalid bytecode for nested try-catch with return
• KT-15743 Overloaded Kotlin extensions annotates wrong parameters in java
• KT-15868 NPE when comparing nullable doubles for equality
• KT-15995 Can't build project with DataBinding using Kotlin 1.1: incompatible language version
• KT-16047 Internal Error: org.jetbrains.kotlin.util.KotlinFrontEndException while analyzing expression

Type inference issues

• KT-10268 Wrong type inference related to captured types
• KT-11259 Wrong type inference for Java 8 Stream.collect.
• KT-12802 Type inference failed when irrelevant method reference is used
• KT-12964 Support type inference for callable references from parameter types of an expected function type

Smart cast issues

• KT-13468 Smart cast is broken after assignment of 'if' expression
• KT-14350 Make smart-cast work as it does in 1.0 when -language-version 1.0 is used
• KT-14597 When over smartcast enum is broken and breaks all other "when"
• KT-15792 Wrong smart cast after y = x, x = null, y != null sequence

Various issues

• KT-15236 False positive: Null can not be a value of a non-null type
• KT-15677 Modifiers and annotations are lost on a (nullable) parenthesized type
• KT-15707 IDEA unable to parallel compile different projects
• KT-15734 Nullability is lost during expansion of a type alias
• KT-15748 Type alias constructor return type should have a corresponding abbreviation
• KT-15775 Annotations are lost on value parameter types of a function type
• KT-15780 Treat Map.getOrDefault overrides in Java the same way as in 1.0.x compiler with language version 1.0
• KT-15794 Refine backward compatibility mode for additional built-ins members from JDK
• KT-15848 Implement additional annotation processing in the KotlinScriptDefinitionFromAnnotatedTemplate for SamWithReceiver plugin
• KT-15875 Operation has lead to overflow for 'mod' with negative first operand
• KT-15945 Feature Request: Andrey Breslav to grow a beard.

JavaScript backend

Coroutine support

• KT-15834 JS: Local delegate in suspend function
• KT-15892 JS: safe call of suspend functions causes compiler to crash

Diagnostics

• KT-14668 Do not allow declarations in 'kotlin' package or subpackages in JS
• KT-15184 JS: prohibit .. operation with dynamic on left-hand side
• KT-15253 JS: no error when use class external class with JsModule in type context when compiling with plain module kind
• KT-15283 JS: additional restrictions on dynamic
• KT-15961 Could not implement external open class with function with optional parameter

Language feature support

• KT-14035 JS: support implementing CharSequence
• KT-14036 JS: use Int16 for Char when it possible and box to our Char otherwise
• KT-14097 Wrong code generated for enum entry initialization using non-primary no-argument constructor
• KT-15312 JS: map kotlin.Throwable to JS Error
• KT-15765 JS: support callable references on built-in and intrinsic functions and properties
• KT-15900 JS: Support enum entry with empty initializer with vararg constructor

Standard library support

• KT-4141 JS: wrong return type for Date::getTime
• KT-4497 JS: add String.toInt, String.toDouble etc extension functions, parseInt and parseFloat are deprecated in favor of these new ones
• KT-15940 JS: rename all js standard library artifacts (both in maven and in compiler distribution) to kotlin-stdlib-js.jar
• Add Promise<T> external declaration to the standard library
• Types like Date, Math, Console, Promise, RegExp, Json require explicit import from kotlin.js package

External declarations

• KT-15144 JS: rename noImpl to definedExternally
• KT-15306 JS: allow to use definedExternally only inside a body of external declarations
• KT-15336 JS: allow to inherit external classes from kotlin.Throwable
• KT-15905 JS: add a way to control qualifier for external declarations inside file
• Deprecate @native annotation, to be removed in 1.1 release.

Exceptions / Errors

• KT-10894 Infinite indexing at projects with JS modules
• KT-14124 AssertionError: strings file not found on K2JS serialized data

Various issues

• KT-8211 JS: generate dummy init for properties w/o initializer to avoid to have different hidden classes for different instances
• KT-12712 JS: Json should not be a class
• KT-13312 JS: can't use extension lambda where expected lambda and vice versa
• KT-13632 Add template kotlin js project under gradle in "New Project" window
• KT-15278 JS: don't treat property access through dynamic as side effect free
• KT-15285 JS: take into account as many characteristics from the signature as possible when mangling
• KT-15678 JS: Generated local variable named 'element' clashes with actual local variable named 'element'
• KT-15755 JS compiler produces a lot of empty kotlin_file_table files for irrelevant packages
• KT-15770 Name clash between recursive local functions with same name
• KT-15797 JS: wrong code for accessing nested class inside js module
• KT-15863 JS: Extension function reference shifts parameters loosing the receiver
• KT-16049 JS: drop "-kjsm" command line option, merge the logic into "-meta-info"
• KT-16083 JS: rename "-library-files" argument to "-libraries" and change separator from comma to system file separator

Standard Library

• KT-13353 Add Map.minus(key) and Map.minus(keys)
• KT-13826 Add parameter names in function types used in the standard library
• KT-14279 Make String.matches(Regex) and Regex.matches(String) infix
• KT-15399 Iterable.average() now returns NaN for an empty collection
• KT-15975 Move coroutine-related runtime parts to kotlin.coroutines.experimental package
• KT-16030 Move bitwise operations on Byte and Short to kotlin.experimental package
• KT-16026 Classes compiled in 1.1 in 1.0-compatibility mode may contain references to CloseableKt class from 1.1

IDE

Configuration issues

• KT-15621 Copy compiler options values from project settings on creating a kotlin facet for Kotlin (JVM) project
• KT-15623 Copy compiler options values from project settings on creating a kotlin facet for Kotlin (JavaScript) project
• KT-15624 Set option "Use project settings" in newly created Kotlin facet
• KT-15712 Configuring a project with Maven or Gradle should automatically use stdlib-jre7 or stdlib-jre8 instead of standard stdlib
• KT-15772 Facet does not pick up api version from maven
• KT-15819 It would be nice if compileKotlin options are imported into Kotlin facet from gradle/maven
• KT-16015 Prohibit api-version > language-version in Facet and Project Settings

Coroutine support

• KT-14704 Extract Method should work in coroutines
• KT-15955 Quick-fix to enable coroutines through Gradle project configuration
• KT-16018 Hide coroutines intrinsics from import and completion
• KT-16075 Error:Kotlin: The -Xcoroutines can only have one value

Backward compatibility issues

• KT-15134 Do not suggest using destructuring lambda if this will result in "available since 1.1" error
• KT-15918 Quick fix "Set module language level to 1.1" should also set API version to 1.1
• KT-15969 Replace operator with function should use either rem or mod for % depending on language version
• KT-15978 Type alias from Kotlin 1.1 are suggested in completion even if language level is set to 1.0 in settings
• KT-15979 Usages of type aliases are not shown as errors in editor if language version is set to 1.0
• KT-16019 Do not suggest renaming to underscore in 1.0 compatibility mode
• KT-16036 "Create type alias from usage" quick-fix should not be suggested at language level 1.0

Intention actions, inspections and quick-fixes

New features

• KT-9912 Merge ifs intention
• KT-13427 "Specify type explicitly" should support type aliases
• KT-15066 "Make private/.." intention on type aliases
• KT-15709 Add inspection for private primary constructors in data classes as they are accessible via the copy method
• KT-15738 Intention to add suspend modifier to functional type
• KT-15800 Quick-fix to convert a function to suspending on error when calling suspension inside

Bug fixes

• KT-13710 Import intention action should not appear in import list
• KT-14680 import statement to type alias reported as unused when using only TA constructor
• KT-14856 TextView internationalisation intention does not report the problem
• KT-14993 Keep destructuring declaration parameter on inspection "Remove explicit lambda parameter types"
• KT-14994 PsiInvalidElementAccessException and incorrect generation on inspection "Specify type explicitly" on destructuring parameter
• KT-15162 "Remove explicit lambda parameter types" intentions fails with destructuring declaration with KNPE at KtPsiFactory.createLambdaParameterList()
• KT-15311 "Add Import" intention generates incorrect code
• KT-15406 Convert to secondary constructor for enum class should put new members after enum values
• KT-15553 Copy concatenation text to clipboard with Kotlin and string interpolation does not work
• KT-15670 'Convert to lambda' quick fix in IDEA leaves single-line comment and } gets commented out
• KT-15873 Alt+Enter menu isn't shown for deprecated mod function
• KT-15874 Replace operator with function call replaces % with deprecated mod
• KT-15884 False positive "Redundant .let call"
• KT-16072 Intentions to convert suspend lambdas to callable references should not be shown

Android support

• KT-13275 Kotlin Gradle plugin for Android does not work when jackOptions enabled
• KT-15150 Android: Add quick-fix to generate View constructor convention
• KT-15282 Issues debugging crossinline Android code

KDoc

• KT-14710 Sample references are not resolved in IDE
• KT-15796 Import of class referenced only in KDoc not preserved after copy-paste

Various issues

• KT-9011 Shift+Enter should insert curly braces when invoked after class declaration
• KT-11308 Hide kotlin.jvm.internal package contents from completion and auto-import
• KT-14252 Completion could suggest constructors available via type aliases
• KT-14722 Completion list isn't filled up for type alias to object
• KT-14767 Type alias to annotation class should appear in the completion list
• KT-14859 "Parameter Info" sometimes does not work properly inside lambda
• KT-15032 Injected fragment: descriptor was not found for declaration: FUN
• KT-15153 Support typeAlias extensions in completion and add import
• KT-15786 NoSuchMethodError: com.intellij.util.containers.UtilKt.isNullOrEmpty
• KT-15883 Generating equals() and hashCode(): hashCode does not correctly honor variable names with back ticks
• KT-15911 Kotlin REPL will not launch: "Neither main class nor JAR path is specified"

J2K

• KT-15789 Kotlin plugin incorrectly converts for-loops from Java to Kotlin

Gradle support

• KT-14830 Kotlin Gradle plugin configuration should not add 'kotlin' source directory by default
• KT-15279 'Kotlin not configured message' should not be displayed while gradle sync is in progress
• KT-15812 Create Kotlin facet on importing gradle project with unchecked option Create separate module per source set
• KT-15837 Gradle compiler attempts to connect to daemon on address derived from DNS lookup
• KT-15909 Copy Gradle compiler options to facets in Intellij/AS
• KT-15929 Gradle project imported with wrong 'target platform'

Other issues

• KT-15450 JSR 223 - support eval with bindings

1.1.0-Beta

Reflection

• KT-15540 findAnnotation returns T?, but it throws NoSuchElementException when there is no matching annotation
• Reflection API in kotlin-reflect library is moved to kotlin.reflect.full package, declarations in the package kotlin.reflect are left deprecated. Please migrate according to the hints provided.

Compiler

Coroutine support

• KT-15379 Allow invoke on instances of suspend function type inside suspend function
• KT-15380 Support suspend function type with value parameters
• KT-15391 Prohibit suspend function type in supertype list
• KT-15392 Prohibit local suspending function
• KT-15413 Override regular functions with suspending ones and vice versa
• KT-15657 Refine dispatchResume convention
• KT-15662 Prohibit callable references to suspend functions

Diagnostics

• KT-9630 Cannot create extension function on intersection of types
• KT-11398 Possible false positive for INACCESSIBLE_TYPE
• KT-13593 Do not report USELESS_ELVIS_RIGHT_IS_NULL for left argument with platform type
• KT-13859 Wrong error about using unrepeatable annotation when mix implicit and explicit targets
• KT-14179 Prohibit to use enum entry as type parameter
• KT-15097 Inherited platform declarations clash: regression under 1.1 when indirectly inheriting from java.util.Map
• KT-15287 Kotlin runtime 1.1 and runtime 1.0.x: Overload resolution ambiguity
• KT-15334 Incorrect "val cannot be reassigned" inside do-while
• KT-15410 "Protected function call from public-API inline function" for protected constructor call

Kapt3

• KT-15145 Kapt3: Doesn't compile with multiple errors
• KT-15232 Kapt3 crash due to java codepage
• KT-15359 Kapt3 exception while annotation processing (DataBindings AS2.3-beta1)
• KT-15375 Kapt3 can't find ${env.JDK_18}/lib/tools.jar
• KT-15381 Unresolved references: R with Kapt3
• KT-15397 Kapt3 doesn't work with databinding
• KT-15409 Kapt3 Cannot find the getter for attribute 'android:text' with value type java.lang.String on android.widget.EditText.
• KT-15421 Kapt3: Substitute types from Psi instead of writing NonExistentClass for generated type names
• KT-15459 Kapt3 doesn't generate code in test module
• KT-15524 Kapt3 - Error messages should display associated element information (if available)
• KT-15713 Kapt3: circular dependencies between Gradke tasks

Exceptions / Errors

• KT-11401 Error type encountered for implicit invoke with function literal argument
• KT-12044 Assertion "Rewrite at slice LEXICAL_SCOPE" for 'if' with property references
• KT-14011 Compiler crash when inlining: lateinit property allRecapturedParameters has not been initialized
• KT-14868 CCE in runtime while converting Number to Char
• KT-15364 VerifyError: Bad type on operand stack on ObserverIterator.hasNext
• KT-15373 Internal error when running TestNG test
• KT-15437 VerifyError: Bad local variable type on simplest provideDelegate
• KT-15446 Property reference on an instance of subclass causes java.lang.VerifyError
• KT-15447 Compiler backend error: "Don't know how to generate outer expression for class"
• KT-15449 Back-end (JVM) Internal error: Couldn't inline method call
• KT-15464 Regression: "Supertypes of the following classes cannot be resolved. Please make sure you have the required dependencies in the classpath:"
• KT-15575 VerifyError: Bad type on operand stack

