Kotlin 2.2.0-RC2

Changelog

Backend. Wasm

• KT-77622 K/Wasm: investigate CMP crash on mobile Safari

Compiler

• KT-77220 Annotation with EXPRESSION is not allowed on lambdas in Kotlin 2.2.0

Compose compiler

• b/420729503 Avoid copying @Deprecated annotations on Compose compiler stubs
• b/417412949 Emit fake line number for skipToGroupEnd branch

IR. Tree

• KT-77508 K/JS and K/Native CompilationException Wrong number of parameters in wrapper

JVM. Reflection

• KT-77663 Reflection: java.util.ServiceConfigurationError: "module kotlin.reflect does not declare uses" when using kotlin-reflect in modular mode

Tools. CLI

• KT-77445 UNRESOLVED_REFERENCE when importing classes from kotlin-stdlib

Tools. Gradle. Multiplatform

• KT-77404 The kotlin-stdlib and annotations are missing from commonTest dependencies with 2.2.0-Beta1

Kotlin 2.2.0-RC

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 for following declaration"
• b/412584977 Fix false positive for overriding open functions from older dependencies

JavaScript

• KT-77418 KJS: cannot debug with whole-program granularity
• KT-77271 KJS / Serialization: "Cannot set property message of Error which has only a getter"
• KT-69591 KJS / d.ts: Wrong type of SerializerFactory for abstract classes
• KT-42305 KJS / IR: "Class constructor is marked as private" @JsExport produces wrong TS code for sealed classes
• KT-52563 KJS / IR: Invalid TypeScript generated for class extending base class with private constructor

Native

• KT-76992 Native: update llvm for windows targets

Native. Build Infrastructure

• KT-77349 Kotlin/Native: default cache for stdlib is unused

Tools. Gradle

• KT-76138 Compile against Gradle API 8.14
• KT-76139 Run integration tests against Gradle 8.14
• KT-76137 Compatibility with Gradle 8.14 release
• KT-76797 KGP: StdlibDependencyManagementKt.configureStdlibVersionAlignment() triggering eager configuration realization
• KT-77288 Using 'KotlinJvmOptions' is an error - Gradle sync issue when using 2.2.0-Beta2 with Android Gradle Plugin
• KT-77035 A compiler diagnostic isn't reported when its severity is set to warning with Gradle
• KT-73142 Kotlin Gradle plugin: Remove usage of Gradle's internal ExecHandleBuilder
• KT-75823 Resources bundle with XCFrameworks for iOS

Tools. Gradle. JS

• KT-77119 KJS: Gradle: Setting custom environment variables in KotlinJsTest tasks no longer works

Tools. Gradle. Native

• KT-77067 Kotlin Gradle plugin with the configuration cache passes all platform libraries to the compiler when compiling a binary for the first time

Tools. Wasm

• KT-76948 Wasm: Rename kotlinBinaryenSetup and kotlinD8Setup

Kotlin 2.1.21

Changelog

Backend. Native. Debug

• KT-75991 Xcode 16.3: Fix lldb stepping test over an inline function

Compiler

• KT-75992 Xcode 16.3: stacktraces on simulators are not symbolicated
• KT-76663 KJS: KotlinNothingValueException caused by expression return since 2.1.20
• KT-75756 Backend Internal error: Exception during IR lowering when trying to access variable from providedProperties in class within kotlin custom script
• KT-76209 CONFLICTING_UPPER_BOUNDS on Nothing bound
• KT-70352 K2: False-negative CONFLICTING_UPPER_BOUNDS on Nothing bound
• KT-74739 Native: "IllegalArgumentException: All constructors should've been lowered: FUNCTION_REFERENCE"
• KT-75483 Native: redundant unboxing generated with smart cast
• KT-71425 IR Inliner: investigate return type of an inlined block

Native

• KT-76252 Native: executable crash with generic value classes with 2.1.20

Native. C and ObjC Import

• KT-75781 Xcode 16.3: Fix cinterop tests failing with fatal error: could not build module '_stdint'

