JetBrains/kotlin v2.3.0-RC

Kotlin 2.3.0-RC

on GitHub

Changelog

Backend. Wasm

• KT-82075 K/Wasm: kotlin.wasm.internal.getSimpleName crashes on iOS Safari older than 26

Compiler

• KT-82138 Debugger: Cannot evaluate JvmInline value class parameter
• KT-78413 Kotlin Debugger: value classes as context parameters have incorrect names in Variables View during debugging
• KT-80549 Call of Java method with type parameter bounds: Expected FirResolvedTypeRef with ConeKotlinType but was FirJavaTypeRef
• KT-82132 False-positive type mismatch with -language-version 2.2
• KT-81988 K2: Any?.toString() causes NPE inside lambda with Java
• KT-82022 K/N: Unexpected "Annotation @JvmInline is missing on actual declaration" warning with value classes

Compose compiler

• CMP-9167 iOS: Platform declaration clash: The following functions have the same IR signature

IR. Actualizer

• KT-77337 IrNoExpectSymbolsHandler finds expect class reference after enabling annotation traversal in IR

IR. Tree

• KT-81952 "IllegalStateException: Callable reference with vararg should not appear at this stage" for callable references to functions with generic vararg parameters

JVM. Reflection

• KT-81967 isSubtypeOf: ClassCastException: CapturedKType cannot be cast to class AbstractKType
• KT-81619 Reflection: Function supertype of a FunctionN class has flexible type in new implementation

JavaScript

• KT-82005 KJS: "TypeError: callAgent.jsonRpcCall_ij3z26_k$ is not a function" after code change in 2.3.0-Beta1/2
• KT-79514 java.lang.IllegalStateException: IrClassSymbolImpl is unbound. Signature: kotlin.js/Promise|null[0] on running jsBrowserTest

Libraries

• KT-81995 K/N: CMP: Undefined symbol _kfun:kotlin.time.Duration.kotlin.time.Duration
• KT-72111 Change Duration.parseOrNull logic to not throw exceptions internally

Tools. Compiler Plugin API

• KT-82099 Compiler plugin ordering has no effect

Tools. Gradle

• KT-79482 Report webMain / webTest usage in FUS metrics
• KT-82244 Conflicting warnings when using AGP 9.0.0-alpha with built-in Kotlin disabled
• KT-82068 Workaround iOS Simulator start failure in IT
• KT-81161 Gradle plugin api reference: compiler arguments types are not available

Tools. Gradle. Multiplatform

• KT-81601 With android.builtInKotlin=false AGP 9.0+, using kotlin-multiplatform plugin will fail with aClass Cast Exception
• KT-81980 KGP warning gives incorrect suggestion for AGP application compatibility

Tools. Gradle. Native

• KT-81510 commonizeCInterop exception with 'kotlinNativeBundleConfiguration' not found

Tools. Maven

• KT-82180 kotlin-maven-plugin: IC succeeds after dependent source deletion

Tools. Wasm

• KT-82365 K/Wasm: NodeRun tasks in Wasi depend on kotlinWasmToolingSetup