Various issues

• KT-11962 Super call with default parameters check is generated for top-level function
• KT-11969 ProGuard issue with private interface methods
• KT-12795 Write information about sealed class inheritors to metadata
• KT-13718 ClassFormatError on aspectj instrumentation
• KT-14162 Support @InlineOnly on inline properties
• KT-14705 Inconsistent smart casts on when enum subject
• KT-14917 No way to pass additional java command line options to kontlinc on Windows
• KT-15112 Compiler hangs on nested lock compilation
• KT-15225 Scripts: generate classes with names that are valid Java identifiers
• KT-15411 Unnecessary CHECKCAST bytecode when dealing with null
• KT-15473 Invalid KFunction byte code signature for callable references
• KT-15582 Generated bytecode is sometimes incompatible with Java 9
• KT-15584 Do not mark class files compiled with a release language version as pre-release
• KT-15589 Upper bound for T in KClass can be implicitly violated using generic function
• KT-15631 Compiler hang in MethodAnalyzer.analyze() fixed

JavaScript backend

Coroutine support

• KT-15362 JS: Regex doesn't work (properly) in coroutine
• KT-15366 JS: error when calling inline function with optional parameters from another module inside coroutine lambda
• KT-15367 JS: for against iterator with suspend next and hasNext functions does not work
• KT-15400 suspendCoroutine is missing in JS BE
• KT-15597 Support non-tail suspend calls inside named suspend functions
• KT-15625 JS: return statement without value surrounded by try..finally in suspend lambda causes compiler error
• KT-15698 Move coroutine intrinsics to kotlin.coroutine.intrinsics package

Diagnostics

• KT-14577 JS: do not report declaration clash when common redeclaration diagnostic applies
• KT-15136 JS: prohibit inheritance from kotlin Function{N} interfaces

Language features support

• KT-12194 Exhaustiveness check isn't generated for when expressions in JS at all
• KT-15590 Support increment on inlined properties

Native / external

• KT-8081 JS: native inherited class shouldn't require super or primary constructor call
• KT-13892 JS: restrictions for native (external) functions and properties
• KT-15307 JS: prohibit inline members inside external declarations
• KT-15308 JS: prohibit non-abstract members inside external interfaces except nullable properties (with accessors)

Exceptions / Errors

• KT-7302 KotlinJS - Trait with optional parameter causes compilation error
• KT-15325 JS: ReferenceError: $receiver is not defined
• KT-15357 JS: when expression in primary-from-secondary constructor call
• KT-15435 Call to 'synchronize' crashes JS backend
• KT-15513 JS: empty do..while loop crashes compiler

Various issues

• KT-4160 JS: compiler produces wrong code for escaped variable names with characters which Illegal in JS (e.g. spaces)
• KT-7004 JS: functions named call not inlined
• KT-7588 JS: operators are not inlined
• KT-7733 JS: Provide overflow behavior for integer arithmetic operations
• KT-8413 JS: generated wrong code for some float constants
• KT-12598 JS: comparisons for Enums always translates using strong operator
• KT-13523 Augmented assignment with array access in LHS is translated incorrectly
• KT-13888 JS: change how functions optional parameters get translated
• KT-15260 JS: don't import module more than once
• KT-15475 JS compiler deletes internal function name in js("") text block
• KT-15506 JS: invalid evaluation order when passing arguments to function by name
• KT-15512 JS: wrong result when use break/throw/return in || and && operators
• KT-15569 js: Wrong code generated when calling an overloaded operator function on an inherited property

Standard Library

• KEEP-23 Operation to group by key and fold each group simultaneously
• KT-15774 buildSequence and buildIterator functions with yield and yieldAll based on coroutines
• KT-6903 Add also extension, which is like apply, but with it instead of this inside lambda.
• KT-7858 Add extension function takeIf to match a value against predicate and return null when it does not match
• KT-11851 Provide extension Map.getValue(key: K): V which throws or returns default when key is not found
• KT-7417 Add min, max on two numbers to standard library
• KT-13898 Allow to implement toArray in collections as protected and provide protected toArray in AbstractCollection.
• KT-14935 Array-like list instantiation functions: List(count) { init } and MutableList(count) { init }
• KT-15630 Overloads of mutableListOf, mutableSetOf, mutableMapOf without parameters
• KT-15557 Iterable.joinTo loses information about each element by calling toString on them by default
• KT-15477 Introduce Throwable.addSuppressed extension
• KT-15310 Add dynamic.unsafeCast
• KT-15436 JS stdlib: org.w3c.fetch.RequestInit has 12 parameters, all required
• KT-15458 Add print and println to common stdlib

IDE

• Project View: Fix presentation of Kotlin files and their members when @JvmName having the same name as the file itself

no-arg / all-open

• KT-15419 IDE build doesn't pick settings of all-open plugin
• KT-15686 IDE build doesn't pick settings of no-arg plugin
• KT-15735 Facet loses compiler plugin settings on reopening project, when "Use project settings" = Yes

Formatter

• KT-15542 Formatter doesn't handle spaces around 'by' keyword
• KT-15544 Formatter doesn't remove spaces around function reference operator

Intention actions, inspections and quick-fixes

New features

• Implement quickfix which enables/disables coroutine support in module or project
• KT-5045 Intention to convert between two comparisons and range check and vice versa
• KT-5629 Quick-fix to import extension method when arguments of non-extension method do not match
• KT-6217 Add warning for unused equals expression
• KT-6824 Quick-fix for applying spread operator where vararg is expected
• KT-8855 Implement "Create label" quick-fix
• KT-15056 Implement intention which converts object literal to class
• KT-15068 Implement intention which rename file according to the top-level class name
• KT-15564 Add quick-fix for changing primitive cast to primitive conversion method

Bug fixes

• KT-14630 Clearer diagnostic message for platform type inspection
• KT-14745 KNPE in convert primary constructor to secondary
• KT-14889 Replace 'if' with elvis operator produces red code if result is referenced in 'if'
• KT-14907 Quick-fix for missing operator adds infix modifier to created function
• KT-15092 Suppress inspection "use property access syntax" for some getters and fix completion for them
• KT-15227 "Replace if with elvis" silently changes semantics
• KT-15412 "Join declaration and assignment" can break code with smart casts
• KT-15501 Intention "Add names to call arguments" shouldn't appear when the only argument is a trailing lambda

Refactorings (Extract / Pull)

• KT-15611 Extract Interface/Superclass: Disable const-properties
• Pull Up: Fix pull-up from object to superclass
• KT-15602 Extract Interface/Superclass: Disable "Make abstract" for inline/external/lateinit members
• Extract Interface: Disable inline/external/lateinit members
• KT-12704, KT-15583 Override/Implement Members: Support all nullability annotations respected by the Kotlin compiler
• KT-15563 Override Members: Allow overriding virtual synthetic members (e.g. equals(), hashCode(), toString(), etc.) in data classes
• KT-15355 Extract Interface: Disable "Make abstract" and assume it to be true for abstract members of an interface
• KT-15353 Extract Superclass/Interface: Allow extracting class with special name (and quotes)
• KT-15643 Extract Interface/Pull Up: Disable "Make abstract" and assume it to be true for primary constructor parameter when moving to an interface
• KT-15607 Extract Interface/Pull Up: Disable internal/protected members when moving to an interface
• KT-15640 Extract Interface/Pull Up: Drop 'final' modifier when moving to an interface
• KT-15639 Extract Superclass/Interface/Pull Up: Add spaces between 'abstract' modifier and annotations
• KT-15606 Extract Interface/Pull Up: Warn about private members with usages in the original class
• KT-15635 Extract Superclass/Interface: Fix bogus visibility warning inside a member when it's being moved as abstract
• KT-15598 Extract Interface: Red-highlight members inherited from a super-interface when that interface reference itself is not extracted
• KT-15674 Extract Superclass: Drop inapplicable modifiers when converting property-parameter to ordinary parameter

Multi-platform project support

• KT-14908 Actions (quick-fixes) to create implementations of header elements
• KT-15305 Do not report UNUSED for header declarations with implementations and vice versa
• KT-15601 Cannot suppress HEADER_WITHOUT_IMPLEMENTATION
• KT-15641 Quick-fix "Create header interface implementation" does nothing

Android support

• KT-12884 Android Extensions: Refactor / Rename of activity name does not change import extension statement
• KT-14308 Android Studio randomly hangs due to Java static member import quick-fix lags
• KT-14358 Kotlin extensions: rename layout file: Throwable: "PSI and index do not match" through KotlinFullClassNameIndex.get()
• KT-15483 Kotlin lint throws unexpected exceptions in IDE

Various issues

• KT-12872 Don't show "defined in " in quick doc for local variables
• KT-13001 "Go to Type Declaration" is broken for stdlib types
• KT-13067 Syntax colouring doesn't work for KDoc tags
• KT-14815 alt + enter -> "import" over a constructor reference is not working
• KT-14819 Quick documentation for special Enum functions doesn't work
• KT-15141 Bogus import popup for when function call cannot be resolved fully
• KT-15154 IllegalStateException on attempt to convert import statement to * if last added import is to typealias
• KT-15329 Regex not inspected properly for javaJavaIdentifierStart and javaJavaIdentifierPart
• KT-15383 Kotlin Scripts can only resolve stdlib functions/classes if they are in a source directory
• KT-15440 Improve extensions detection in IDEA
• KT-15548 Kotlin plugin: @Language injections specified in another module are ignored
• Invoke StorageComponentContainerContributor extension for module dependencies container as well (needed for "sam-with-receiver" plugin to work with scripts)

J2K

• KT-6790 J2K: Static import of Map.Entry is lost during conversion
• KT-14736 J2K: Incorrect conversion of back ticks in javadoc {@code} tag
• KT-15027 J2K: Annotations are set on functions, but not on property accessors

Gradle support

• KT-15376 Kotlin incremental=true: fixed compatibility with AS 2.3
• KT-15433 Kotlin daemon swallows exceptions: fixed stack trace reporting
• KT-15682 Uncheck "Use project settings" option on import Kotlin project from gradle

1.1-M04 (EAP-4)

Language related changes

• KT-4481 compareTo on primitive floats/doubles should behave naturally
• KT-11016 Allow to annotate internal API to be used inside public inline functions
• KT-11128 Member vs SAM conversion with more specific signature
• KT-12215 Allowing to access protected members in public inline members creates potential binary compatibility problem
• KT-12531 Report error when delegated member hides a supertype member
• KT-14650 mod function on integral types is inconsistent with BigInteger.mod
• KT-14651 Floating point comparisons shall operate according to IEEE754
• KT-14852 It should not be possible to use typealias that abbreviates a generic projection as a constructor
• KT-15226 Restrict delegation to java 8 default methods

Reflection

• KT-12250 Provide API for getting a single annotation by its class
• KT-14939 VerifyError in accessors for bound property reference with receiver 'null'

Compiler

Coroutines

• Major coroutines redesign - see KEEP for details

Optimizations

• KT-11734 Optimize const vals by inlining them at call site
• KT-13570 Generate TABLE/LOOKUPSWITCH if all when branches are const integer values
• KT-14746 Captured Refs should not be volatile

Various issues

• KT-10982 java.util.Map::compute* poor usability
• KT-12144 Type inference incorporation error on SAM adapter call
• KT-14196 Do not allow class literal with expression in annotation arguments
• KT-14453 Regression: Type inference failed: inferred type is T but T was expected
• KT-14774 Incorrect inner class modifier generated for sealed inner classes
• KT-14839 CompilationException when calling inline fun with first arg of 2 (w/defaults) within catch block of Java exception type
• KT-14855 Projection in type aliases should be allowed in supertypes and constructor invocations if they expand to non-toplevel projections
• KT-14887 Unhelpful error "public-API inline function cannot access non-public-API" for unresolved call inside inline function
• KT-14930 Android: creating Kotlin activity: UOE at EmptyList.removeAll()
• KT-15146 Kapt3 no source files on unittest
• KT-15272 Exception when building 2 projects at the same time

JavaScript backend

dynamic type

• KT-8207 Extension function on dynamic resolves on any type
• KT-6579 JS: prohibit to use in and !in on dynamic
• KT-6580 JS: prohibit to use more than one argument in indexed access on dynamic
• KT-13615 JS: don't generate guard for catch with dynamic type

@native/external

• KT-13893 JS: Replace @native annotation with external modifier
• KT-12877 Allow to specify module for native JS declarations
• KT-14806 JS: name of a local variable clashes with native declaration from global scope

Diagnostics

• KT-13889 JS: prohibit overriding native functions with default values assigned to parameters
• KT-13894 JS: prohibit native declaration inside non-native
• KT-13895 JS: RUNTIME annotations
• KT-13896 JS: prohibit external(native) extension functions and properties
• KT-13897 JS: prohibit native(external) files and typealiases
• KT-13910 JS: prohibit override members of native declaration with overloads
• KT-14027 JS: prohibit native inner classes
• KT-14029 JS: prohibit private members inside native declarations
• KT-14037 JS: prohibit using native interfaces in RHS of IS
• KT-14038 JS: warn when using native interface in RHS of AS
• KT-15130 JS: prohibit inheritance native from non-native
• KT-12600 JS: type check with a native interface compiles but crash at runtime
• KT-13307 KotlinJS cannot cast to a marker interface.