Native. Runtime. Memory

• KT-74280 Native: GC.collect crashes with -Xallocator=std

Tools. CLI

• KT-75588 [2.1.20-RC] "was compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler" warnings despite using the same compiler version
• KT-74663 kotlinc-js CLI: not providing -ir-output-dir results in NullPointerException

Tools. Compiler Plugins

• KT-76162 "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" after updating to 2.1.20

Tools. Gradle

• KT-73682 Compatibility with Gradle 8.12 release
• KT-73142 Kotlin Gradle plugin: Remove usage of Gradle's internal ExecHandleBuilder
• KT-36004 Update 'org.gradle.usage' attribute rules to support the 'JAVA_API' and 'JAVA_RUNTIME' value
• KT-73968 KotlinDependencyManagement tries to mutate configuration after it was resolved
• KT-73684 Run integration tests against Gradle 8.12
• KT-72694 Accessing Task.project during execution is being deprecated in Gradle 8.12
• KT-73683 Compile against Gradle API 8.12

Tools. Gradle. JS

• KT-77119 KJS: Gradle: Setting custom environment variables in KotlinJsTest tasks no longer works
• KT-74735 KGP uses Gradle internal CompositeProjectComponentArtifactMetadata
• KT-71879 Notice of upcoming deprecation for Boolean 'is-' properties in Gradle Groovy scripts

Tools. Gradle. Multiplatform

• KT-75808 KGP: MPP with jvm target and Gradle java-test-fixtures is broken
• KT-75605 Dependency resolution fails in commonTest/nativeTest source sets for KMP module when depending on another project due to missing PSM
• KT-75512 Maven-publish: ArtifactId is not correct inpom file with customized withXml

Tools. Incremental Compile

• KT-62555 Wrong ABI fingerprint for inline function containing a lambda
• KT-75883 Follow-up: switch from INSTANCE heuristic to outerClass chain

Tools. Kapt

• KT-75936 K2 KAPT: unsupported FIR element kinds in constant evaluation
• KT-75942 K2 KAPT: underscore not allowed here

Tools. Scripts

• KT-76424 Dependencies in main.kts not working with 2.1.20
• KT-76296 Kotlin script compiler crashes when secondary constructor calls a function
• KT-75589 Scripts: "IndexOutOfBoundsException in jdk.internal.util.Preconditions.outOfBounds" when trying to extend a class which uses global variable

Tools. Wasm

• KT-76161 Wasm: "export startUnitTests was not found" after updating to Kotlin 2.1.20

Kotlin 2.1.21-RC2

Changelog

Tools. Gradle. JS

• KT-77119 KJS: Gradle: Setting custom environment variables in KotlinJsTest tasks no longer works

Kotlin 2.2.0-Beta2

Changelog

Analysis API

• KT-73337 Migrate analysis sources to new IR parameter API
• KT-68393 Analysis API: Rename KaClassLikeSymbol. classIdIfNonLocal to classId
• KT-62924 Analysis API: rename KtCallableSymbol.callableIdIfNonLocal -> callableId
• KT-63718 Analysis API: Stub-based dependency symbol providers of library source sessions compute the wrong package name sets

Analysis API. FIR

Fixes

• KT-76540 K2: Missing library dependency on Android SDK from androidx.activity-1.8.2 causes LiveEdit failures
• KT-73266 K2. "Declaration should have non-local container" with unclosed annotation on top-level function
• KT-76432 JavaClassUseSiteMemberScope: Expected FirResolvedTypeRef with ConeKotlinType but was FirUserTypeRefImpl
• KT-76217 K2 AA: "No fir element was found for KtParameter" with multiple context parameter lists
• KT-76366 ContextCollector: annotations on class members don't have the class as implicit receiver
• KT-76352 ContextCollector: wrong class annotation context in BODY mode
• KT-76341 ContextCollector: support dangling modifiers
• KT-76332 "Declaration should have non-local container" for declaration inside file annotation
• KT-76331 Cleanup FileStructureElement for classes
• KT-76115 Disable FirElementBuilder#getFirForElementInsideAnnotations optimization for files, classes and scripts
• KT-76347 ContextCollector: avoid resolution for enum entry annotations
• KT-76272 Cleanup AbstractFileStructureTest
• KT-75542 K2 AA: "FirDeclaration was not found for class KtNamedFunction, fir is class FirErrorExpressionImpl" for unclosed annotation on member function
• KT-73117 K2 AA: Exception "Setter is not found" when val has a setter without body
• KT-73719 K2. "FirDeclaration was not found for class KtDestructuringDeclaration, fir is class FirBlockImpl" on incorrect chain call

