kotlin/compiler/testData/diagnostics/tests/dataClasses/dataClassNotOverridingCopy.kt at d4f25e104364eaef8a9e95773cfdfd39d7c33ce2 - kotlin - Gitea: Git with a cup of tea

jlengrand/kotlin

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Dmitry Petrov 4c2cfd3ea9 Synthesized 'copy' in data classes cannot override anything since 1.3

Synthesized 'copy' introduces default values for parameters, which is
prohibited for regular overrides.
Report warning in language version 1.2-, error in 1.3+.

2017-09-14 10:13:22 +03:00

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 // !LANGUAGE: +ProhibitDataClassesOverridingCopy
 interface WithCopy<T> {
     fun copy(str: T): WithCopy<T>
 }
 data class Test(val str: String, val int: Int) : WithCopy<String> {
     override fun copy(str: String) = copy(str, int)
 }