Kotlin v2.2.0-RC released!

NewsBot · 16 May 2025 10:23

Kotlin v2.2.0-RC has been released.

Changelog

Compiler

Fixes

KT-77259 Confusing message for ANNOTATION_WILL_BE_APPLIED_ALSO_TO_PROPERTY_OR_FIELD

KT-77219 “@Composable annotation is not applicable” on vararg @Composable () → Unit in Kotlin 2.2.0

KT-77397 Report UNSUPPORTED_CONTEXTUAL_DECLARATION_CALL when calling declaration with contextual function type in signature

KT-74470 NSME on calling in runtime internal constructor of value class with default arg from tests

KT-77137 K2: Controversial behavior allows resolving annotation arguments on a companion inside it

KT-77150 Native: compilation fails with an assertion error

KT-76357 K2: a nested class annotation observes member declarations of the outer class

KT-77283 Binary compatibility of FirDeclarationChecker

KT-75457 Native: cache machinery uses stdlib cache with default runtime options even if custom runtime options are supplied when partial linkage is disabled

KT-76898 K2: ClassCastException when data class shadows supertype’s componentX method with wrong type

KT-77078 K2: anonymous object is wrongly allowed to implement interfaces by unsafe Delegation

KT-77001 Leave ForbidParenthesizedLhsInAssignments as a warning

Compose compiler

CMP-7873 Native build fails with "e: Compilation failed: Exception during generating code …

Link: Release Kotlin 2.2.0-RC · JetBrains/kotlin · GitHub