ChangeLog-2.0.X.md

2.0.21

Apple Ecosystem

• KT-69093 Xcode 16 support in Kotlin

Backend. Native. Debug

• KT-71374 lldb: step out breaks breaking in Xcode 16

Compiler

Fixes

• KT-69735 K2: Static fields are missing from the declaration list of corresponding IrClass for java class
• KT-71122 Regression in Kotlin Compiler 2.0 causing NPE in the runtime
• KT-70931 K2 / Scripts: "cannot convert IrExpression to ConstantValue" when using function annotation
• KT-70584 K2: "IllegalStateException: flow for PostponedLambdaExitNode not initialized - traversing nodes in wrong order?"
• KT-70808 K2: "node has already been visited" with anonymous object in dead code
• KT-69985 K2: Classifier declarations from root package are resolved without imports in non-root packages
• KT-70683 K2: Internal compiler error in IrFakeOverrideSymbolBase.getOwner
• KT-70901 False positive Public-API inline function cannot access non-public-API property accessor
• KT-70930 K2: Java annotations not present on ENUM_ENTRY IR elements
• KT-70194 K2 IDE: exception on a very red file
• KT-69399 Native: IllegalStateException: "Failed to build cache"

Compose compiler

Fixes

• b/329477544 Force open / overridden Composable functions to be non-restartable.
• b/361652128 Disable live literal transform if the corresponding flag is disabled

IR. Actualizer

• KT-70894 IR crash. Unprocessed IrFunctionFakeOverrideSymbol when actualize to Java

IR. Tree

• KT-71191 SymbolTable: Check if the provided signature is public before adding a symbol to the SymbolTable

Native. Build Infrastructure

• KT-71485 K/N runtime parts don't build due to _Float16 issues on x86_64 macOS

Native. C Export

• KT-69507 LLVM 11 clang with Xcode 16 headers: standard c++ headers

Native. C and ObjC Import

• KT-71029 Investigate why stdarg.h declarations leak into testModuleA

Native. Platform Libraries

• KT-70566 LLVM 11 clang with Xcode 16 headers: 'sys/cdefs.h' file not found
• KT-71624 Eliminate remaining UIKit/AppKit removed signatures
• KT-70031 Rebuild platform libraries in 2.0.21 with Xcode 16

Native. Testing

• KT-70603 C++ with -fmodules: cyclic dependency in module 'std': std -> _wctype -> __wctype -> std in dev llvm toolchains

Tools. CLI. Native

• KT-71262 KotlinNativeLink tasks fetching from network despite -Xoverride-konan-properties=dependenciesUrl= being set

Tools. Compiler Plugins

• KT-71038 PowerAssert: Constant on RHS of elvis operator leads to compiler crash

Tools. Daemon

• KT-35381 Get rid of the native-platform usage in kotlin compiler

Tools. Gradle. Multiplatform

• KT-71444 Certain POMs produced by Kotlin 2.0.20 cannot be consumed by KMP projects with Android targets
• KT-70700 Gradle 8.10: The value for task ':commonizeNativeDistribution' property 'kotlinNativeBundleBuildService' cannot be changed any further
• KT-71396 Gradle client side JVM explodes with OOM due to xcodebuild logs

Tools. Gradle. Native

• KT-71419 Light bundle KGP IT run against a stable K/N version

Tools. JPS

• KT-71450 Constant build failure: com.intellij.util.io.ClosedStorageException: storage is already closed

2.0.20

Analysis. API

New Features

• KT-68143 Analysis API: support KtWhenConditionInRange call resolution

Performance Improvements

• KT-67195 K2: do not call redundant resolve on body resolution phase for classes

Fixes

• KT-67360 Analysis API: KtDestructuringDeclarationSymbol#entries shouldn't be KtLocalVariableSymbol
• KT-67748 K2: AllCandidatesResolver modifies the original FirDelegatedConstructorCall
• KT-68198 Analysis API: Support application service registration in plugin XMLs
• KT-62936 Analysis API: NativeForwardDeclarationsSymbolProvider is not supported for Kotlin/Native
• KT-68689 LL API: support analysis from builtins module
• KT-69630 KAPT User project builds with KAPT4 enabled fail with Metaspace overflow
• KT-65417 K2 IDE: KTOR false positive expect-actual matching error on enum class because of implicit clone() in non-JVM source sets
• KT-68882 Analysis API: Refactor KaSymbols
• KT-65413 K2 IDE: KTOR unresolved serializer() call for @Serializable class in common code
• KT-67996 Analysis API: rename Kt prefix to Ka
• KT-67775 Analysis API: expose only interfaces/abstract classes for the user surface
• KT-68009 K2: lowering transformers of Compose compiler plugin access AbstractFir2IrLazyFunction modality, which results in null point exception
• KT-68918 collectCallCandidates works incorrectly for parenthesis invoke
• KT-68462 Analysis API: Integrate project-structure module into analysis-api and analysis-api-platform-interface
• KT-69131 AA: "provideDelegate" operator is not resolved from the delegation reference in FIR implementation
• KT-69055 Analysis API: Stabilize KaScopes
• KT-66216 K2 IDE. "FirDeclaration was not found for class org.jetbrains.kotlin.psi.KtProperty, fir is null" on incorrect string template
• KT-68959 Introduce KaSeverity
• KT-53669 Analysis API: redesign KtSymbolOrigin to distinguish kotlin/java source/library declarations
• KT-68846 Mark KaFirReference and all implementations with internal modifier
• KT-68845 Move KaSymbolBasedReference to resolution package
• KT-68844 Move KaTypeProjection to types package
• KT-65849 K2: Rename 'high-level-api' family of JARs to 'analysis-api'
• KT-62540 Remove uses of TypeInfo.fromString and TypeInfo.createTypeText from Kotlin plugin
• KT-62889 K2 IDE. FP MISSING_DEPENDENCY_CLASS on not available type alias with available underlying type
• KT-68155 Analysis API: Add PSI validity check to analyze
• KT-62343 Analysis API: fix binary incopatibility problems cause by KtAnalysisSessionProvider.analyze being inline
• KT-68498 To get reference symbol the one should be KtSymbolBasedReference
• KT-68393 Analysis API: Rename KaClassLikeSymbol. classIdIfNonLocal to classId
• KT-62924 Analysis API: rename KtCallableSymbol.callableIdIfNonLocal -> callableId
• KT-66712 K2 IDE. SOE on settings string template for string variable with the same name
• KT-65892 K2: "We should be able to find a symbol" for findNonLocalFunction
• KT-68273 AA: support KtFirKDocReference#isReferenceToImportAlias
• KT-68272 AA: KtFirReference.isReferenceToImportAlias doesn't work for references on constructor
• KT-66996 Analysis API: Expose the abbreviated type of an expanded KtType
• KT-66646 K2: Expected FirResolvedTypeRef with ConeKotlinType but was FirUserTypeRefImpl from FirJsHelpersKt.isExportedObject
• KT-68203 K2: Analysis API: wrong type of receiver value in case of imported object member
• KT-68031 LL resolve crash in case of PCLA inference with local object
• KT-67851 K2: PsiReference#isReferenceTo always returns false for references to Java getters
• KT-68076 AA: use type code fragments for import alias detection
• KT-65915 K2: Analysis API: extract services registration into xml file
• KT-68049 Analysis API: do not expose imported symbols
• KT-68075 K2: Analysis API: Type arguments for delegation constructor to java constructor with type parameters not supported
• KT-65190 AA: reference to the super type is not resolved
• KT-68070 AA: KtExpressionInfoProvider#isUsedAsExpression doesn't work for KtPropertyDelegate
• KT-67743 K2: Stubs & AbbreviatedTypeAttribute
• KT-67706 K2: "KtDotQualifiedExpression is not a subtype of class KtNamedDeclaration" from UnusedChecker
• KT-68021 Analysis API: do not break the diagnostic collection in a case of exception from some collector
• KT-67973 AA FIR: wrong KtCall modeling for == from type bound
• KT-67949 AA: Type arguments of Java methods' calls are not reported as used by KtFirImportOptimizer
• KT-67988 AA: functional type at receiver position should be wrapped in parenthesis
• KT-66536 Analysis API: ContextCollector doesn't provide implicit receivers from FirExpressionResolutionExtension
• KT-67321 AA: Type arguments of Java methods' calls are not resolved
• KT-64158 K2: "KotlinIllegalArgumentExceptionWithAttachments: No fir element was found for KtParameter"
• KT-60344 K2 IDE. "KotlinExceptionWithAttachments: expect createKtCall to succeed for resolvable case with callable symbol" on attempt to assign value to param named getParam
• KT-64599 K2: "expect createKtCall to succeed for resolvable case with callable" for unfinished if statement
• KT-60330 K2 IDE. ".KotlinExceptionWithAttachments: expect createKtCall to succeed for resolvable case with callable symbol" on attempt to assign or compare true with something
• KT-66672 K2 IDE. False positive INVISIBLE_REFERENCE on accessing private subclass as type argument in parent class declaration
• KT-67750 Analysis API: Remove infix modifiers from type equality and subtyping functions
• KT-67655 Analysis API: declare a rule how to deal with parameters in KtLifetimeOwner
• KT-61775 Analysis API: KtKClassAnnotationValue lacks complete type information
• KT-67168 K2: Analysis API: Rendering is broken for JSR-305 enhanced Java types
• KT-66689 Analysis API: KtFirPackageScope shouldn't rely on KotlinDeclarationProvider for binary dependencies in standalone mode
• KT-60483 Analysis API: add isTailrec property to KtFunctionSymbol
• KT-67472 K2: Analysis API FIR: KtFunctionCall misses argument with desugared expressions
• KT-65759 Analysis API: Avoid hard references to LLFirSession in session validity trackers
• KT-60272 K2: Implement active invalidation of KtAnalysisSessions
• KT-66765 K2: Analysis API: support classpath substitution with library dependencies in super type transformer
• KT-67265 K2: status phase should resolve original declarations in the case of classpath subsitution
• KT-67244 K2: StackOverflowError in the case of cyclic type hierarchy and library classpath substitution
• KT-67080 K2: clearer contract for lazyResolveToPhaseWithCallableMembers
• KT-66713 K2 FIR: Expose a way to get the module name used for name mangling
• KT-61892 KtType#asPsiType could provide nullability annotations
• KT-66122 Analysis API: Pass KtTestModule instead of TestModule to tests based on AbstractAnalysisApiBasedTest

Analysis. Light Classes

• KT-65714 K2: IDE K2: "org.jetbrains.kotlin.analysis.api.fir.symbols.pointers.KtFirClassLikeSymbolPointer pointer already disposed"
• KT-65835 SymbolLightClassForClassLike.getName returns null for a companion object instead of Companion
• KT-68261 SLC: Constructors of sealed classes should be private
• KT-68696 Drop DecompiledPsiDeclarationProvider-related stuff
• KT-68404 SLC: wrong binary resolution to declaration with @JvmName
• KT-68275 LC: no arg constructor is not visible in light classes
• KT-66687 Symbol Light Classes: Duplicate field names for classes with companion objects
• KT-66804 Symbol Light Classes: Fields from the parent interface's companion are added to DefaultImpls

Apple Ecosystem

• KT-65542 Cinterop tasks fails if Xcode 15.3 is used

Backend. Native. Debug

• KT-67567 Native: after updating to LLVM 16 lldb hangs when smooth stepping

Backend. Wasm

• KT-70591 To much sources that don't exist inside SourceMap file
• KT-69529 compileProductionExecutableKotlinWasmJs FAILED: No such value argument slot in IrConstructorCallImpl: 1 (total=1)
• KT-68088 Wasm: "UNREACHABLE executed at Precompute.cpp:838" running gradle task wasmJsBrowserDistribution for compose multiplatform on Windows
• KT-65798 K/Wasm: make an error on default export usage
• KT-68828 Wasm test failure. expect-actual. private constructor in expect
• KT-68453 K/Wasm: "Supported JS engine not detected" in Web Worker
• KT-64565 Kotlin/wasm removeEventListener function did not remove the event listener
• KT-65322 [Wasm] Clean-up bootstrap code
• KT-66099 Wasm: local.get of type f64 has to be in the same reference type hierarchy as (ref 686) @+237036
• KT-63230 [WASM] println(null) prints 'ul'

Compiler

New Features

• KT-58310 Consider non-functional type constraints for type variable which is an expected type for lambda argument
• KT-68969 Consider implementing general "redundant interpolation prefix" warning
• KT-57872 Improve "Public-API inline function cannot access non-public-API" check
• KT-68165 Native: type checks on generic types boundary
• KT-67611 Implement improved handling of $ in literals
• KT-67787 Implement guard conditions for when-with-subject
• KT-39868 Allow access to protected consts and fields from a super companion object
• KT-66169 useContents lacks a contract
• KT-67767 Introduce an ability to enforce explicit return types for public declarations without enabling Explicit API mode
• KT-65841 Allow to actualize expect types in kotlin stdlib to builtins in JVM
• KT-53834 Support for JSpecify @NullUnmarked

Performance Improvements

• KT-69995 K2: Slow compilation when star projecting mutually recursive bounds from java
• KT-69723 K2: code analysis taking too long
• KT-69898 K2: Performance degradation in fir2ir caused by changes around intersection types
• KT-68034 Devirtualization analysis fails to devirtualize string.get

Fixes

• KT-67102 IR Evaluator: NoSuchFieldException when accessing a private delegated property
• KT-35305 "Overload resolution ambiguity" on function for unsigned types (UByte, UShort, UInt, ULong)
• KT-69211 K2: java.lang.IllegalArgumentException: Failed requirement
• KT-68874 Types with different captured types as type arguments are rendered incorrectly
• KT-66086 K/N: Unchecked illegal cast is not thrown
• KT-70186 Kotlin 2.0.20-Beta2: Unexpected number of type arguments: 0
• KT-68889 K2: type variable should not be fixed
• KT-69835 K2 / Native: kotlin.native.binary.gc=cms throws library cached but its dependency isn't error
• KT-70417 DELEGATED_MEMBER_HIDES_SUPERTYPE_OVERRIDE leads to NPE in BE
• KT-69964 K2: Returning from an in-place lambda doesn't compile
• KT-69773 K2: "Overload resolution ambiguity between candidate" with arrays
• KT-60261 K2: No origin is set for composite assignment operators
• KT-15388 Forbid delegated property to have external getter/setter
• KT-70238 K2: false negative VOLATILE_ON_VALUE for constructor properties
• KT-68669 K2: Generate inherited delegated members after actualization
• KT-63828 K2: Missing signature metadata for accessors of properties inherited from delegate
• KT-63871 K2: different value of isNotDefault flag for property inherited from delegate
• KT-67119 Migration warning from context receivers to context parameters
• KT-68997 K2: "No accessor found" for an inline value class when query the value of a delegated class by reflection
• KT-64106 Native: the compiler allows using -opt and -g at the same time
• KT-69766 K2: False negative: Internal setter of generic class is accessible from another module
• KT-68364 JVM: ISE "Bad exception handler end" on a non-local break/continue inside try with finally
• KT-69494 StackOverflowError in CfgTraverserKt.getPreviousCfgNodes
• KT-56880 K2. Conflicting overloads for main() isn't shown when language version is set to 2.0
• KT-69282 K2: equality of unsigned types with nullability works incorrectly
• KT-68492 JVM IR backend: IDE / Kotlin Debugger: AE “Non-reified type parameter under ::class should be rejected by type checker” on evaluating private generic function
• KT-70039 K2: inconsistent stability of vals of captured receivers
• KT-44139 Don't report overload resolution ambiguities if arguments contain an error type
• KT-68996 K2: "Not enough information to infer type argument" caused by typealias annotation with fixed generic argument
• KT-55851 K2: reference to a field from package private class crashes in runtime
• KT-65038 K2: Type alias from indirect dependency causes MISSING_DEPENDENCY_CLASS error
• KT-61875 Native: remove support for bitcode embedding
• KT-67693 Implement checkers for K1 compiler which will check the usage of K2 new features and report that they are not supported in K1 compiler
• KT-68556 K2: false negative PROPERTY_WITH_NO_TYPE_NO_INITIALIZER on uninitialized property without type
• KT-60445 K2/Java: investigate possible symbol clash while enhancing Java class type parameter bounds
• KT-64193 K2: No smartcast with two boolean expressions in a row
• KT-65546 K2. implement extended checker for unused anonymous parameter in lambda
• KT-68358 @EnhancedNullability is missing on value parameter type after inheritance by delegation with strict JSpecify enabled
• KT-67791 False negative "Synchronizing by Meters is forbidden" with inline value classes
• KT-69495 k2: inconsistent output of unsigned number in string templates
• KT-69619 K2. JAVA_TYPE_MISMATCH when Kotlin out generic type used in Java
• KT-69563 trying to call .source on FirPackageFragmentDescriptor results in exception
• KT-69611 Internal annotation FlexibleArrayElementVariance is written to output jar
• KT-69463 K2: false negative SUPER_CALL_WITH_DEFAULT_PARAMETERS with expect/actual declarations
• KT-68724 K2: "ABSTRACT_MEMBER_NOT_IMPLEMENTED" caused by open modifier on interface
• KT-69182 K2: OptIn on enum companion blocks enum constants
• KT-69191 K2: "Unresolved reference" caused by nested data objects
• KT-69569 Wrong paths when one type has multiple annotated arguments
• KT-55128 Wrong type path in type annotations when type arguments are compiled to wildcards
• KT-67692 Native: support LLVM opaque pointers in the compiler
• KT-69402 FirSupertypeResolverVisitor: ConcurrentModificationException
• KT-69062 K1: false-negative "unsupported feature" error on multi-dollar interpolation
• KT-68967 Consider demoting warnings about multi-dollar interpolation to IJ inspections
• KT-68957 False-negative diagnostics about multi-dollar interpolation on string literals without interpolation
• KT-69476 False negative NO_ELSE_IN_WHEN on when over intersection type with expect enum/sealed class
• KT-67069 K2: Delegated member calls interface method instead of fake override
• KT-63864 K2: Missing abbreviated type in metadata
• KT-59833 K2: Stop modifying values of enum entries
• KT-69421 K2: Resolve changed from delegated function to java default function
• KT-69392 K2: "UNSAFE_CALL": when with some variable subjects does not smartcast the variable
• KT-69053 K2: Unsupported intersection overrides for fields
• KT-69227 K2: "Argument type mismatch" caused by generic typealias and upper bound
• KT-31371 NOT_YET_SUPPORTED_IN_INLINE: incorrect error message for local inline function
• KT-49473 PROTECTED_CALL_FROM_PUBLIC_INLINE_ERROR: specialize error message for 'inline' property
• KT-49474 NON_PUBLIC_CALL_FROM_PUBLIC_INLINE: specialize error message for 'inline' property
• KT-49503 SUPER_CALL_FROM_PUBLIC_INLINE_ERROR: specialize error message for 'inline' property
• KT-11302 On inapplicable '@JvmStatic' annotation, highlight only the annotation, not the function signature
• KT-59510 K2: do not render annotations in the deprecation diagnostic
• KT-68532 "This code uses error suppression for 'INAPPLICABLE_JVM_NAME'. While it might compile and work, the compiler behavior is UNSPECIFIED and WON'T BE PRESERVED"
• KT-68859 K2: unable to suppress only "JAVA_MODULE_DOES_NOT_EXPORT_PACKAGE"
• KT-68469 [K2] MISSING_DEPENDENCY_CLASS caused by redundant @file:JvmName
• KT-68999 K2: Unify the style of FIR generator with IR and SIR tree-generators
• KT-66061 Kotlin/Native - building shared module for iOS - Argument list too long
• KT-49420 Suspicious behaviour of frontend in case of DefinitelyNotNull type overload
• KT-59752 K2: "Conflicting overloads" if function with same signature added to different contexts
• KT-68618 K1: Unresolved reference for qualified this in implicit type
• KT-25341 NOT_YET_SUPPORTED_IN_INLINE reported over anonymous object border
• KT-69215 K2: IllegalArgumentException for delegated function in anonymous object with captured type parameters
• KT-69044 Destructuring declaration shouldn't be possible in declaration in when
• KT-69028 K2: FirJvmActualizingBuiltinSymbolProvider returns null on builtins declarations if common source-set is not presented
• KT-15704 Rethink usage of term "type annotation" in error messages
• KT-68970 K2. Argument type mismatch caused by out projection in inferred type from if - else
• KT-68800 K2: Delete ConeAttributes.plus method
• KT-59389 K2: Missing AMBIGUOUS_LABEL
• KT-68803 K2: Smart cast fails with "Unresolved reference" when @Suppress("UNCHECKED_CAST") used in statement
• KT-68968 K2: Missing ILLEGAL_SUSPEND_FUNCTION_CALL diagnostic in initialization code of a local class inside suspend function
• KT-68336 K2 does not seem to pass the right constructor arguments to custom scripts
• KT-68517 "IrSimpleFunctionSymbolImpl is unbound" for actual class containing non-actual functions
• KT-59678 K2: Investigate ConeKotlinType.unCapture()
• KT-69027 K2: Initialize FirStdlibBuiltinSyntheticFunctionInterfaceProvider in library session
• KT-62818 K2: improve VAR_OVERRIDDEN_BY_VAL diagnostic message
• KT-68214 Rename TypeApproximatorConfiguration properties for clarity
• KT-68093 Implement deprecation of smartcasts on class-delegated properties
• KT-67270 Native: report more performance metrics from the compiler
• KT-68621 DATA_CLASS_INVISIBLE_COPY_USAGE false negative for inline fun
• KT-68568 K2: False-positive ACCIDENTAL_OVERRIDE caused by missing dependency class
• KT-66723 K2: NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS for actual typealias that extends to Java class with complicated hierarchy that includes default method
• KT-69000 Can't render constructor of intersection type
• KT-68849 K2: "ClassCastException: cannot be cast to kotlin.jvm.functions.Function2" caused by passing lambda to SAM constructor results
• KT-61744 Native: -Xsave-llvm-ir-after fails to check errors from LLVMPrintModuleToFile
• KT-67103 Support AbbreviatedTypeAttribute for aliased types from the source code
• KT-63921 K2: different representation of recursive type aliases
• KT-68679 K2: "Override has incorrect nullability in its signature compared to the overridden declaration" caused by subclass of Android HashMap
• KT-64335 K2: improve rendering of captured types in diagnostic messages
• KT-68820 K2: "Unresolved reference" on calling function with "contract" name
• KT-67933 K2: no conversion between fun interfaces if target has suspend
• KT-68230 K2: FirMissingDependencyClassChecker: Not supported: ConeFlexibleType
• KT-68531 K2: False-negative error on assignment to enum entry
• KT-68446 K2: compile-time failure on smart-casted generic value used as a when-subject in a contains-check with range
• KT-68678 K2: Drop using FirBuiltinSymbolProvider while compiling JVM stdlib
• KT-68382 Get rid of context receivers in FirScript implementation
• KT-68585 Implement new rules for CFA about enum entries
• KT-68110 K2: "Java type mismatch" caused by spring.Nullable
• KT-68613 K2: False positive CONFLICTING_PROJECTION after fixing KT-67764
• KT-67764 K2: False negative: Projection problem is not reported in is expression
• KT-67887 Expection on assigning to private field of value type
• KT-67801 NSME on evaluating private member function with value class parameter
• KT-67800 NSME on evaluating private top-level function with value class parameter
• KT-68542 K2: Fix referecing to @ExtensionFunctionType if it's declared in source
• KT-68188 K2: Properly support FunctionN creation for stdlib compilation
• KT-67946 K2: Crash on red code: Instead use FirErrorTypeRef for ERROR CLASS: Cannot infer argument for type parameter T
• KT-68526 K2: false-negative inconsistent data class copy visibility warning on call to generic data class copy function
• KT-68528 K2: false-positive inconsistent data class copy visibility warning on call to function from another module with identical value parameter types and return type
• KT-68525 K2: false-negative inconsistent data class copy visibility warning on callable reference to data class copy function
• KT-68617 K2: Secondary constructors in a sealed class have private visibility instead of protected in the generated IR
• KT-63920 K2: Private secondary sealed class constructor is private in metadata, but protected in K1
• KT-57996 Usages of Foo @Nullable [] produce only warnings even with -Xtype-enhancement-improvements-strict-mode -Xjspecify-annotations=strict
• KT-68207 K2: Investigate if losing ConeIntersectionType.upperBoundForApproximation during approximation leads to any issues
• KT-64990 K2: Remove usages of SymbolTable from FIR2IR
• KT-67798 NSME on assigning to private delegated property of value class
• KT-68264 K2: confusing INVISIBLE_* error when typealias is involved
• KT-68529 K2: false-negative redundant annotation warning on @ExposedCopyVisibility on data class with public constructor
• KT-67943 Approximation should not generate types with UPPER_BOUND_VIOLATION errors
• KT-67503 K2: False negative "Type Expected" when attempting to annotate a wildcard type argument
• KT-68187 K2: Create IrBuiltins in fir2ir only after IR actualization
• KT-66443 K2: ArrayIterationHandler doesn't work if UIntArray declared in sources
• KT-68291 K2 / Contracts: Non-existent invocation kind is suggested as a fix
• KT-68209 K2: Strange import suggestion when lambda body contains invalid code
• KT-67368 "NullPointerException: Parameter specified as non-null is null" local lambda creates new not-null checks with 2.0.0-Beta5
• KT-51433 FE 1.0: implement warnings about label resolve changes
• KT-66554 K2. Drop FIR based fake-override generator from fir2ir
• KT-64202 K2: Drop old methods for calculation of overridden symbols for lazy declarations
• KT-67895 K2: Properly implement generation of fake-overrides for fields
• KT-54496 K2: REDUNDANT_MODALITY_MODIFIER diagnostic disregards compiler plugins
• KT-63745 K2: Approximation of DNN with nullability warning attribute leads to attribute incorrectly becoming not-null
• KT-63362 AbstractTypeApproximator fixes only first local type in hierarchy
• KT-67769 K2: "variable must be initialized" on unreachable access in constructor
• KT-51195 FIR IC: Incremental compilation fails with @PublishedApi property
• KT-67966 No JVM type annotation is generated on a class supertype
• KT-46640 Generate JVM type annotations on wildcard bounds
• KT-67952 Annotations on type parameters are not generated for parameters other than the first
• KT-68012 K2. No 'operator' modifier is required on 'component' error in K2
• KT-61835 K2: FirStubTypeTransformer receives unresolved expressions in builder inference session
• KT-63596 K1/K2: Different behavior for lambda with different return type
• KT-67688 K2: False positive CANNOT_INFER_PARAMETER_TYPE for Unit constraint type variable
• KT-62080 False positive UNUSED_VARIABLE for variable that is used in lambda and in further code with several conditions
• KT-60726 K2: Missed TYPE_MISMATCH error: inferred type non-suspend function but suspend function was expected
• KT-41835 [FIR] Green code turns to red in presence of smartcasts and redundant type arguments
• KT-67579 K1/JVM: false-negative annotation-based diagnostics on usages of ABI compiled with non-trivially configured generation of default methods
• KT-67493 K2: argument type mismatch: actual type is 'T', but 'T' was expected
• KT-64900 K2: getConstructorKeyword call in PsiRawFirBuilder.toFirConstructor forces AST load
• KT-67648 K2: wrong exposed visibility errors with WRONG_MODIFIER_CONTAINING_DECLARATION on top-level enum class
• KT-58686 FIR2IR: Don't use global counters
• KT-67592 K2: Success execution of :kotlin-stdlib:compileKotlinMetadata
• KT-60398 K2: consider forbidding FirBasedSymbol rebind
• KT-54918 Refactor transformAnonymousFunctionWithExpectedType
• KT-63360 K2: Malformed type mismatch error with functional type
• KT-67266 K2: disappeared INLINE_CLASS_DEPRECATED
• KT-67569 K2: Fix default value parameters of Enum's constructor if it's declared in source code
• KT-67378 K2: Don't use wrapScopeWithJvmMapped for common source sets
• KT-67738 K2: Introduce kotlin.internal.ActualizeByJvmBuiltinProvider annotation
• KT-64456 K2: Port *VersionRequirementTest to K2
• KT-67136 Put $this parameter to LVT for suspend lambdas
• KT-62538 K2: Declarations inside external classes should be implicitly external
• KT-67627 K2: External interface companion isn't external in IR
• KT-60290 K2: origin is not set for !in operator
• KT-67512 K2: false positive WRONG_GETTER_RETURN_TYPE when getter return type is annotated
• KT-67635 K2: No warning TYPE_MISMATCH_WHEN_FLEXIBILITY_CHANGES for SAM constructor with inferred type
• KT-60501 K2 Scripting: investigate metadata difference between K1 and K2
• KT-67598 K2: Fix incorrect casting UByte to Number in FirToConstantValueTransformer
• KT-56564 False positive "non-exhaustive when" in case of intersection type
• KT-63969 K2: extra property in metadata
• KT-63968 K2: extra property in metadata for anonymous variable in script
• KT-67547 K/N can't build caches, fails with "clang++: error=2, No such file or directory"
• KT-67469 K2: Failing module in FP-intellij
• KT-64033 K2: Investigate ForbidInferringPostponedTypeVariableIntoDeclaredUpperBound
• KT-64457 K2: Fix DecompiledKnmStubConsistencyK2TestGenerated
• KT-66377 IR Evaluator: "no container found for type parameter" when evaluating nested generics
• KT-66378 IR Evaluator: Symbol is unbound
• KT-64506 IDE, IR Evaluator: NPE in ReflectiveAccessLowering.fieldLocationAndReceiver when evaluating private static properties
• KT-67380 K2: Don't check for equals overriding for class Any
• KT-67038 K2: Missing type of FirLiteralExpression causes an exception for property initializer type resolution
• KT-59813 K2: Fix the TODO about firEffect.source in FirReturnsImpliesAnalyzer
• KT-59834 K2: Fix the TODO about merge(other) in UnusedChecker
• KT-59188 K2: Change positioning strategy for WRONG_NUMBER_OF_TYPE_ARGUMENTS error
• KT-59108 K2. SMARTCAST_IMPOSSIBLE instead of UNSAFE_IMPLICIT_INVOKE_CALL
• KT-65503 The inline processor cannot handle objects inside the lambda correctly when calling an inline function from another module
• KT-30696 NoSuchMethodError if nested anonymous objects are used with propagation reified type parameter
• KT-58966 Incorrect type inference for parameters with omitted type of anonymous function that is being analyzed as value of function type with receiver
• KT-67458 Use @PhaseDescription for JVM backend lowering phases
• KT-65647 K2 ignores diagnostics on sourceless FirTypeRefs
• KT-64489 K2: Rename FirAugmentedArraySet
• KT-67394 FIR: Make FIR repr of For from PSI and LightTree the same
• KT-66724 K2 IDE. False positive errors because of wrong type inference in complex case of delegated property and type arguments
• KT-40248 Confusing error message NO_RETURN_IN_FUNCTION_WITH_BLOCK_BODY
• KT-66947 K2: false-positive JSpecify nullability enhancement warning on Java wildcard type argument with same base type but different nullabilities as upper and lower bounds
• KT-66974 K2: false-negative JSpecify nullability enhancement warning on nullable projection of Java wildcard type argument with non-null bounds in out-position
• KT-66946 K2: false-negative JSpecify nullability enhancement warning on Java wildcard type argument with nullable upper bound in out-position
• KT-66442 K2: No visibility error on importing private aliases
• KT-66598 K2: Allow comparisons, is-checks and casts between Kotlin and platform types
• KT-55966 K2: Not enough information to infer type variable K if smartcast is used
• KT-64894 OPT_IN_ARGUMENT_IS_NOT_MARKER diagnostic message is unclear
• KT-67019 K2: IR has incorrect EQ origins for some inplace updating operators
• KT-59810 K2: Support other ConstraintPosition-s
• KT-55383 K1/K2: isClassTypeConstructor behaves differently for stub types
• KT-60089 K2: Introduced ERROR_IN_CONTRACT_DESCRIPTION
• KT-60382 K2: Refactor ExpectActualCollector
• KT-62929 K2: investigate if guessArrayTypeIfNeeded is necessary in annotation loader
• KT-65642 K2: IR: Array access desugaring doesn't have origins
• KT-24807 No smartcast to Boolean in subject of when-expression when subject type is non-nullable
• KT-66057 K2: incorrect supertype leads to class declaration being highlighted red
• KT-63958 K2: drop support of UseBuilderInferenceOnlyIfNeeded=false
• KT-63959 K2: treat stub types as non-nullable for isReceiverNullable check
• KT-65100 IrFakeOverrideBuilder: support custom 'remove(Int)' handling logic in MutableCollection subclasses