Analysis API. Providers and Caches

• KT-74541 Analysis API: Include files generated by resolve extensions in KaModule content scopes
• KT-64236 Analysis API: Introduce a separate module for fallback dependencies of library source modules
• KT-63780 Analysis API: Invalidate resolvable library sessions when binary library modules are modified

Analysis API. Stubs and Decompilation

• KT-71787 PsiRawFirBuilder.Visitor#visitStringTemplateExpression forces AST loading

Analysis API. Surface

• KT-76018 K2: Stop the wold leads to deadlock/freeze
• KT-73669 Support psi-based symbol pointer for implicit primary constructors
• KT-76011 KaFirNamedClassSymbol#companionObject doesn't provide generated objects generated by compiled plugins
• KT-76008 Provide PSI-based implementation for KaFirNamedClassSymbol#companionObject

Backend. Native. Debug

• KT-75991 Xcode 16.3: Fix lldb stepping test over an inline function

Backend. Wasm

• KT-76747 [Wasm] Wasm name section absent for wasm structs
• KT-76701 K/Wasm: custom formatters are not loaded when a project is built with incremental compilation
• KT-66081 K/WASM: 0/0, 5/0 and 5%0throw not ArithmeticException, but RuntimeError
• KT-76287 [Wasm] Enable stdlib and kotlin.test tests after compiler bootstrap
• KT-75871 [Wasm] Implement new RTTI approach
• KT-75872 Wasm / IC: IllegalStateException: IC internal error: can not find library
• KT-73362 Migrate K/Wasm sources to new IR parameter API

Compiler

New Features

• KT-70722 Implement better Kotlin warnings for value classes and JEP 390 (Warnings for Value-Based Classes)
• KT-57919 Store all annotations in Kotlin metadata on JVM under a flag
• KT-54205 Support jakarta Nullability annotations

Performance Improvements

• KT-76422 FirJavaFacade#createFirJavaClass: do not compute super type references right away

Fixes

• KT-75828 Store backing field/delegate annotations and extension receiver annotations in metadata
• KT-76663 KJS: KotlinNothingValueException caused by expression return since 2.1.20
• KT-76615 K2: "IllegalArgumentException: Inline class types should have the same representation: Lkotlin/UByte; != B" for mixed Java/Kotlin code
• KT-76805 Wrong NPE occurs when assigning synthetic properties with platform types in Kotlin 2.1.20
• KT-76253 K2 Compiler: Less precise diagnostic COMPONENT_FUNCTION_AMBIGUITY for flexible type
• KT-76583 CCE: suspend lambda attempts to unbox value class parameter twice after lambda suspended
• KT-59526 Store annotation default values in metadata on JVM
• KT-63850 K2: setter with an annotated parameter has isNotDefault == false flag in metadata
• KT-75712 -Wextra: false positive UNUSED_LAMBDA_EXPRESSION on functional type variable assignment with inferred type
• KT-69624 Debugger: Missing local variable in Variables view (inline function)
• KT-75992 Xcode 16.3: stacktraces on simulators are not symbolicated
• KT-76199 Introduce -Xcontext-sensitive-resolution compiler flag
• KT-75553 MISSING_DEPENDENCY_SUPERCLASS and MISSING_DEPENDENCY_SUPERCLASS_WARNING is reported at the same time on the same element
• KT-76159 Obsolete error "'@JvmDefaultWithCompatibility' annotation is only allowed on interfaces" should be removed
• KT-76660 False negative RETURN_NOT_ALLOWED in lambda in default argument leads to NoClassDefFoundError: $$$$$NON_LOCAL_RETURN$$$$$
• KT-76301 Fail to infer types after syntactical change
• KT-74999 K2: KotlinNothingValueException within Extension Function
• KT-76675 KIAEWA exception at KaFirDataFlowProvider with non-local return from nested inline call
• KT-75756 Backend Internal error: Exception during IR lowering when trying to access variable from providedProperties in class within kotlin custom script
• KT-76171 "KotlinIllegalArgumentExceptionWithAttachments: Expected expression 'FirSingleExpressionBlock' to be resolved"
• KT-76345 Enhance variable fixation
• KT-76578 [FIR, K1/K2 Regression] lateinit is allowed on loop parameters
• KT-76448 FirOverrideChecker: class ClsMethodImpl is not a subtype of class KtNamedDeclaration for factory VIRTUAL_MEMBER_HIDDEN
• KT-73360 Migrate K/JVM sources to new IR parameter API
• KT-76606 Enable 'Indy: Allow lambdas with annotations' by default
• KT-74852 Kotlin/Native: allow caches for thread state checker and sanitizers
• KT-76130 IR evaluator does not support array literals in annotation parameter default values
• KT-76436 Missing K2 checker: non-local return through lambda passed to inline f/o
• KT-74326 False negative: no variable must be initialized ...