Language features support

• KT-13573 JS: support bound callable reference
• KT-14634 JS: support enumValues / enumValueOf
• KT-15058 JS: replace suspend function convention

Issues related to kotlin.Any

• KT-7664 JS: "x is Any" is always false
• KT-7665 JS: creating Any instance crashes on runtime
• KT-15131 JS: don't mangle Any.equals

Various issues

• KT-14033 JS: don't optimize (based on type information) by default expressions with any of "as, is, !is, as?, ?., !!"
• KT-13616 JS: don't omit guard for catch with Throwable type
• KT-12976 JS: human-friendly error message on wrong modules order
• KT-15212 JS: link unqualified names in js(...) function to local functions in outer Kotlin function by name
• KT-14750 JS: remove unnecessary functions from kotlin.js

Bugfixes

• KT-12566 JS: inner local class should refer to captured variables via its outer class
• KT-12527 Reified is-check works wrongly for chained calls
• KT-12586 JS: compiler crashes when call inline function inside string templeate
• KT-13164 Ecma TypeError on extending local class from inner one
• KT-14888 JS: Compiler error: Cannot get FQ name of local class: lazy class
• KT-14748 JS: eliminate unused functions
• KT-14999 JS: Operator set + labeled lambdas
• KT-15007 JS: Dies when checking if exception implements interface. TypeError: Cannot read property 'baseClasses' of undefined
• KT-15073 KT to JS losing extension function's receiver
• KT-15169 JS: compiler fails on annotated expression with TRE at Translation.doTranslateExpression()
• KT-13522 JS: can't use captured reified type paramter in jsClass
• KT-13784 JS: lambda was not inlined for function with reified parameter declared in another module
• KT-13792 JS: inner class of local class does not capture enclosing class properly
• KT-15327 JS: Enum valueOf should throw IllegalArgumentException

Standard library

• KT-7930 Make String.toInt(), toLong(), etc. nullable instead of throwing exception
• KT-8220 Add #peek method to Sequence similar to Stream.peek
• KT-8286 Int.toString and String.toInt with base as parameter
• KT-14034 JS: unsafeCast function
• KT-15181 Some source files are missing from published sources on Bintray

IDE

• KT-15205 Implement quick-fix for increasing module language level to enable unsupported language features

Issues fixed

• KT-14693 Introduce Type Alias: Do not suggest type qualifiers
• KT-14696 Introduce Type Alias: Fix NPE during dialog repaint
• KT-14685 Introduce Type Alias: Replace type usages in constructor calls
• KT-14861 Introduce Type Alias: Support callable references/class literals
• KT-15204 Implement navigation from header to its implementation and vice versa
• KT-15269 Quickfix for external (native) extension declarations
• KT-15293 Add 1.1 EAP repository when creating a new Gradle project with 1.1 EAP

Scripting

• KT-14538 Kotlin gradle script files appear totally unresolved
• KT-14706 Support package declaration in scripting
• KT-14707 Support javax.script.Invocable on the JSR 223 ScriptEngine
• KT-14708 kotlin-script-runtime is not published
• KT-14713 Make it possible to use JSR 223 support without specifying compiler JAR absolute path
• KT-15064 Gradle build with script .kts file: NPE at ScriptCodegen.genConstructor()

Gradle support

• KT-15080 Gradle build fails with Gradle 3.2 (master)
• KT-15120 Gradle JS test compile task doesn't pick up production code
• KT-15127 JS "compiler jar not found" with Gradle 3.2
• KT-15133 Recent gradle-script-kotlin 3.3 distributions are unusable
• KT-15218 Isolate Gradle Kotlin compiler process

1.1-M03 (EAP-3)

New language features

• KT-2964 Underscores in integer literals (see KEEP)
• KT-3824 Underscore in lambda for unused parameters (see KEEP)
• KT-2783 Allow to skip some components in a multi-declaration (see the same KEEP)
• KT-11551 limited scope for dsl writers (see KEEP)

Compiler

Coroutines related issues

• Make fields for storing lambda parameters non-final (as they get assigned within invoke call)
• KT-14719 Make initial continuation able to be resumed with exception
• KT-14636 Coroutine fields should not be volatile
• KT-14718 Validate label value of coroutine in case of no suspension points

Typealises related issues

• KT-13514 Type inference doesn't work with generic typealiases
• KT-13837 Error "Type alias expands to T, which is not a class, an interface, or an object" should also appear for local type aliases
• KT-14307 Local recursive type alias should be an error
• KT-14400 Compiler Error IllegalStateException: kotlin.NotImplementedError when anonymous object inherits from typealias
• KT-14377 Expected error: Modifier 'companion' is not applicable to 'typealias'
• KT-14498 typealias allows to circumvent variance annotations
• KT-14641 An exception while processing a nested type alias access after a dot

Various issues

• KT-550 Properties without initializer but with get must infer type from getter
• KT-8816 Generate Kotlin parameter names in the same form as expected for Java 8 reflection
• KT-10569 Cannot iterate over values of an enum class when it is used as a generic parameter (see KEEP)
• KT-13557 VerifyError with delegated local variable used in object expression
• KT-13890 IllegalAccessError when invoking protected method with default arguments
• KT-14012 Back-end (JVM) Internal error every first compilation after the source code change
• KT-14201 UnsupportedOperationException: Don't know how to generate outer expression for anonymous object with invoke and non-trivial closure
• KT-14318 Repeated annotations resulting from type alias expansion should be reported
• KT-14347 Report UNUSED_PARAMETER/VARIABLE on named unused lambda parameters/destructuring entries
• KT-14352 @SinceKotlin is not taken into account for companion object member referenced via type alias
• KT-14357 Try-catch used in false condition generates CompilationException
• KT-14502 Prohibit irrelevant modifiers and annotations on destructured parameters in lambda
• KT-14692 Change resolution scope for componentX in lambda parameters
• KT-14824 Back-end (JVM) Internal error: Couldn't inline method call 'get' into local final fun StorageComponentContainer.(): kotlin.Unit
• KT-14798 Gradle 3.2 AssertionError: Built-in class kotlin.ParameterName is not found

JS

Feature support

• KT-6985 Support Exceptions in JS
• KT-13574 JS: support coroutines
• KT-14422 JS: Support destructuring in lambda parameters
• KT-14507 JS: allow to skip some components in a multi-declaration

Library updates

• KT-14637 JS: Missing ArrayList.ensureCapacity

Other issues

• KT-2328 js: kotlin exceptions must inherit Error
• KT-5537 Drop Cloneable in JS
• KT-7014 JS: generate code which more friendly to js tools (minifier, optimizer, linter etc)
• KT-8019 JS: no stackTrace in exception subclasses
• KT-10911 JS: Throwable properties aren't supported well
• KT-13912 JS: Compiler NPE at JsSourceGenerationVisitor. Lambda with empty [if] block passed to inline function
• KT-14535 JS: Broken modification of captured variables defined by a destructuring declaration

Standard Library

• KT-2084 Common API should be available without referring to java.* packages

  Now those common types, which are supported on all platforms, are available in kotlin.* packages, and are imported by default. These include:

  • ArrayList, HashSet, LinkedHashSet, HashMap, LinkedHashMap in kotlin.collections
  • Appendable and StringBuilder in kotlin.text
  • Comparator in kotlin.comparisons On JVM these are just typealiases of the good old types from java.util and java.lang

• KT-13554 Introduce bitwise operations and/or/xor/inv for Byte and Short

• KT-13582 New platform-agnostic extensions for arrays: contentEquals to compare arrays' content for equality, contentHashCode to get hashcode of array's content, and contentToString to get the string representation of array elements.

• KT-14510 Generic constraints of Array.flatten signature were relaxed a bit to make it just usable.

• KT-14789 Provide KotlinVersion class, which allows to get the current version of the standard library and compare it with some other KotlinVersion value.

IDE

• KT-14409 Incorrect "Variable can be declared immutable" inspection for local delegated variable
• KT-14431 Create quick-fix on UNUSED_PARAMETER/VARIABLE when it can be replaced with one underscore
• KT-14794 Add /Specify type/Remove explicit type intentions for property with getters if type can be inferred
• KT-14752 Exception while typing @JsName annotation in editor

1.1-M02 (EAP-2)

Language features

• Destructuring for lambdas (proposal)

  Current limitations:

  • Nested destructuring is not supported
  • Destructuring in named functions/constructors is not supported
  • Is not supported for JS target

Compiler

Smart cast enhancements

• KT-2127 Smart cast receiver to not null after a not null safe call
• KT-6840 Make data flow information the same for assigned and assignee
• KT-13426 Fix exception when smartcast on both dispatch & extension receiver

Bound references related issues

• KT-12995 Do not skip generation of the left-hand side for intrinsic bound references and class literals
• KT-13075 Fix codegen for bound class reference
• KT-13110 Fix type mismatch error on class literal with integer receiver expression
• KT-13172 Report error on "this::class" in super constructor call
• KT-13271 Fix incorrect unsupported error on synthetic extension call on LHS of ::
• KT-13367 Inline bound callable reference if it's used only as a lambda

Coroutines related issues

• KT-13156 Do not execute last Unit-typed coroutine statement twice
• KT-13246 Fix VerifyError with coroutines on Dalvik
• KT-13289 Fix VerifyError with coroutines: Bad type on operand stack
• KT-13409 Fix generic variable spilling with coroutines
• KT-13531 Fix ClassCastException when coercion to Unit interacts with generic await() and coroutines
• Prohibit Continuation<*> as a last parameter of suspend functions
• KT-13560 Prohibit non-Unit suspend functions

Typealises related issues

• KT-13200 Fix incorrect number of required type arguments reported on typealias
• KT-13181 Fix unresolved reference for a type alias from a different module
• KT-13161 Support java static methods calls with typealiases
• KT-13835 Do not lose nullability information while expanding type alias in projection position
• KT-13422 Prohibit usage of type alias to exception class as an object in 'throw' expression
• KT-13735 Fix NoSuchMethodError for generic typealias access
• KT-13513 Support SAM constructors for aliased java functional types
• KT-13822 Fix exception for start-projection of a type alias
• KT-14071 Prohibit using type alias as a qualifier for super
• KT-14282 Report error on unused type alias with -language-version 1.0
• KT-14274 Fix type alias resolution when it's used for supertype constructor call

JDK dependent built-in classes related issues

• KT-13209 Change first parameter's type of Map.getOrDefault to K instead of Any
• KT-13069 Do not emit invalid DefaultImpls delegation when interface extends MutableMap with JDK8

data classes and inheritance

• KT-11306 Allow data classes to implement equals/hashCode/toString from base classes

Various JVM code generation issues

• KT-13182 Fix compiler internal error at inline
• KT-13757 Prohibit referencing nested classes by name with $
• KT-12985 Do not create range instances for 'for' loop in CharSequence.indices
• KT-13931 Optimize generated code for IntRange#contains

Various analysis & diagnostic issues

• KT-435 Use parameter names in error messages when calling a function-valued expression
• KT-10001 Fix false unnecessary non-null assertion on a pair element
• KT-12811 Treat function declaration as final if it is a member of a final class
• KT-13961 Report REDECLARATION on private-in-file 'foo' vs public 'foo' in different file

JS

Feature support

• KT-13544 Support type aliases in JS
• KT-13345 Support class literals in JS

Library updates

• KT-18 Move exceptions from java.lang to kotlin package
• KT-12386 Rewrite JS collections in Kotlin, move them to kotlin.collections package
• KT-7809 Make Collection implementations conform to their declared interfaces
• KT-7473 Make AbstractCollection.equals check object type
• KT-13429 Make 'remove' on fresh iterator throw exception instead of removing last element
• KT-13459 Make JS implementation of ArrayList::add(index, element) check the index is in valid range
• KT-8724 Fix MutableIterator.remove() for HashMap
• KT-10786 Make Map.keys return view of map keys instead of snapshot
• KT-14194 Make HashMap.putAll implementation not to call getKey/getValue

Standard Library

Backward compatibility

• KT-14297 Add @SinceKotlin annotation to support compatibility with compilation against older standard library
• KT-14213 Ensure printStackTrace can be called with -language-version 1.0

Enhancements

• KEEP-53 Provide two distinct hierarchies of abstract collections: one for implementing read-only/immutable collections, and other for implementing mutable collections
• KEEP-13 Provide extension functions to copy maps
• KT-18 Introduce type aliases for common exceptions from java.lang in kotlin package
• KT-12762 Make kotlin.ranges.until return an empty range for "illegal" 'to' parameter
• KT-12894 Allow nullable receiver for use extension

Reflection

New features

• KT-8998 Introduce comprehensive API to work with KType instances
• KT-10447 Provide a way to check if a KClass is a data class
• KT-11284 Add KClass.cast extension
• KT-13106 Support annotation constructors in reflection

Optimizations

• KT-10651 Optimize KClass.simpleName

IDE

New features

• KT-12903 Implement "Inline type alias" refactoring
• KT-12902 Implement "Introduce type alias" refactoring
• KT-12904 Implement "Create type alias from usage" quick fix
• KT-9016 Make use of named higher order function parameters
• KT-12205 Suggest import of Kotlin static members in editor with Java source
• KT-13941 Implement intention for introducing destructured lambda parameters when it's possible
• KT-13943 Implement inspection and quickfix for to detect a manual destructuring of for / lambda parameter

Issues fixed

• KT-13004 Support bound method references in completion
• KT-13242 Suggest 'typealias' keyword in completion
• KT-13244 Override/Implement Members: Do not expand type aliases in the generated members
• KT-13611 Go to Class: Fix presentation of type aliases
• KT-13759 Rename: Process object-wrapping alias references
• KT-13955 Find Usages: Add special type for usages inside of type aliases
• KT-13479 Support navigation to type aliases from binaries
• KT-13766 Fix optimize imports not to add wrong and unnecessary import because of type alias
• KT-12949 Consider type aliases as candidates for import
• KT-13266 Suggest non-imported type aliases in completion
• KT-13689 Do not treat type alias constructor usage as original type usage for optimize imports

Scripting

• A new library kotlin-script-util containing utilities for implementing kotlin script support
• KT-7880 Experimental support for JSR 223 Scripting API
• KT-13975, KT-14264 Convert error on retrieving gradle plugin settings to warning
• Implement support for custom template-based scripts in command-line compiler, maven and gradle plugins

1.1-M01 (EAP-1)

Language features

• Coroutines (async/await, generators) (proposal)

  Current limitations:

  • for some cases type inference is not supported yet
  • limited IDE support
  • allowed only one handleResult function: design
  • handling finally blocks is not supported: issue

• Bound callable references (proposal)

• Type aliases (proposal)

  Current limitations:

  • type alias constructors for inner classes are not supported yet
  • annotations on type alias are not supported yet
  • limited IDE support

• Local delegated properties (proposal)

• JDK dependent built-in classes (proposal)

• Sealed class inheritors in the same file (proposal)

• Allow base classes for data classes (proposal)

Scripting

• Implement support for Script Definition Template and related functionality, except the following parts:
  • automatic script templates discovery is not implemented
  • @file:ScriptTemplate annotation is not supported
  • the parameters javaHome and scripts from KotlinScriptExternalDependencies are not used yet
• Implement support for custom template-based scripts in IDEA: resolving, completion and navigation to symbols from script classpath and sources
• Implement GradleScriptTemplatesProvider extension that supplies a script template if gradle with kotlin script support is used in the project

Compiler

Issues fixed

• KT-4779 Generate default methods for implementations in interfaces
• KT-11780 Fixed incorrect "No cast needed" warning
• KT-12156 Fixed incorrect error on inline modifier inside final class
• KT-12358 Report missing error "Abstract member not implemented" when a fake method of 'Any' is inherited from an interface
• KT-6206 Generate equals/hashCode/toString in data class always unless it'll cause a JVM signature clash error
• KT-8990 Fixed incorrect error "virtual member hidden" for a private method of an inner class
• KT-12429 Fixed visibility checks for annotation usage on top-level declarations
• KT-5068 Introduced a special diagnostic message for "type mismatch" errors such as fun f(): Int = { 1 }.