Compose compiler

New features

• cdfe659 Changed how compiler features being rolled out are enabled and disabled in compiler plugin CLI. Features, such as strong skipping and non-skipping group optimizations are now enabled through the "featureFlag" option instead of their own option.
• 192e556 Strong skipping is now enabled by default
• 842a9e8 Add support for default parameters in abstract and open @Composable functions b/165812010

Fixes

• e207b05 Fixes group generation for if statements when nonSkippingGroupOptimization is enabled b/346821372
• f64fc3a Fixes endToMarker generation in early return from inline lambdas that caused start/end imbalance b/346808602
• d6ac8a5 Stop memoizing lambdas with captured property delegates b/342557697
• f38d5a3 Stop capturing parameter meta across crossinline boundary b/343801379
• 770fe8d Propagate annotations from inferred function types when serializing b/345261077
• 3c67cda Fix memoization of captureless lambdas when K2 compiler is used b/340582180
• 3281e53 Allow memoizing lambdas in composable inline functions b/340606661
• b/351858979 Fix stability inferencing of interfaces on incremental compilation
• b/346821372 [Compose] Fix code generation for group optimization
• b/357878245 Disallow open @Composable functions with default params to fix binary compatibility issues.

IR. Actualizer

• KT-68830 Compiler crash on missing actual class
• KT-69024 K2: Children of expect annotation with @OptionalExpectation should be actualized
• KT-68742 Allow expect protected to Java protected actualization
• KT-66436 K2. Actualizing modCount property with a field in AbstractMutableList
• KT-68741 Support actualization of AbstractMutableList.modCount
• KT-68801 Crash on access of fake override of function actualized by fake override
• KT-66307 K2: property fake override isn't generated for protected field

IR. Inlining

• KT-67208 KJS: put ReplaceSuspendIntrinsicLowering after IR inliner
• KT-68100 Run IR validation in the beginning and the end of the common prefix
• KT-69171 Introduce a temporary -X CLI parameter that enables double-inlining
• KT-69006 Enable IR visibility checks after IR inlining
• KT-69183 IR inlining: properly handle defaults that depends on previous value parameters
• KT-67660 Suspicious package part FQN calculation in InventNamesForLocalClasses
• KT-68558 Move InlineCallableReferenceToLambdaPhase into ir.inline module
• KT-56466 Support non-local break/continue in IR inliner
• KT-64958 KJS: Put as many as possible lowerings after the inliner
• KT-67297 Implement IR deserializer with unbound symbols

IR. Interpreter

• KT-66938 Internal error in file lowering: java.lang.AssertionError: Error occurred while optimizing an expression: CALL 'public final fun less (arg0: kotlin.Int, arg1: kotlin.Int): kotlin.Boolean declared in kotlin.internal.ir'

IR. Tree

Performance Improvements

• KT-67695 ForLoopsLowering fails to handle a loop over an imprecise typed iterable

Fixes

• KT-68784 Support validating visibility of referenced declarations in IrValidator
• KT-68174 Delete the IrMessageLogger interface
• KT-67082 Introduce attributes on IrElement
• KT-68716 DeepCopyIrTreeWithSymbols.visitConst should remap const type
• KT-67650 Add default implementations to methods for non-leaf IrSymbol subclasses from SymbolRemapper
• KT-67649 Autogenerate IrSymbol interface hierarchy
• KT-44721 IR: merge IrPrivateSymbolBase and IrPublicSymbolBase hierarchies
• KT-67580 Autogenerate SymbolRemapper
• KT-67457 Introduce a way to simplify IR lowering phase creation
• KT-67060 NoSuchMethodError for org.jetbrains.kotlin.ir.expressions.impl.IrCompositeImpl in the Flysto

JavaScript

New Features

• KT-69133 Kotlin/JS: Add support for collection instantiation in JavaScript
• KT-18891 JS: provide a way to declare static members (JsStatic?)

Fixes

• KT-68943 @JsPlainObject breaks when interface has type parameters
• KT-70592 "Error: HttpClientCall expected" on HTTP request when targeting es2015 with KTOR
• KT-67273 Creating Kotlin Collections from JS collections
• KT-65018 JS: Deprecate error tolerance
• KT-67355 KJS / ES6: 'super' in lambda with enabled -Xir-generate-inline-anonymous-functions leads to JS errors
• KT-69353 KJS / d.ts: Kotlin does not export base collection classes along with their mutable collection counterparts
• KT-66898 KJS: Reserved keywords not escaped when -Xir-generate-inline-anonymous-functions is enabled
• KT-69710 JS IR generates bad code for inner param default referring to outer members
• KT-68632 K2: allow JS_NAME_CLASH suppression
• KT-69400 Use correct type for references on local functions when transforming them into lambda
• KT-68554 Legalize marker interface as parent for JSO (interface marked with @JsPlainObject)
• KT-68740 Kotlin/JS 2.0.0 IrLinkageError with dynamic function parameters inside data classes
• KT-68944 @JsPlainObject require properties, when type - nullable alias
• KT-68891 @JsPlainObject fails to compile when encountering reserved keywords as interface properties
• KT-69023 KJS / IR: globalThis is mandatory, breaking older browsers support
• KT-68641 KJS: 'export was not found' with per-file mode on case-insensitive filesystem
• KT-68053 K2: NON_EXPORTABLE_TYPE on a typealias of primitive type
• KT-62304 K/JS: Investigate the compiler assertion crash in JS FIR with backend tests
• KT-68620 [wasm][js] Default param in inner class method fails if we are referring generic extension property
• KT-64801 K2 + JS and WASM: Inner with default inner doesn't work properly
• KT-67248 ModuleDescriptor in JS Linker contains incorrect friend dependecies
• KT-64424 K2: Migrate JsProtoComparisonTestGenerated to K2
• KT-52602 Kotlin/JS + IR: incompatible ABI version is not reported when no declarations are actually used by a Gradle compilation
• KT-66092 K/JS & Wasm: .isReified for reified upper bound is wrongly false
• KT-67112 Unable to apply @JsStatic for common sources: [NO_CONSTRUCTOR]
• KT-62329 KJS: "UnsupportedOperationException: Empty collection can't be reduced" caused by external enum with "@JsExport"
• KT-67018 K/JS: Executable js file for module-kind=umd contains top level this instead of globalThis
• KT-64776 Test infra for JS can't process dependency in mpp module
• KT-65076 Use the same instance when a fun interface doesn't capture or capture only singletons

Klibs

• KT-66557 Check, that no bad metadata in klib is produced, when we failed to compute constant value
• KT-66968 Provide K/N platforms libs for all available targets
• KT-66967 Provide K/N stdlib for all available targets in all distributions
• KT-66605 [KLIB] Excessive creation of BaseKotlinLibrary during resolving libs
• KT-68824 API 4 ABI: Don't show sealed class constructors
• KT-68202 KLIB metadata: nested classes are sometimes inside a different 'knm' chunk
• KT-65834 [KLIB Resolve] Drop library versions in KLIB manifests
• KT-67446 [KLIB Tool] Drop "-repository " CLI parameter
• KT-67445 [KLIB Tool] Drop "install" and "remove" commands

Language Design

• KT-58920 K2: Prioritize Enum.entries resolve
• KT-11914 Confusing data class copy with private constructor
• KT-68636 Incorrect private_to_this visibility for data class with a private constructor

Libraries

New Features

• KT-31880 UUID functionality to fix Java bugs as well as extend it
• KT-57998 implement Base64.withoutPadding

Performance Improvements

• KT-67023 Optimize Int.sign and Long.sign for js and wasmJs targets

Fixes

• KT-70196 Introduce ExperimentalUuidApi annotation for marking Uuid API
• KT-60787 Cannot ignore alpha when formatting with HexFormat
• KT-68025 Improve documentation for Hex
• KT-66129 Minor issues with HexFormat
• KT-67511 provide equals() and hashCode() implementations for kotlinx.metadata.KmType
• KT-68240 stdlib: proper expects for internal API used in intermediate shared source sets
• KT-68840 atomicfu-runtime: annotate some internal functions with @PublishedApi
• KT-68839 Annotate kotlin.js.VOID property with @PublishedApi
• KT-68023 Improve documentation for Base64
• KT-51483 Documentation of trimMargin is (partly) difficult to understand
• KT-64649 Add explanation to "A compileOnly dependency is used in the Kotlin/Native target" warning message
• KT-67807 JS/Wasm: ByteArray.decodeToString incorrectly handles ill-formed 4-byte sequences with a 2nd byte not being continuation byte
• KT-67768 Wasm: ByteArray.decodeToString throws out-of-bounds exception if the last byte is a start of a 4-byte sequence
• KT-66896 Improve Array contentEquals and contentDeepEquals documentation

Native

• KT-70166 Native: EXC_BAD_ACCESS on watchOS when using Dispatchers
• KT-69246 K2: linkPodDebugFrameworkIosArm64 takes 15 (!!) times longer
• KT-67694 Native: WeakRefBenchmark degradation due to nonoptimized IntProgression iteration
• KT-69206 Native: updating to LLVM 16 breaks debugging in lldb on Linux
• KT-68640 Native: updating to LLVM 16 changes behavior of used attribute in C/C++ code
• KT-58097 Kotlin/Native: improve the error message if Xcode is not properly configured
• KT-67583 compileKotlin-task unexpectedly downloads K/N dependencies on Linux (but doesn't on Mac)

Native. Build Infrastructure

• KT-69781 Kotlin/Native performance tests fail to compile with bitcode

Native. C and ObjC Import

• KT-69094 LLVM 11 clang: cinterops fail with "_Float16 is not supported on this target"
• KT-68254 Native: flaky testForwardEnum test in Kotlin/Native on MacOS
• KT-65260 Native: compiler crashes when casting to an Obj-C class companion

Native. ObjC Export

• KT-65666 Native: enable objcExportSuspendFunctionLaunchThreadRestriction=none by default
• KT-57496 linkReleaseFrameworkIosArm64: e: Compilation failed: An operation is not implemented

Native. Platform Libraries

• KT-69382 LLVM 11 clang: symbol not found when running the linker

Native. Runtime

• KT-70043 Native: EXC_BAD_ACCESS on watchOS when using Random
• KT-68928 EXC_BREAKPOINT: BUG IN CLIENT OF LIBPLATFORM: Trying to recursively lock an os_unfair_lock

Native. Runtime. Memory

• KT-66644 Native: threads are too often paused to assist GC (with concurrent mark)
• KT-68871 Native: Unexpected barriers phase during STW: weak-processing
• KT-67779 Native: SpecialRefRegistry::ThradData publication prolongs the pause in CMS
• KT-66918 Native: scan global root set concurrently

Native. Swift Export

• KT-69469 Exporting object twice causing crash
• KT-69251 Get rid of context receivers from ./native/.../lazyWithSessions.kt
• KT-68865 Move config into test-directives
• KT-68259 Swift export: secondary constructs lead to compilation errors
• KT-67095 Native: fix testNativeRefs export test
• KT-67099 Remove SirVisitor and SirTransformer from code
• KT-67003 Abandon PackageInflator implementation in favour of PackageProvider component

Native. Testing

• KT-69235 Incorrect handling of friend dependencies in Native test infra
• KT-67436 Native: support CLI tests
• KT-68416 Native: when using test grouping, a whole group gets ignored on non-Mac hosts if it has Objective-C tests
• KT-68500 Native: Drop custom logic in ExtTestCaseGroupProvider, mute codegen/box tests explicitly

Reflection

• KT-69433 KotlinReflectionInternalError on non-reified type parameter in typeOf inside an inline lambda
• KT-68675 K2: KotlinReflectionInternalError on non-reified type parameter in typeOf inside a lambda

Tools. Build Tools API

• KT-68555 BTA test infra: top level declarations are invisible across modules

Tools. CLI

• KT-69792 Add the possibility to disable fast jar fs in K2
• KT-68838 OutOfMemory when compiling in CLI
• KT-67939 Add CLI argument to enable when guards feature
• KT-68743 Extract common CLI arguments for all KLIB-based backends
• KT-68450 CLI: errors related to module-info are reported even if there are no Kotlin source files
• KT-68060 FastJarFS fails on empty jars

Tools. CLI. Native

• KT-66952 Native: konanc fails when KONAN_HOME is under path with spaces
• KT-64524 Introduce a CLI argument to override native_targets field in klib manifest

Tools. Commonizer

• KT-68835 Command line length overflow on Linux/Windows while invoking commonizer via :commonizeDistribution

Tools. Compiler Plugin API

• KT-68020 K2: run FirSupertypeGenerationExtension over generated declarations

Tools. Compiler Plugins

• KT-64425 K2: Implement Atomicfu*IrTestGenerated for K2
• KT-69401 Kotlin power assert plugin doesn't work correctly with safe cast operator
• KT-69290 PowerAssert: implicit receivers included in power-assert generated diagram
• KT-68511 Power Assert kotlinx.assertEquals message display problem
• KT-68807 Power-Assert crashes the Kotlin compiler when if expression used as assertion parameter
• KT-68162 K2 Parcelize implementation breaks compiler phase contracts
• KT-67605 K2 parcelize: false positive NOTHING_TO_OVERRIDE in one test
• KT-64455 K2: Implement ParcelizeIrBoxTestWithSerializableLikeExtension for K2

Tools. Compiler plugins. Serialization

• KT-70516 KxSerialization: @KeepGeneratedSerializer and sealed class cause initialization error
• KT-68752 Serializable annotation on Java class is not taken into account in K2 checker
• KT-68931 JS/Native + serialization: partial linkage error
• KT-69039 FIR: Implement IDE-only checker for kotlinx.serialization compiler plugin to report IDE-only diagnostics

Tools. Fleet. ObjC Export

• KT-68826 ObjCExport: SerializersModuleBuilder
• KT-68841 ObjCExport: @Deprecated support
• KT-68887 ObjCExport: K1 text fixture @Deprecated support
• KT-68051 [ObjCExport] Support reserved method names

Tools. Gradle

New Features

• KT-68651 Compose: provide a single place in extension to configure all compose flags