Kotlin 2.1.21-RC

Changelog

Backend. Native. Debug

• KT-75991 Xcode 16.3: Fix lldb stepping test over an inline function

Compiler

• KT-75992 Xcode 16.3: stacktraces on simulators are not symbolicated
• KT-76663 KJS: KotlinNothingValueException caused by expression return since 2.1.20
• KT-75756 Backend Internal error: Exception during IR lowering when trying to access variable from providedProperties in class within kotlin custom script
• KT-76209 CONFLICTING_UPPER_BOUNDS on Nothing bound
• KT-70352 K2: False-negative CONFLICTING_UPPER_BOUNDS on Nothing bound
• KT-74739 Native: "IllegalArgumentException: All constructors should've been lowered: FUNCTION_REFERENCE"
• KT-75483 Native: redundant unboxing generated with smart cast
• KT-71425 IR Inliner: investigate return type of an inlined block

Compose compiler

• b/408013789 Add missing return for the default function wrappers
• b/405541364 Realize coalescable children in the body of key call
• b/401484249 Generate a group around Array constructor call
• b/400380396 Fix missing endMovableGroup call with early return in key function

Native

• KT-76252 Native: executable crash with generic value classes with 2.1.20

Native. C and ObjC Import

• KT-75781 Xcode 16.3: Fix cinterop tests failing with fatal error: could not build module '_stdint'

Native. Runtime. Memory

• KT-74280 Native: GC.collect crashes with -Xallocator=std

Tools. CLI

• KT-74663 kotlinc-js CLI: not providing -ir-output-dir results in NullPointerException

Tools. Compiler Plugins

• KT-76162 "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" after updating to 2.1.20

Tools. Gradle

• KT-73142 Kotlin Gradle plugin: Remove usage of Gradle's internal ExecHandleBuilder
• KT-73684 Run integration tests against Gradle 8.12
• KT-74889 Compile against Gradle 8.13 API
• KT-74887 Compatibility with Gradle 8.13 release
• KT-36004 Update 'org.gradle.usage' attribute rules to support the 'JAVA_API' and 'JAVA_RUNTIME' value
• KT-72694 Accessing Task.project during execution is being deprecated in Gradle 8.12
• KT-74890 Run Gradle integrations test against Gradle 8.13 release
• KT-73682 Compatibility with Gradle 8.12 release
• KT-73968 KotlinDependencyManagement tries to mutate configuration after it was resolved
• KT-73683 Compile against Gradle API 8.12

Tools. Gradle. JS

• KT-74735 KGP uses Gradle internal CompositeProjectComponentArtifactMetadata
• KT-71879 Notice of upcoming deprecation for Boolean 'is-' properties in Gradle Groovy scripts

Tools. Gradle. Multiplatform

• KT-75808 KGP: MPP with jvm target and Gradle java-test-fixtures is broken
• KT-75605 Dependency resolution fails in commonTest/nativeTest source sets for KMP module when depending on another project due to missing PSM
• KT-75512 Maven-publish: ArtifactId is not correct inpom file with customized withXml