Standard Library

• KT-8254 Provide standard library supplement artifacts for using with JDK 7 and 8. These artifacts include extensions for the types available in the latter JDKs, such as AutoCloseable.use (KT-5899) or Stream.toList.
• KT-12753 Provide an access to named group matches of Regex match result (for JDK 8 only).
• Add assertFails overload with message to kotlin-test.

IDE

New features

• KT-12019 Introduce "redundant if" inspection

Issues fixed

• KT-12389 Do not exit from REPL when toString() of user class throws an exception
• KT-12129 Fixed link on api reference page in KDoc

1.0.7

IDE

• Project View: Fix presentation of Kotlin files and their members when @JvmName having the same name as the file itself
• KT-15611 Extract Interface/Superclass: Disable const-properties
• Pull Up: Fix pull-up from object to superclass
• KT-15602 Extract Interface/Superclass: Disable "Make abstract" for inline/external/lateinit members
• Extract Interface: Disable inline/external/lateinit members
• KT-12704, KT-15583 Override/Implement Members: Support all nullability annotations respected by the Kotlin compiler
• KT-15563 Override Members: Allow overriding virtual synthetic members (e.g. equals(), hashCode(), toString(), etc.) in data classes
• KT-15355 Extract Interface: Disable "Make abstract" and assume it to be true for abstract members of an interface
• KT-15353 Extract Superclass/Interface: Allow extracting class with special name (and quotes)
• KT-15643 Extract Interface/Pull Up: Disable "Make abstract" and assume it to be true for primary constructor parameter when moving to an interface
• KT-15607 Extract Interface/Pull Up: Disable internal/protected members when moving to an interface
• KT-15640 Extract Interface/Pull Up: Drop 'final' modifier when moving to an interface
• KT-15639 Extract Superclass/Interface/Pull Up: Add spaces between 'abstract' modifier and annotations
• KT-15606 Extract Interface/Pull Up: Warn about private members with usages in the original class
• KT-15635 Extract Superclass/Interface: Fix bogus visibility warning inside a member when it's being moved as abstract
• KT-15598 Extract Interface: Red-highlight members inherited from a super-interface when that interface reference itself is not extracted
• KT-15674 Extract Superclass: Drop inapplicable modifiers when converting property-parameter to ordinary parameter
• KT-15444 Spring Support: Consider declaration open if it's supplemented with a preconfigured annotation in corresponding compiler plugin

Intention actions, inspections and quickfixes

New features

• KT-15068 Implement intention which rename file according to the top-level class name
• Implement quickfix which enables/disables coroutine support in module or project
• KT-15056 Implement intention which converts object literal to class
• KT-8855 Implement "Create label" quick fix
• KT-15627 Support "Change parameter type" for parameters with type-mismatched default value

1.0.6

IDE

• KT-13811 Expose JVM target setting in IntelliJ IDEA plugin compiler configuration UI
• KT-12410 Expose language version setting in IntelliJ IDEA plugin compiler configuration UI

Intention actions, inspections and quickfixes

• KT-14569 Convert Property to Function Intention: Search occurrences using progress dialog
• KT-14501 Create from Usage: Support array access expressions/binary expressions with type mismatch errors
• KT-14500 Create from Usage: Suggest functional type based on the call with lambda argument and unresolved invoke()
• KT-14459 Initialize with Constructor Parameter: Fix IDE freeze on properties in generic class
• KT-14044 Fix exception on deleting unused declaration in IDEA 2016.3
• KT-14019 Create from Usage: Support generation of abstract members for superclasses
• KT-14246 Intentions: Convert function type parameter to receiver
• KT-14246 Intentions: Convert function type receiver to parameter

New features

• KT-14729 Implement "Add names to call arguments" intention
• KT-11760 Create from Usage: Support adding type parameters to the referenced type

Refactorings

• KT-14583 Change Signature: Use new signature when looking for redeclaration conflicts
• KT-14854 Extract Interface: Fix NPE on dialog opening
• KT-14814 Rename: Fix renaming of .kts file to .kt and vice versa
• KT-14361 Rename: Do not report redeclaration conflict for private top-level declarations located in different files
• KT-14596 Safe Delete: Fix exception on deleting Java class used in Kotlin import directive(s)
• KT-14325 Rename: Fix exceptions on moving file with facade class to another package
• KT-14197 Move: Fix callable reference processing when moving to another package
• KT-13781 Extract Function: Do not wrap companion member references inside of the with call

New features

• KT-14792 Rename: Suggest respective parameter name for the local variable passed to function

1.0.5

IDE

• KT-9125 Support Type Hierarchy on references inside of super type call entries
• KT-13542 Rename: Do not search parameter text occurrences outside of its containing declaration
• KT-8672 Rename: Optimize search of parameter references in calls with named arguments
• KT-9285 Rename: Optimize search of private class members
• KT-13589 Use TODO() consistently in implementation stubs
• KT-13630 Do not show Change Signature dialog when applying "Remove parameter" quick-fix
• Re-highlight only single function after local modifications
• KT-13474 Fix performance of typing super call lambda
• Show "Variables and values captured in a closure" highlighting only for usages
• KT-13838 Add file name to the presentation of private top-level declaration (Go to symbol, etc.)
• KT-14096 Rename: When renaming Kotlin file outside of source root do not rename its namesake in a source root
• KT-13928 Move Inner Class to Upper Level: Fix replacement of outer class instances used in inner class constructor calls
• KT-12556 Allow using whitespaces and other symbols in "Generate -> Test Function" dialog
• KT-14122 Generate 'toString()': Permit for data classes
• KT-12398 Call Hierarchy: Show Kotlin usages of Java methods
• KT-13976 Search Everywhere: Render function parameter types
• KT-13977 Search Everywhere: Render extension type in prefix position
• Implement Kotlin facet

Intention actions, inspections and quickfixes

• KT-9490 Convert receiver to parameter: use template instead of the dialog
• KT-11483 Move to Companion: Do not use qualified names as labels
• KT-13874 Move to Companion: Fix AssertionError on running refactoring from Conflicts View
• KT-13883 Move to Companion Object: Fix exception when applied to class
• KT-13876 Move to Companion Object: Forbid for functions/properties referencing type parameters of the containing class
• KT-13877 Move to Companion Object: Warn if companion object already contains function with the same signature
• KT-13933 Convert Parameter to Receiver: Do not qualify companion members with labeled 'this'
• KT-13942 Redundant 'toString()' in String Template: Disable for qualified expressions with 'super' receiver
• KT-13878 Remove Redundant Receiver Parameter: Fix exception receiver removal
• KT-14143 Create from Usages: Do not suggest on type-mismatched expressions which are not call arguments
• KT-13882 Convert Receiver to Parameter: Fix AssertionError
• KT-14199 Add Library: Fix exception due to resolution being run in the "dumb mode"
• Convert Receiver to Parameter: Fix this replacement

New features

• KT-11525 Implement "Create type parameter" quickfix
• KT-9931 Implement "Remove unused assignment" quickfix
• KT-14245 Implement "Convert enum to sealed class" intention
• KT-14245 Implement "Convert sealed class to enum" intention

Refactorings

• KT-13535 Pull Up: Remove visibility modifiers on adding 'override'
• KT-13216 Move: Report separate conflicts for each property accessor
• KT-13216 Move: Forbid moving of enum entries
• KT-13553 Move: Do not show directory selection dialog if target directory is already specified by drag-and-drop
• KT-8867 Rename: Rename all overridden members if user chooses to refactor base declaration(s)
• Pull Up: Drop 'override' modifier if moved member doesn't override anything
• KT-13660 Move: Do not drop object receivers when calling variable of extension functional type
• KT-13903 Move: Remove companion object which becomes empty after the move
• KT-13916 Move: Report visibility conflicts in import directives
• KT-13906 Move Nested Class to Upper Level: Do not show directory selection dialog twice
• KT-13901 Move: Do not ignore target directory selected in the dialog (DnD mode)
• KT-13904 Move Nested Class to Upper Level: Preserve state of "Search in comments"/"Search for text occurrences" checkboxes
• KT-13909 Move Files/Directories: Fix behavior of "Open moved files in editor" checkbox
• KT-14004 Introduce Variable: Fix exception on trying to extract variable of functional type
• KT-13726 Move: Fix bogus conflicts due to references resolving to wrong library version
• KT-14114 Move: Fix exception on moving Kotlin file without declarations
• KT-14157 Rename: Rename do-while loop variables in the loop condition
• KT-14128, KT-13862 Rename: Use qualified class name when looking for occurrences in non-code files
• KT-6199 Rename: Replace non-code class occurrences with new qualified name
• KT-14182 Move: Show error message on applying to enum entries
• Extract Function: Support implicit abnormal exits via Nothing-typed expressions
• KT-14285 Rename: Forbid on backing field reference
• KT-14240 Introduce Variable: Do not replace assignment left-hand sides
• KT-14234 Rename: Do not suggest type-based names for functions with primitive return types

New features

• KT-13155 Implement "Introduce Type Parameter" refactoring
• KT-11017 Implement "Extract Superclass" refactoring
• KT-11017 Implement "Extract Interface" refactoring Pull Up: Support properties declared in the primary constructor Pull Up: Support members declared in the companion object of the original class Pull Up: Show member dependencies in the refactoring dialog
• KT-9485 Push Down: Support moving members from Java to Kotlin class
• KT-13963 Rename: Implement popup chooser for overriding members

Android Lint

Issues fixed

• KT-12022 Report lint warnings even when file contains errors

1.0.4

Compiler

Analysis & diagnostics

• KT-10968, KT-11075, KT-12286 Type inference of callable references
• KT-11892 Report error on qualified super call to a supertype extended by a different supertype
• KT-12875 Report error on incorrect call of member extension invoke
• KT-12847 Report error on accessing protected property setter from super class' companion
• KT-12322 Overload resolution ambiguity with constructor reference when class has a companion object
• KT-11440 Overload resolution ambiguity on specialized Map.put implementation from Java
• KT-11389 Runtime exception when calling Java primitive overloadings
• KT-8200 Exception when using non-generic interface with generic arguments
• KT-10237 Exception on an unresolved symbol in a type parameter bound in the 'where' clause
• KT-11821 Exception on incorrect number of generic arguments in a type parameter bound in the 'where' clause
• KT-12482 Exception: Implementation doesn't have the most specific type, but none of the other overridden methods does either
• KT-12687 Exception when 'data' modifier is applied to object
• KT-9620 AssertionError in DescriptorResolver#checkBounds
• KT-3689 IllegalAccess on a property with private setter of the subclass
• KT-6391 Wrong warning for array casting (Array<Any?> to Array)
• KT-8596 Exception when analyzing nested class constructor reference in an argument position
• KT-12982 Incorrect type inference when accessing mutable protected property via reflection
• KT-13206 Report "Cast never succeeds" if and only if ClassCastException can be predicted
• KT-12467 IllegalStateException: Concrete fake override should have exactly one concrete super-declaration: []
• KT-13340 Report "return is not allowed here" only on the return keyword, not the whole expression
• KT-2349, KT-6054 Report "uninitialized enum entry" if enum entry is referenced before its declaration
• KT-12809 Report "uninitialized variable" if property is referenced before its declaration
• KT-260 Do not report "cast never succeeds" when casting nullable to nullable
• KT-11769 Prohibit access from enum instance initialization code to members of enum's companion object
• KT-13371 Fix CompilationException: Rewrite at slice LEAKING_THIS key: REFERENCE_EXPRESSION
• KT-13401 Fix StackOverflowError when checking variance
• KT-13330, KT-13349 Fix AssertionError: Illegal resolved call to variable with invoke
• KT-13421 Fix AssertionError: Only integer constants should be checked for overflow
• KT-13555 Fix internal error "resolveToInstruction"
• KT-8989 Change error messages: Replace "invisible_fake" with "invisible (private in a supertype)"
• KT-13612 Val reassignment in try / catch
• KT-5469 Incorrect "is never used" warning for value used in catch block
• KT-13510 Missing "Nested class not allowed" error for anonymous object inside val initializer
• KT-13685 Fix NPE when resolving callable references on incomplete code
• Change error messages: Fix quotes around keywords in diagnostic messages
• Change error messages: Remove quotes around visibilities

Parser

• KT-7118 Improve error message after trailing dot in floating point literal
• KT-4948 Recover by following keyword
• KT-7915 Recover after val with no subsequent name
• KT-12987 Recover after val with no name before declaration starting with soft keyword

JVM code generation

• KT-12909 Do not generate redundant bridge for special built-in override
• KT-11915 Exception in entrySet when Map implementation in Kotlin extends another one
• KT-12755 Exception on property generation in multi-file classes
• KT-12983 VerifyError: Bad type on operand stack in arraylength
• KT-12908 Variable initialization in loop causes VerifyError: Bad local variable type
• KT-13040 Invalid bytecode generated for extension lambda invocation with safe call
• KT-13023 Char operations throw ClassCastException for boxed Chars
• KT-11634 Exception for super call in delegation
• KT-12359 Redundant stubs are generated on inheriting from java.util.Collection
• KT-11833 Error generating constructors of class on anonymous object inheriting from nested class of super class
• KT-13133 Incorrect InnerClasses attribute value for anonymous object copied from an inline function
• KT-13241 Indices optimization leads to VerifyError with smart cast receiver
• KT-13374 Fix compiler exception when inline function contains anonymous object implementing an interface by delegation

Generated code performance

• KT-11964 No TABLESWITCH in when on enum bytecode if enum constant is imported
• KT-6916 Optimize 'for' over 'downTo'
• KT-12733 Optimize 'for' over 'rangeTo' as a non-qualified call

Standard Library

• KT-13115, KT-13297 Improve documentation formatting, clarify documentation for FileTreeWalk, Sequence and generateSequence.
• KT-12894 Do not fail in Closeable.use if the resource is null.