Performance Improvements

• KT-61861 Gradle: Kotlin compilations depend on packed artifacts

Fixes

• KT-69809 Compose Gradle Plugin: AGP doesn't override configuration properties like traceMarkersEnabled
• KT-65820 Compatibility with Gradle 8.7 release
• KT-69444 Don't warn about missing Compose Compiler Gradle plugin in some cases
• KT-67888 Remove usages of deprecated Configuration.fileCollection() method
• KT-68843 Gradle: Kotlin plugin changes source set 'main' to 'null/main'
• KT-67395 Add new plugins to collector kotlin gradle performance
• KT-68661 Move ExperimentalWasmDsl to kotlin-gradle-plugin-annotations
• KT-69837 Deprecation warning for file-based IC is issued when the property is set to true, altering the intended meaning of the message
• KT-69291 Compose Gradle plugin: Enable strong skipping by default
• KT-67766 Build against Gradle API 8.7
• KT-67889 Run tests against Gradle 8.8 release
• KT-65271 Gradle: "Mutating dependency DefaultExternalModuleDependency after it has been finalized has been deprecated " with gradle 8.6-rc-3
• KT-67822 Deprecate JVM history files based incremental compilation
• KT-64378 Compatibility with Gradle 8.6 release
• KT-69414 Compose: featureFlags override values of the deprecated compose options
• KT-67771 Compatibility with Gradle 8.8 release
• KT-65528 Migrate rest of Gradle integration tests to new Test DSL
• KT-68306 Project isolation for FUS statistics: Cannot access project ':' from project ':app' at org.jetbrains.kotlin.gradle.report.BuildMetricsService$ Companion.initBuildScanExtensionHolder
• KT-67890 Compile against Gradle 8.8 API artifact
• KT-68773 Kotlin 2.0.0 with Gradle 8.8: ConcurrentModificationException on BuildFusService configurationMetrics
• KT-68308 Project isolation for FUS statistics: An error is thrown at org.gradle.configurationcache.ProblemReportingCrossProjectModelAccess$ProblemReportingProject.getLayout
• KT-61574 Add project-isolation test for Kotlin/Android plugin
• KT-65936 Provide a detailed error for changing kotlin native version dependency.
• KT-62684 PropertiesBuildService should load extraProperties only once
• KT-67288 Test DSL should not fail the test if build scan publishing has failed
• KT-58280 org.jetbrains.kotlin.jvm Gradle plugin contributes build directories to the test compile classpath

Tools. Gradle. JS

• KT-70077 [2.0.20-Beta2] KGP reports confusing warnings about js/wasmJS source sets
• KT-69805 YarnSetupTask does not work for custom downloadBaseUrl
• KT-67444 Gradle / JS: wrong type commonWebpackConfig.devServer.proxy
• KT-42923 KJS: Resources are not available when running Karma tests
• KT-68482 KotlinNpmInstallTask is not compatible with configuration cache
• KT-68072 K/JS, K/Wasm: Module not found in transitive case
• KT-68103 K/JS, K/Wasm: Generation of test compilation's package.json requires main compilation
• KT-67924 K/JS, K/Wasm: kotlinNpmInstall can rewrite root package.json

Tools. Gradle. Kapt

• KT-64627 Kapt3KotlinGradleSubplugin uses property lookup that breaks project isolation
• KT-61928 Clarify parameter types in KaptArguments and KaptJavacOption

Tools. Gradle. Multiplatform

New Features

• KT-56566 Consider pre-generating DSL accessors for source sets with names corresponding to the default target hierarchy

Fixes

• KT-66568 w: KLIB resolver: The same 'unique_name=...' found in more than one library
• KT-65754 Gradle: Commonized cinterop dependency configuration changes project description
• KT-69406 Deprecate combinations of KMP plugin with some Gradle Java plugins
• KT-64109 Using compileOnly/runtimeOnly dependencies in K/N-related configurations leads to odd behaviour
• KT-69311 runDebugExecutable task fails with "this.compilation" is null with enabled configuration cache
• KT-69310 w: KLIB resolver: The same 'unique_name=...' found in more than one library for diamond source set structures
• KT-61793 KMP/AGP compatibility: Update the maximum tested AGP version to 8.3
• KT-66209 Accessing the source sets by name is confusing
• KT-62368 Kotlin 1.9.X fails to detect kotlin.test.Test annotation reference on commonTest source set when targeting JVM+Android
• KT-67110 Usage of BuildOperationExecutor.getCurrentOpeartion internal Gradle API
• KT-58319 kotlin.git: ProjectMetadataProviderImpl "Unexpected source set 'commonMain'"

Tools. Gradle. Native

• KT-69918 java.lang.NullPointerException: Cannot invoke "org.jetbrains.kotlin.gradle.plugin.mpp.KotlinNativeCompilation.getTarget()" because "this.compilation" is null
• KT-67935 OverriddenKotlinNativeHomeChecker does not work well with relative paths
• KT-64430 Remove deprecated KotlinToolRunner(project) constructor
• KT-64427 Stop using deprecated KotlinToolRunner(project) constructor call

Tools. Incremental Compile

• KT-69042 K2: changing a Java constant won't cause Kotlin usages to recompile
• KT-63476 Investigate the debug output of JVM compilation in KMP IC smoke tests

Tools. JPS

• KT-63707 JPS: "Multiple values are not allowed for" caused by Compose

Tools. Kapt

• KT-68145 K2 KAPT: missing $annotations methods for const properties and private properties without accessors
• KT-67495 File leak in when building with kapt
• KT-66780 K2 KAPT Kotlinc should exit with an exit code 1 (compilation error) if a Kapt task fails
• KT-66998 K2 KAPT: Reimplement support for DefaultImpls

Tools. Scripts

• KT-69296 scripting dependency resolution does not authenticate towards maven mirrors
• KT-67575 FromConfigurationsBase script definition unexpected behaviour with regex from gradle templates
• KT-67066 DeepCopyIrTreeWithSymbols does not copy IrScript nodes correctly
• KT-67071 K2: ScriptCompilationConfigurationFromDefinition is not serializable
• KT-67063 LauncherReplTest flaky on Windows

Tools. Wasm

• KT-70220 K/Wasm: Upgrade NPM dependencies
• KT-69245 K/Wasm: Remove warning of working-in-progress
• KT-69154 K/Wasm: wasmJsBrowserProductionRun flaky crash with "WebAssembly.instantiate(): Import ... function import requires a callable"
• KT-68930 K/Wasm: Production run doesn not use optimize task result
• KT-67901 K/Wasm: Add kotlin-wasm-examples to CI
• KT-67468 Gradle task build (allTests) fails on default web project
• KT-67980 Wasm: Incorrect "Please choose a JavaScript environment to build distributions and run tests" when WASM is not configured
• KT-67862 K/Wasm: Make usage of ChromeWasmGc an error

2.0.10

Apple Ecosystem

• KT-68257 Xcode incorrectly reuses embedAndSign framework when moving to and from 2.0.0

Compiler

Fixes

• KT-69876 K2 Compile exception: Only IrBlockBody together with kotlinx serialization
• KT-68521 K2: Property's private setters can be bypassed when using plusAssign and minusAssign operators
• KT-68667 K2: Compiler hangs on mapNotNull and elvis inside lambda
• KT-68747 K2: Long compilation time because of constraint solving when using typealias in different modules
• KT-68940 K2: "IllegalArgumentException: All variables should be fixed to something"
• KT-68797 K2 / Native: "java.lang.IllegalStateException: FIELD" caused by enabled caching
• KT-68362 False-positive ABSTRACT_MEMBER_NOT_IMPLEMENTED for inheritor of java class which directly implements java.util.Map
• KT-68449 K2: "when" expression returns Unit
• KT-67072 K2: inconsistent stability of open vals on receivers of final type
• KT-68570 K2: "Unresolved reference" in call with lambda argument and nested lambda argument
• KT-69159 K2: KotlinNothingValueException in Exposed
• KT-68623 K2: "Only safe or null-asserted calls are allowed" on safe call
• KT-68193 JDK 21: new MutableList.addFirst/addLast methods allow adding nullable value for non-null types
• KT-67804 removeFirst and removeLast return type with Java 21
• KT-68727 K2: "Null argument in ExpressionCodegen for parameter VALUE_PARAMETER" caused by an enum class with default parameter in a different module
• KT-68383 K2: "Argument type mismatch: actual type is 'kotlin.String', but 'T & Any' was expected." with intersection types
• KT-68546 K2: false-positive conflicting overloads error on inheriting generic type with inherited generic and non-generic member overloads
• KT-68626 K2: "Conflicting Overloads" for function if inherited from generic type
• KT-68351 K2: "Suspension functions can only be called within coroutine body"
• KT-68489 K2: WRONG_ANNOTATION_TARGET with Java and Kotlin @Target annotation positions
• KT-69058 K2: Java-defined property annotations not persisted
• KT-64515 K2 IDE: [NEW_INFERENCE_ERROR] in a build.gradle.kts script while applying "jvm-test-suite" plugin and then configuring targets for test suites
• KT-68016 K2: Gradle repo test should compile correctly with Kotlin explicit api mode fails on K2
• KT-68575 K2: @ParameterName annotation is not erased when inferring the type of it in lambdas
• KT-67999 K2: lost flexibility on parameters of Java SAM
• KT-59679 K2: Investigate extracting uncompleted candidates from blocks
• KT-68401 K2: "IllegalAccessError: failed to access class" caused by package private super Java type, when inferencing a common super type of if or when branches on JVM
• KT-68806 K/Wasm RuntimeError: unreachable on Sequence::toList
• KT-68455 K2: False negative UPPER_BOUND_VIOLATED_BASED_ON_JAVA_ANNOTATIONS
• KT-68538 KJS/K2: using while with break inside inline lambdas leads to an endless cycle
• KT-68798 JVM compiler crashes on calling private expect constructor with a default parameter
• KT-68734 K2: enum class in KMP: Expect declaration MMKVLogLevel is incompatible with actual MMKVLogLevel because modality is different
• KT-68674 False positive ACTUAL_WITHOUT_EXPECT in K2
• KT-68350 K2: "Inapplicable candidate(s)" caused by parameter reference of local class with type parameters from function
• KT-68571 K2: "IllegalStateException: Fake override should have at least one overridden descriptor" caused by exceptions and when statement
• KT-68523 K2: FileAnalysisException when using Definitely non-nullable types
• KT-68339 K2: "Enum entry * is uninitialized here" caused by lazy property with enum in when expression
• KT-66688 K2: false-negative "upper bound violated" error in extension receiver
• KT-68630 DiagnosticsSuppressor is not invoked with Kotlin 2.0
• KT-68222 K2. KMP. False negative Expected declaration must not have a body for expected top-level property with getter/setter
• KT-64103 FirExpectActualDeclarationChecker reports diagnostic error for KtPsiSimpleDiagnostic with KtFakeSourceElement
• KT-68191 K2. Static fake-overrides are not generated for kotlin Fir2IrLazyClass
• KT-68024 K2: Gradle repo test accessors to kotlin internal task types... fails on K2
• KT-64957 K1: drop ModuleAnnotationResolver

Compose compiler

• 0c5a858 Fix memoization of captureless lambdas when K2 compiler is used b/340582180
• a8249d6 Allow memoizing lambdas in composable inline functions b/340606661

Native

• KT-68094 K2/Native: Member inherits different '@Throws' when inheriting from generic type

Tools. Compiler Plugins

• KT-69187 Compose compiler for web doesn't support rememberComposableLambda
• KT-68557 K2. Supertypes resolution of KJK hierarchy fails in presence of allopen plugin

Tools. Compiler plugins. Serialization

• KT-68850 Compose lambda type not transformed with KGP 2 + new Compose plugin

Tools. Daemon

• KT-68297 KGP 2.0 regression: JAVA_TOOL_OPTIONS is not considered in Kotlin daemon creation

Tools. Gradle

• KT-69330 KotlinCompile friendPathsSet property is racy due causing build cache invalidation
• KT-69026 Mark AGP 8.5.0 as compatible with KGP
• KT-68447 ill-added intentionally-broken dependency source configurations
• KT-69078 Gradle: Add option to disable FUS Service
• KT-68278 Spring resource loading in combination with java-test-fixtures plugin broken
• KT-66452 Gradle produces false positive configuration cache problem for Project usage at execution time
• KT-68242 Run tests against AGP 8.4.0

Tools. Gradle. Multiplatform

• KT-68805 KMP project (re-)import took a long time for downloading platform libs
• KT-68248 kotlin multiplatform project fail to build on Fedora with corretto

Tools. Gradle. Native

• KT-68638 KGP 2.0 breaks native test with api dependencies and configuration cache
• KT-65761 Missing JDK Platform ClassLoader when compiling Kotlin native in daemon

Tools. JPS

• KT-69204 Generate lookups in dumb mode for compatibility with ref index

Tools. Kapt

• KT-68171 K2KAPT: boxed return types in overridden methods changed to primitives

Tools. Scripts

• KT-68681 K2 / CLI / Script: "NullPointerException: getService(...) must not be null" caused by @DependsOn
• KT-67747 K2: regression in Spring unit tests using javax.script.ScriptEngine

2.0.0

Analysis. API

New Features

• KT-65327 Support reading klib contents in Analysis API

Performance Improvements

• KT-65560 K2: Anaysis API: ContextCollector triggers redundant resolution in the case of file elements
• KT-64987 Analysis API: 50GB memory allocation on creating empty kotlinx.collections.immutable.persistentMapOf
• KT-61789 K2: optimize getFirForNonKtFileElement for references inside super type reference
• KT-59498 K2: getOnAirGetTowerContextProvider took too much time due to on air resolve
• KT-61728 Analysis API: optimize AllCandidatesResolver.getAllCandidates

