mirror of
https://github.com/jlengrand/kotlin.git
synced 2026-05-09 00:21:47 +00:00
20ea77d55d
* If `toArray` is inherited from Java, it may take an argument or
return a value of a flexible type, which looks nullable in IR;
* The returned array may also have `out` variance of the type
argument;
* `Array<T>` is not the same as `Array<Any?>` if `T` is neither `Any`
nor `in Something`, so presence of `toArray(): Array<T>` does not
mean we don't need to generate a new `toArray`.
52 lines
1.8 KiB
Kotlin
Vendored
52 lines
1.8 KiB
Kotlin
Vendored
// IGNORE_BACKEND_FIR: JVM_IR
|
|
// TARGET_BACKEND: JVM
|
|
// The old backend thinks `toArray(): Array<Int?>` is the same as `toArray(): Array<Any?>`
|
|
// IGNORE_BACKEND: JVM
|
|
// WITH_RUNTIME
|
|
// FILE: MyListWithCustomToArray.java
|
|
|
|
public abstract class MyListWithCustomToArray<E> extends java.util.AbstractList<E> {
|
|
public Object[] toArray() {
|
|
return new Object[]{null};
|
|
}
|
|
|
|
public <T> T[] toArray(T[] a) {
|
|
return a;
|
|
}
|
|
}
|
|
|
|
// FILE: a.kt
|
|
class MyList<T>(val list: List<T>): java.util.AbstractList<T>() {
|
|
override fun get(index: Int): T = list[index]
|
|
|
|
override val size: Int
|
|
get() = list.size
|
|
}
|
|
|
|
class MyListSubclass<T>(val list: List<T>): MyListWithCustomToArray<T>() {
|
|
override fun get(index: Int): T = list[index]
|
|
|
|
override val size: Int
|
|
get() = list.size
|
|
}
|
|
|
|
class MyCollection<T>(val list: List<T>) : Collection<T> by list {
|
|
fun toArray(): Array<Int?> =
|
|
arrayOfNulls<Int>(0)
|
|
}
|
|
|
|
fun box(): String {
|
|
val list1 = MyList(listOf(2, 3, 9)) as java.util.Collection<*>
|
|
list1.toArray().contentToString().let { if (it != "[2, 3, 9]") return "fail 1: $it" }
|
|
list1.toArray(arrayOfNulls<Int>(0)).contentToString().let { if (it != "[2, 3, 9]") return "fail 2: $it" }
|
|
|
|
val list2 = MyListSubclass(listOf(2, 3, 9)) as java.util.Collection<*>
|
|
list2.toArray().contentToString().let { if (it != "[null]") return "fail 3: $it" }
|
|
list2.toArray(arrayOfNulls<Int>(1)).contentToString().let { if (it != "[null]") return "fail 4: $it" }
|
|
|
|
val list3 = MyCollection(listOf(2, 3, 9)) as java.util.Collection<*>
|
|
list3.toArray().contentToString().let { if (it != "[2, 3, 9]") return "fail 5: $it" }
|
|
list3.toArray(arrayOfNulls<Int>(0)).contentToString().let { if (it != "[2, 3, 9]") return "fail 6: $it" }
|
|
return "OK"
|
|
}
|