Reflection

• KT-12915 Runtime exception on callBy of JvmStatic function with default arguments
• KT-12967 Runtime exception on reference to generic property
• KT-13370 NullPointerException on companionObjectInstance of a built-in class
• KT-13462 Make KClass for primitive type equal to the corresponding KClass for wrapper type

IDE

• KT-12655 New Kotlin file: extra error message for already existing file
• KT-12760 Prohibit running non-Unit returning main function
• KT-12893 Impossible to open Kotlin compiler settings
• KT-10433 Copy-pasting reference to companion object member causes import dialog
• KT-12803 Class is marked as unused when it is only used is in method reference
• KT-13084 Run test method action executes all tests from same kotlin file
• KT-12718 Deadlock due to index reentering
• KT-13114 'Unused declaration' option 'JUnit static methods' is always enabled
• KT-12997 Override/Implement Members: Support "Copy JavaDoc" options for library classes
• KT-12887 "Extend selection" should select call's invoked expression
• KT-13383, KT-13379 Override/Implement Members: Do not make return type non-nullable if base return type is explicitly nullable
• KT-13218 Extract Function: Fix AssertionError on callable references
• KT-6520 Introduce 'maino' and 'psvmo' templates for generating main in object
• KT-13455 Override/Implement: Make return type non-nullable (platform collection case) when overriding Java method
• KT-10209 Find Usages: Do not duplicate containing declaration in super member warning dialog
• KT-12977 Hybrid dependency causes "outdated binary" warning to appear in non-js project
• KT-13057 Go to inheritors on Enum should navigate to all enum classes
• Fix exception when choose Gradle configurer after project is synced
• Allow configuring Kotlin in Gradle module without Kotlin sources
• Show all Kotlin annotations when browsing hierarchy of "java.lang.Annotation"

Completion

• KT-12793 Suggest abstract protected extension methods

Performance

• KT-12645 Lazily calculate FQ name for local classes
• KT-13071 Fix severe freezes because of long lint checks on large files

Highlighting

• KT-12937 Java synthetic accessors highlighting does not differ from local variables

KDoc

• KT-12998 Backslash is not rendered
• KT-12999 Backtick inside inline code block is not rendered
• KT-13000 Exclamation mark is not rendered
• KT-10398 Fully qualified link is not resolved in editor
• KT-12932 Link to library element is not clickable
• KT-10654 Quick Doc can't follow KDoc link in referenced function description
• KT-9271 Show Quick Doc for implicit lambda parameter 'it'

Formatter

• KT-12830 Remove spaces before ? in nullable types
• KT-13314 Format spaces around !is and !in

Intention actions, inspections and quickfixes

New features

• KT-12152 "Leaking this" inspection reports dangerous operations inside constructors including:

  • Accessing non-final property in constructor
  • Calling non-final function in constructor
  • Using 'this' as function argument in constructor of non-final class

• KT-13187 "Make constructor parameter a val" should make the val private or public depending on its option

• KT-5771 Mark setter parameter type as redundant and provide quickfix to remove it

• KT-9228 Add quickfix to remove '@' from annotation used as argument of another annotation

• KT-12251 Add quickfix to fix type mismatch for primitive literals

• KT-12838 Add quickfix for "Illegal usage of inline parameter" that adds noinline

• KT-13134 Add quickfix for wrong Long suffix (Use L instead of l)

• KT-10903 Add intention to convert lambda to function reference

• KT-7492 Support "Create abstract function/property" inside an abstract class

• KT-10668 Support "Create member/extension" corresponding to the extension receiver of enclosing function

• KT-12553 Show versions in inspection about different version of Kotlin plugin in Maven and IDE plugin

• KT-12489 Implement intention to replace camel-case test function name with a space-separated one

• KT-12730 Warn about using different versions of Kotlin Gradle plugin and bundled compiler

• KT-13173 Handle more cases in "Add Const Modifier" Intention

• KT-12628 Quickfix for invoke operator unsafe calls

• KT-11425 Inspection and quickfix to replace usages of equals() and compareTo() with operators

• KT-13113 Inspection to detect redundant string templates

• KT-13011 Inspection and quickfix for unnecessary lateinit

• KT-10731 Inspection and quickfix for unnecessary use of toString() inside string interpolation

• KT-12043 Intention to add / remove braces for when entry/entries

• KT-13483 Intention to replace a..b-1 with a until b and vice versa

• KT-6975 Quickfix for adding 'inline' to a function with reified generic

Bugfixes

• Show receiver type in the text of "Create extension" quick fix
• Show target class name in the text of "Create member" quick fix
• KT-12869 Usages of overridden Java method through synthetic accessors are not found
• KT-12813 "Find Usages" for property returns function calls
• KT-7722 Approximate unresolvable types in "Create from Usage" quickfixes
• KT-11115 Implement Members: Fix base member detection when abstract and non-abstract members with matching signatures are inherited from an interface
• KT-12876 Bogus suggestion to move property to constructor
• KT-13055 Exception in "Specify Type Explicitly" intention
• KT-12942 "Replace 'when' with 'if'" intention changes semantics when 'if' statements are used
• KT-12646 'Convert to block body' should use partial body resolve
• KT-12919 Use simple class name in "Change function return type" quickfix
• KT-13151 Incorrect warning "Make variable immutable"
• KT-13170 "Declaration has platform type" inspection: by default should not be reported for platform type arguments
• KT-13262 "Wrap with safe let call" quickfix produces wrong result for qualified function
• KT-13364 Do not suggest creating annotations/enum classes for unresolved type parameter bounds
• KT-12627 Allow warnings suppression for secondary constructor
• KT-13365 Disable "Create property" (non-abstract) in interfaces. Make "Create function" (non-abstract) generate function body in interfaces
• KT-8903 Remove Unused Receiver: update function/property usages
• KT-11799 Create from Usage: Make extension functions/properties 'private' by default
• KT-11795 Create from Usage: Place extension properties after the usage and generate stub getter
• KT-12951 Prohibit "Convert to expression body" when function body is 'if' without 'else' or 'when' is non-exhaustive
• KT-13430 "Add non-null asserted (!!) call" quickfix can't process unary operators
• KT-13336 "Convert concatenation to template" intention appends literal to variable omitting braces
• KT-13328 Do not suggest "Replace infix with safe call" inside conditions or binary / unary expressions
• KT-13452 "Replace if expression with assignment" doesn't work for cascade if-else if-else
• KT-13184 "Different Kotlin Version" inspection: false positive caused by verbose plugin version name
• KT-13480 "Can be replaced with comparison" inspection: false positive if extension method called 'equals' is used
• KT-13288 "Unused property" inspection: false positive when extending abstract class and implementing interface
• KT-13432 "Replace with safe call" quickfix does not work with compareTo() usage
• KT-13444 "Invert if" intention changes semantics for nested if with return
• KT-13536 Fix StackOverflowError from "Unused Symbol" inspection after importing enum's values()
• KT-12820 Platform Type Inspection: !! quickfix shouldn't be available when any generic parameter has platform type
• KT-9825 Incorrect "unused variable" warning when used in finally block
• KT-13715 Prohibit applying "Change to star projection" to functional types

Refactorings

New features

• KT-12017 Inline Property: Support "Do not show this dialog" and "Inline this occurrence" options

Bugfixes

• KT-11176 Add a space before '{' in functions generated "Generate hashCode/equals/toString"
• KT-12294 Introduce Property: Fix extraction of expressions referring to primary constructor parameters
• KT-12413 Change Signature: Fix bogus warning about unresolved type parameters/invalid functional type replacement
• KT-12084 Introduce Property: Do not skip outer classes if extractable expression is contained in object literal
• KT-13082 Rename: Fix exception on property rename preview
• KT-13207 Safe delete: Fix exception when removing any function in 2016.2
• KT-12945 Rename: Fix function description in super method warning dialog
• KT-12922 Introduce Variable: Do not suggest expressions without type
• KT-12943 Rename: Show function signatures in "Rename Overloads" dialog
• KT-13157 Extract Function: Automatically quote function name if necessary
• KT-13010 Extract Function: Fix generation of destructuring declarations
• KT-13128 Introduce Variable: Retain entered name after changing "Specify type explicitly" option
• KT-13054 Introduce Variable: Skip leading/trailing comments inside selection
• KT-13385 Move: Quote package name (if necessary) when moving declarations to new file
• KT-13395 Introduce Property: Fix duplicate count in popup window
• KT-13277 Change Signature: Fix usage processing to prevent interfering with Python support plugin
• KT-13254 Rename: Conflict detection for type parameters
• KT-13282, KT-13283 Rename: Fix name quoting for automatic renamers
• KT-13239 Rename: Warn about function name conflicts
• KT-13174 Move: Warn about accessibility conflicts due to moving to unrelated module
• KT-13175 Move: Warn about accessibility conflicts when moving entire file
• KT-13240 Rename: Do not report shadowing conflict if redeclaration is detected
• KT-13253 Rename: Report conflicts for constructor parameters
• KT-12971 Push Down: Do not specifiy visibility on generated overriding members
• KT-13124 Pull Up: Skip super members without explicit declarations
• KT-13032 Rename: Support accessors with non-conventional names
• KT-13463 Rename: Quote parameter name when necessary
• KT-13476 Rename: Fix parameter rename when new name matches call selector
• KT-9381 Rename: Do not search for component convention usages
• KT-13488 Rename: Support rename of packages with non-standard quoted names

Debugger

New features

• KT-7549 Provide an option to use the Kotlin syntax when evaluating watches and expressions in Java files

Bugfixes

• KT-13059 Fix error stepping on Step Over action in the end of while block
• KT-13037 Fix possible deadlock in debugger in 2016.1 and exception in 2016.2
• KT-12651 Fix exception in evaluate expression when bad identifier is used for marking object
• KT-12896 Fix "Step In" to inline functions for Android
• KT-13269 Make quick evaluate work on receiver in qualified expressions
• KT-12641 Unknown error on evaluate expression containing inline functions with complicated environment
• KT-13163 Fix exception when evaluating expression: Access is allowed from event dispatch thread only.

JS

New features

• KT-3008 Option to generate require.js and AMD compatible modules
• KT-5987 Add ability to refer to class
• KT-4115 Provide method to get Kotlin type name

Bugfixes

• KT-8003 Compiler exception on 'throw throw'
• KT-8318 Wrong result for 'when' containing only 'else' block
• KT-12157 Compiler exception on when condition containing return, break or continue
• KT-12275 Fix code generation with inline function call in condition of while/do..while
• KT-13160 Fix compiler exception when left-hand side of assignment is array access and right-hand side is inline function
• KT-12864 Make enums comparable
• KT-12865 Implementing Comparable breaks inheritance
• KT-12928 Nested inline causes undefined reference access
• KT-12929 Code with callable reference crashed at runtime (in some JS VMs)
• KT-13043 Invalid invocation generated for secondary constructor that calls constructor from base class with default parameters
• KT-13025 'function?.invoke' does not work properly with extension functions
• KT-12807 Lambda was lost in generated code
• KT-12808 Compiler duplicates arguments and the body of lambda when lambda is in RHS of assignment operator
• KT-12873 Fix ReferenceError when class delegates to complex expression
• KT-13658 Wrong code when capturing object

Tools

Gradle

• Gradle versions < 2.0 are not supported
• KT-13234 Setting kotlinOptions.destination and kotlinOptions.classpath is deprecated
• KT-9392 Kotlin classes are missing after converting Java class to Kotlin
• KT-12736 Kotlin classes are deleted when generated Java source is changed
• KT-12658 Build fails after android resources are edited
• KT-12750 Non clean compilation fails with gradle 2.14
• KT-12912 New class from subproject is unresolved with subsequent build with Gradle Daemon
• KT-12962 Incremental compilation: Track changes in generated files
• KT-12923 Incremental compilation: Compile error when code using internal class is modified
• KT-13528 Incremental compilation: support multi-project incremental compilation
• KT-13732 Android Build folder littered with copyFlavourTypeXXX

KAPT

New features

• KT-13499 Implement Annotation Processing API (JSR 269) natively in Kotlin

Bugfixes

• KT-12776 Android build fails with KAPT and generateStubs depending on library module names
• KT-13179 Java is recompiled every time with Gradle 2.14 and KAPT
• KT-12303, KT-12113 Do not pass non-relevant annotations to processors

REPL

• KT-12389 REPL just quits when toString() of user class throws an exception

CLI & Ant

• KT-13237 Include kotlin-reflect.jar to classpath by default, add '-no-reflect' key to suppress this behavior

CLI

• KT-13491 Support '-no-reflect' in 'kotlin' command

Maven

• KT-13211 Provide better compilation failure info for TeamCity builds

Compiler daemon

• Fix exception "java.lang.NoClassDefFoundError: Could not initialize class kotlin.Unit"

1.0.3

Compiler

Analysis & diagnostics

• Combination of open and override is no longer a warning
• KT-4829 Equal conditions in when is now a warning
• KT-6611 "This cast can never succeed" warning is no longer reported for Foo<T> as Foo<Any>
• KT-7174 Declaring members with the same signature as non-overridable methods from Java classes (like Object.wait/notify) is now an error (when targeting JVM)
• KT-12302 abstract modifier for a member of interface is no longer a warning
• KT-12452 open modifier for a member of interface without implementation is now a warning
• KT-11111 Overriding by inline function is now a warning, overriding by a function with reified type parameter is an error
• KT-12337 Reference to a property with invisible setter now has KProperty type (as opposed to KMutableProperty)