Fixes

• KT-65561 Analysis API: dummy.kt is not a physical file
• KT-65616 K2: FirDeclarationStatusImpl cannot be cast to FirResolvedDeclarationStatus from STATUS
• KT-65600 Analysis Api: FirFile for KtCodeFragments are created and not updated on changes
• KT-64919 K2 IDE: Implement KMP support for sealed class inheritors
• KT-64241 K2: Unresolved calls to functions in scripts depending on included projects
• KT-65813 Analysis API Standalone: FirDeclarationForCompiledElementSearcher does not find compiled elements
• KT-66052 AA: render expect/actual modifier
• KT-66795 KtCodeFragment.clone() is broken
• KT-66532 K2 CodeGen AA: missing annotation setup for function in source module but not in a compile target file
• KT-64833 Analysis API: Members implemented by delegation have no overridden symbols
• KT-62405 Analysis API: Symbols SUBSTITUTION_OVERRIDE have no overridden symbols
• KT-66749 K2: "Collection contains no element matching the predicate" on an unresolved call
• KT-62832 K2: ClassCastException: FirDeclarationStatusImpl cannot be cast to FirResolvedDeclarationStatus
• KT-66719 AbstractGetKlibSourceFileNameTest: The dependency to ":native:analysis-api-klib-reader" breaks JPS compilation
• KT-66603 Analysis API: support type annotations in KtPsiTypeProviderMixIn#asPsiType
• KT-64505 Analysis API Standalone: Remove test-specific calculation of sealed class inheritors
• KT-66013 Analysis API Standalone: Sealed inheritors aren't correctly calculated for source classes
• KT-62880 K2 IDE: Unresolved java annotation methods in KDoc
• KT-66530 K2: Analysis API: KtPsiTypeProvider#asKtType crashes on PsiClassType for Java type parameter with wrong use site
• KT-65571 Support VirtualFile inputs to Analysis API modules
• KT-66485 Substituted types are not provided for callable references
• KT-66498 Analysis API: 'KtFe10SymbolDeclarationOverridesProvider' considers a class to be a subclass of itself
• KT-64579 K2 IDE: "Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirValueParameterImpl(Source) but FirArgumentListImpl found"
• KT-65978 Analysis API: Use soft references in FileStructureCache
• KT-64051 K2 IDE: Analysis API: Unresolved links to typealias in KDoc
• KT-66189 K2 / IDE: KtFirExpressionTypeProvider bugs
• KT-61422 K2 IDE: "No array element type for vararg value parameter: org.jetbrains.kotlin.fir.declarations.impl.FirValueParameterImpl"
• KT-66276 K2: Analysis API: TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM false positive for script parameter
• KT-66232 K2: Analysis API: cover ScriptWithCustomDefDiagnosticsTestBaseGenerated by LL FIR tests
• KT-60996 K2: Stub Based Deserializer: Set versionRequirements to enable VERSION_REQUIREMENT_DEPRECATION diagnostics
• KT-66306 K2: Analysis API: drop ability to enable global phase resolve lock
• KT-55750 LL FIR: Implement multi-threaded resolve
• KT-65563 Analysis API: Missing session component FirExpectActualMatchingContextFactory in LLFirLibrarySession
• KT-66173 K2: No 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter' in array owner: LLFirLibrarySession
• KT-66238 Gradle kotlin build scripts - a lot of unresolved symbols after latest changes in kotlin master
• KT-65099 K2: Recursive local storage cache check for Fir2IrDeclarationStorage::createAndCacheIrPropertySymbols()
• KT-65265 Analysis API: Add library session invalidation tests
• KT-56288 Analysis API: Add tests for session invalidation on the Analysis API side
• KT-64000 K2: make AnnotationArgumentsStateKeepers more accurate
• KT-63606 K2: Analysis API: rewrite FirLazyAnnotationTransformer to avoid redundant transformations
• KT-65191 KtFirMultiplatformInfoProvider#getExpectForActual doesn't return expect function for slightly broken code
• KT-62136 Analysis API: Add concurrent tests for CleanableSoftValueCache
• KT-61222 K2: Add lifecycle management for KtResolveExtension
• KT-65960 Analysis API: Test infrastructure indexes binary libraries from decompiled files instead of stubs during IDE mode tests
• KT-65240 K2: CodeGen API fails to resolve Annotation parameter type when it runs FIR2IR for a class with a parent class from other module if the parent class has an annotation from another module
• KT-65344 K2: make FirScript statements (declarations) independent
• KT-65930 AA: receiver type for Int?::foo misses nullability
• KT-65914 AA: receiver type for this::foo returns return type of the target callable
• KT-62071 Analysis API: KtFirScopeProvider.getScopeContextForPosition throws exception when ImplicitReceiverValue.implicitScope is null
• KT-65780 K2: polish FileStructure implementation for FirFile
• KT-62840 K2 Script: everything around destructuring declaration on top level of scripts are broken
• KT-64528 K2 IDE: MPP: unregistered component 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter'
• KT-64921 K2 IDE: references in platform code resolve to expect classifier instead of actual
• KT-61296 K2: do not resolve the entire file on lazyResolve call if FirFile is passed
• KT-65683 Analysis API: Dangling file session creation causes a computeIfAbsent contract violation
• KT-64884 K2 IDE. FP [NAMED_PARAMETER_NOT_FOUND] for copy method of library data class when class has not parameter-properties
• KT-65763 K2: value parameter from library data class copy have RAW_FIR phase
• KT-65665 Analysis API: support KtDelegatedSuperTypeEntry in KtFirExpressionInfoProvider.isUsedAsExpression
• KT-62899 K2 IDE. IDE ignores @Suppress annotation for errors
• KT-65655 Analysis API: KtCodeCompilationException should not strongly reference FIR sessions
• KT-62302 Support PsiType -> KtType conversion
• KT-64604 K2: IDE K2: "Modules are inconsistent during performance tests"
• KT-65345 K2: unify FirDesignation and LLFirResolveTarget
• KT-61757 K2 IDE: resolution to buitlins does not work for from common module
• KT-65268 K2: Checking the presence of the delegated constructor call forces AST loading
• KT-63330 Analysis API: Stub-based deserialized symbol providers provide unresolved enum entry annotation arguments
• KT-65418 Analysis API: LLFirAbstractSessionFactory loads anchor module sessions eagerly
• KT-64718 Analysis API: do not expose SealedClassInheritorsProvider and FirRegularClass to IDE Plugin
• KT-65075 K2: getContainingDeclaration() is broken for declarations inside code fragments
• KT-61332 Support KtTypeCodeFragment in PsiRawFirBuilder
• KT-65150 AA: incorrect result from KtTypeProvider#getReceiverTypeForDoubleColonExpression for Java static method
• KT-56551 LL FIR: implement parallel resolve for jumping phases
• KT-65223 Psi: avoid KtFile usages
• KT-65307 Analysis API FE10: support KtFe10AnalysisSessionProvider.getAnalysisSessionByUseSiteKtModule
• KT-62695 K2 IDE: Unresolved extension functions in KDoc
• KT-65152 Analysis API: KDoc references to packages are not fully resolved
• KT-64988 K2 IDE: Navigation from the named argument in safe call does not work
• KT-63195 AA: incorrect results from KtTypeProvider#getReceiverTypeForDoubleColonExpression
• KT-64074 K2: Investigate LL divergence for Script.testTopLevelPropertyInitialization
• KT-62441 K2: IDE K2: "No dangling modifier found"
• KT-62895 K2 IDE. FP 'when' expression must be exhaustive with sealed interface from library
• KT-64993 Analysis API: KtExpressionTypeProvider.getExpectedType works incorrectly for arguments of safe calls
• KT-64883 Allow direct creation of KtCommonFile
• KT-64646 K2: properly forbid ast loading during raw fir phase in tests
• KT-64862 Psi: missed parenthesis in type reference presentation
• KT-62893 K2 IDE. FP 'when' expression must be exhaustive with Java sealed interface from library
• KT-63795 K2: lazyResolveToPhase(BODY_RESOLVE) cannot be called from a transformer with a phase BODY_RESOLVE from SealedClassInheritorsProviderIdeImpl
• KT-64805 Analysis API: introduce common entry point for multi-file test cases
• KT-64714 K2: Analysis API: CollectionsKt.map doesn't resolves from Java in kotlin repo
• KT-64647 K2: Allow to calculate decompiled inheritors for sealed classes in tests
• KT-64595 AA: stackoverflow while simplifying a type with a recursive type parameter
• KT-64825 Analysis API. Cannot compute containing PSI for unknown source kind 'org.jetbrains.kotlin.KtFakeSourceElementKind$DefaultAccessor' exception on getContainingSymbol call for default setter parameter
• KT-64080 K2: Analysis API: On-air resolve does not trigger resolution of delegated super call arguments
• KT-64243 K2: proper lazy resolution for fake overrides
• KT-62891 K2 IDE. FP [EXPOSED_FUNCTION_RETURN_TYPE] on overriding library method which returns protected type
• KT-62667 K2: Cannot find enclosing declaration for KtNameReferenceExpression (on-air, imports)
• KT-61890 Analysis API: Migrate KtFirScopeProvider to ContextCollector instead of onAirResolve
• KT-64197 K2: Code fragments are only supported in JVM
• KT-62357 K2 IDE. False positive on generated component methods and false negative on getter of @JvmRecord classes in Java
• KT-62892 K2 IDE. Java outer class from other module is not resolved when nested class is accessed with fq name in a type position
• KT-62888 K2 IDE. IDE infers reference to KMutableProperty as reference to just KProperty
• KT-64584 K2: StubBasedFirDeserializedSymbolProvider: support deserialization of delegated declarations
• KT-60324 K2 IDE: "NoSuchElementException: List is empty at JavaOverrideChecker#buildErasure"
• KT-62896 K2 IDE. FP ABSTRACT_MEMBER_NOT_IMPLEMENTED on inheriting class from library which implements interface by delegation
• KT-62947 Analysis API: Error while resolving FirPropertyImpl
• KT-64468 Analysis API: Implement mixed multi-module tests which support different kinds of KtModules
• KT-56541 Symbol Light Classes: No @NotNull annotations are generated for accessors of lateinit properties of unresolved types
• KT-63547 K2 IDE. False Positive AMBIGUOUS_ANNOTATION_ARGUMENT
• KT-64205 Analysis API: Do not import non-top-level callables by default
• KT-63056 K2: Cannot mutate an immutable ImplicitReceiverValue on FirCodeFragment analysis
• KT-64108 K2: KtFirSymbolDeclarationOverridesProvider shouldn't provide fake overrides
• KT-63752 K2: java.lang.StackOverflowError FirFieldSymbol.getHasInitializer
• KT-63718 Analysis API: Stub-based dependency symbol providers of library source sessions compute the wrong package name sets
• KT-64225 K2: IDE K2: "FirLazyBlock should be calculated before accessing" in evaluate debuger completion
• KT-64186 Analysis API: ContextCollector provides incorrect scopes for anonymous objects
• KT-63979 K2 IDE: presentation of types in completion is too verbose
• KT-63681 K2: LL FIR: Improve isResolved check coverage of after lazy resolution
• KT-62982 K2: Cannot get a PSI element for 'Enum.values'
• KT-59732 FirLazyResolveContractViolationException: lazyResolveToPhase(IMPORTS) cannot be called from a transformer with a phase IMPORTS from serialisation plugin
• KT-62676 K2 IDE: Reference shortener does not recoginize redundant this references
• KT-63627 K2 IDE: shorten reference shortens required qualifier
• KT-62675 K2 IDE: Reference shortener does not recoginize redundant labels
• KT-60957 K2: Analysis API: Reference shortener does not work correctly with invoke function calls on properties
• KT-63771 fe10: KtNamedClassOrObjectSymbol#isInline does not cover value classes
• KT-60327 K2 IDE. "IllegalArgumentException: source must not be null" during delegation declaration
• KT-62421 K2: IDE K2: "lazyResolveToPhase(BODY_RESOLVE) cannot be called from a transformer with a phase BODY_RESOLVE."
• KT-62587 K2 IDE. FP unresolved reference on accessing nested class in annotation argument
• KT-63700 K2: "FirLazyExpression should be calculated before accessing" in the case of secondary constructor
• KT-61383 K2: 'KtCompilerFacility' fails on code fragment compilation in library sources with duplicated dependencies
• KT-62111 K2 IDE. IllegalArgumentException on for loop with iterator declaration attempt
• KT-63538 Analysis API: Removing a contract statement via PsiElement.delete() does not trigger an out-of-block modification
• KT-63694 K1/K2 IDE. "RuntimeException: Broken stub format, most likely version of kotlin.FILE (kotlin.FILE) was not updated after serialization changes" exception on incorrect class name
• KT-63660 K2: expect-actual gutter icons must be shown when declarations are matched but incompatible
• KT-63560 Analysis API: Modifiable PSI tests cannot rely on the cached application environment to allow write access
• KT-62980 Implement KtFirSimpleNameReference#getImportAlias
• KT-63130 Analysis API: No receiver found for broken code during commit document
• KT-62705 K2: "lazyResolveToPhase(IMPORTS) cannot be called..." from light classes
• KT-60170 K2 IDE: CCE from KtFirCallResolver on invalid code with wrong implicit invoke
• KT-61783 K2: Analyze 'KtCodeFragment' in a separate session
• KT-62010 K2: IDE K2: "ConeClassLikeTypeImpl is not resolved to symbol for on-error type"
• KT-62957 Analysis API: NullPointerException on call resolution when builtins are not available
• KT-61252 K2: IDE K2: "By now the annotations argument mapping should have been resolved"
• KT-62935 Analysis API: kotlin.Cloneable should not be available in Kotlin/Native sources
• KT-62910 Analysis API: create AbstractFirPsiNativeDiagnosticsTest for LL FIR
• KT-63096 K2: Analysis API: KotlinAnnotationsResolver for IDE is created with incorrect scope
• KT-62310 K2 IDE. False positives errors with external annotations
• KT-63282 K2 Script: annotation arguments phase should resolve propagated annotations
• KT-62397 K2 IDE. FP Error in the editor on RequiresOptIn annotation from the lib despite the warning level
• KT-63223 Analysis API: reference to declarations with kotlin* package are not resolved
• KT-62626 IllegalStateException: Cannot build symbol for class org.jetbrains.kotlin.psi.KtScriptInitializer
• KT-62693 K2: IDE K2: "PSI should present for declaration built by Kotlin code"
• KT-62674 K2: "Scope for type ConeClassLikeTypeImpl" is null from transitive dependencies
• KT-61889 Analysis API: Migrate KtFirReferenceShortener to ContextCollector instead of FirResolveContextCollector
• KT-62772 Analysis API: No 'org.jetbrains.kotlin.fir.java.FirSyntheticPropertiesStorage'(31) in array owner: LLFirSourcesSession when analysing builtins in a context of common code
• KT-60319 K2 IDE: "Stability for initialized variable always should be computable"
• KT-62859 K2 IDE: "Evaluate expression" throws exception when calling "Any?.toString()"
• KT-63058 K2 IDE: Code completion unexpectedly imports static/companion object method
• KT-62588 getExpectedType should not calculate type of the expression
• KT-61990 K2: Unexpected returnTypeRef for FirSyntheticProperty
• KT-62625 K2: 'FirLazyExpression should be calculated before accessing' for unresolved super type
• KT-62691 K2: optimize getFirForNonKtFileElement for references inside 'where'
• KT-62834 K2: missing file node level in control flow builder
• KT-62768 Analysis API: No 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter'(44) in array owner: LLFirSourcesSession exception on analysing common code
• KT-62874 K2: FirLazyExpression should be calculated before accessing
• KT-62407 Analysis API: resolve [this] in KDoc to extension receiver
• KT-61204 K2: "FirLazyExpression should be calculated before accessing in ktor HttpBinApplication"
• KT-61901 Analysis API: Declared member scopes for Java classes are missing static members
• KT-61800 Analysis API: Provide separate declared member scopes for non-static and static callables
• KT-61255 Analysis API: Get rid of valueOf, values and entries from a declared member scope
• KT-62466 Expected type for functional expression should include inferred types
• KT-61203 IDE K2: "Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirRegularClassImpl(Source) but FirArgumentListImpl found"
• KT-61791 Analysis API: Implement combined getPackage for combined Kotlin symbol providers
• KT-62437 K2 IDE. Resolution does not work inside lambda expression in constructor argument in supertypes
• KT-62244 K2: Analysis API Standalone: Resolving klib dependencies from binary roots terminates application
• KT-62897 K2 IDE. Unresolved declarations from libraries which are doubled in intellij project libraries
• KT-61615 K2: No 'org.jetbrains.kotlin.fir.analysis.js.checkers.FirJsModuleKind' in array owner: LLFirSourcesSession
• KT-59334 K2: LLFirImplicitTypesLazyResolver problems
• KT-62038 K2: Nested classes are missing in symbol light class structure tests for libraries
• KT-61788 Analysis API: Symbol for FirAnonymousInitializer cannot be null
• KT-62139 Analysis API: KtFe10AnalysisSession.createContextDependentCopy does not need validity check
• KT-62090 Analysis API: introduce an API to get a substitution formed by class inheritance
• KT-62268 K2 IDE. No autocompletion and IllegalStateException for Pair
• KT-60325 K2 IDE. "IllegalArgumentException: source must not be null" on throw usage attempt
• KT-61431 K2: KtPropertyAccessorSymbolPointer pointer already disposed for $$result script property
• KT-58490 K2: LLFirTypeLazyResolver problems
• KT-58494 K2: LLFirAnnotationArgumentsLazyResolver problems
• KT-58492 K2: LLFirBodyLazyResolver problems
• KT-58769 K2: LL FIR: implement platform-dependent session factories
• KT-60343 K2 IDE. IllegalArgumentException on passing incorrect type parameter to function
• KT-61842 K2: reduce number of "in-block modification" events
• KT-62012 K2: "KtReadActionConfinementLifetimeToken is inaccessible: Called outside analyse method"
• KT-61371 K2: Analysis API standalone: register compiler symbol provider for libraries in standalone mode
• KT-60611 K2: reduce number of "in-block modification" events
• KT-61425 Analysis API: Provide a way to get a declared member scope for an enum entry's initializing anonymous object
• KT-61405 Analysis API: An enum entry should not be a KtSymbolWithMembers
• KT-55504 AA: remove dependency on :compiler:cli from standalone AA
• KT-60904 K2: IDE K2: "For DESTRUCTURING_DECLARATION_ENTRY with text _, one of element types expected, but FirValueParameterSymbol found"
• KT-61260 K2 Scripts: Containing function should be not null for KtParameter
• KT-61568 FIR Analysis API: collectCallCandidates gives presence to the top level functions in the presence of more suitable overrides
• KT-60610 K2 IDE: move "out of block" processing logic into LL FIR
• KT-61597 Analysis API: KotlinIllegalStateExceptionWithAttachments: expected as maximum one expect for the actual on errorneous code with multiple expects
• KT-59793 K2: class org.jetbrains.kotlin.fir.declarations.impl.FirErrorImportImpl cannot be cast to class org.jetbrains.kotlin.fir.declarations.FirResolvedImport
• KT-61599 K2: ContextCollector: Support smart cast collection
• KT-61689 Analysis API: ContextCollector provides incorrect context in scripts
• KT-61683 Analysis API: resolve ambiguities in kotlin project
• KT-61245 Analysis API: ContextCollector provides incorrect context for supertype constructor calls
• KT-60384 K2: Opening @JvmName source in IDEA: NPE at PsiRawFirBuilder$Visitor.toFirConstructor()
• KT-60918 K2 IDE: "FirDeclaration was not found for class org.jetbrains.kotlin.psi.KtDestructuringDeclarationEntry, fir is null"
• KT-61013 K2 Scripts: LLFirReturnTypeCalculatorWithJump: No designation of local declaration
• KT-59517 K2 IDE: KotlinExceptionWithAttachments: Modules are inconsistent
• KT-61331 K2: add cache restoring in case of existing context
• KT-61408 K2: IDE K2: "Inconsistency in the cache. Someone without context put a null value in the cache"

Analysis. Light Classes

Performance Improvements

• KT-63486 SLC: a lot of RAM is allocated in org.jetbrains.kotlin.asJava.LightClassUtil.isMangled

Fixes

• KT-66692 SLC: findAttributeValue for attribute w/ default value in Java returns null
• KT-61734 SLC: wildcard suppression not honored
• KT-65112 Symbol Light Classes don't support annotations on type parameters
• KT-65843 K2: Light method returns kotlin.Unit type for TestResult return type
• KT-65653 SLC: wrong binary resolution to function with value class
• KT-65393 SLC: missing deprecated-hidden property
• KT-64772 SLC: presence of source PSI for compiler-generated declaration
• KT-65425 K2 IDE: Seeing a reference to the class generated by compiler plugin exposed from Java code caused NPE from light classes
• KT-64937 SLC: internal setters are not mangled
• KT-63949 K2 IDE. Analyze hang on @Autowired constructor analysis
• KT-63087 K2 IDE: in .java source reference to JvmName names on unsigned type / value class are unresolved
• KT-64605 K2 IDE: usage of @Repeatable annotation in Java: false positive "Duplicate annotation"
• KT-64795 SLC: distinguish last v.s. non-last vararg value parameter type during binary resolution
• KT-61605 K2 IDE: Light elements do not obey platform contracts
• KT-57536 SLC: no need to populate members with expect modifier
• KT-64320 Decouple kotlin psi from java PSI
• KT-64282 Decouple KotlinIconProviderService from java PSI
• KT-63552 Symbol Light Classes don't support arrayOf and similar without parameters in property initializers and default parameter values

Apple Ecosystem

• KT-64096 Diagnostic when embedAndSign used for framework with cocoapods-dependencies
• KT-63821 Copy framework to BUILT_PRODUCTS_DIR in the embedAndSign task
• KT-67892 KotlinNativeLink task instantiates with a fixed list of apiFiles
• KT-66446 Diagnostic never showed, and build fails when CocoaPods dependency is used with embedAndSign task and linking type is dynamic
• KT-66445 Diagnostic never showed when CocoaPods dependency is used with embedAndSign task and linking type is static
• KT-62373 "Xcode higher than tested" diagnostic
• KT-63212 podInstall task fails without a proper diagnostic when xcodeproj gem is outdated

Backend. Native. Debug

• KT-65553 K2: Native: kt42208WithPassingLambdaToAnotherFunction test fails with K2
• KT-57365 [Native] Incorrect debug info on inline function call site

Backend. Wasm

New Features

• KT-65009 Generate TypeScript definitions for the @JsExport declarations in K/Wasm
• KT-58088 [PL] Support & enable partial linkage for Wasm
• KT-66327 Include information about particular Wasm target into KLib manifest

Fixes

• KT-66465 WASM support doesn't appear to be able to see some common declarations
• KT-66905 K/Wasm: support new version of exception handling proposal
• KT-66515 Wasm: "call param types must match" during the build
• KT-67435 K/Wasm: import.meta.url transforming into absolute local path in webpack
• KT-65777 Implement named export for Kotlin/Wasm
• KT-65660 [WasmJs] Support catching JS exceptions
• KT-65824 Wasm: Allow unsigned primitives to be used inside functions annotated with @JsExport
• KT-66103 Wasm: companion object is not initialized in test initializers1.kt
• KT-66471 Null method reference with Kotlin/Wasm on 2.0.0-Beta4
• KT-65210 K/Wasm ::class operator produces Number KClass for Short expression
• KT-66065 [Wasm] Make specialisations for closured primitive values
• KT-64890 K/Wasm compiler crash with external class and Kodein
• KT-66104 Wasm: compiler crash: NoSuchElementException: Sequence contains no element matching the predicate
• KT-65778 Create the same TypeScript tests infrastructure for Kotlin/Wasm that we have now for Kotlin/JS
• KT-65411 Kotlin/Wasm: Boolean boxed instances are not the same
• KT-65713 Kotlin/Wasm generates a wrapper that cannot run in Deno
• KT-63939 Kotlin/Wasm Support lazy associated object initialisation
• KT-61888 [Kotlin/wasm] in kotlin.test support for @AfterTest for async tests
• KT-64803 K/Wasm: non-capturing lambdas are not singleton unlike same lambdas in jvm
• KT-64449 K2: Implement K1WasmWasiCodegenBoxTestGenerated for K2
• KT-64829 K/Wasm: division remainder has a wrong sign
• KT-58852 WASM: two methods with different varargs: Class korlibs.template.dynamic.DynamicShape has 2 methods with the same signature [register(kotlin.Array)
• KT-61263 K/Wasm: add a way to turn on k2 in wasm examples using Compose
• KT-62863 Execution failed for task ':kotlinx-serialization-properties:wasmJsD8Test' in serialization in the K2 QG
• KT-62657 K/Wasm: switch to json repots for Kotlin Wasm Benchmarks
• KT-62147 [Kotlin/Wasm] Nothing typed when expression cause a backend error
• KT-61958 Update SpiderMonkey and return its usage in box tests when they switch to the final opcodes for GC and FTR proposals
• KT-60828 K/Wasm: return br_on_cast_fail usages
• KT-59084 WASM: "RuntimeError: illegal cast" caused by inline class and JsAny
• KT-60700 [WASM] test FirWasmCodegenBoxTestGenerated.testSuspendUnitConversion failed after KT-60259

Compiler

New Features

• KT-24664 No smartcast on stable property if receiver had non-null assertion
• KT-45375 Generate all Kotlin lambdas via invokedynamic + LambdaMetafactory by default
• KT-23915 Add smart cast to non-nullable type after elvis operator
• KT-61077 Support provideDelegate inference from var property type
• KT-59688 K2: consider removing smartcasts only from the only visibile property with specific name, not from all of them
• KT-7389 Intersection type for type parameter with multiple upper bounds in star projection
• KT-63477 Consider supporting builder-style type inference from Unit coercion of last statements in lambdas
• KT-61907 K2: builder inference works with assignments to member properties
• KT-61909 K2: builder inference infers correct types from assignments to extension properties
• KT-59551 K2: builder inference works with anonymous functions if builder parameter has a receiver with a postponed type variable
• KT-65443 [K/N] Implement header caches
• KT-4113 Smart casts for properties to not-null functional types at invoke calls
• KT-65681 K2: Improve error message of UPPER_BOUND_VIOLATED when upper bound is a captured type or other non-denotable type
• KT-32754 Choose existing extensions over additional built-ins members from JDK except overrides
• KT-57800 Support synthetic properties on super receiver
• KT-64350 K2: deprecate using typealias as a callable qualifier in imports
• KT-26565 Choose existing extensions over additional built-ins members from JDK
• KT-65478 JVM: Change inlined variable naming format
• KT-64702 Upper bound of type parameter is ignored when capturing of in-projection appears in out position
• KT-60274 K2: builder inference works through a delegated local variable inside builder argument
• KT-65859 Calls refinement extension point
• KT-15220 Reuse resolution results of common code for platform modules in multiplatform projects
• KT-60476 K2: False positive NO_VALUE_FOR_PARAMETER in platform code for value class with default parameter in common declaration
• KT-65153 K/N: extract liveness analysis to a separate phase
• KT-59098 Support -Xjdk-release=1.6/1.7 with -jvm-target 1.8
• KT-63670 Implement platform specific declaration clash diagnostics across all backends
• KT-62547 Introduce a language feature flag for smartcasts based on "memory" variables
• KT-60820 K1: Empty vararg value is inserted in serialized annotation call with expect default vararg value
• KT-58172 Forbid expect class A actual constructor
• KT-54443 Smart cast to non-null after safe-call in require
• KT-25747 DFA variables: propagate smart cast results from local variables
• KT-22997 Smart-cast should merge is-check for non-nullable type and a null check to a nullable type
• KT-22996 Smart casts should observe nullability after is-check with a nullable subject type
• KT-22004 Allow to resolve CONFLICTING_OVERLOADS with Deprecated(HIDDEN)
• KT-61955 Support more wider actual member visibility, if the expect member is effectively final
• KT-59504 K2 compiler does not require resolved 'componentX' functions for the placeholder ('_') variables in the destructuring declarations
• KT-62239 Allow enum entries without parentheses uniformly
• KT-11712 Smart cast is not applied for invisible setter

Performance Improvements

• KT-47545 NI: Slow type inference involving large when-expression (ConstraintInjector.processConstraints)
• KT-62714 Do not add nullability annotations to the methods of inner classes in enum entries
• KT-62903 Unoptimzied when compilation
• KT-67388 FP intellij: performance degradation in build 611
• KT-67507 K2: Slow compilation times when a class has a lot of possibly conflicting declarations
• KT-65005 K2: Investigate testCommonSuperTypeContravariant performance
• KT-65996 Compiler enters endless loop
• KT-66341 K2: Don't build IdSignatures in FIR2IR with IR f/o builder
• KT-66172 K2: Improve memory consumption of KtPsiSourceElement
• KT-50860 Combination of array set convention and plusAssign works exponentially
• KT-62798 'in' range checks are not intrinsified in kotlin-stdlib
• KT-65579 K2: performance regression in FP Space
• KT-61635 K2: getConstructorKeyword call in PsiRawFirBuilder.toFirConstructor forces AST load
• KT-62619 FIR: Checker performance regression due to MISSING_DEPENDENCY checkers
• KT-62044 Do not add nullability annotations to the methods of anonymous class
• KT-62706 Optimize KtSourceElement.findChild()
• KT-62513 Do not add nullability annotations to the methods of local classes
• KT-61991 K2: avoid redundant full body resolution for properties during implicit type phase
• KT-61604 [K/N] Bitcode dependency linking is slow for large compilations
• KT-61121 [K/N] Kotlin Native compiler performance is slow when generating large frameworks
• KT-57616 K2: Consider optimizing reversed versions of persistent lists in FirTowerDataContext