Tools. Incremental Compile

• KT-62555 Wrong ABI fingerprint for inline function containing a lambda

Tools. Kapt

• KT-75936 K2 KAPT: unsupported FIR element kinds in constant evaluation
• KT-75942 K2 KAPT: underscore not allowed here

Tools. Scripts

• KT-76424 Dependencies in main.kts not working with 2.1.20
• KT-76296 Kotlin script compiler crashes when secondary constructor calls a function
• KT-75589 Scripts: "IndexOutOfBoundsException in jdk.internal.util.Preconditions.outOfBounds" when trying to extend a class which uses global variable

Tools. Wasm

• KT-76161 Wasm: "export startUnitTests was not found" after updating to Kotlin 2.1.20

Kotlin 2.2.0-Beta1

Changelog

Analysis API

• KT-75880 K2 Mode: Typealias reference resolves to the underlying class in KMP project
• KT-74246 KaVisibilityChecker.isVisible is inefficient with multiple calls on the same use-site
• KT-57733 Analysis API: Use optimized ModuleWithDependenciesScopes in combined symbol providers

Analysis API. Code Compilation

• KT-75502 K2: IDEA hangs when evaluating inside kotlin-stdlib modules in the Kotlin project
• KT-73077 Evaluation of inline functions is broken inside Kotlin project and Amper module in Idea sources
• KT-73936 K2: CyclicInlineDependencyException: Inline functions have a cyclic dependency in evaluator
• KT-74582 InterpreterMethodNotFoundError when trying to evaluate simple expressions after recent fixes
• KT-74524 Compilation exception with incorrect JvmName annotation arguments
• KT-74443 Compilation peer collector ignores inline property accessors

Analysis API. FIR

Performance Improvements

• KT-75790 Experiment with increasing DEFAULT_LOCKING_INTERVAL time
• KT-72159 LLFirCompilerRequiredAnnotationsTargetResolver: consider rewriting it to use honest jumping locks

Fixes

• KT-72908 K2 Analysis API: "FirDeclaration was not found for class org.jetbrains.kotlin.psi.KtFunctionLiteral" with non-local destructuring declaration without initializer before init block
• KT-75532 ContextCollector: scope for an anonymous function type parameter contains regular parameters
• KT-74508 FirElementBuilder#findElementInside should reuse logic from KtToFirMapping#getFir
• KT-73066 [LL] Enable low-level-api-fir-native even with the disabled native part
• KT-75132 Investigate failures of sandbox diagnostic test
• KT-75130 Set up LL FIR tests for sandbox test data
• KT-73386 Standardize LL FIR test for compiler test data
• KT-75125 ISE “Value classes cannot have 0 fields” on instantiating inline class without fields
• KT-75179 ContextCollector: support error properties
• KT-74632 K2: ISE FirLazyDelegatedConstructorCall should be calculated before accessing
• KT-73493 Support context parameters
• KT-73183 Support context parameters in ContextCollectorVisitor
• KT-60350 K2 IDE: top level destructuring RHS should be resolvable
• KT-74794 K2: FirLazyExpression should be calculated before accessing with context parameter and implicit return type
• KT-72938 Get rid of KaFirAnnotationListForReceiverParameter
• KT-73727 Exception in implicit type resolution

Analysis API. Infrastructure

• KT-74917 [Analysis API, Test Framework] Introduce a way to acquire PsiFile for a given TestFile in KtTestModule

Analysis API. Light Classes

• KT-75391 Reduce the amount of psi-based logic in light classes
• KT-70001 SLC adds @Override with zero text offset on override member
• KT-75755 K2. False positive red code on vararg parameters in Kotlin class with @JvmOverloads when called from Java
• KT-75397 Constructors and functions with non-last vararg parameters are treated as varargs
• KT-73405 Get rid of KtElement#{symbolPointer, symbolPointerOfType} API usages
• KT-74868 Support context parameters
• KT-74733 SymbolPsiLiteral.text == value for Java constant
• KT-74620 Delegated functions with value classes are present in light classes
• KT-74595 Static functions with value classes are present in light classes
• KT-74284 Synthetic data class methods using value class types present in LC