Issues fixed

• KT-4285 No warning for a non-tail call when the method inherits default arguments from superclass
• KT-4764 Spurious "Variable must be initialized" in try/catch/finally
• KT-6665 Unresolved reference leads to marking subsequent code unreachable
• KT-11750 Exceptions when creating various entries with the name "name" in enums
• KT-11998 Smart cast to not-null is not performed on a boolean property in if condition
• KT-10648 Exhaustiveness check does not work when sealed class hierarchy contains intermediate sealed classes
• KT-10717 Type inference for lambda with local return
• KT-11266 Fixed "Empty intersection of types" internal compiler error for some cases
• KT-11857 Fix visibility check for dynamic members within protected method (when targeting JS)
• KT-12589 Improved "infix modifier is inapplicable" diagnostic message
• KT-11679 Erroneous call with argument causes Throwable at ResolvedCallImpl.getArgumentMapping()
• KT-12623 Fix ISE on malformed code

JVM code generation

• KT-5075 Optimize array/collection indices usage in for loop
• KT-11116 Optimize coercion to Unit, POP operations are backward-propagated

Issues fixed

• KT-11499 Compiler crashes with "Incompatible stack heights"
• KT-11943 CompilationException with extension property of KClass
• KT-12125 Wrong increment/decrement on Byte/Char/Short.MAX_VALUE/MIN_VALUE
• KT-12192 Exhaustiveness check isn't generated for when expression returning Unit
• KT-12200 Erroneously optimized away assignment to a property initialized to zero
• KT-12582 "VerifyError: Bad local variable type" caused by explicit loop variable type
• KT-12708 Bridge method not generated when data class implements interface with copy() method
• KT-12106 import static of reified companion object method throws IllegalAccessError

Performance

• Reduced number of IO operation when loading kotlin compiled classes

Сompiler options

• Allow to specify version of Kotlin language for source compatibility with older releases.
  • CLI: -language-version command line option
  • Maven: languageVersion configuration parameter, linked with kotlin.compiler.languageVersion property
  • Gradle: kotlinOptions.languageVersion property in task configuration
• Allow to specify which java runtime target version to generate bytecode for.
  • CLI: -jvm-target command line option
  • Maven: jvmTarget configuration parameter, linked with kotlin.compiler.jvmTarget property
  • Gradle: kotlinOptions.jvmTarget property in task configuration
• Allow to specify path to JDK to resolve classes from.
  • CLI: -jdk-home command line option
  • Maven: jdkHome configuration parameter, linked with kotlin.compiler.jdkHome property
  • Gradle: kotlinOptions.jdkHome property in task configuration

Standard Library

• Improve documentation (including KT-11632)
• List iteration used in collection operations is performed with an indexed loop when the list supports RandomAccess and the operation isn't inlined

IDE

Completion

New features

• Smart completion after by and in
• Improved completion in bodies of overridden members (when no type is specified)
• Improved presentation of completion items for property accessors
• Fixed keyword completion after try in assignment expression
• KT-8527 Include non-imported declarations on the first completion
• KT-12068 Special completion item for "[]" get-operator access
• KT-12080 Parameter names are now higher up in completion list

Issues fixed

• Fixed enum members being present in completion as static members
• Fixed QuickDoc not working for properties generated for java classes
• KT-9166 Code completion does not work for synthetic java properties on typing "g"
• KT-11609 No named arguments completion should be after dot
• KT-11633 Wrong indentation after completing a statement in data class
• KT-11680 Code completion of label for existing return with value inserts redundant whitespace
• KT-11784 Completion for if statement should add parentheses automatically
• KT-11890 Completion for callable references does not propose static Java members
• KT-11912 String interpolation is not converted to ${} form when accessing this.property
• KT-11957 No catch and finally keywords in completion
• KT-12103 Smart completion for nested SAM-adapter produces short unresolved name
• KT-12138 Do not show "::error" in smart completion when any function type accepting one argument is expected
• KT-12150 Smart completion suggests to compare non-nullable with null
• KT-12124 No code completion for a java property in a specific position
• KT-12299 Completion: incorrect priority of property foo over method getFoo in Kotlin-only code
• KT-12328 Qualified function name inserted when typing before if
• KT-12427 Completion doesn't work for "@receiver:" annotation target
• KT-12447 Don't use CompletionProgressIndicator in Kotlin plugin
• KT-12669 Completion should show variant with () when there is default lambda
• KT-12369 Pressing dot after class name should not cause insertion of constructor call

Spring support

New features

• KT-11692 Support Spring model diagrams for Kotlin classes
• KT-12079 Support "Autowired members defined in invalid Spring bean" inspection on Kotlin declarations
• KT-12092 Implement bean references in @Qualifier annotations
• KT-12135 Automatically configure components based on basePackageClasses attribute of @ComponentScan
• KT-12136 Implement package references inside of string literals
• KT-12139 Support Spring configurations linked via @Import annotation
• KT-12278 Implement Spring @Autowired inspection
• KT-12465 Implement Spring @ComponentScan inspection

Issues fixed

• KT-12091 Fixed unstable behavior of Spring line markers
• KT-12096 Fixed rename of custom-named beans specified with Kotlin annotation
• KT-12117 Group Kotlin classes from the same file in the Choose Bean dialog
• KT-12120 Show autowiring candidates line markers for @Autowired-annotated constructors and constructor parameters
• KT-12122 Fixed line marker popup on functions with @Qualifier-annotated parameters
• KT-12143 Fixed "Spring Facet Code Configuration (Kotlin)" inspection description
• KT-12147 Fixed exception on analyzing object declaration with @Component annotation
• KT-12148 Warn about object declarations annotated with Spring @Configuration/@Component/etc.
• KT-12363 Fixed "Autowired members defined in invalid Spring bean (Kotlin)" inspection description
• KT-12366 Fixed exception on analyzing class declaration upon annotation typing
• KT-12384 Fixed bean references in factory method calls

Intention actions, inspections and quickfixes

New features

• New icon for "New -> Kotlin Activity" action
• "Change visibility on exposure" and "Make visible" fixes now support all possible visibilities
• KT-8477 New inspection "Can be primary constructor property" with quick-fix
• KT-5010 "Redundant semicolon" inspection with quickfix
• KT-9757 Quickfix for "Unused lambda expression" warning
• KT-10844 Quick fix to add crossinline modifier
• KT-11090 "Add variance modifiers to type parameters" inspection
• KT-11255 Move Element Left/Right actions
• KT-11450 "Modality is redundant" inspection
• KT-11523 "Add @JvmOverloads annotation" intention
• KT-11768 "Introduce local variable" intention
• KT-11806 Quick-fix to increase visibility for invisible member
• KT-11807 Use function body template when generating overriding functions with default body
• KT-11864 Suggest "Create function/secondary constructor" quick fix on argument type mismatch
• KT-11876 Quickfix for "Extension function type is not allowed as supertype" error
• KT-11920 "Increase visibility" and "Decrease visibility" quickfixes for exposed visibility errors
• KT-12089 Quickfix "Make primary constructor parameter a property"
• KT-12121 "Add toString() call" quickfix
• KT-11104 New quickfixes for nullability problems: "Surround with null check" and "Wrap with safe let call"
• KT-12310 New inspection "Member has platform type" with quickfix

Issues fixed

• Fixed "Convert property initializer getter" intention being available inside lambda initializer
• Improved message for "Can be declared as val" inspection
• KT-3797 Quickfix to make a function abstract should not be offered for object members
• KT-11866 Suggest "Create secondary constructor" when constructors exist but are not applicable
• KT-11482 Fixed exception in "Move to companion object" intention
• KT-11483 Pass implicit receiver as argument when moving member function to companion object
• KT-11512 Allow choosing any source root in "Move file to directory" intention
• KT-10950 Keep original file package name when moving top-level declarations to separate file (provided it's not ambiguous)
• KT-10174 Optimize imports after applying "Move declaration to separate file" intention
• KT-11764 Intention "Replace with a forEach function call should replace continue with return@forEach
• KT-11724 False suggestion to replace with compound assignment
• KT-11805 Invert if-condition intention breaks code in case of end of line comment
• KT-11811 "Make protected" intention for a val declared in parameters of constructor
• KT-11710 "Replace if with elvis operator": incorrect code generated for if expression
• KT-11849 Replace explicit parameter with it changes the meaning of code because of the shadowing
• KT-11870 "Replace with Elvis" refactoring doesn't change the variable type from T? to T
• KT-12069 Specify language for all Kotlin code inspections
• KT-11366 "object Companion is never used" warning in intellij
• KT-11275 Inconsistent behaviour of "move lambda argument out of parentheses" intention action when using lambda calls with function arguments without parentheses
• KT-11594 "Add non-null asserted (!!) call" applied to unsafe cast to nullable type causes AE at KtPsiFactory.createExpression()
• KT-11982 False "Redundant final modifier" reported
• KT-12040 "Replace when with if" produce invalid code for first entry which has comment
• KT-12204 "Use classpath of module" option in existing Kotlin run configuration may be changed when a new run configuration is created
• KT-10635 Don't mark private writeObject and readObject methods of Serializable classes as unused
• KT-11466 "Make abstract" quick fix applies to outer class of object with accidentally abstract function
• KT-11120 Constructor parameter/field reported as unused symbol even if it have used annotation
• KT-11974 Invert if-condition intention loses comments
• KT-10812 Globally unused constructors are not marked as such
• KT-11320 Don't mark @BeforeClass (JUnit4) annotated functions as unused
• KT-12267 "Change type" quick fix converts to Int for Long literal
• KT-11949 Various problems fixed with "Constructor parameter is never used as a property" inspection
• KT-11716 "Simply for using destructuring declaration" intention: incorrect behavior for data classes
• KT-12145 "Simplify for using destructuring declaration" should work even when no variables declared inside loop
• KT-11933 Entities used only by alias are marked as unused
• KT-12193 Convert to block body isn't equivalent for when expressions returning Unit
• KT-10779 Simplify for using destructing declaration: intention / inspection quick fix is available only when all variables are used
• KT-11281 Fix exception on applying "Convert to class" intention to Java interface with Kotlin inheritor(s)
• KT-12285 Fix exception on test class generation
• KT-12502 Convert to expression body should be forbidden for non-exhaustive when returning Unit
• KT-12260 ISE while replacing an operator with safe call
• KT-12649 "Convert if to when" intention incorrectly deletes code
• KT-12671 "Shot type" action: "Type is unknown" error on an invoked expression
• KT-12284 Too wide applicability range for "Add braces to else" intention
• KT-11975 "Invert if-condition" intention does not simplify is expression
• KT-12437 "Replace explicit parameter" intention is suggested for parameter of inner lambda in presence of it from outer lambda
• KT-12290 Navigate to the generated declaration when using "Implement abstract member" intention
• KT-12376 Don't show "Package directive doesn't match file location" in injected code
• KT-12777 Fix exception in "Create class" quickfix applied to unresolved references in type arguments

Language injection

• Apply injection for the literals in property initializer through property usages
• Enable injection from Java or Kotlin function declaration by annotating parameter with @Language annotation
• KT-2428 Support basic use-cases of language injection for expressions marked with @Language annotation
• KT-11574 Support predefined Java positions for language injection
• KT-11472 Add comment or @Language annotation after "Inject language or reference" intention automatically

Refactorings

New features

• KT-6372 Add name suggestions to Rename dialog
• KT-7851 Respect naming conventions in automatic variable rename
• KT-8044, KT-9432 Support @JvmName annotation in rename refactoring
• KT-8512 Support "Rename tests" options in Rename dialog
• KT-9168 Support rename of synthetic properties
• KT-10578 Support automatic test renaming for facade files
• KT-12657 Rename implicit usages of annotation method value
• KT-12759 Suggest renaming both property accessors with matching @JvmName when renaming one of them from Java

Issues fixed

• KT-4791 Rename overridden property and all its accessors on attempt to rename overriding accessor in Java code
• KT-6363 Do not rename ambiguous references in import directives
• KT-6663 Fixed rename of ambiguous import reference to class/function when some referenced declarations are not changed
• KT-8510 Preserve "Search in comments and strings" and "Search for text occurrences" settings in Rename dialog
• KT-8541, KT-8786 Do now show 'Rename overloads' options if target function has no overloads
• KT-8544 Show more detailed description in Rename dialog
• KT-8562 Show conflicts dialog on attempt of redeclaration
• KT-8611 Qualify class references to resolve rename conflicts when possible
• KT-8732 Implement Rename conflict analysis and fixes for properties/parameters
• KT-8860 Allow renaming class by constructor delegation call referencing primary constructor
• KT-8892 Suggest renaming base declarations on overriding members in object literals
• KT-9156 Quote non-identifier names in Kotlin references
• KT-9157 Fixed in-place rename of Kotlin expression referring Java declaration
• KT-9241 Do not replace Java references to synthetic component functions when renaming constructor parameter
• KT-9435 Process property accessor usages (Java) in comments and string literals
• KT-9444 Rename dialog: Allow typing any identifier without backquotes
• KT-9446 Copy default parameter values to overriding function which is renamed while its base function is not
• KT-9649 Constraint search scope of parameter declared in a private member
• KT-10033 Qualify references to members of enum companions in case of conflict with enum entries
• KT-10713 Skip read-only declarations when renaming parameters
• KT-10687 Qualify property references to avoid shadowing by parameters
• KT-11903 Update references to facade class when renaming file via matching top-level class
• KT-12411 Fix package name quotation in Move refactoring
• KT-12543 Qualify property references with this to avoid renaming conflicts
• KT-12732 Copy default parameter values to overriding function which is renamed by Java reference while its base function is unchanged
• KT-12747 Fix exception on file copy

Java to Kotlin converter

New features

• KT-4727 Convert Java code copied from browser or other sources

Issues fixed

• KT-11952 Assertion failed in PropertyDetectionCache.get on conversion of access to Java constant of anonymous type
• KT-12046 Recursive property setter
• KT-12039 Static imports converted missing ".Companion"
• KT-12054 Wrong conversion of instanceof checks with raw types
• KT-12045 Convert Object() to Any()

Android Lint

Issues fixed

• KT-12015 False positive for Bundle.getInt()
• KT-12023 "minSdk" lint check doesn't work for as/is
• KT-12674 "Calling new methods on older versions" errors for inlined constants
• KT-12681 Running lint from main menu: diagnostics reported for java source files only
• KT-12173 False positive for "Toast created but not shown" inside SAM adapter
• KT-12895 NoSuchMethodError thrown when saving a Kotlin file