Fixes

• KT-67486 K2: Calling method from a Java (implementing a Kotlin class) with named parameters is no longer possible if Java method has different parameter names
• KT-64615 Inconsistent error messages for platform type nullability assertions
• KT-65062 K2: build kotlinx.collections.immutable and pass to CI
• KT-68164 Smart cast fails for KT-49404
• KT-56545 Fix incorrect functions mangling in JVM backend in case of accidental clashing overload in a Java subclass
• KT-49404 Fix type unsoundness for contravariant captured type based on Java class
• KT-64598 K2: build Arrow with k2 user project
• KT-61039 False positive ABSTRACT_MEMBER_NOT_IMPLEMENTED in K1 when expect actual super types scopes don't match
• KT-56408 Inconsistent rules of CFA in class initialization block between K1 and K2
• KT-63580 "AssertionError: access of const val: GET_FIELD" caused by const value and variable with delegation
• KT-67993 K2: PCLA Inference throws exception with local objects
• KT-61768 Wrong bytecode index in LineNumberTable when there is an incremental operation
• KT-63567 "NoSuchMethodError" on getting value of lazily initialized property by companion's const value
• KT-56078 K2: build kotlinx.coroutines
• KT-67609 K2: False negative INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_ERROR
• KT-57750 Report ambiguity error when resolving types and having the same-named classes star imported
• KT-65603 K2: No approximation is done on public, but effectively private property
• KT-59932 K2: Disappeared AMBIGUOUS_ANONYMOUS_TYPE_INFERRED
• KT-59906 K2: Disappeared CAPTURED_VAL_INITIALIZATION
• KT-53886 NoSuchMethodError exception in Kotlin/Native compiler
• KT-57678 K2: Inconsistency in how K2 analyzes unresolved code for loops and changing closures
• KT-57871 K1/K2 inconsistency on if-conditional without else-branch in parenthesis
• KT-56384 K2: build IntelliJ monorepo master branch
• KT-49191 Leaked integer literals from lambda with flexible return type
• KT-65812 K2: "OutOfMemoryError: Java heap space" in kotlin.utils.SmartList.add
• KT-67224 K2/Native: Member overrides different '@Throws' filter from separate module
• KT-65623 K2: Unresolved reference in connection with casts
• KT-64136 K2: NSME with Anvil compiler plugin
• KT-51241 Provide a error when override method has different set of context receivers
• KT-52920 Confusing "Multiple arguments applicable for context receiver" error message
• KT-67912 K2: Cannot inference type properly from inline function with Type parameter
• KT-68056 Prohibit referencing java field in case of conflict with property from companion object of the derived class
• KT-61129 K2: Implement error suppression warning
• KT-67367 K2: Incorrect resolution to top-level function with less specific signature in presence of SAM constructor on the same tower level
• KT-50179 Fix DUPLICATE_LABEL_IN_WHEN warning with new rules of complex boolean constants
• KT-45334 Prohibit referencing constructors of sealed classes by its inner members
• KT-59943 K2: Disappeared OPERATOR_MODIFIER_REQUIRED
• KT-67875 K2: Resolution ambiguity between Iterable and varargs
• KT-67699 Not enough information to infer type argument for 'Error' using Arrow's Raise context receiver since Kotlin 2.0.0-Beta3
• KT-66527 K2: type mismatch on override for type
• KT-59897 K2: Disappeared PACKAGE_OR_CLASSIFIER_REDECLARATION
• KT-50020 K2: False-negative USAGE_IS_NOT_INLINEABLE when lambda in receiver position
• KT-44557 Implement main function detection to FIR
• KT-67810 K2: public-API inline function cannot access non-public-API annotation enum
• KT-66447 Implement KT-59138 under a language feature
• KT-54862 Anonymous type can be exposed from private inline function from type argument
• KT-37592 Property invoke of a functional type with receiver is preferred over extension function invoke
• KT-51194 False negative CONFLICTING_INHERITED_MEMBERS when dependency class contained in two different versions of the same dependency
• KT-67221 K2: "new inference error [NewConstraintError at Incorporate TypeVariable" for captured type
• KT-66701 K2: Java interface method override via Kotlin class rejected
• KT-60604 K2: introduced NON_PUBLIC_CALL_FROM_PUBLIC_INLINE, @PublishedApi needed for constants in annotations
• KT-64309 Generate a variable mapping for continuation parameter in suspend methods just from the start
• KT-65438 K2: Introduce WEAKLY_HIDDEN concept to built-in-JDK content mapping
• KT-65235 JDK 21 might lead to change in overloads resolution
• KT-66768 K1: False positive UNRESOLVED_REFERENCE in super.getFirst/getLast call
• KT-67106 Platforms libs-dependant autotests for ObjC checkers
• KT-65440 K2: Mark all potential implementations of List.getFirst()/getLast() as deprecated independently of JDK
• KT-65594 K2: Type inference fails on NullMarked object with star type
• KT-62849 Unoptimised bytecode for Java synthetic property references
• KT-60174 JVM IR inline: accidental reification in various cases
• KT-57609 K2: Stop relying on the presence of @UnsafeVariance using for contravariant parameters
• KT-54316 Out-of-call reference to companion object's member has invalid signature
• KT-66976 Some value class diagnostics are missed
• KT-57426 Incorrect error message on inapplicable smartcast from alien property
• KT-55111 OptIn: forbid constructor calls with default arguments under marker
• KT-49856 Incorrect smartcast on var assigned in try-catch block
• KT-41237 ReturnsImplies contract for receiver of member function does not work (no smartcast)
• KT-37878 No Smart cast for class literal reference of nullable generic type
• KT-35846 Smart cast with unchecked cast leads to unresolved call that was resolved before (both old and new inference)
• KT-30867 Unsound smartcast if smartcast source and break is placed in for-in header as function arguments
• KT-30267 Inconsistent smart casts in while (true)
• KT-33917 Prohibit to expose anonymous types from private inline functions
• KT-28889 Smart cast does not work with boolean and infix function
• KT-54790 False positive NO_ELSE_IN_WHEN when all interfaces are sealed
• KT-54920 K2: when with a single branch stops being exhaustive the second time it's done
• KT-53364 False positive UNUSED_VARIABLE warning for variable that is used across multiple blocks
• KT-43234 False positive INVALID_IF_AS_EXPRESSION caused by if without else inside else inside synchronized()
• KT-38490 False negative INVALID_IF_AS_EXPRESSION with unreachable code and coercion to Unit
• KT-35510 No INVALID_IF_AS_EXPRESSION ("'if' must have both main and 'else' branches if used as an expression") diagnostic for if-expression with only one branch and Nothing type condition
• KT-34016 Contracts - variable cannot be initialized before declaration
• KT-33829 False positive SENSELESS_COMPARISON with assignment in catch block
• KT-30717 False positive UNUSED_VARIABLE with local var used in inline lambda block with loop, return and other lambda
• KT-28232 RETURN_NOT_ALLOWED in inline lambda argument of '[... ]' operator convention
• KT-26116 No error when class member val is referenced in inline function before it is assigned later on
• KT-25311 Calls on error type values lead to false-positive unreachable code
• KT-24372 Misleading warning on unused setter parameter in some cases
• KT-23680 False positive UNREACHABLE_CODE on throw with a return inside finally clause
• KT-23502 When exhaustiveness is not checked for unreachable code, resulting in JVM back-end error
• KT-22621 "throw throw Exception()": False negative UNREACHABLE_CODE warning
• KT-22317 No INITIALIZATION_BEFORE_DECLARATION without primary constructor
• KT-67307 K2: "Cannot find cached type parameter by FIR symbol" in JpaRepository.saveAll
• KT-67185 K2: Incorrect coercion-to-Unit leading to CCE at runtime
• KT-64891 K2: consider supporting/forbidding foo.(bar)() syntax
• KT-59480 K2: build moko-resources
• KT-65771 K2: "IndexOutOfBoundsException: Cannot pop operand off an empty stack" when calling method imported using typealias as callable qualifier
• KT-67502 K2: "property must be initialized or be abstract" with try-finally in secondary constructor
• KT-67456 K2: "property must be initialized or be abstract" depending on constructor declaration order
• KT-63524 K2: "Not enough information to infer type argument"
• KT-67628 K2: "IllegalArgumentException: Expected nullable type" — alias of nullable type analyzed as non-nullable in type parameter
• KT-67625 K2: Array aliases can't be used as vararg values
• KT-67624 K2: False negative "The feature "break continue in inline lambdas" is experimental and should be enabled explicitly" in elvis operator
• KT-61787 K2 doesn't report warnings for some Gradle tasks
• KT-62550 K2: Different JVM signature of lambda with Unit return type
• KT-65120 K2 Consider turn into platform checkers ones which checks for objC
• KT-60271 K2: origins are not set on compare operators
• KT-28695 Compiler does not detect uninitialized property in lambda
• KT-67593 K2: false negative SUPER_CALL_WITH_DEFAULT_PARAMETERS
• KT-67484 K2: FIR2IR generates incorrect access to f/o of lateinit internal var
• KT-47382 JVM / IR: "AssertionError: Unbound private symbol IrFieldSymbolImpl" caused by string template in constructor and extension property
• KT-67581 K2: Compiler fails on actualizing abstract class with sealed Java class via type alias
• KT-22379 Condition of while-loop with break can produce unsound smartcast
• KT-67021 K2: Cannot find cached type parameter by FIR symbol: E of the owner: FirRegularClassSymbol Function
• KT-67014 K1/K2 handle when expression as annotation target differently
• KT-67254 K1/K2 both allow annotations on loops, assignments, array sets
• KT-66960 K2. KMP. False negative 'when' expression must be exhaustive without sealed class inheritor from common source-set
• KT-65578 K2: implement a deprecation warning for KT-57014 (wrong nullability returned from JDK SAM constructor lambda)
• KT-63466 @NonNull on a type-variable usage doesn't take precedence over a wildcard type argument
• KT-56134 K2: NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER diagnostic is reported for the wrong symbol
• KT-66196 Convert INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_ERROR to warning
• KT-66793 K2: "assigning single elements to varargs in named form is prohibited." caused by varargs supplied from java with elvis operator
• KT-59872 K2: Disappeared TYPE_MISMATCH
• KT-67192 K2: Disappeared TYPE_MISMATCH [3]
• KT-63319 K1/K2: inconsistent behavior around NullMarked and type parameter based types
• KT-59882 K2: Disappeared CANNOT_INFER_PARAMETER_TYPE
• KT-67191 K2: Disappeared TYPE_MISMATCH [4]
• KT-53752 Missed subtyping check for an intersection type
• KT-52628 Deprecate SAM constructor usages which require OptIn without annotation
• KT-54066 Deprecate upper bound violation in typealias constructors
• KT-64860 K2: Consider using different ConstraintPosition when fixing variables for PCLA
• KT-67189 K2: Disappeared TYPE_MISMATCH [5]
• KT-67551 K2: No wrong annotation target error for for statement
• KT-67374 K2: Object is not smartcasted to type parameter type
• KT-67264 K2: "argument type mismatch" with suspend lambda and java wildcard
• KT-63257 K2: FIR2IR inserts incorrect implicit cast for smartcasted variable
• KT-66902 K2: "Named arguments are prohibited for non-Kotlin functions" with Java interop
• KT-67311 K2: "Argument type mismatch" caused by lambda type when using named arguments
• KT-57011 Make real type of a destructuring variable consistent with explicit type when specified
• KT-62043 K2: Fix FirCompileKotlinAgainstCustomBinariesTest.testRawTypes
• KT-66256 K2: compiler FIR2IR crash on SAM-conversion to value parameter of in-projected type
• KT-67124 "Unstable inference behaviour with multiple generic lambdas" compilation error
• KT-59791 K2: Implement partially constrained lambda analysis
• KT-66743 Lambda receivers and anonymous function parameters of inaccessible types are allowed
• KT-67315 K2: Some default imports are not excluded
• KT-56126 Avoid using descriptors at JvmPlatformAnalyzerServices::computePlatformSpecificDefaultImports
• KT-66513 K2: Suppressing OPT_IN_USAGE_ERROR is now a warning in K2, preventing safe code gen compatible with -Werror
• KT-67233 False negative UNSAFE_CALL with type check after null coalescing with 'OR'
• KT-52802 Report ambiguity resolving between property/field and enum entry
• KT-64920 Json.encodeToString yields different results depending on whether typealias is used
• KT-58260 Make invoke convention work consistently with expected desugaring
• KT-67314 PCLA works inconsistently with smart-cast related CS forks
• KT-66797 K2 JS: Primary constructor property annotation with target VALUE_PARAMETER is put on property instead of parameter
• KT-55179 False negative PRIVATE_CLASS_MEMBER_FROM_INLINE on calling private class companion object member from internal inline function
• KT-54663 Projected types don't take into account in-place not null types
• KT-58191 K2: capturing closures successors that are already resolved (thanks to backward edges) must be taken into account for allowing smart casts
• KT-67144 K2: potential NPE when assigning to unstable vars
• KT-66971 K2: missing SMARTCAST_IMPOSSIBLE on open val declared in another module
• KT-66904 K2: possible NPE when reassigning captured variables
• KT-57031 operator assignment, increment/decrement should be considered as variable reassigning in terms of DFA. green in K1 -> red in K2 for unsound code
• KT-67212 K2: "Failed to find functional supertype for class org.jetbrains.kotlin.fir.types.ConeCapturedType"
• KT-67283 K2: No SAM conversion for fun interface with abstract toString
• KT-67318 Compiler fails with OutOfMemoryError on combination of PCLA+smart cast
• KT-66956 K2: false negative CONST_VAL_WITH_NON_CONST_INITIALIZER for inc/dec operators
• KT-64233 K2: K1/K2: ensure JVM ABI consistency for quality gates projects
• KT-63535 K2: Apply DFA implications for nullable Nothing to both sides
• KT-63413 K2 / kotlinx-atomicfu: "IllegalStateException: Expected some types"
• KT-62931 K2: extra class files for @OptionalExpectation marked annotations
• KT-34307 Confusing error message on lambda return type mismatch
• KT-62151 K2. overload resolution ambiguity for calls of Java record compact constructors
• KT-60732 K2 Scripting: TeamCity DSL test
• KT-59467 K2: build toolbox-enterprise
• KT-67205 K2: can't deserialize annotation with local class as argument
• KT-52175 K2: WRONG_ANNOTATION_TARGET for annotation that used inside if
• KT-65449 K2: build KAPT user project and pass it to CI
• KT-61384 IrFakeOverrideBuilder incorrectly checks visibility for friend modules
• KT-67142 K2: IrFakeOverrideBuilder: AbstractMethodError on raw type argument in a Java superclass
• KT-65105 K2 / Native: Member overrides different '@Throws' filter
• KT-62570 IncompatibleClassChangeError due to overriding final method
• KT-57812 K2: support serialization of type annotation's arguments
• KT-67190 K2: Disappeared TYPE_MISMATCH [2]
• KT-56683 K2: No control flow analysis for top-level properties
• KT-67188 K2: Disappeared TYPE_MISMATCH [6]
• KT-62063 K2: drop pre-release flag in 2.0-RC
• KT-67187 K2: Disappeared TYPE_MISMATCH [1]
• KT-66909 K2: Implement a diagnostic for returning null from a lambda with expected return type Unit!
• KT-66534 False positive ASSIGNMENT_TYPE_MISMATCH in lambdas with expected return type Unit!
• KT-63381 IrFakeOverrideBuilder: PublishedApi affects overridability of internal members
• KT-63836 K2: No deprecation error message in common metadata compilation
• KT-57618 K2: complex deprecation messages are not printed in the error
• KT-59856 K2: Check ConeDiagnostics that are not mapped to KtDiagnostics
• KT-57502 K2: Smart casts should be forbidden if variable that remembers the smart cast is declared by delegation
• KT-63967 K2: Missing getterSignature in metadata for script variables
• KT-59372 K2: Missing SELF_CALL_IN_NESTED_OBJECT_CONSTRUCTOR_ERROR
• KT-60526 K2: Fix the TODO in convertToIr.kt
• KT-67090 K2: Exception from metadata compilation when compiling class with annotations from dependencies
• KT-59479 K2: build KorGE
• KT-64502 K2: Internal error on calling function before declaration
• KT-62560 K2: KAPT4: annotation @ReplaceWith is missing a default value for the element 'imports'
• KT-67027 K2: Review all use-sites of annotation arguments utilities
• KT-65012 IR Evaluator: NoSuchFieldException when evaluating protected/private fields of superclasses
• KT-66953 K2: toByte() call on Char leads to ClassCastException for klib backends
• KT-60096 K2: Introduced API_NOT_AVAILABLE
• KT-59484 K2: build trustwallet sample
• KT-64151 K2: consider implementing FIR-level constant evaluation
• KT-65787 K2: "KotlinIllegalArgumentExceptionWithAttachments: Expected FirResolvedTypeRef with ConeKotlinType" caused by passing lambda expression with multiple labels to function
• KT-53629 K2: forbid multiple labels per statement
• KT-65255 K2 / KJS: "IllegalArgumentException: Candidate is not successful, but system has no contradiction"
• KT-65195 K2: Unexpected exception when executing dynamic array element inc/dec
• KT-63416 K2 / Contracts: False positive "Leaked in-place lambda" warning caused by suspend lambda with callsInPlace contract
• KT-66717 Incorrect diagnostics around intersection property overrides
• KT-63540 Restrict the CONFLICTING_OVERLOADS + DeprecatedLevel.HIDDEN ignore to final callables
• KT-56587 There are no warnings in some cases when Enum.entries is shadowed
• KT-65111 K2: Java star imports don't work in KJK interdependencies
• KT-63709 K2: Argument smartcasting impacting receiver and call resolution for implicit invoke
• KT-63530 K2: Disable passing data flow info from in-place lambdas
• KT-65377 K2: "Argument type mismatch" caused by approximated captured type argument of generic type
• KT-59400 K2: Missing CANNOT_INFER_VISIBILITY
• KT-62305 K2: Missing Fir metadata serialization support for scripts
• KT-64534 K2: org.jetbrains.kotlin.util.FileAnalysisException: Somewhere in file
• KT-57555 [LC] Forbid deferred initialization of open properties with backing field
• KT-65776 [LC] K2 breaks false && ... and false || ...
• KT-64641 K2: Change in inference of supertype of function types with receiver
• KT-65649 K2: IR has incorrect origins for some inplace updating operators
• KT-64295 Forbid recursive resolve in case of potential ambiguity on upper tower level
• KT-62866 K2: Change qualifier resolution behavior when companion object is preferred against static scope
• KT-55446 Change impact of private-to-this visibility to resolution
• KT-64255 Forbid accessing internal setter from a derived class in another module
• KT-64966 Forbid generic delegating constructor calls with wrong type for generic parameter
• KT-63389 K2: WRONG_ANNOTATION_TARGET is reported on incompatible annotations of a type wrapped into ()?
• KT-66748 K2: False-positive AMBIGUOUS_SUPER in toString
• KT-67013 K2: ClassCastException: class FirConstructorSymbol cannot be cast to class FirNamedFunctionSymbol
• KT-64872 K2: do-while condition able to access uninitialized variable
• KT-66350 K2: "IllegalStateException: Unsupported compile-time value STRING_CONCATENATION" when evaluating an annotation argument string
• KT-61798 K2 incorrectly calculates modality of property accessors
• KT-65035 IrFakeOverrideBuilder: AbstractMethodError on inheritance from Java subclass of CharSequence with inherited implementations
• KT-61579 K2: Inconsistent reporting UNINITIALIZED_VARIABLE for top-level properties
• KT-66730 K2: False positive RETURN_TYPE_MISMATCH in return statement in SAM constructor
• KT-66570 Generic wildcard upper bound inference error
• KT-65272 K2: invoke operator applies "restricted suspending call" error differently than K1
• KT-66148 K2. Sources of receivers updated twice because of PCLA
• KT-62525 K2: IllegalStateException: Can't find KotlinType in IrErrorType: IrErrorType(null)
• KT-64266 K2: don't report MISSING_DEPENDENCY_CLASS on lambda parameter for non-generic types
• KT-65300 K2: this-expressions in initializers and local declarations don't introduce type information to either BI or PCLA
• KT-66463 K2: false positive ACCIDENTAL_OVERRIDE_CLASH_BY_JVM_SIGNATURE
• KT-62356 Prohibit using property+invoke for iterator
• KT-63631 K2: constant value UByte.MAX_VALUE is incorrectly deserialized from metadata
• KT-65386 K2: Different signature of invoke for Unit lambda
• KT-60574 K2: generated IR for suspendCoroutineUninterceptedOrReturn is different from K1 (K2 uses Any? instead of Unit)
• KT-66512 K2: Incorrect diagnostic in lambda whose expected type is a type alias to Unit
• KT-66279 K2: False positive INITIALIZER_TYPE_MISMATCH with return Unit in a lambda with the expected type () -> Unit
• KT-66277 K2: False negative RETURN_TYPE_MISMATCH with empty return in lambda assigned to a property
• KT-66654 K2 FIR resolution: Mismatch between actual type and expected type for a value parameter when the parameter type is a function type with special function kind
• KT-66638 Cannot access properties of a generic type with wildcards
• KT-66690 K2: don't report MISSING_DEPENDENCY_CLASS on expression without errors for generic type arguments
• KT-66767 K2: Destructuring declaration inside initializer failure
• KT-63695 JVM: Don't use plugin extensions when compiling code fragment
• KT-65727 K2: add proper package for properties generated from destructuring declarations
• KT-64854 K2: Trying to access private field on runtime with contracts
• KT-65388 IrFakeOverrideBuilder - custom annotation is available in fake getter/setter
• KT-66595 K2: compiler FIR checking crash on destructuring declarations calling hidden componentN declarations
• KT-62129 K2: Verification error on calling an extension from an env with 2+ context receivers
• KT-41607 NI: UNSAFE_CALL caused by try catch block assigning to a nullable variable
• KT-63932 K2/Native codegen test failures around builder inference
• KT-66352 K2: difference between LL FIR and FIR for componentN functions
• KT-66686 K2 Script: Unresolved reference of script-specific entities on out-of-order resolve
• KT-65523 K2: add proper package for result$$ property
• KT-66699 Restore HostManager ABI
• KT-60533 Inliner incorrectly captures non-null value as null in coroutines
• KT-57925 K2: Consider removing FirEmptyContractDescription
• KT-61893 K2: should not resolve to Java function with Kotlin hidden-level deprecation
• KT-59669 K2: Explore assignments in in-place lambdas
• KT-66271 Fir: Deserialize classFile, functionFile and propertyFile from KlibMetadataProtoBuf
• KT-57957 K2: Symbol providers are frequently queried with error-named class IDs
• KT-66046 K2: false negative CANNOT_WEAKEN_ACCESS_PRIVILEGE on property
• KT-66677 K2: OVERRIDE_DEPRECATION isn't reported for WEAKLY_HIDDEN method toArray()
• KT-62793 K2: slightly different bytecode of suspend conversions
• KT-57244 K2: slightly different naming scheme for suspend conversion adapters
• KT-60256 K2: types are not substituted in suspend conversion