Analysis API. Providers and Caches

• KT-74090 Analysis API: Support dumb mode (restricted analysis)
• KT-74943 Analysis API: Replace KotlinGlobalModificationService with simpler global modification event publishing and listener-based modification trackers
• KT-70518 K2: Analysis API: Access indices outside of ConcurrentMap computation in symbol providers
• KT-62115 Analysis API: Package providers are not cached per search scope
• KT-74302 Analysis API: LLFirProvider should disregard self-declarations in getFirClassifierBy*
• KT-74463 Analysis API: LLNativeForwardDeclarationsSymbolProvider queries its cache even when the ClassId cannot represent a native forward declaration
• KT-67868 Analysis API: Improve the architecture of LLFirKotlinSymbolProviders

Analysis API. Standalone

• KT-72810 withMultiplatformLightClassSupport is inconvenient in Standalone

Analysis API. Stubs and Decompilation

• KT-68484 K2 IDE, Analysis API: "We should be able to find a symbol for function" for getting KaType of Iterable<T>.map(transform: (T) -> R) parameter in J2K

Analysis API. Surface

New Features

• KT-74475 Add isInline for KaPropertySymbol
• KT-75063 KaScopeContext: support context parameters

Performance Improvements

• KT-70165 Introduce PSI-based KaSymbols for K2

Fixes

• KT-72482 "KotlinIllegalArgumentExceptionWithAttachments: Expected all candidates to have same callableId but some of them but was different" on trying to add the import
• KT-75894 Cannot build KaFirJavaFieldSymbol for FirFieldImpl
• KT-75586 KaFirPropertyGetterSymbol#isInline and KaFirPropertySetterSymbol#isInline is incorrect for accessors with explicit modifier
• KT-58572 Analysis API: Enforcing STATUS resolve in 'KtFirNamedClassOrObjectSymbol.visibility' may cause lazy resolve contract violation
• KT-72730 K2: "Unexpected owner function: KtNamedFunction" on vararg val parameter in function
• KT-75574 Recognize injected code fragment copies
• KT-75573 Recognize physical file copies as dangling files
• KT-74801 Analysis API: Publish/subscribe to modification events with a single message bus topic
• KT-73290 Analysis API: Improve the architecture of content scopes and resolution scopes
• KT-68901 Constructor delegation call receiver missing in fir implementation
• KT-75115 Analysis API: The JavaModuleResolver compiler class is leaked to Analysis API platform implementations
• KT-75123 K2. KaFirNamedFunctionSymbol should contain a receiver
• KT-72639 Support context parameter API
• KT-73112 AA: FirExpression.toKtReceiverValue should handle context receivers properly
• KT-74905 Cannot find context receiver in FIR declaration
• KT-74563 createPointer is overloaded not for all implementations
• KT-73722 Analysis API: Automatically check that the API surface is fully documented
• KT-65065 Provide KtTypeReference#getShortTypeText()

Backend. Wasm

• KT-59032 Support instantiation of annotation cl...

Kotlin 2.1.20

Changelog

Analysis API

Fixes

• KT-68198 Analysis API: Support application service registration in plugin XMLs
• KT-57733 Analysis API: Use optimized ModuleWithDependenciesScopes in combined symbol providers
• KT-73156 AA: type retrieval for erroneous typealias crashes
• KT-71907 K2 debugger evaluator failed when cannot resolve unrelated annotation
• KT-69128 K2 IDE: "Unresolved reference in KDoc" reports existing Java class in reference to its own nested class
• KT-71613 KaFirPsiJavaTypeParameterSymbol cannot be cast to KaFirTypeParameterSymbol
• KT-71741 K2 IDE. Classifier was found in KtFile but was not found in FirFile in libraries/tools/kotlin-gradle-plugin-integration-tests/build.gradle.kts in kotlin.git and broken analysis
• KT-71942 Need to rethrow Intellij Platform exceptions, like ProcessCanceledException
• KT-70949 Analysis API: "containingDeclaration" does not work on nested Java classes in K2 implementation
• KT-69736 K2 IDE: False positive resolution from KDoc for value
• KT-69047 Analysis API: Unresolved KDoc reference to extensions with the same name
• KT-70815 Analysis API: Implement stop-the-world session invalidation
• KT-69630 KAPT User project builds with KAPT4 enabled fail with Metaspace overflow