KDoc

New features

• Support for @receiver tag

Issues fixed

• Rendering of _ and * standalone characters
• Rendering of code blocks
• KT-9933 Indentation in code fragments is not preserved
• KT-10998 Spaces around links are missing in return block
• KT-11791 Markdown links rendering
• KT-12001 Allow use of @param to document type parameter

Maven support

New features

• Inspections that check that kotlin IDEA plugin, kotlin Maven plugin and kotlin stdlib are of the same version
• KT-11643 Inspections and intentions to fix erroneously configured Maven pom file
• KT-11701 "Add Maven Dependency quick fix" in Kotlin source files
• KT-11743 Intention to replace kotlin-test with kotlin-test-junit

Issues fixed

• KT-9492 Configuring multiple Maven Modules
• KT-11642 Kotlin Maven configurator tags order
• KT-11436 "Choose Configurator" control opens dialogs with inconsistent modality (linux)
• KT-11731 Default maven integration doesn't include documentation
• KT-12568 Execution configuration: file path completion works only in some sub-elements of
• KT-12558 Configure Kotlin in Project: "Undo" should revert changes in all poms
• KT-12512 "Different IDE and Maven plugin version" inspection is being invoked for non-tracked pom.xml files

Debugger

New features

• KT-11438 Support navigation from stacktrace to inline function call site

Issues fixed

• Do not step into inline lambda argument during step over inside inline function body
• Fix step over for inline argument with non-local return
• KT-12067 Deadlock in Kotlin debugger is fixed
• KT-12232 No code completion in Evaluate Expression and Throwable at CodeCompletionHandlerBase.invokeCompletion()
• KT-12137 Evaluate expression: code completion/intention actions allows to use symbols from modules that are not referenced
• KT-12206 NoSuchFieldError in Evaluate Expression on a property of a derived class
• KT-12678 NoSuchFieldError in Evaluate Expression on accessing delegated property defined in other module
• KT-12773 Fix debugging for Kotlin JS projects

Formatter

Issues fixed

• KT-12035 Spaces around as
• KT-12018 Spaces between function name and arguments in infix calls
• KT-11961 Spaces before angle bracket in method definition
• KT-12175 Don't enforce empty line between secondary constructors without body
• KT-12548 Spaces around is keyword
• KT-12446 Spaces before class type parameters
• KT-12634 Spaces between method name and parenthesis in method call
• KT-10680 Spaces around in keyword
• KT-12791 Spaces between curly brace and expression inside string template
• KT-12781 Spaces between annotation and expression
• KT-12689 Spaces around semicolons
• KT-12714 Spaces around parentheses in enum elements

Other

New features

• Added "Decompile" button to Kotlin bytecode toolwindow
• Added Kotlin "Tips of the day"
• Added "Kotlin 1.1 EAP" to "Configure Kotlin Plugin updates"
• KT-2919 Constructor calls are no longer highlighted as classes
• KT-6540 Infix function calls are now highlighted as regular function calls
• KT-9410 Annotations in Kotlin are now highlighted with the same color as in Java by default
• KT-11465 Type parameters in Kotlin are now highlighted with the same color as in Java by default
• KT-11657 Allow viewing decompiled Java source code for Kotlin-compiled classes
• KT-11704 Support file path references inside of Kotlin string literals
• KT-12076 Kotlin Plugin update check: always display installed version number
• KT-11814 New icon for kotlin annotation classes
• KT-12735 Convert JavaDoc to KDoc when overriding Java class member in Kotlin

Issues fixed

• KT-5960 Can't find usages for Java methods used from Kotlin by call convention
• KT-8362 "New Kotlin file": Keywords should be escaped in package name
• KT-8682 Respect "Copy JavaDoc" option in the "Override/Implement Members..." dialog
• KT-8817 Fixed rename of Java getters/setters through synthetic property references in Kotlin
• KT-9399 Find Usages omits Kotlin annotation parameter usage in Java source
• KT-9797 "Kotlin Bytecode" toolwindow breaks after closing
• KT-11145 Use progress indicator when searching usages in Introduce Parameter
• KT-11155 Allow running multiple Kotlin classes as well as running mixtures of Kotlin and Java classes
• KT-11495 Show recursion line markers for extension function calls with different receiver
• KT-11659 Generate abstract overrides for Any members inside of Kotlin interfaces
• KT-12070 Add empty line in error message of Maven and Gradle configuration
• KT-11908 Allow properties with custom setters to be used in generated equals/hashCode/toString
• KT-11617 Fixed title of Introduce Parameter declaration chooser
• KT-11817 Fixed rename of Kotlin enum constants through Java references
• KT-11816 Fixed usages search for Safe Delete on simple enum entries
• KT-11282 Delete interface reference from super-type list when applying Safe Delete to Java interface
• KT-11967 Fix Find Usages/Rename for parameter references in XML files
• KT-10770 "Optimize imports" will not keep import if a type is only referenced by kdoc
• KT-11955 Copy/Paste inserts fully qualified name when copying function with overloads
• KT-12436 "Replace explicit parameter with it": java.lang.Exception at BaseRefactoringProcessor.run()
• KT-12440 Removing unused parameter results in Exception "Refactorings should not be started inside write action"
• KT-12006 getLanguageLevel is slow for Kotlin light classes
• KT-12026 "Constant expression required" in Java for const Kotlin values
• KT-12259 ClassCastException in light classes while trying to create generic property
• KT-12289 Remove unnecessary ? from serr live template
• KT-12110 Map help button of the Compiler - Kotlin page
• KT-12075 Kotlin Plugin update check: make dumbaware
• KT-10255 call BuildManager.clearState(project) in apply() method of Kotlin Compiler Settings configurable
• KT-11841 New Project / Module wizard, Gradle: pure Kotlin module is created without repositories call in build.gradle
• KT-11095 Java cannot infer generic return type of Kotlin function (with java 8 language level)
• KT-12090 Intellij/Kotlin plugin does not handle generic return type of static method defined in Kotlin, called from Java
• KT-12206 Fix NoSuchFieldError on accessing base property without backing field in evaluate expression
• KT-12516 File Structure: Kotlin annotation classes have Java annotation icons
• KT-11328 "New Kotlin class": generates packages when fully qualified name is specified
• KT-11778 Exception in Lombok plugin: Rewrite at slice FUNCTION
• KT-11708 "Go to declaration" doesn't work on a call to function with SAM conversion on a derived type
• KT-12381 Prefer not-nullable return type when overriding Java method without nullability annotation
• KT-12647 Performance improvement for test-related line markers
• KT-12526 Kotlin intentions increase PSI modification counts from isAvailable, even in daemon threads

Reflection

Issues fixed

• KT-11531 Optimize "KCallable.name"
• KT-10771 Reflection on Function objects does not support lambdas with generic return type
• KT-11824 Reflection inconsistency between member property and accessor

JS

• Improve performance of maps and sets

Issues fixed

• KT-6942 Generate structural equality check (i.e. Any.equals) instead of referential check (===) value equality patterns in when
• KT-7228 Wrong AbstractList signature
• KT-8299 Wrong access to private member in autogenerated code in data class
• KT-11346 Reified functions like filterIsInstance are now available in JS Standard Library
• KT-12305 Incorrect translation of vararg in @native functions
• KT-12254 JsEmptyExpression in initializer when compiling code like val x = throw Exception()
• KT-11960 Wrong code generated when a method of a local class calls constructor of the class
• KT-10931 Incorrect inlining of library method with optional parameters
• KT-12417 Wrong check cast generated for KMutableProperty

Tools

New features

• KT-11839 Maven goal to execute kotlin script

Issues fixed

• KAPT: fix error when using enum constructors with parameters
• Various problems with gradle 2.2 fixed: KT-12478, KT-12406, KT-12478
• KT-12595 JPS: Fixed com.intellij.util.io.MappingFailedException: Cannot map buffer
• KT-11166 Gradle: Unable to access internal classes from test code within the same module
• KT-12352 KAPT: Fix "Classpath entry points to a non-existent location" warnings
• KT-12074 Building Kotlin maven projects using a parent pom will silently fail
• KT-11770 Warning "RuntimeException: Could not find installation home path" when using Gradle Incremental Compilation
• KT-10969 Android extensions: NullPointerException when finding view in Fragment
• KT-11885 Gradle/Android: Unresolved reference "kotlinx" when classpath dependency is defined in root build.gradle
• KT-12786 Deprecation warning with Gradle 2.14

1.0.2-1

• KT-12159, KT-12406, KT-12431, KT-12478 Support Android Studio 2.2
• KT-11770 Fix warning "RuntimeException: Could not find installation home path" when using incremental compilation in Gradle
• KT-12436, KT-12440 Fix multiple exceptions during refactorings in IDEA 2016.2 EAP
• KT-12015, KT-12047, KT-12387 Fix multiple issues in Kotlin Lint checks

1.0.2

Compiler

Analysis & diagnostics

• KT-7437, KT-7971, KT-7051, KT-6125, KT-6186, KT-11649 Implement missing checks for protected visibility
• KT-11666 Report "Implicit nothing return type" on non-override member functions
• KT-4328, KT-11497, KT-10493, KT-10820, KT-11368 Report error if some classes were not found due to missing or conflicting dependencies
• KT-11280 Do not perform smart casts for values with custom equals compared with ==
• KT-3856 Fix wrong "inner class inaccessible" diagnostic for extension to outer class
• KT-3896, KT-3883, KT-4986 do...while (true) is now considered an infinite loop
• KT-10445 Prohibit initialization of captured val in lambda or in local function
• KT-10042 Correctly handle local classes and anonymous objects in control flow analysis
• KT-11043 Prohibit complex expressions with class literals in annotation arguments
• KT-10992, KT-11007 Fix multiple problems related to smart casts
• KT-11490 Prohibit nested intersection types in return position
• KT-11411 Report "illegal noinline/crossinline" on parameter of subtype of function type
• KT-3083 Report "conflicting overloads" for functions with parameter of type parameter type
• KT-7265 Parse anonymous functions in blocks as expressions
• KT-8246 Handle break/continue for outer loop correctly in case of try/finally in between
• KT-11300 Report error on increment or augmented assignment when get is an operator but set is not
• Report warning about unused anonymous functions
• Improve callable reference type in some ambiguous cases
• Improve multiple diagnostic messages: KT-10761, KT-9760, KT-10949, KT-9887, KT-9550, KT-11239, KT-11819
• Fix several compiler bugs leading to exceptions: KT-9820, KT-11597, KT-10983, KT-10972, KT-11287, KT-11492, KT-11765, KT-11869

JVM code generation

• KT-8269, KT-9246, KT-10143 Fix visibility of protected classes in bytecode
• KT-11363 Fix potential binary compatibility breakage on using when over enums in inline functions
• KT-11762 Fix VerifyError caused by explicit loop variable type
• KT-11645 Fix NoSuchFieldError on private const property in multi-file class
• KT-9670 Optimize Class <-> KClass wrapping/unwrapping when getting values from annotation
• KT-6842 Optimize unnecessary boxing and interface calls on iterating over ranges
• KT-11025 Don't inline const val properties in non-annotation contexts
• KT-5429 Write nullability annotations on extension receiver parameters
• KT-11347 Preserve source file and line number of call site when inlining certain standard library functions
• KT-11677 Write correct generic signatures for local classes in inlined lambdas
• KT-12127 Do not write unnecessary generic signature for property delegate backing field
• Fix multiple issues leading to exceptions or bad bytecode being generated: KT-11034, KT-11519, KT-11117, KT-11479

Java interoperability

• KT-3068 Load contravariantly projected collections in Java (List<? super T>) as mutable collections in Kotlin (MutableList<in T>)
• KT-11322 Do not lose type nullability information in SAM constructors
• KT-11721 Fix wrong "Typechecker has run into recursive problem" error on calling Kotlin get function as synthetic Java property
• KT-10691 Fix wrong "Inherited platform declarations clash" error on inheritance from generic Java class with overloaded methods

Command line compiler

• KT-9546 Flush stdout and stderr before shutdown when executing scripts
• KT-10605 Disable colored output on certain platforms to prevent crashes
• Report warning instead of error on unknown "-X" flags
• Remove the compiler option "Xmultifile-facades-open"

Compiler daemon

• Reduce read disk activity
• Fix compiler daemon JAR cache clearing on IDEA Ultimate

Standard library

• KT-11410 Reduce method count of the standard library by ~2k
• KT-9990 Optimize snapshot operations to return special collection implementations when result is empty or has single element
• KT-10794 EmptyList now implements RandomAccess
• KT-10821 Create at most one wrapper sequence for adjacent drop/take operations on sequences
• KT-11301 Make Map.plus accept Map out-projected by key type as either operand (receiver or parameter)
• KT-11485 Remove implementations of some internal intrinsic functions
• KT-11648 Add deprecated extension MutableList.remove to redirect to valid function removeAt
• KT-11348 kotlin.test: Make inline methods todo and currentStackTrace @InlineOnly not to lose stack trace
• KT-11745 Rename parameters of String.subSequence to match those of CharSequence.subSequence
• KT-10953 Clarify parameter order of lambda function parameter of *Indexed functions
• KT-10198 Improve docs for binarySearch functions
• KT-9786 Improve docs for trimIndent/trimMargin

Reflection

• KT-9952 Improve toString() for lambdas and function expressions when kotlin-reflect.jar is available
• KT-11433 Fix multiple resource leaks by closing InputStream instances
• KT-8131 Fix exception from calling KProperty.javaField on a subclass
• KT-10690 Support javaMethod and kotlinFunction for top level functions in a different file
• KT-11447 Support reflection calls to multifile class members
• KT-10892 Load annotations of const properties from multifile classes
• KT-11258 Don't crash on requesting members of Java collection classes
• KT-11502 Clarify KClass equality