• KT-66673 K2/JS: FirJsInheritanceClassChecker doesn't expand type aliases to supertypes
• KT-66475 K2/KMP/Wasm: report WRONG_JS_INTEROP_TYPE from a platform checker
• KT-66474 K2/KMP/JS: report EXTERNAL_TYPE_EXTENDS_NON_EXTERNAL_TYPE from a platform checker
• KT-66473 K2/Wasm: FirWasmExternalInheritanceChecker doesn't expand type aliases
• KT-64407 Implement WriteSignatureTestGenerated for K2
• KT-64438 K2: Port CodegenTestCase to K2
• KT-64404 Implement WriteFlagsTestGenerated for K2
• KT-66491 K2 / KJS: "Name contains illegal characters." caused by backticks in import
• KT-66275 K2: false-positive "Java module does not depend on module" error on access to inherited member from twice-transitive dependency via class from transitive dependency
• KT-65801 IrFakeOverrideBuilder - visibility is lost for setter in KJK hierarchy
• KT-65576 K2: Incorrect resolution of variable+invoke when the property type is not computed
• KT-58575 Private Kotlin property prevents use of Java get- and set-methods from Java-Kotlin-Java hierarchy
• KT-61282 K2: Incorrect overridden function for java.nio.CharBuffer.get
• KT-65464 K2: False positive UNRESOLVED_REFERENCE on extension property call defined in KJK hierarchy
• KT-59470 K2: build KaMPKit
• KT-60510 Smartcast to functional type does not work in when exprssion
• KT-59677 K2: Report diagnostics about missing receiver for delegated constructor call to inner class
• KT-65183 K2: Remove workaround for @OnlyInputTypes and captured types with recursive supertypes from inference
• KT-66120 IrFakeOverrideBuilder: wrong return type in intersection with 3 classes
• KT-65939 IrFakeOverrideBuilder - nullability annotation is lost in intersection without annotation
• KT-59473 K2: build firebase-kotlin-sdk
• KT-66356 K2: type mismatch error when generic type with inaccessible generic type as type argument is produced and consumed by declarations from dependencies
• KT-65193 K2: "JAVA_TYPE_MISMATCH" caused by MutableList
• KT-66636 NoSuchMethodError: 'void org.jetbrains.kotlin.ir.expressions.impl.IrCompositeImpl. in the FLysto K2 QG
• KT-63941 K2: "IllegalStateException: Unsupported compile-time value STRING_CONCATENATION" caused by class reference in string expression as annotation parameter
• KT-65704 K2: computeCommonSuperType of flexible type with recursive captured type argument produces giant multi-level-deep type
• KT-65410 K2: ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED for 'removeAt' in KJK hierarchy
• KT-65184 K2: disappeared TYPE_MISMATCH for java collections
• KT-66392 K2: Exception in KJK hierarchy with implicit types
• KT-66551 Revert temporary commits after KT-62063 and bootstrapping
• KT-65218 FIR LL and DiagnosticFE10 tests start to fail in case of adding any new declaration into stdlib commonMain
• KT-66552 K2: build of intellij crashes the compiler
• KT-63746 K2: JSpecify: If a class has a @Nullable type-parameter bound, Kotlin should still treat unbounded wildcards like platform types
• KT-66504 K2: plusAssign operator call is resolved differently than function call
• KT-48515 JSpecify: If a class has a @Nullable type-parameter bound, Kotlin should still treat unbounded wildcards like platform types
• KT-57588 K2/Native: False positive '"CONFLICTING_OVERLOADS", "PARAMETER_NAME_CHANGED_ON_OVERRIDE" on overriding objc methods
• KT-58892 K2: Parcelize doesn't work in common code when expect annotation is actualized with typealias to @Parcelize
• KT-65882 K2: "KotlinNothingValueException" caused by unsafe cast and Nothing::class
• KT-66124 K2: Remove FirLambdaArgumentExpression and FirNamedArgumentExpression after resolution
• KT-65959 K2: Incorrect warnings about inline function impact
• KT-64994 K2: @Composable lambda type is not resolved from other modules
• KT-66048 K2: property becomes nullable in KJK hierarchy if base declaration has implicit return type
• KT-47843 No error reported on assigning "continue" to a companion object
• KT-47530 NI: Unexpected TYPE_MISMATCH when combining nested conditional and contravariant type argument
• KT-49583 NI: NullPointerException on compiling anonymous function returning a method reference
• KT-42782 NI: Smart casting for generic type doesn't work if the variable is already smart cast
• KT-38031 FIR: Discrepancy in call resolution for qualifiers with old FE
• KT-65789 K1/K2: Resolve change in constructor/top-level function ambiguity
• KT-66150 K2: expects type argument in super qualifier
• KT-60971 Incorrect "cannot inline bytecode built with JVM target ..." on property setter if only getter is inline
• KT-61514 K2: Build fake overrides using IR during Fir2IR
• KT-65584 K2: "Duplicate parameter name in a function type"
• KT-50008 JSpecify @Nullable annotation on type-parameter bound prevents type-variable usages from being platform types
• KT-37000 IndexOutOfBoundsException from TypeResolver on typealias with cyclic references
• KT-56988 CFG, smart casts: red in K1 -> green in K2 for invalid code
• KT-62118 FIR: "HashMap.entry" has invalid enhanced type
• KT-64840 K2: Bare type are not allowed for TV based values during PCLA
• KT-65415 K2: Stdlib K2 build error: IrConstructorSymbolImpl is already bound
• KT-66449 Make DiagnosticSuppressor a project-level extension
• KT-66411 FIR: Real source on fake block around assignment expression in the "when" branch affects resolve in K2 Analysis API and IDE
• KT-65249 K2: False positive modality is different for native compilation
• KT-65982 K2 Scripts cannot disambiguate declarations imported from default and explicit imports
• KT-65677 K2: Unable to resolve parent class from companion object
• KT-47310 Change qualifier resolution behavior when companion property is preferred against enum entry
• KT-41034 K2: Change evaluation semantics for combination of safe calls and convention operators
• KT-63529 K2: Compiler does not detect tailrec call with nullable type
• KT-66441 Remove symbol table from IR fake override builder in Fir2Ir
• KT-64846 K2: false negative CONFLICTING_JVM_DECLARATIONS on inheritance from Java collection subclass with a conflicting override
• KT-62312 [K2/N] revert putting stdlib to the beginning of libraries list in the compiler
• KT-58203 K2: false-negative incompatible types error on is-check with unrelated type
• KT-65722 K2: Property reference refers to non-existent functions
• KT-65878 K2: "ClassCastException" when passing nun-suspend lambda to SAM constructor with named argument
• KT-66379 K2: No extra message in UPPER_BOUND_VIOLATED for cases with CapturedType
• KT-59475 K2: build nowinandroid
• KT-65926 K2: add tests for all fixed-in-k2 / not-reproducible-in-k2 unresolved issues
• KT-59481 K2: build aws-sdk-kotlin + smithy-kotlin
• KT-65022 K2: Compiler crashes when array literal is used in delegate expression
• KT-62836 K2: Expected FirResolvedTypeRef with ConeKotlinType but was FirImplicitTypeRefImplWithoutSource
• KT-64727 K1: Closing bracket of object inside crossinline lambda or inside lambda in inline function is not hit on step-over
• KT-64726 K1: Cannot stop on closing bracket of crossinline lambda inside of another crossinline lambda
• KT-64725 K1: Cannot stop on closing bracket of lambda of inline-only function
• KT-66272 Could not load module with a combination of type parameters
• KT-66243 Could not load module in a builder inference with lambda with typed parameter
• KT-66229 Could not load module in a builder inference with Map.Entry
• KT-66313 K2: declaration-order-dependent false-positive "recursive problem in type checker" error on getX declaration with implicit return type that calls x declaration via intermediate declaration in getX's expression body
• KT-61041 K2: Consider getting rid of confusing shouldRunCompletion and shouldAvoidFullCompletion function in FirInferenceSession
• KT-66267 K2: generic function's type parameter is erased if present as type argument in type of callable reference to member of generic function's local class
• KT-61448 K2: Disappeared DEPRECATION in testWithModifiedMockJdk
• KT-60106 K2: Introduced REIFIED_TYPE_FORBIDDEN_SUBSTITUTION
• KT-58279 K2. False-negative Smart cast to is impossible, because is a public API property declared in different module for Java static field
• KT-61626 K2: Module "com.soywiz.korlibs.kmem:kmem" has a reference to symbol korlibs.memory/Buffer|null[1]
• KT-57427 Fix inconsistencies in name manglers that use different declaration representations
• KT-66258 K2: accessor-targeted @Suppress annotation is ignored on primary constructor property
• KT-29559 Smart Cast functionality doesn't behave in an expected way in all cases
• KT-60777 K2: missing INLINE_FROM_HIGHER_PLATFORM
• KT-66260 K2: false-positive "abstract function in non-abstract class" error on abstract member function of open interface
• KT-66067 K2: different overrides are created in a complex hierarchy with raw types and upper-bounded type parameters
• KT-65821 K2: [NONE_APPLICABLE] None of the following functions is applicable: [constructor(message: String?): Throwable, constructor(cause: Throwable?): Throwable, constructor(): Throwable, ...]
• KT-66268 K2: Expected FirResolvedTypeRef with ConeKotlinType but was FirUserTypeRefImpl
• KT-63563 K2: False negative RETURN_TYPE_MISMATCH with empty return
• KT-60797 K2: implement JAVA_MODULE_DOES_NOT_EXPORT_PACKAGE
• KT-28159 Smartcasts don't work with Nothing? values (Nothing? considered a null constant => an unstable value)
• KT-28262 Smartcasts for reference equality don't work if explicit true check is used
• KT-66000 K2: inherited inline getter has not been inlined
• KT-66158 K2: not nullable return type for upper-bounded kotlin type parameter in KJK hierarchy
• KT-57268 K2: extra methods remove and/or getOrDefault are generated for Map subclasses with JDK 1.6 in dependencies
• KT-63577 K2: false-positive "wrong number of type arguments" error on callable reference to member of generic function's local class
• KT-62352 jspecify NonNull annotation seems not supported
• KT-65636 PowerAssert: Negative contains operator not aligned correctly in K2
• KT-64271 K2: Wrong overriddenSymbols for toString of data class
• KT-62779 K2: Difference in fake override generation
• KT-61941 K2: FIR2IR incorrectly generates f/o structure for complex java/kotlin hierarchies with remapped jvm declarations
• KT-60283 K2: fake override for java static method is not generated
• KT-65095 K2: no bridge generated for getOrDefault when inheriting from Java Map implementation
• KT-57301 K2: getOrDefault and bridges are not generated for certain Map subclasses
• KT-50916 K2: store resolved type inside ConeStubType after builder inference
• KT-65857 K2: java.lang.IllegalArgumentException: Unknown visibility: unknown
• KT-66174 -Xjdk-release 6 and 7 have a misleading error message
• KT-66175 Wrong supported options list for -jvm-target compiler option
• KT-58814 Too eager subtype inference in when expression
• KT-65408 K1: "There are still 2 unbound symbols after generation of IR module" caused by data object's copy function usage
• KT-65844 False Positive "This class can only be used as an annotation or as an argument to @OptIn" when passing as an array
• KT-58697 K2: Tests: Assert no dump files exist when dump directive isn't present
• KT-63258 NPE with function reference from within lambda during init
• KT-60597 K1: IllegalArgumentException: fromIndex(0) > toIndex(-1) when wrapping receiver with backticks
• KT-33108 USELESS_CAST false positive for cast inside lambda
• KT-58458 K1: "java.lang.NullPointerException" with 'var equals' or 'val equals' as argument in when
• KT-58447 K1: "AssertionError: Recursion detected on input" with @ParameterName and extension
• KT-41013 OVERLOAD_RESOLUTION_AMBIGUITY for functions takes lambda: can not resolve it, but only named lambda parameter
• KT-56032 [LC issue] Incorrect wrapping when passing java vararg method to inline function
• KT-65588 K2: typealias of primitive type in vararg causes ABI incompatibility
• KT-23873 Indexed access operator can cause false USELESS_CAST warning
• KT-31191 Contract not smartcasting for extension functions in if-statement with multiple conditions
• KT-28725 ReenteringLazyValueComputationException during resolution & inference
• KT-35429 ReenteringLazyValueComputationException when accessing property with same name
• KT-63826 K2: expect for expect crashes the compiler
• KT-25668 False-positive error on restricted suspending function call with callable reference
• KT-18055 SMARTCAST_IMPOSSIBLE on mutable data class variable with a read-only property
• KT-15904 Improve error message when type of generic extension call is inferred from receiver
• KT-66186 K1 diagnostics miss some reporting messages
• KT-65101 Generics behaving different when parenthesized
• KT-63444 TYPE_MISMATCH caused by Inner class with nullable type and star projection
• KT-62022 K1 False positive EXPOSED_FUNCTION_RETURN_TYPE on generics with anonymous object types
• KT-58751 Definitely non-nullable type gets lost with star projection
• KT-56624 "Unresolved reference" with import alias and enum constructor call
• KT-54726 K1: StackOverflowError on mutually recursive typealiases
• KT-35134 False negative INCOMPATIBLE_TYPES, EQUALITY_NOT_APPLICABLE when comparing smartcast value to Boolean
• KT-20617 Qualified this@property does not work in extension properties with body expression
• KT-10879 OVERLOAD_RESOLUTION_AMBIGUITY for synthetic property accessor with smartcasted receiver
• KT-26768 K1 IDE: False positive "Smart cast to '$CLASS$' is impossible", on local variable in run closure
• KT-63525 K2: "IllegalStateException: Fake override should have at least one overridden descriptor" caused by unreachable code
• KT-65333 K2: UNRESOLVED_REFERENCE for java inner class in intersection scope
• KT-61060 K2: Rewrite delegate inference
• KT-63712 Make it possible to add new stdlib API with SinceKotlin(2.0)
• KT-63741 K2: fix visibility inference with overridden + inherited member
• KT-64488 K2: False positive DEPRECATED_ACCESS_TO_ENTRY_PROPERTY_FROM_ENUM with context receivers
• KT-62283 K2: build Dokka with K2 user project and pass it to CI
• KT-57585 K2/MPP: false-negative errors on expect/actual modifiers mismatch
• KT-66077 IrFakeOverrideBuilder: NPE from IrJavaIncompatibilityRulesOverridabilityCondition.doesJavaOverrideHaveIncompatibleValueParameterKinds
• KT-57044 K2 LL Tests: false-positive 'Overload resolution ambiguity between candidates: [@Override() fun test(): Unit , fun test(): Unit]'
• KT-66020 K2: ISE "IrPropertySymbolImpl is unbound. Signature: null" on a property with getter with @JvmName
• KT-62135 K2, KLIB: Classes are still sorted before serializing them to metadata
• KT-65866 [K/N] Fix java.lang.IllegalArgumentException: Unknown visibility: unknown
• KT-66005 K2: "Should not be here: class org.jetbrains.kotlin.fir.expressions.impl.FirResolvedReifiedParameterReferenceImpl" on incorrect comparison of reified type parameter
• KT-65840 [K2] Initializer type mismatch: expected 'Type', actual 'Type'
• KT-65002 K2: Incorrect suspend conversion if argument is an aliased functional type
• KT-65984 K2 scripting: failure on processing SUPPRESS annotation in the last script statement
• KT-65680 K2: Class redeclaration leads to BackendException during IR fake override builder
• KT-66028 K2: Convert FirExpectActualDeclarationChecker to platform checker
• KT-65592 K2: IrFakeOverrideBuilder: ISE "should not be called" on diamond hierarchy with explicit dependency on annotations.jar
• KT-65277 IrFakeOverrideBuilder: NPE from IrJavaIncompatibilityRulesOverridabilityCondition.doesJavaOverrideHaveIncompatibleValueParameterKinds
• KT-65983 K2 gradle scripting: "'val' cannot be reassigned" errors
• KT-60452 K2 Scripting: implement overriding of the script params
• KT-65975 K2: Implicit receivers resolution order in K2 scripting
• KT-60249 K2: No unit coercion generated for loops body
• KT-65937 K2: order of enum entries changed
• KT-65933 K2: Type missmatch in arrays in annotations
• KT-65343 JVM IR: Source parameter is lost when copying with DeepCopyIrTreeWithSymbols
• KT-65103 K2: IllegalArgumentException: IrErrorCallExpressionImpl(5388, 5392, "Unresolved reference: R?C|/cont|") found but error code is not allowed
• KT-62788 K2: difference in annotation inheritance in overriddings
• KT-65669 K2: ClassCastException class FirDeclarationStatusImpl cannot be cast to class FirResolvedDeclarationStatus
• KT-65493 IrFakeOverrideBuilder: difference in return type for intersection with raw type
• KT-65207 IrFakeOverrideBuilder - nullable return type for intersection override
• KT-65972 Fix problems related to Unknown visibility in [FP] intellij
• KT-65246 K2: Overiding java method that takes vararg parameter causes WRONG_NULLABILITY_FOR_JAVA_OVERRIDE warning
• KT-59883 K2: Disappeared INVALID_IF_AS_EXPRESSION
• KT-57300 K2: subclass of MutableCollection with primitive element type has methods with boxed type
• KT-58476 Context receivers: "No mapping for symbol: VALUE_PARAMETER" with context-receiver inside suspended lambda calling another suspended function
• KT-52213 Context receivers: "No mapping for symbol: VALUE_PARAMETER" caused by contextual suspending function type with receiver
• KT-13650 Right-hand side of a safe assignment is not always evaluated, which can fool smart-casts
• KT-61823 K2: Render list of declarations in diagnostic messages with linebreak as separator
• KT-65302 IrFakeOverrideBuilder - missing @EnhancedNullability
• KT-65241 K2: [LT] Compiler crash on assignment expression with incorrect lvalue
• KT-60006 K2: Disappeared EXPRESSION_EXPECTED
• KT-65817 K2: Check if callable reference vararg adaption can be affected by primitive type aliases
• KT-62847 K2: Introduce FIR node for SAM conversion
• KT-65920 K2: no field for delegation is created
• KT-65487 K2: Different fake overrides and false positive NOTHING_TO_OVERRIDE for intersection/override with Collection.remove
• KT-65460 Don't compare order of functions in IR dump
• KT-64276 [K/N][K2] K2 behaviorial difference with inconsistent inheritance of ObjCName
• KT-65572 [K/N][K2] INCOMPATIBLE_OBJC_NAME_OVERRIDE error message changed from K1
• KT-63420 Prevent weakening visibility in implicit overrides
• KT-64635 K2: "KotlinIllegalArgumentExceptionWithAttachments: Expected expression 'FirAnonymousFunctionExpressionImpl' to be resolved" when provideDelegate is extension of function with receiver
• KT-63879 K2: Redundant flag declaresDefaultValue for parameter of function inherited from delegate
• KT-56744 Prepare language committee ticket about DFA/Smart-cast related changes in K2
• KT-65790 K2: Move check for private-to-this visibility into checker
• KT-65551 K2: Property redeclaration on native compilation leads to NotImplementedError
• KT-65770 K2: Diagnostic rendering of vararg Foo parameter produces vararg Array<Foo>
• KT-65555 K2: must override 'spliterator' because it inherits multiple implementations for it
• KT-59921 K2: Disappeared NULL_FOR_NONNULL_TYPE
• KT-65290 K2: No override for FUN DEFAULT_PROPERTY_ACCESSOR
• KT-19446 False positive "Smart cast to 'Foo' is impossible" due to same variable names in different closures
• KT-65337 K2: False positive UNRESOLVED_REFERENCE when lambda labeled by illegal label and operator-invoked
• KT-65448 K2: fake overrides are not generated for 'containsAll', 'removeAll', 'retainAll' if inherited from raw type
• KT-65298 K2: not nullable return type and parameter for raw types
• KT-63377 K2: conflict between type parameter and nested class
• KT-63286 K2: Top-level properties in scripts are missing initialization checks
• KT-59744 K2: false negative VAL_REASSIGNMENT in case of reassignment inside custom setter
• KT-58579 K2: false-positive new inference error on invoking a generic function on Java wildcard type bounded by raw-typed Java inner class
• KT-60258 Support java-kotlin interop for @SubclassOptInRequired
• KT-60262 Support for inter-module interaction for @SubclassOptInRequired
• KT-62878 K2: missing implicit coercion to unit
• KT-59715 K2: Check behaviour of property + operator in operator position
• KT-63441 IrFakeOverrideBuilder: "accidental override" when implementing a Java function taking an array parameter
• KT-65706 K2: IrFakeOverrideBuilder: ISE "Fake override should have at least one overridden descriptor" on J-K-J-K hierarchy with interface delegation
• KT-61362 K2: Properties/fields are missing from system libraries
• KT-63344 K2: False positive ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED
• KT-58845 K2: SAM checker can run incorrectly in presence of an expect supertype
• KT-61843 K2: Missing TYPE_MISMATCH for nested array literals
• KT-62752 expect-actual matcher/checker: return type must be "checking" incompatibility
• KT-59887 K2: Disappeared ACTUAL_MISSING
• KT-65604 K2: INAPPLICABLE_JVM_NAME: effective modality
• KT-65637 Prepare documentation for PCLA implementation
• KT-65341 K2: "Cannot find cached type parameter by FIR symbol" caused by not-null assertion operator inside string in throw
• KT-49283 Support contribution type info from a nested builder inference call
• KT-64077 K2: Builder inference ignores constraints from nested builder inference
• KT-49160 Couldn't infer a type argument through several builder inference calls broken by a local class
• KT-63827 K2: Array += desugaring doesn't have origin
• KT-65057 K2: Wrong type inferred in code with heavy use of generics
• KT-63514 ISE “Inline class types should have the same representation: [I != I” during compilation on submitting UIntArray to vararg
• KT-61088 K2: return types of non-last-expression calls to @PolymorphicSignature methods inside try-expressions don't resolve to void when required
• KT-62476 K2: Enable building fake overrides by ir on non-JVM targets
• KT-59839 Prohibit header and impl in MPP
• KT-61310 K2: "Not enough information to infer type variable R" for transformLatest
• KT-63733 Builder-style type inference can't resolve to extension overloads when they're more applicable than member ones
• KT-57707 K1: inconsistent TYPE_MISMATCH in builder inference
• KT-55057 Builder inference changes behaviour sporadically based on BI annotation on unrelated call
• KT-60663 Builder inference does not work inside a nested unrelated builder inference lambda
• KT-53639 TYPE_MISMATCH: compiler can't infer the list's type when using buildList {} builder or Collection#isNotEmpty
• KT-60291 K2: "IllegalStateException: Cannot serialize error type: ERROR CLASS: Cannot infer argument for type parameter T" during FIR serialization
• KT-65033 K2: Fir2LazyIr: Lazy type aliases not supported
• KT-57709 Inconsistent extension function call resolution in builder inference
• KT-53740 Builder inference with multiple lambdas leads to unsound type
• KT-60877 Builder inference from the null literal results in Nothing instead of Nothing? for producing positions of the postponed type variable
• KT-53553 Builder inference: inconsistent types in different lambda scopes
• KT-54400 K2: builder inference does not work with assignments of literals to member properties