Analysis API. Code Compilation

• KT-71263 K2 evaluator: Error in evaluating self property with extension receiver

Analysis API. FIR

Performance Improvements

• KT-72025 FileStructureElement: reduce redundant resolve
• KT-74012 Redundant FirAbstractBodyResolveTransformerDispatcher.<init> CPU consumption
• KT-73900 ContextCollectorVisitor#computeContext may spend significant time on createSnapshot
• KT-73665 FirElementFinder is inefficient in large files
• KT-73330 Remove bodies from functions without contracts after the CONTRACTS phase
• KT-73017 Analysis API: FirReferenceResolveHelper.getSymbolsByResolvedImport searches for classes even when the selected FqName is a known package

Fixes

• KT-72308 getOrBuildFir returns null for this expression for plusAssign operator
• KT-72660 ISE: Recursive update at org.jetbrains.kotlin.analysis.low.level.api.fir.caches.FirCaffeineCache.getValue
• KT-74097 ISE: Recursive update at org.jetbrains.kotlin.analysis.low.level.api.fir.caches.FirCaffeineCache.getValue
• KT-74098 ISE: Recursive update at org.jetbrains.kotlin.analysis.low.level.api.fir.caches.FirCaffeineCache.getValue
• KT-72148 K2: KISEWA: Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirValueParameterImpl(DataClassMember) but FirArgumentListImpl found
• KT-73079 K2: Internal compiler error when conflicting type aliases are present
• KT-73456 Expected FirResolvedContractDescription but FirRawContractDescriptionImpl found for FirSimpleFunctionImpl
• KT-73259 Expected FirResolvedContractDescription but FirLegacyRawContractDescriptionImpl found for FirSimpleFunctionImpl
• KT-72740 FirDanglingModifierList: lazyResolveToPhase(STATUS) cannot be called from a transformer with a phase STATUS
• KT-66132 K2: FirRegularClass expected, but FirFileImpl found | Containing declaration is not found
• KT-72196 K2. KMP. IllegalStateException: expect-actual matching is only possible for code with sources
• KT-72652 FirProvider#getContainingClass should support FirDanglingModifierSymbol
• KT-73105 Lazy resolve contract violation (BODY_RESOLVE from BODY_RESOLVE)
• KT-66261 K2: Analysis API: "FirDeclaration was not found for class org.jetbrains.kotlin.psi.KtProperty, fir is null" with MULTIPLE_LABELS_ARE_FORBIDDEN K2 error
• KT-72315 K2. KIWA on usage of always-true OR in guard condition
• KT-65707 K2 IDE: unresolved calls of callables imported with typealias as qualifier
• KT-61516 K2: Provide an LL FIR implementation for getContainingClassSymbol (in FirHelpers)
• KT-72853 Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirContextReceiverImpl(Source) but FirArgumentListImpl found
• KT-64215 K2: do not resolve type annotations of receiver if it is used as an implicit return type
• KT-64248 K2: do not resolve type annotations of context receiver if it is used as an implicit return type
• KT-72821 Add assertion to diagnostic tests to check that all declarations have BODY_RESOLVE phase at the end
• KT-64056 K2: K2: FirLazyBodiesCalculator shouldn't calculate annotation arguments on type phase
• KT-71651 K2 IDE: False positive NON_LOCAL_SUSPENSION_POINT in suspend function call
• KT-72164 K2. IllegalArgumentException when pre and post increment are used simultaneously in assignment
• KT-71174 Illegal scope used
• KT-72407 FirImplementationByDelegationWithDifferentGenericSignatureChecker: FirLazyExpression should be calculated before accessing
• KT-72228 K2: Reformat doesn't work in project with Kotlin 2.0.21
• KT-69671 TYPES phase contract violation through JavaSymbolProvider
• KT-71348 K2: KotlinIllegalStateExceptionWithAttachments: 'By now the annotations argument mapping should have been resolved' during code inspection
• KT-72024 FirClassVarianceChecker: Expected FirResolvedTypeRef with ConeKotlinType but was FirImplicitTypeRefImplWithoutSource
• KT-71746 K2 IDE. ISE: Zero or multiple overrides found for descriptor in FirRegularClassSymbol serializing/ExternalSerializer and red code on @Serializer(forClass) ` usage