JS

• KT-4124 Support nested classes
• KT-11030 Support local classes
• KT-7819 Support non-local returns in local lambdas
• KT-6912 Safe calls (x?.let { it }) are now inlined
• KT-2670 Support unsafe casts (as)
• KT-7016, KT-8012 Fix is-checks for reified type parameters
• KT-7038 Avoid unwanted side effects on is-checks for nullable types
• KT-10614 Copy array on vararg call with spread operator
• KT-10785 Correctly translate property names and receiver instances in assignment operations
• KT-11611 Fix translation of default value of secondary constructor's functional parameter
• KT-11100 Fix generation of invoke on objects and companion objects
• KT-11823 Fix capturing of outer class' this in inner's lambdas
• KT-11996 Fix translation of a call to a private member of an outer class from an inner class which is a subtype of the outer class
• KT-10667 Support inheritance from nested built-in types such as Map.Entry
• KT-7480 Remove declarations of LinkedList, SortedSet, TreeSet, Enumeration
• KT-3064 Implement CharSequence.repeat

IDE

New features:

• Spring Support
  • KT-11098 Inspection on final classes/functions annotated with Spring @Configuration/@Component/@Bean
  • KT-11405 Navigation and Find Usages for Spring beans referenced in annotation arguments and BeanFactory method calls
  • KT-3741 Show Spring-specific line markers on Kotlin classes
  • KT-11406 Support Spring EL injections inside of Kotlin string literals
  • KT-11604 Support "Configure Spring facet" inspection on Kotlin classes
  • KT-11407 Implement "Generate Spring Dependency..." actions
  • KT-11408 Implement "Generate @Autowired Dependency..." action
  • KT-11652 Rename bean attributes mentioned in Spring XML config together with corresponding Kotlin declarations
• Enable precise incremental compilation by default in non-Maven/Gradle projects
• KT-11612 Highlight named arguments
• KT-7715 Highlight vars that can be replaced by vals
• KT-5208 Intention action to convert string to raw string and back
• KT-11078 Quick fix to remove .java when KClass is expected
• KT-1494 Inspection to highlight public members with no documentation
• KT-8473 Intention action to implement interface or abstract class
• KT-10299 Inspection to warn on array properties in data classes
• KT-6674 Inspection to warn on protected symbols in effectively final classes
• KT-11576 Quick fix to suppress "Unused symbol" warning based on annotations on the declaration
• KT-10063 Quick fix for adding arrayOf wrapper for annotation parameters
• KT-10476 Quick fix for converting primitive types
• KT-10859 Quick fix to make var with private setter final
• KT-9498 Quick fix to specify property type
• KT-10509 Quick fix to simplify condition with senseless comparison
• KT-11404 Quick fix to let type implement missing interface
• KT-6785, KT-10013, KT-9996, KT-11675 Support Smart Enter for trailing lambda argument, try/catch/finally, property setter, init block
• Add kotlinClassName() and kotlinFunctionName() macros for use in live templates
• Auto-configure EAP-repository during Kotlin Maven and Gradle project set up

Issues fixed:

• KT-11678, KT-4768 Support navigation to Kotlin libraries from Java sources
• KT-9401 Support Change Signature quick fix for Java -> Kotlin case
• KT-8592 Fix "Choose sources" for Kotlin files
• KT-11256 Fix Navigate to declaration for Java constructor with @NotNull parameter
• KT-11018 Fix vars shown in Ctrl + Mouse Hover as vals
• KT-5105, KT-11024 Improve incompatible ABI versions editor strap, show the hint on how to resolve the problem
• KT-11638 Fixed hashCode() implementation in "Generate equals/hashCode" action
• KT-10971 Pull Members Up: Always insert spaces between keywords
• KT-11476, KT-4175, KT-10965, KT-11076 Formatter: fix multiple issues regarding space handling
• KT-9025 Improve "Create Kotlin Java runtime library" dialog usability
• KT-11481 Fix "Add import" intention not being available for is branches in when
• KT-10619 Fix completion after package name in annotation
• KT-10621 Do not show non-top level packages after @ in completion
• KT-11295 "Convert string to template" intention: fix exception on certain code
• KT-10750, KT-11424 "Convert if to when" intention now detects effectively else branches in subsequent code and performs more accurate comment handling
• Configure Kotlin: show only changed files in the notification "Kotlin not configured", restore all changed files in undo action
• KT-11556 Do not show "Kotlin not configured" for Kotlin JS projects
• KT-11593 Fix "Configure Kotlin" action for Gradle projects in IDEA 2016
• KT-11077 Use new built-in definition file format (.kotlin_builtins files)
• KT-5728 Remove closing curly brace in a string template when opening one is deleted
• KT-10883 "Explicit get or set call" quick fix: do not move caret too far away
• KT-5717 "Replace when with if": do not lose comments
• KT-10797 "Replace with operator" intention is not available anymore for non-operator functions
• KT-11529 Highlighting range for unresolved annotation name does not include @ now
• KT-11178 Don't show "Change type arguments" fix when there's nothing to change
• KT-11789 Don't interpret annotations inside Markdown code blocks as KDoc tags
• KT-11702 Fixed resolution of Kotlin beans with custom name
• KT-11689 Fixed exception on attempt to navigate to Kotlin file from Spring notification balloon
• KT-11725 Fixed renaming of injected SpEL references
• KT-11720 Fixed renaming of Kotlin beans through SpEL references
• KT-11719 Fixed renaming of Kotlin parameters references in XML files
• KT-11736 Fixed searching of Java usages for @JvmStatic properties and @JvmStatic @JvmOverloads functions
• KT-11862 Fixed bogus warnings about unresolved types in the Change Signature dialog
• Fix several issues leading to exceptions: KT-11579, KT-11580, KT-11777, KT-11868, KT-11845, KT-11486
• Fixed NoSuchFieldException in Kotlin module settings on IDEA Ultimate

Debugger

• KT-11705 "Smart step into" no longer skips methods from subclasses
• Debugger can now distinguish nested inline arguments
• KT-11326 Support private classes in Evaluate Expression
• KT-11455 Fix Evaluate Expression behavior for files with errors in sources
• KT-10670 Fix Evaluate Expression behavior for inline functions with default parameters
• KT-11380 Evaluate Expression now handles smart casts correctly
• KT-10148 Do not suggest methods from outer context in "Smart step into"
• Fix Evaluate Expression for expression created for array element
• Complete private members from libraries in Evaluate Expression
• KT-11578 Evaluate Expression: do not highlight completion variants from nullable receiver with grey
• KT-6805 Convert Java expression to Kotlin when opening Evaluate Expression from Variables view
• KT-11927 Fix "ambiguous import" error when invoking Evaluate Expression from Variables view for some field
• KT-11831 Fix Evaluate Expression for values of raw types
• Show error message when debug info for some local variable is corrupted
• Avoid 1s delay in completion in debugger fields if session is not stopped on a breakpoint
• Avoid cast to runtime type unavailable in current scope
• Fix text with line breaks in popup with line breakpoint variants
• Fix breakpoints inside inline functions in libraries sources
• Allow breakpoints at catch clause declaration
• KT-11848 Fix breakpoints inside generic crossinline lambda argument body
• KT-11932 Fix Step Over for while loop condition

Java to Kotlin converter

• Protected members used outside of inheritors are converted as public
• Support conversion for annotation constructor calls
• Place comments from the middle of the call to the end
• Drop line breaks between operator arguments (except +, -, && and ||)
• Add non-null assertions on call site for non-null parameters
• Specify type for variables with anonymous type if they have write accesses
• KT-11587 Fix conversion of static field accesses from other Java class
• KT-6800 Quote $ symbols in converted strings
• KT-11126 Convert annotations in annotations parameters correctly
• KT-11600 Do not produce unresolved toArray calls for Java Collection#toArray(T[])
• KT-11544 Fix conversion of uninitialized non-final field
• KT-10604 Fix conversion of scratch files
• KT-11543 Do not produce unnecessary casts of non-nullable expression to nullable type
• KT-11160 Fix IDE freeze

Android

• KT-7729 Add Android Lint checks for Kotlin (from Android Studio 1.5)
• KT-11487 Fixed sequential build with kapt and stubs enabled when Kotlin source file was modified and no Java source files were modified
• KT-11264 Action to create new activity in Kotlin
• KT-11201 Do not ignore items with similar names in kapt
• KT-11944 Rename Android Extensions imports when the layout file is renamed/deleted/added
• KT-10321 Do not upcast ViewStub to View
• KT-10841 Support @android:id/* IDs in Android Extensions

Maven

• KT-2917, KT-11261 Maven archetype for new Kotlin projects

Gradle

• KT-8487 Experimental support for incremental compilation with project property kotlin.incremental
• KT-11350 Fixed a bug causing Java rebuild when both Java and Kotlin are up-to-date
• KT-10507 Fix IllegalArgumentException "Missing extension point" on parallel builds
• KT-10932 Prevent compile tasks from running when nothing changes
• KT-11993 Fix NoSuchMethodError on access to internal members in production from tests (IDEA 2016+)

1.0.1-2

Compiler

• KT-11584, KT-11514 Correct comparison of Long! / Double! with integer constant
• KT-11590 SAM adapter for inline function corrected

1.0.1-1

Compiler

• KT-11468 More correct use-site / declaration-site variance combination handling
• KT-11478 "Couldn't inline method call" internal compiler error fixed

1.0.1

Compiler

Analysis & diagnostics issues fixed:

• KT-2277 Local function declarations are now checked for overload conflicts
• KT-3602 Special diagnostic is reported now on nullable ‘for’ range
• KT-10775 No compilation exception for empty when
• KT-10952 False deprecation warnings removed
• KT-10934 Type inference improved for whens
• KT-10902 Redeclaration is reported for top-level property vs classifier conflict
• KT-9985 Correct handling of safe call arguments in generic functions
• KT-10856 Diagnostic about projected out member is reported correctly on calls with smart cast receiver
• KT-5190 Calls of Java 8 Stream.collect
• KT-11109 Warning is reported on Strictfp annotation on a class because it's not supported yet
• KT-10686 Support generic constructors defined in Java
• KT-6958 Fixed resolution for overloaded functions with extension lambdas
• KT-10765 Correct handling of overload conflict between constructor and function in JPS
• KT-10752 If inferred type for an expression refers to a non-accessible Java class, it's a compiler error to prevent IAE in runtime
• KT-7415 Approximation of captured types in signatures
• KT-10913, KT-10186, KT-5198 False “unreachable code” fixed for various situations
• Minor: KT-3680, KT-9702, KT-8776, KT-6745, KT-10919, KT-9548

JVM code generation issues fixed:

• KT-11153 NoClassDefFoundError is fixed on primitive iterators during boxing optimization
• KT-7319 Correct parameter names for @JvmOverloads-generated methods
• KT-10425 Non-const values of member properties are not inlined now
• KT-11163 Correct calls of custom compareTo on primitives
• KT-11081 Reified type parameters are correctly stored in anonymous objects
• KT-11121 Generic properties generation is fixed for interfaces
• KT-11285, KT-10958 Special bridge generation refined
• KT-10313, KT-11190, KT-11192, KT-11130 Diagnostics and bytecode fixed for various operations with Long
• KT-11203, KT-11191, KT-11206, KT-8505, KT-11203 Handling of increment / decrement for collection elements with user-defined get / set fixed
• KT-9739 Backticked names with spaces are generated correctly

JS translator issues fixed:

• KT-7683, KT-11027 correct handling of in / !in inside when expressions

Standard library

• KT-10579 Improved performance of sum() and average() for arrays
• KT-10821 Improved performance of drop() / take() for sequences

Reflection

• KT-10840 Fix annotations on Java elements in reflection

IDE

New features:

• Compatibility with IDEA 2016
• Kotlin Education Plugin (for IDEA 2016)
• KT-9752 More usable file chooser for "Move declaration to another file"
• KT-9697 Move method to companion object and back
• KT-7443 Inspection + intention to replace assert (x != null) with "!!" or elvis

General issues fixed:

• KT-11277 Correct moving of Java classes from project view
• KT-11256 Navigate Declaration fixed for Java classes with @NotNull parameter in constructor
• KT-10553 A warning provided when Refactor / Move result is not compilable due to visibility problems
• KT-11039 Parameter names are now not missing in parameter info and completion for compiled java code used from kotlin
• KT-10204 Highlight usages in file is working now for function parameter
• KT-10954 Introduce Parameter (Ctrl+Alt+P) fixed when default value is a simple name reference
• KT-10776 Intentions: "Convert to lambda expression" works now for empty function body
• KT-10815 Generate equals() and hashCode() is no more suggested for interfaces
• KT-10818 "Initialize with constructor parameter" fixed
• KT-8876 "Convert member to extension" now removes modality modifiers (open / final)
• KT-10800 Create enum entry now adds comma after a new entry
• KT-10552 Pull Members Up now takes visibility conflicts into account
• KT-10978 Partially fixed, completion for JOOQ became ~ 10 times faster
• KT-10940 Reference search optimized for convention functions
• KT-9026 Editor no more locks up during scala file viewing
• KT-11142, KT-11276 Darkula scheme appearance corrected for Kotlin
• Minor: KT-10778, KT-10763, KT-10908, KT-10345, KT-10696, KT-11041, KT-9434, KT-8744, KT-9738, KT-10912

Configuration issues fixed:

• KT-11213 Kotlin plugin version corrected in build.gradle
• KT-10918 "Update Kotlin runtime" action does not try to update the runtime coming in from Gradle
• KT-11072 Libraries in maven, gradle and ide systems are never more detected as runtime libraries
• KT-10489 Configuration messages are aggregated into one notification
• KT-10831 Configure Kotlin in Project: "All modules containing Kotlin files" does not list modules not containing Kotlin files
• KT-10366 Gradle import: no fake "Configure Kotlin" notification on project creating

Debugger issues fixed:

• KT-10827 Fixed debugger stepping for inline calls
• KT-10780 Breakpoints in a lazy property work correctly
• KT-10634 Watches can now use private overloaded functions
• KT-10611 Line breakpoints now can be created inside lambda in init block
• KT-10673 Breakpoints inside lambda are no more ignored in presence of crossinline function parameter
• KT-11318 Stepping inside for each is optimized
• KT-3873 Editing code while standing on breakpoint is optimized
• KT-7261, KT-7266, KT-10672 Evaluate expression applicability corrected

Tools

• KT-7943, KT-10127 Overhead removed in Kotlin Gradle Plugin
• KT-11351 Fixed NoSuchMethodError with Gradle 2.12