• KT-63840 Builder inference fails on calls to identity-shaped functions with postponed type variables inside select-constructions
• KT-65262 K2: Exception in DFA for combination of try-finally + PCLA + DI
• KT-58169 K2: make equals bounded smart casts work the same as in K1
• KT-64967 K2: false positive TYPE_MISMATCH with generic type parameters
• KT-64102 K2: Missing (disappeared in this case) DELEGATE_USES_EXTENSION_PROPERTY_TYPE_PARAMETER_ERROR
• KT-63988 K2: Reflection cannot find type of local class of local class
• KT-63901 K2: Different naming of inner class in metadata
• KT-63655 K2: incorrect short class name in metadata for anonymous object inside a local class
• KT-59664 Inline modifier can be added to a constructor parameter, but it does not have any effect
• KT-59418 K2: Missing DUPLICATE_PARAMETER_NAME_IN_FUNCTION_TYPE
• KT-63612 K2: Class is not abstract and does not implement abstract member
• KT-63737 Wasm: revise external declaration FE checker for WASI mode
• KT-59782 K2: Forbid local delegated properties with private accessors in public inline functions
• KT-65482 K2: NoSuchFieldError due to using unboxed type
• KT-61182 Unit conversion is accidentally allowed to be used for expressions on variables + invoke resolution
• KT-62998 Forbid assignment of a nullable to a not-null Java field as a selector of unsafe assignment
• KT-63208 K2: Implement deprecation cycle and fix missing errors for error-level nullable arguments of warning-level Java types
• KT-57600 Forbid overriding of Java method with raw-typed parameter with generic typed parameter
• KT-63147 K2: False negative DSL_SCOPE_VIOLATION when member is annotated with @LowPriorityInOverloadResolution
• KT-62134 K2: handle non-simple types during FirStatusResolver.isPrivateToThis check
• KT-42020 Psi2ir: IllegalStateException: "IrSimpleFunctionPublicSymbolImpl for public [...] is already bound" on generic function whose substitution leads to IdSignature clash
• KT-59012 K2: Support inferring types based on self upper bounds
• KT-65373 K2: there is a crash in KJK hierarchy with an extension member property
• KT-65456 K1: ISE "Property has no getter" with -Xsam-conversions=class when Java SAM interface contains a field
• KT-62884 K2: different signature of delegate object for generic extension property
• KT-60581 K2 fails with New inference error for assertThat under strange circumstances
• KT-59630 K2: Implement running FIR Blackbox tests on different JDKs
• KT-64944 Can't assign null after early return smart cast with typed destructive assignment
• KT-64910 K2: AA FIR: KtCall's argument mapping misses SAM conversion argument
• KT-65165 K2: "ClassCastException: class java.lang.String cannot be cast to class SampleClass"
• KT-64982 K2: false negative FUNCTION_CALL_EXPECTED
• KT-65318 K2: Substitution stackoverflow on jspecify @NullMarked superclass
• KT-65010 Kotlin/Native: code generation for a static field is failing
• KT-57299 K2: VerifyError due to overriding final method size on a subclass of Collection and Set
• KT-64706 K2: Type inference cannot resolve nullable @Composable lambda
• KT-65058 K2: Protected function call from public-API inline function is prohibited in anonymous object
• KT-65316 K2: False positive USAGE_IS_NOT_INLINABLE for expression labeled with illegal label
• KT-60958 K2: smart cast does not work with definite return from if block
• KT-63151 K2: Assignment within function lambda should invalidate contract DFA implications
• KT-63351 K2. No smart cast with not-null assertion operator after a safe call
• KT-65324 atomicfu-plugin: top-level delegated properties cause NPE
• KT-60246 K2: origin is not set for getting array element operator
• KT-64387 K2: Missing POSTFIX_INC/DEC origin for array element inc/dec
• KT-61891 K2: POSTFIX_{INCR|DECR} of global misses an origin
• KT-65019 K2: unexpected exception when executing inc/dec in finally block on WASM
• KT-64392 Factor out KLIB serialization logic from the backend.native module
• KT-65270 K2: Missing ACTUAL_WITHOUT_EXPECT when expect is fake-override
• KT-60367 K2: Support EXPECT_AND_ACTUAL_IN_THE_SAME_MODULE diagnostics
• KT-62704 Absent testrunner FirLightTreeDiagnosticTestSpecGenerated
• KT-65044 K2 compiler crash on unresolved delegated extention receiver
• KT-65021 K2: Missing error and miscompilation in destructuring declaration delegation
• KT-63899 K2: Vararg parameter misses annotation in metadata
• KT-60175 JVM IR inline: accidental reification of typeOf type argument
• KT-65336 K2: Space build fails
• KT-59683 K2: Add control flow graph to FirScript
• KT-63434 K2. False positive Cannot access with protected nested classifiers references inside anonymous object inherited from containing class
• KT-64222 K2: "return type is not a subtype of the return type of the overridden member"
• KT-64314 K2: Rename FirConstExpression to FirLiteralExpression
• KT-64975 FIR: Deserialize enum entry annotation arguments from binary libraries with lookup tags instead of symbols
• KT-63646 K2: "IllegalStateException: Return type of provideDelegate is expected to be one of the type variables of a candidate, but D was found"
• KT-65024 K2: kotlin.NotImplementedError: An operation is not implemented in the K2 QGs
• KT-63994 K2: Investigate K2 failures in IntelliJ-Rust plugin
• KT-64268 K2: Data-flow from nested lambda not passed to outer lambda
• KT-59729 K2: Investigate CFG buildings for inner lambdas in case of double-lambda builder inference
• KT-63042 K2: proper processing of propagated annotations
• KT-64841 K2: argument type mismatch with type parameter with recursive bound
• KT-62554 K2: incorrect "inherits multiple implementations" error when base Java method takes a parameter of primitive wrapper type
• KT-65093 K2: Super constructor call able to access uninitialized object fields
• KT-56489 K2 allows reading uninitialized variable in object declaration
• KT-59987 K2: Disappeared REIFIED_TYPE_FORBIDDEN_SUBSTITUTION
• KT-36786 Smartcast doesn't work in case of property infix call
• KT-65027 K2: java.lang.NoSuchMethodError: void org.jetbrains.kotlin.name.CallableId in the K2 QG
• KT-65056 IrFakeOverrideBuilder: ISE "No override for FUN" on package-private Java method in K-J-K hierarchy
• KT-63414 K2 / Contracts: false positive "Result has wrong invocation kind" when invoking a function returning a value with contract InvocationKind.EXACTLY_ONCE and try/finally
• KT-64809 K2: Remove the LINK_VIA_SIGNATURES flag from FIR2IR configuration
• KT-62045 IrFakeOverrideBuilder: incorrectly merged fake overrides for Java methods accepting wrapper Double and primitive double
• KT-57640 [K2/N] Investigate behaviour for intersection overrides for properties that have incompatible types
• KT-59371 K2: Missing MISSING_DEPENDENCY_CLASS
• KT-59682 K2: Use proper source for vararg arguments
• KT-64261 K2 / WASM: Extension function with star projection throws "RuntimeError: unreachable"
• KT-64257 K2 QG: kotlin.NotImplementedError: Generation of stubs for class org.jetbrains.kotlin.ir.symbols.impl.IrTypeParameterPublicSymbolImpl is not supported yet
• KT-64844 [K/N] Filecheck test redundant_safepoints.kt fails under linux_x64
• KT-64877 K2: PCLA doesn't allow infer types from value parameter having TV type
• KT-63794 K2: False positive NONE_APPLICABLE on Throws::class
• KT-63781 K2: Generated blocks appear in the IR
• KT-63779 K2: Regression for locations of 'if' statements
• KT-63624 K2: incompatible declaration because of different visibility
• KT-64400 K2: allow to use simple boolean expressions as constants
• KT-65050 K2: IllegalStateException: Captured type for incorporation shouldn't escape from incorporation: CapturedType(out org/jetbrains/plugins/gitlab/mergerequest/api/dto/GitLabMergeRequestShortRestDTO)
• KT-59972 K2: Disappeared EXPRESSION_EXPECTED_PACKAGE_FOUND
• KT-63256 K2: NOT_IDENTITY operator call is illegal in contract description
• KT-61717 K1: Unsound green code with self upper bounds and captured types
• KT-64871 IrFakeOverrideBuilder: ISE "no override for " on HashMap subclass
• KT-58739 K2: Rewrite CallableId.classId to be thread-safe
• KT-64979 K2: Missing REDUNDANT_TYPE_PARCELER when using type alias
• KT-60019 K2: Introduced PARCELER_TYPE_INCOMPATIBLE
• KT-60682 K2: Disappeared DEPRECATION
• KT-62500 K2: origin=GET_PROPERTY is wrongly set to GET_FIELD of backing field inside property's own getter
• KT-64743 K2: Non-expanded type serialized in metadata
• KT-64405 K2: Implement CompileJavaAgainstKotlinTestGenerated for K2
• KT-57094 K1: wrong type inferred for an instance of a local class inside a generic property
• KT-62069 K2: ASSIGNMENT_TYPE_MISMATCH is reported in addition to NO_ELSE_IN_WHEN
• KT-62776 FirLazyResolveContractViolationException: "lazyResolveToPhase(STATUS) cannot be called from a transformer with a phase TYPES" on Java annotation usage
• KT-47313 Change (V)::foo reference resolution when V has a companion
• KT-64837 K2: NPE in fir2ir when generic transitive dependency class is missing
• KT-60260 K2: Implicit coercion to unit is not generated in adapted function reference
• KT-60858 Remove redundant createDeprecatedAnnotation necessary to workaround kotlinx-serialization compilation with native
• KT-64432 Unbound symbol access in Fir2Ir fake override builder
• KT-64466 K2: Delegated method annotations are not copied in IR
• KT-63589 K1: Unsound type inference for unbound callable reference to star-projected class's generic mutable property
• KT-56141 K2: Consider removing skipping diagnostics for DelegatedPropertyConstraintPosition
• KT-60056 K2: Introduced UNRESOLVED_REFERENCE
• KT-61032 K2: False positive “Unused variable” for function callable reference
• KT-64832 K2: False positive "Unused variable" checker report on suspend functional types, on overloaded functional types and on custom invoke operator types
• KT-64771 Investigate subtle FIR_DUMP difference for reversed order analysis
• KT-62584 K2: different signature in subclass of local class declared in extension value getter
• KT-63806 Native / KJS / Wasm: "NullPointerException: accept(...) must not be null"
• KT-59938 K2: Disappeared AMBIGUOUS_ACTUALS
• KT-43713 callsInPlace InvocationKind.EXACTLY_ONCE causes CAPTURED_VAL_INITIALIZATION in constructor
• KT-64645 K2: Missing smartcast caused by typealias that expands to nullable type in upper bound
• KT-64501 K2: False-positive WRONG_INVOCATION_KIND when using default arguments
• KT-63962 K2: "java.lang.IllegalStateException: !"
• KT-63644 K2: Create special IR symbols for fake-overrides in fir2ir in mode with IR f/o generator
• KT-63638 K2: Compiler crashes with "Inline class types should have the same representation"
• KT-36220 NI: false positive NON_APPLICABLE_CALL_FOR_BUILDER_INFERENCE if one use cannot resolve
• KT-64121 K2: Actual modifier is missed on override fun toString() fro value class in native
• KT-63703 K2: Eliminate call to Candidate.usesSAM and samResolver.getFunctionTypeForPossibleSamType in AbstractConeCallConflictResolver.toTypeWithConversion
• KT-61443 K2: Return typeId -1 during JS compilation
• KT-64090 K2: false-positive new inference error on invoking from another module a generic function on Java list type with wildcard type argument bounded by raw-typed Java inner class
• KT-64044 K2: Java mapped method should have a source from Java method, not from mapped Kotlin source class
• KT-39137 Smartcast to wrong nullability with generic type parameter upper bound
• KT-46674 ClassCastException with smartcast if plus operator returns a different type
• KT-64625 [FIR] Infinite recursion in TypeUnificationKt.doUnify() building subset of native stdlib
• KT-59369 K2: Missing BUILDER_INFERENCE_STUB_RECEIVER
• KT-62590 Split expect/actual matcher-checker machinery in two separate components: matcher and checker
• KT-63732 K1: False positive OUTER_CLASS_ARGUMENTS_REQUIRED inside anonymous object
• KT-64644 K2: Compiler crash in FirTypeParameterBoundsChecker
• KT-64312 K2: FirPropertySymbol.hasBackingField() always returns true for properties from other modules
• KT-64420 K2: Wrong module descriptor for builtin classes
• KT-64127 K2: incorrect resolution of inherited members on Java classes inheriting classes from different packages in the presence of identically named classes in the same packages
• KT-63446 IrFakeOverrideBuilder: AbstractMethodError due to missing bridge for generic method in a Java superclass
• KT-63867 K2: Smartcast is allowed inside changing lambda with cycles
• KT-64609 K2: INAPPLICABLE_TARGET_PROPERTY_IMMUTABLE diagnostic is missed for primary constructor properties
• KT-63777 K2: Smartcast is allowed inside changing lambda with bounds
• KT-64059 K2: CYCLIC_INHERITANCE_HIERARCHY while using nested annotation in an outer class declaration
• KT-63528 K2: Missing UNNECESSARY_SAFE_CALL for warning level annotated java declarations
• KT-64607 K2: extension functions on UInt and Number lead to JVM ClassCastException
• KT-63761 K2: False positive "Unresolved reference" caused by object's parameter in enum class which is passed as annotation parameter
• KT-62816 K2: Annotation use site targets printing could be improved in diagnostics' messages
• KT-62815 K2: FIR renderings leak through some diagnostics' message
• KT-35289 Confusing warning message "Duplicate label in when"
• KT-49084 Contracts: error message is unclear
• KT-63228 K2: Upper bound violation diagnostic renders compiler internals about SourceAttribute
• KT-62386 K2: Proofread quotes in diagnostic messages
• KT-64081 K2: Incorrect smartcast candidate calculation in MemberScopeTowerLevel
• KT-32420 Confusing error message "Contracts are allowed only for top-level functions" when contract block is not first expression
• KT-61937 K2: implicit script receiver from ScriptDefinition are not visible for invoke
• KT-58767 Inheritance opt-in enforcement via @SubclassOptInRequired can be avoided with type aliases
• KT-59818 K2: Explore the TODO about suspend functions overridden in Java in FirHelpers
• KT-63233 K2 : false negative Class is not abstract and does not implement abstract member with abstract suspend function
• KT-59344 K2: implement deprecation warnings from KT-53153
• KT-63379 K2. Argument type mismatch on creating functional interface instance with function literal as an argument with in type projection
• KT-64308 K2: prefer call with Unit conversion at lower level to one without Unit conversion at upper level
• KT-64307 K2: prefer function with default arguments at lower level to one without them at upper level during callable reference resolve
• KT-64306 K2: prefer SAM at lower level to a functional type at upper level
• KT-64341 Kotlin/JVM: Missing line number generation for intrinsic comparisons
• KT-64238 Add proper documentation to the IdeCodegenSettings class
• KT-63667 K2/KMP: exception when expect property matched to java field
• KT-59915 K2: Disappeared TOO_MANY_ARGUMENTS
• KT-57755 K2/JVM: Fix computing a "signature" mangled name for the main function
• KT-63645 K2: Replace special f/o symbols with normal ones after actualization
• KT-63076 K2: change in behavior for synthetic properties in Kotlin-Java hierarchy
• KT-63723 Frontend manglers improperly handle error type
• KT-56491 K2: Fix reporting AMBIGUOUS_ANONYMOUS_TYPE_INFERRED if anonymous object is leaked in type argument
• KT-63738 K2: Some declarations are missing in the hierarchy of overridden symbols
• KT-62242 K2: Uniformly treat enum entries as anonymous objects
• KT-62281 K2: build DuckDuckGo Android user project and pass it to CI
• KT-60266 K2: origin is not set for FOR_LOOP_ITERATOR
• KT-59875 K2: Disappeared UNRESOLVED_REFERENCE_WRONG_RECEIVER
• KT-62394 K2: Synthetic property scope doesn't consider java classes in the hierarchy
• KT-62715 K2: Missing WASM_IMPORT_EXPORT_UNSUPPORTED_PARAMETER_TYPE
• KT-62723 K2: Missing WASM_IMPORT_ON_NON_EXTERNAL_DECLARATION
• KT-62722 K2: Missing NESTED_WASM_IMPORT
• KT-62721 K2: Missing WASM_EXPORT_ON_EXTERNAL_DECLARATION
• KT-62720 K2: Missing JS_AND_WASM_EXPORTS_ON_SAME_DECLARATION
• KT-62719 K2: Missing NESTED_WASM_EXPORT
• KT-62718 K2: Missing WASM_IMPORT_EXPORT_UNSUPPORTED_RETURN_TYPE
• KT-62717 K2: Missing WASM_IMPORT_EXPORT_PARAMETER_DEFAULT_VALUE
• KT-62716 K2: Missing WASM_IMPORT_EXPORT_VARARG_PARAMETER
• KT-60225 K2: compiler FIR symbol resolution crash on a call to an extension function whose receiver contains a type parameter with a recursive upper bound
• KT-60090 K2: Introduced DEPRECATED_PARCELER
• KT-59949 K2: Disappeared DEPRECATED_PARCELER
• KT-64045 K2: "Expect declaration * is incompatible with actual" when function parameter names are different
• KT-62018 K2: prohibit suspend-marked anonymous function declarations in statement positions
• KT-63973 K2: "NoSuchElementException: Array is empty" with vararg used within tail recursive function
• KT-61792 KMP: Backend error on @Deprecated usage with DeprecationLevel.HIDDEN in K2
• KT-57788 Fix computing mangled names of types with @EnhancedNullability from IR-based declaration descriptors
• KT-63249 K2: change in annotation resolve when ambiguous
• KT-62553 K2: Add topLevelClassifierPackageNames to symbol name providers
• KT-64148 K2: class cast exception org.jetbrains.kotlin.fir.types.ConeStarProjection
• KT-63665 K2: "NullPointerException" caused by class with the companion object and extra curly brace
• KT-62736 K2: Disappeared NESTED_JS_EXPORT
• KT-62347 Prohibit using property+invoke convention for delegated properties
• KT-59421 K2: Missing CONTEXT_RECEIVERS_WITH_BACKING_FIELD
• KT-59903 K2: Disappeared DELEGATE_SPECIAL_FUNCTION_NONE_APPLICABLE
• KT-54997 Forbid implicit non-public-API accesses from public-API inline function
• KT-34372 Report missed error for virtual inline method in enum classes
• KT-62926 K2: IR has missing receivers during expect-actual matching
• KT-62565 K2 cannot infer type parameters in case of expected functional type
• KT-63328 K2: Top-level properties in scripts can be used while uninitialized
• KT-62120 K2: "NoSuchMethodError: java.lang.String" at runtime on class delegating to Java type
• KT-36876 Smartcast doesn't work when class has property available through the invoke
• KT-63835 K2: metadata compilation with constants is falling for Native
• KT-60251 K2: delegated method are delegating to different methods in hierarchy compared to K1
• KT-63574 K2: "IllegalStateException: IrFieldPublicSymbolImpl for java.nio/ByteOrder.LITTLE_ENDIAN"
• KT-61068 Bounds of type parameters are not enforced during inheritance of inner classes with generic outer classes
• KT-60504 K2: difference between LL FIR and FIR in enhanced return type with annotation
• KT-64147 K2: Generate FIR diagnostics with explicit types
• KT-62961 K2 / KMP: NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS with expect enum class and typealias
• KT-53749 Support builder inference restriction in FIR
• KT-59390 K2: Missing BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION
• KT-61065 K2: @Suppress annotation is ignored inside preconditions of when-clauses
• KT-59368 K2: Missing SUBTYPING_BETWEEN_CONTEXT_RECEIVERS
• KT-64083 K2: "KotlinIllegalArgumentExceptionWithAttachments: Unexpected returnTypeRef. Expected is FirResolvedTypeRef, but was FirJavaTypeRef"
• KT-37308 No smart cast when the null check is performed on a child property through a function with a contract
• KT-62589 K2: Investigate need of non-nullable IdSignature in Fir2IrLazyDeclarations
• KT-59894 K2: Disappeared ANNOTATION_ARGUMENT_MUST_BE_CONST
• KT-63329 K2: difference in SAM-conversion casts generation
• KT-64062 K2 IDE. NPE on typing nullable parameter in return
• KT-61427 K2/MPP/JS does not report Expecting a top level declaration and FIR2IR crashes
• KT-64031 K2: Revise naming in FirBuilderInferenceSession
• KT-55252 Backend Internal error during psi2ir in native compile tasks (NPE in getKlibModuleOrigin)
• KT-50453 Improve builder inference diagnostics with type mismatch due to chosen inapplicable overload
• KT-56949 K2: Builder inference violates upper bound
• KT-63648 K2: values of postponed type variable don't introduce type constraints in extension receiver positions during builder-style type inference
• KT-64028 K2: Investigate questionable condition in FirBuilderInfernceSession
• KT-60031 K2: Introduced NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS
• KT-55809 K2: Support pre-release checks for klibs
• KT-59881 K2: Disappeared UNSUPPORTED
• KT-63448 K2: CONFLICTING_INHERITED_JVM_DECLARATIONS with @JvmField
• KT-63705 False positive UNSAFE_IMPLICIT_INVOKE_CALL after explicit null check of the constructor val property
• KT-63865 K2: "IllegalArgumentException: Failed requirement." caused by lambda parameters with different type in init block
• KT-62036 KMP: consider prohibiting actual fake-override when the corresponding expect class has default arguments
• KT-62609 K2. Type argument inference changed for object of Java class with several common parents
• KT-30369 Smartcasts from safe call + null check don't work if explicit true/false check is used
• KT-30376 Smartcasts don't propagate to the original variable when use not-null assertion or cast expression
• KT-30868 Unsound smartcast if smartcast source and break is placed inside square brackets (indexing expression)
• KT-31053 Nothing? type check isn't equivalent to null check is some places
• KT-29935 Smartcasts don't work if explicit annotated true/false check is used
• KT-30903 Smartcast to null doesn't affect computing of exhaustiveness
• KT-63564 K/Wasm: CompilationException with 2.0.0-Beta1
• KT-63345 K2: FIR2IR chooses an incorrect type for smartcast in case of SAM conversion
• KT-63848 ReflectiveAccessLowering does not count arguments of super-calls
• KT-62544 K2: IllegalAccessError when functional type argument is inferred to package-private type
• KT-61920 K2: False negative CONST_VAL_WITH_NON_CONST_INITIALIZER when initializer is Java field
• KT-63649 K2: Wild card in superclass confuses EXPANSIVE_INHERITANCE checker
• KT-63569 K2: "IllegalStateException: ?!id:1" caused by private function call
• KT-63842 K2: some arguments of annotations on local declarations are unresolved
• KT-63832 K2: missed context during annotation argument resolution for a type alias, init and property receiver
• KT-62559 KMP, K2: prevent reporting ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT twice in CLI
• KT-24652 Elvis with 'break' can produce unsound smartcasts in while-true loop
• KT-28508 Possible unsound smartcast in class initializer
• KT-28759 No not-null smartcast from direct assignment if it's split into declaration and value assignment
• KT-28760 No not-null smartcast from direct assignment of this
• KT-29878 Smartcasts from type check or null check don't work if explicit true check as reference equality is used
• KT-29936 Smartcasts don't work if comparing with return value of some function and explicit true/false check is used
• KT-30317 Smartcast doesn't work if smartcast source is used as an operand of the reference equality
• KT-63071 K2 supports calling functions with the dynamic receiver over Nothing?
• KT-59896 K2: Disappeared WRONG_ANNOTATION_TARGET
• KT-56849 Implement K/Wasm K1 diagnostics in K2