Analysis API. Infrastructure

• KT-72922 KotlinFakeClsStubsCache project leakage
• KT-71988 Improve scripts test coverage by LL FIR
• KT-64687 K2: Analysis API: migrate AbstractFirLibraryModuleDeclarationResolveTest to kotlin repo

Analysis API. Light Classes

• KT-73492 K2. FP error in Java file when using @JvmSuppressWildcards annotation without arguments
• KT-66763 K2: Get rid of context receivers in Analysis API and LL API
• KT-71781 SLC: migrate SLC from KotlinModificationTrackerService to KotlinModificationTrackerFactory
• KT-67963 K2: PsiInvalidElementAccessException on redeclaration of class with constructor
• KT-71407 K2: Do not report @JvmField default value as PsiField initializer in K2
• KT-72078 K2 PSI change for constructor parameter with value class type

Analysis API. Providers and Caches

• KT-69247 Analysis API: Invalidate sessions after builtins modification events
• KT-72704 ISE: No 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter'(53) in array owner: LLFirBuiltinsAndCloneableSession for Builtins for JS/wasm-js (JS)
• KT-67148 Analysis API: Introduce a weak reference cache for the original KtSymbol in KtSymbolPointer
• KT-73395 Analysis API: JavaElementPsiSourceWithSmartPointer contains strong references to PSI
• [KT-72390](https://youtrack.jetbrains.com/issue/KT-...

Kotlin 2.1.20-RC3

Changelog

Compiler

• KT-75578 K2: False negative [SUPER_CALL_WITH_DEFAULT_PARAMETERS] when calling the upper-class implementation of a method with the default value argument
• KT-75965 The iOS app did not run successfully in Release mode

Native

• KT-75807 CMP caching fails for iOS with Kotlin 2.1.20-RC2

Kotlin 2.1.20-RC2

Changelog

Compiler

• KT-75649 K2: NPE on assigning platform type value to non-nullable lateinit var
• KT-75483 Native: redundant unboxing generated with smart cast
• KT-75526 Regression in K2 scripting: local name doesn't shadow one from the implicit receiver
• KT-75444 Contradictions in the constraint system are ignored in case of multiple constraints from forking points
• KT-75111 False negative "This declaration needs opt-in" for usage of enum entry with OptIn marker in another module
• KT-74764 Native: merge init nodes generated within the same LLVM module for the same klib

Compose compiler

• CMP-7571 1.8.0-alpha03 incompatible with Compose based on k1
• b/397855145 Fix "Unknown file" error in target annotation inference

JavaScript

• KT-75606 KJS: java.lang.AssertionError: Different declarations with the same signatures were detected
• KT-72437 KJS. Invalid copy method for inherited JSO with type parameters

Klibs

• KT-75393 Non-JVM artifacts from Kotlin 2.1.20-RC fail on 2.1.x releases due to IMPLICIT_ARGUMENT

Native

• KT-70202 Xcode 16 Linker fails with SIGBUS

Tools. Compiler Plugins

• KT-73897 PowerAssert: Implicit argument detection is brittle in a number of cases

Tools. Gradle

• KT-73842 Gradle: AGP failing tests with "Failed to calculate the value of property 'generalConfigurationMetrics'" using KGP
• KT-74394 KGP + isolated projects: "Something has been appended to this collector already"
• KT-75262 Gradle test-fixtures plugin apply order breaks the project
• KT-75277 FUS statistics: 'java.lang.IllegalStateException: The value for this property cannot be changed any further' exception is thrown during project import

Tools. Gradle. JS

• KT-75485 KJS: "Module not found: Error: Can't resolve 'style-loader' and 'css-loader'" in 2.1.20-RC