• KT-31636 Expect-actual matching doesn't work for inner/nested classes with explicit constructor using typealiases
• KT-63361 K2: Expected FirResolvedTypeRef for return type of FirDefaultPropertyGetter(SubstitutionOverride(DeclarationSite)) but FirImplicitTypeRefImplWithoutSource found
• KT-62913 Convert DEFAULT_ARGUMENTS_IN_EXPECT_ACTUALIZED_BY_FAKE_OVERRIDE to checking incompatibility
• KT-63550 K2: fake-override in expect covariant override in actual. Move diagnostics from backend to frontend
• KT-62491 K2. No 'when' expression must be exhaustive error when Java sealed class inheritors are not listed in permits clause
• KT-63443 IrFakeOverrideBuilder: ISE "No new fake override recorded" when Java superclass declares abstract toString
• KT-62679 K2: drop ARGUMENTS_OF_ANNOTATIONS phase
• KT-63600 K2: Duplicate WRONG_NULLABILITY_FOR_JAVA_OVERRIDE
• KT-63508 K2: "IllegalArgumentException: Not FirResolvedTypeRef (String) in storeResult" caused by @Deprecated Java function and typo
• KT-63656 K2: "IllegalArgumentException: Local com/example/ should never be used to find its corresponding classifier"
• KT-63459 K2: OPT_IN_USAGE_ERROR is absent when calling the enum primary constructor
• KT-59582 OPT_IN_MARKER_CAN_ONLY_BE_USED_AS_ANNOTATION_OR_ARGUMENT_IN_OPT_IN on an annotation import
• KT-60614 K2: Conflicting INVISIBLE_REFERENCE and UNRESOLVED_REFERENCE reported depending on FIR test for transitive friend module dependencies
• KT-59983 K2: Disappeared IMPLEMENTATION_BY_DELEGATION_IN_EXPECT_CLASS
• KT-63068 K2 supports typeRef-name labels
• KT-63642 JVM_IR: don't generate reflective access to getter/setter without property
• KT-62212 K2: require matching of suspend status for override check
• KT-60983 K2: "Argument type mismatch: actual type is android/view/View.OnApplyWindowInsetsListener but androidx/core/view/OnApplyWindowInsetsListener? was expected"
• KT-63597 JVM_IR: Properly handle type parameters of outer declaration in code fragment
• KT-59913 K2: Disappeared UNSUPPORTED_FEATURE
• KT-63593 K2: FIR2IR converts arguments of array set call for dynamic receiver twice
• KT-63317 K2: Disallow generic types in contract type assertions
• KT-59922 K2: Disappeared CANNOT_CHECK_FOR_ERASED
• KT-59561 K2/MPP reports INCOMPATIBLE_MATCHING when an actual annotation declaration with vararg property is typealias with @Suppress
• KT-63241 IJ monorepo K2 QG: backward-incompatible compiler ABI change leads to run-time failures of Fleet's kotlinc plugins
• KT-55318 Redundant variance projection causes wrong signature in klib
• KT-57513 K2: Bound smart casts don't work with Strings
• KT-59988 K2: Disappeared TYPE_ARGUMENTS_NOT_ALLOWED
• KT-59936 K2: Disappeared ARGUMENT_PASSED_TWICE
• KT-61959 K2: Type parameters from outer class leak to nested class
• KT-58094 K2: Review IrBuiltinsOverFir
• KT-63522 K2: wrong context for delegated field type
• KT-63454 Properly check that inline fun is in the same module as callee in IrSourceCompilerForInline
• KT-59951 K2: Disappeared NO_TYPE_ARGUMENTS_ON_RHS
• KT-62727 K2: Missing JSCODE_UNSUPPORTED_FUNCTION_KIND
• KT-62726 K2: Missing JSCODE_WRONG_CONTEXT
• KT-62725 K2: Missing JSCODE_INVALID_PARAMETER_NAME
• KT-62314 Make usages of JavaTypeParameterStack safe
• KT-60924 FIR2IR: Get rid of all unsafe usages of IrSymbol.owner
• KT-59402 K2: Missing EXPANSIVE_INHERITANCE and EXPANSIVE_INHERITANCE_IN_JAVA
• KT-57949 FIR: SignatureEnhancement: mutation of java enum entry
• KT-62724 K2: Missing WRONG_JS_FUN_TARGET
• KT-62856 K2: Don't create IR declaration when its symbol is accessed in fir2ir
• KT-61329 K2: Review for diagnostic messages reported by CLI arguments processing
• KT-58953 K2 doesn't work with Compose Multiplatform
• KT-63599 False negative WRONG_NULLABILITY_FOR_JAVA_OVERRIDE when Java parameter is warning-severity not-null and override isn't a DNN
• KT-62711 Incorrect ParsedCodeMetaInfo instances
• KT-63122 K2: Improve 'EVALUATION_ERROR' messages
• KT-63164 K2/JVM: compiler codegen crash on invisible property IllegalStateException: Fake override should have at least one overridden descriptor
• KT-56614 K2: Incorrect overload resolution with SAM types
• KT-62783 K2: False positive CAST_NEVER_SUCCEEDS when casting nullable expression to it's non-nullable generic base class
• KT-47931 FIR DFA: smartcast not working for if (x!=null || x!=null && x!=null) {}
• KT-62735 K2: Disappeared EXTERNAL_CLASS_CONSTRUCTOR_PROPERTY_PARAMETER
• KT-62733 K2: Disappeared WRONG_EXTERNAL_DECLARATION
• KT-62734 K2: Disappeared INLINE_EXTERNAL_DECLARATION
• KT-62618 K2: Fix the ensureAllMessagesPresent test
• KT-60312 K2: CCE “class [I cannot be cast to class java.lang.Number ([I and java.lang.Number are in module java.base of loader 'bootstrap')” on using IntArray as vararg
• KT-58531 K2: "Property must be initialized" compile error
• KT-54064 K2. Conflicting declarations error differs for k1 and k2
• KT-52432 Using the IDE compiled with K2 (useFir) throws VerifyError exception
• KT-59825 K2: Fix the TODO about wasExperimentalMarkerClasses in FirSinceKotlinHelpers
• KT-26045 False positive DUPLICATE_LABEL_IN_WHEN for safe calls
• KT-59514 K2: New inference error with jspecify and Java interop
• KT-63094 K2: Exception from fir2ir during conversion data class with property of dynamic type
• KT-59822 K2: Fix the TODO in FirConstChecks
• KT-59493 Definitely non-nullable types have type inference issues with extension functions
• KT-63396 K2: property from companion object are unresolved as an annotation argument in type parameter
• KT-62925 K2: Disappeared EXPOSED_FUNCTION_RETURN_TYPE for package-private and type args
• KT-63430 IrFakeOverrideBuilder: VerifyError on calling a function with a context receiver from a superclass
• KT-58754 "Not enough information to infer type variable for subcalls of if expression" when adding curly braces to a conditional inside a lazy property
• KT-54067 K1 with NI: false positive UPPER_BOUND_VIOLATED in typealias constructor
• KT-62420 K2: Remove ConeClassifierLookupTag from ConeTypeVariableTypeConstructor
• KT-63431 K1: Incorrect resolution of call to Java class that extends CharSequence and inherits a get(int): Char method
• KT-55288 False negative WRONG_ANNOTATION_TARGET on type under a nullability qualifier
• KT-61459 K2: type parameters cannot be parameterized with type arguments
• KT-59998 K2: Disappeared OPT_IN_MARKER_CAN_ONLY_BE_USED_AS_ANNOTATION_OR_ARGUMENT_IN_OPT_IN
• KT-53308 TYPE_MISMATCH: Contracts on boolean expression has no effect on referential equality to null
• KT-51160 Type mismatch with contracts on narrowing sealed hierarchy fail to smart cast
• KT-49696 Smart cast to non-null with inline non-modifying closures sometimes doesn't work
• KT-46586 SMARTCAST_IMPOSSIBLE when assigning value inside lambda instead of if expression
• KT-41728 False positive no smart cast with unreachable code after return in if expression
• KT-59482 K2: build kmm-production-sample
• KT-57529 K1/K2: "IllegalStateException: not identifier: " with hard keywords in angle brackets
• KT-62032 K2: Render flexible types as A..B instead of cryptic ft<A, B> in diagnostic messages
• KT-59940 K2: Disappeared ACTUAL_ANNOTATION_CONFLICTING_DEFAULT_ARGUMENT_VALUE
• KT-59401 K2: Missing ADAPTED_CALLABLE_REFERENCE_AGAINST_REFLECTION_TYPE
• KT-56081 K2: build kotlinx.serialization
• KT-63172 K2: Java vararg setter should not be used as property accessor
• KT-61243 K2: Always use declaredMemberScope-s in FirConflictsHelpers instead of declarations
• KT-59430 K2: Missing CALLABLE_REFERENCE_RESOLUTION_AMBIGUITY
• KT-62306 K2: Compiler internal error for incorrect call on ILT
• KT-61592 kt57320.kt weird diagnostic range for NO_ACTUAL_FOR_EXPECT
• KT-62334 K2: FIR should not generate delegated functions for methods from java interface with default implementation
• KT-60294 K2: lambda inside object capturing this, when not in K1
• KT-59590 JVM IR: NotImplementedError during rendering of conflicting JVM signatures diagnostic
• KT-62607 K2: "Overload resolution ambiguity between candidates"
• KT-55096 K2: false-positive smartcast after equals check with reassignment in RHS of ==
• KT-63002 K2: Fix flaky FirPsiOldFrontendDiagnosticsTestGenerated.Tests.Annotations#testAnnotatedErrorTypeRef
• KT-62916 K2: False positive INCOMPATIBLE_MATCHING
• KT-45687 Contract doesn't allow smart cast when implicit receiver and inference target is this
• KT-62137 Compiler fails on null tracking (inference) for safe call
• KT-36976 FIR: Provide exact smart casting type
• KT-60004 K2: Disappeared CONTRACT_NOT_ALLOWED
• KT-62404 K2 Scripting for gradle: unresolved name errors on implicit imports
• KT-62197 K2 and Apache Commons's MutableLong: Overload resolution ambiguity between candidates
• KT-59890 K2: Disappeared CONST_VAL_WITH_NON_CONST_INITIALIZER
• KT-53551 suspend functional type with context receiver causes ClassCastException
• KT-61491 K2 AA: Multiple FIR declarations for the same delegated property
• KT-55965 K2: NPE via usage of functions that return Nothing but have no return expressions
• KT-60942 K2: Transitive dependency IR is not deserialized correctly
• KT-55319 K2: False negative NON_LOCAL_RETURN_NOT_ALLOWED for non-local returns example
• KT-59884 K2: Disappeared NON_LOCAL_RETURN_NOT_ALLOWED
• KT-61942 K2 + kotlinx.serialization: Incorrect 'Conflicting declarations' on only one declaration
• KT-62944 K2: Symbols with context receiver shouldn't be rendered with line break
• KT-59977 K2: Disappeared NO_ACTUAL_FOR_EXPECT
• KT-60117 K2: ISE “Cannot serialize error type: ERROR CLASS: Cannot infer variable type without initializer / getter / delegate” on compiling lateinit property without initialization
• KT-60042 K2: Introduced PRIMARY_CONSTRUCTOR_REQUIRED_FOR_DATA_CLASS
• KT-62467 K2: Result type of elvis operator should be flexible if rhs is flexible
• KT-62126 KJS / K2: "InterpreterError: VALUE_PARAMETER" caused by reflection, delegation and languageVersion = 1.9
• KT-56615 K2: False-negative USELESS_CAST after double smartcast
• KT-59820 K2: Investigate the TODO in FirCastDiagnosticsHelpers
• KT-61100 K2: wrong type for "value" parameter of java annotation constructor
• KT-59996 K2: Disappeared INVALID_CHARACTERS
• KT-62598 K2: SOE through JvmBinaryAnnotationDeserializer with nested annotation with value parameter in other module
• KT-59070 K1: Unbound private symbol with mixed Java/Kotlin hierarchy
• KT-60095 K2: Introduced INCOMPATIBLE_TYPES
• KT-61598 K2: report IR_WITH_UNSTABLE_ABI_COMPILED_CLASS
• KT-42625 "Unresolved reference" when star import packages with conflicting entries
• KT-60123 K2: PROPERTY_WITH_NO_TYPE_NO_INITIALIZER isn't working in IDE for lateinit property without a type
• KT-59935 K2: Disappeared PROPERTY_WITH_NO_TYPE_NO_INITIALIZER
• KT-57931 K1: unsafe assignment of nullable values to not-null Java fields via safe access operator
• KT-59992 K2: Disappeared KCLASS_WITH_NULLABLE_TYPE_PARAMETER_IN_SIGNATURE
• KT-58455 K2(LT). Internal compiler error "UninitializedPropertyAccessException: lateinit property identifier has not been initialized" on missing type parameter in "where" constraint
• KT-60714 K2: Implement resolve to private members from Evaluator in K2
• KT-59577 K2. Enum constant name is not specified in error text
• KT-60003 K2: Disappeared INVALID_CHARACTERS_NATIVE_ERROR
• KT-62099 K2: "Type arguments should be specified for an outer class" error about typealias
• KT-60111 K2: Location regressions for operators
• KT-59974 K2: Disappeared INAPPLICABLE_INFIX_MODIFIER
• KT-59399 K2: Missing JSCODE_NO_JAVASCRIPT_PRODUCED
• KT-59388 K2: Missing JSCODE_ERROR
• KT-59435 K2: Missing JSCODE_ARGUMENT_SHOULD_BE_CONSTANT
• KT-59991 K2: Disappeared FORBIDDEN_VARARG_PARAMETER_TYPE
• KT-60601 K2 / Maven: Overload resolution ambiguity between candidates inline method
• KT-59973 K2: Disappeared INAPPLICABLE_LATEINIT_MODIFIER
• KT-59933 K2: Disappeared USAGE_IS_NOT_INLINABLE
• KT-60778 K2: implement MISSING_DEPENDENCY_CLASS(_SUPERCLASS) errors
• KT-62581 K2: Difference in kind flag in metadata
• KT-59967 K2: Disappeared UNINITIALIZED_ENUM_ENTRY
• KT-59956 K2: Disappeared INAPPLICABLE_OPERATOR_MODIFIER
• KT-35913 Diagnostic error VAL_REASSIGNMENT is not reported multiple times
• KT-60059 K2: Introduced VAL_REASSIGNMENT
• KT-59945 K2: Disappeared ANONYMOUS_FUNCTION_WITH_NAME
• KT-62573 K2: incorrect parsing behavior with named functions as expressions
• KT-55484 K2: @OptIn false negative OPT_IN_USAGE_ERROR on equals operator call
• KT-56629 K2: an instance of USELESS_CAST was not moved under EnableDfaWarningsInK2 language feature
• KT-58034 Inconsistent resolve for nested objects in presence of a companion object property with the same name
• KT-59864 K2: Bad locations with delegates
• KT-59584 K2: Bad startOffset for 'this'
• KT-61388 K2: ISE "Annotations are resolved twice" from CompilerRequiredAnnotationsComputationSession on nested annotation
• KT-62628 K2: FirErrorTypeRefImpl doesn't have annotations
• KT-62447 K2. "Replacing annotations in FirErrorTypeRefImpl is not supported" compiler error when annotation is used as variable type or return type
• KT-61055 K2: Investigate if usage of toResolvedCallableSymbol is correct at FirDataFlowAnalyzer#processConditionalContract
• KT-61518 K2: IAE: "Expected type to be resolved" at FirTypeUtilsKt.getResolvedType() on usage of Java annotation with default value for enum array parameter
• KT-61688 K2: FIR renderings of type annotations leak through the diagnostics' messages
• KT-61794 FIR: MergePostponedLambdaExitsNode.flow remains uninitialized after resolve
• KT-59986 K2: Disappeared ITERATOR_MISSING
• KT-57802 K2: Backend Internal error: RecordEnclosingMethodsLowering.kt
• KT-59941 K2: Disappeared COMPONENT_FUNCTION_MISSING
• KT-61076 K2: false-positive conflicting overloads error on suspending function and private Java method from a supertype
• KT-61075 K2: type inference for delegate expressions with complexly bounded type variables fails on properties with annotated accessors
• KT-62671 K2: fir2ir generates a duplicate of delegated function for class from a common module
• KT-62541 K2: Missed type mismatch error
• KT-62585 KMP, K2: fix ugly reporting of annotation arguments in ACTUAL_ANNOTATIONS_NOT_MATCH_EXPECT diagnostic
• KT-62143 Error: Identity equality for arguments of types 'kotlin/Int?' and 'kotlin/Nothing?' is prohibited
• KT-62620 Warn about @OptIn/@Deprecated for overrides of Any
• KT-59689 K2: Fix complex smartcasts with safe calls
• KT-61517 K2: FirModuleDescriptor should correctly provide dependencies from FirModuleData
• KT-62578 K2: @NoInfer annotation doesn't work for deserialized functions
• KT-59916 K2: Disappeared REPEATED_ANNOTATION
• KT-36844 DELEGATE_SPECIAL_FUNCTION_MISSING highlight is missed when Delegate class has getValue property available through the invoke convention
• KT-62450 K2: Disappeared OPT_IN_USAGE_ERROR for a data class property during the destructuring declaration
• KT-59997 K2: Disappeared OPT_IN_USAGE_ERROR
• KT-60026 K2: Introduced EXPOSED_TYPEALIAS_EXPANDED_TYPE
• KT-62393 K2: FIR doesn't count visibility when creating synthetic property override
• KT-61191 K2: Problem with @OptionalExpectation
• KT-61208 EnumEntries mappings are generated incorrectly in the face of incremental compilation
• KT-57811 K2: make java static string and int fields not null
• KT-53982 Keep nullability when approximating local types in public signatures
• KT-62531 InvalidProtocolBufferException on reading module metadata compiled by K2 from compilers earlier than 1.8.20 with -Xskip-metadata-version-check
• KT-61511 IrFakeOverride builder: objc overridability condition is not supported
• KT-62316 K2: CONFLICTING_INHERITED_JVM_DECLARATIONS on List subclass inheriting remove/removeAt from Java superclass
• KT-60671 KMP: check other annotation targets in expect and actual annotations compatibility checker
• KT-62473 K2: @Suppress("UNCHECKED_CAST")` doesn't work on rhs of augmented assignment call
• KT-59433 K2: Missing NESTED_CLASS_ACCESSED_VIA_INSTANCE_REFERENCE
• KT-62451 K2: Disappeared OPT_IN_USAGE_ERROR for typealias
• KT-62452 K2: Violation of OPT_IN_USAGE_ERROR non-propagating opt-in rules for typealias
• KT-59927 K2: Disappeared INVISIBLE_REFERENCE
• KT-60080 K2: Introduced INVISIBLE_SETTER
• KT-60104 K2: Introduced FUNCTION_CALL_EXPECTED
• KT-59979 K2: Disappeared SUPERTYPE_INITIALIZED_IN_EXPECTED_CLASS
• KT-62146 K2: @Suppress does not work with named argument
• KT-62475 K2: IrExternalModuleFragments contains incorrect data in Fir2Ir
• KT-59978 K2: Disappeared EXPECTED_ENUM_ENTRY_WITH_BODY
• KT-59015 K1+NI: "Type mismatch: inferred type is CapturedType(*) but Xy was expected" with star projection callable reference to extension function
• KT-61983 K2: *fir.kt.txt dump uses different naming approach for local vars
• KT-59970 K2: Disappeared NULLABLE_TYPE_IN_CLASS_LITERAL_LHS
• KT-58216 K2 (2.0): when is not checked for exhaustiveness with Java sealed class
• KT-61205 Compose Compiler K2/ios: No file for /App|App(){}[0] when running linkPodDebugFrameworkIosX64
• KT-58087 Unexpected type mismatch after nullable captured type approximation
• KT-58240 Support running irText compiler tests against the Native backend
• KT-59565 K2. Internal error "IndexOutOfBoundsException: Index -1 out of bounds for length 0" on incorrect usage of annotation in type parameter
• KT-59954 K2: Disappeared REPEATED_MODIFIER
• KT-57100 K2 does not report Conflicting overloads and backend crashes with Exception during IR lowering on conflict overloading with suspend function
• KT-59955 K2: Disappeared INCOMPATIBLE_MODIFIERS
• KT-61572 [K2/N] Missing diagnostic SUPER_CALL_WITH_DEFAULT_PARAMETERS in test for MPP supercall with default params
• KT-62262 [K2/N] tests/samples/uikit compilation fails with NPE in checkCanGenerateOverrideInit
• KT-62114 K2: Unresolved reference for smart cast inside when (but not if)
• KT-59373 K2: Missing INVISIBLE_MEMBER
• KT-61844 K2: "Expression * of type * cannot be invoked as a function" caused by private property
• KT-61735 [FIR] Assignment to val with flexible type dispatch receiver causes crash
• KT-59942 K2: Disappeared ANNOTATION_PARAMETER_DEFAULT_VALUE_MUST_BE_CONSTANT
• KT-62058 K2: use PRE_RELEASE flag until 2.0-RC
• KT-59931 K2: Disappeared CLASS_LITERAL_LHS_NOT_A_CLASS
• KT-62104 K2: fix failing tests caused by KT-59940
• KT-61974 K2: "ClassCastException: class cannot be cast to class java.lang.Void" in test
• KT-61637 K2: Store all IR declarations inside Fir2IrDeclarationStorage
• KT-60921 K2: IndexOutOfBoundsException on attempt to cast an element to inner class with type parameter
• KT-59429 K2: Missing ABBREVIATED_NOTHING_RETURN_TYPE
• KT-59420 K2: Missing ABBREVIATED_NOTHING_PROPERTY_TYPE
• KT-59965 K2: Disappeared CANNOT_ALL_UNDER_IMPORT_FROM_SINGLETON
• KT-59952 K2: Disappeared EXPOSED_PROPERTY_TYPE_IN_CONSTRUCTOR_ERROR
• KT-61732 K2: Analysis API: resolve ambiguities in kotlin project
• KT-60499 K2: Order of synthetic fields is different from K1's order
• KT-61773 K2 Native: support reporting PRE_RELEASE_CLASS
• KT-61578 [FIR] Resolution to private companion objects does not produce INVISIBLE_REFERENCE diagnostic
• KT-59985 K2: Disappeared UNDERSCORE_USAGE_WITHOUT_BACKTICKS
• KT-62031 K2: Render k2-specific flexible types in a more compact way in diagnostic messages
• KT-62030 K2: Render dot-separated FQNs instead of slash-separated ones in diagnostics
• KT-59950 K2: Disappeared ILLEGAL_ESCAPE
• KT-61827 K2: Fix rendering of NO_ACTUAL_CLASS_MEMBER_FOR_EXPECTED_CLASS message
• KT-61386 IrFakeOverrideBuilder: wrong dispatch receiver type
• KT-59907 K2: Disappeared RETURN_TYPE_MISMATCH
• KT-62056 K2: Drop FIR_COMPILED_CLASS error in K1
• KT-61824 K2: Don't render internal compiler type annotations in diagnostic messages
• KT-61826 K2: Fix rendering of SUSPENSION_POINT_INSIDE_CRITICAL_SECTION message
• KT-57858 @PlatformDependent annotation should be considered in JS and Native
• KT-61876 K2: FirCommonSessionFactory does not register visibility checker for a library session
• KT-60264 K2: while loop body block sometimes replaced with single expression
• KT-58542 K2: Store abbreviated types in deserialized declarations as attributes for rendering
• KT-62008 K2: Java getter function may be enhanced twice
• KT-61921 K2: Check for false positive/negative diagnostics caused by wrong handling of typealiases
• KT-41997 False positive "Value class cannot have properties with backing fields" inside expect class
• KT-62017 K2: ISE "No real overrides for FUN FAKE_OVERRIDE" on calling package-private Java method through anonymous object
• KT-58247 Incorrect inference of nullable types inside Optional
• KT-61309 K2: Only named arguments are available for Java annotations
• KT-61366 IrFakeOverrideBuilder ignores package-private visibility
• KT-59899 K2: Disappeared EXPECTED_DECLARATION_WITH_BODY
• KT-59980 K2: Disappeared EXPECTED_ENUM_CONSTRUCTOR
• KT-59982 K2: Disappeared EXPECTED_CLASS_CONSTRUCTOR_PROPERTY_PARAMETER
• KT-61499 K2: False positive "Const 'val' initializer should be a constant value" when using typealias
• KT-62005 K2: No conflicting declarations error for constructors of nested classes and member functions
• KT-60092 K2: Introduced EXPOSED_PROPERTY_TYPE_IN_CONSTRUCTOR_ERROR
• KT-61972 K2: FIR2IR crashes on converting data classes in MPP setup
• KT-60105 K2: Introduced UNDERSCORE_USAGE_WITHOUT_BACKTICKS
• KT-60075 K2: Introduced ACTUAL_WITHOUT_EXPECT
• KT-29316 Change diagnostics strategy for equality-operators applicability
• KT-61751 IrFakeOverrideBuilder: keep flexible type annotations when remapping/substituting types
• KT-61778 K2: Overload resolution ambiguity between expect and non-expect in native build
• KT-57703 K1/K2: unprecise constraint system behavior around integer literals and comparable arrays
• KT-61367 K2: Introduce OptIn for FirExpression.coneTypeOrNull
• KT-61802 K2: infinite recursion in constant evaluator causing StackOverflowError
• KT-60043 K2: Introduced PROPERTY_AS_OPERATOR
• KT-61829 K2. Internal error, FileAnalysisException when type argument doesn't conform expected type
• KT-61691 K2: This annotation is not applicable to target 'local variable'
• KT-59925 K2: Disappeared VIRTUAL_MEMBER_HIDDEN
• KT-61173 K2: FirProperty.hasBackingField is true for an expect val
• KT-61696 K2: Cannot override method of interface if superclass has package-protected method with same signature
• KT-59370 K2: Missing JS_NAME_CLASH
• KT-36056 [FIR] Fix implementation of try/catch/finally in DFA
• KT-61719 K2. Invisible reference is shown for whole type reference instead of single name reference
• KT-35566 False negative UPPER_BOUND_VIOLATED in a supertype of an inner class
• KT-60248 K2: Type abbreviations are not stored in IR
• KT-61720 K2: Delegates: Property type not specialised in property reference of setter
• KT-59251 KMP/JS: forbid matching actual callable with dynamic return type to expect callable with non-dynamic return type
• KT-61510 K2: internal declarations are invisible in cyclically dependent modules
• KT-54890 FIR: fix resolve contract violations in FIR
• KT-60048 K2: Introduced MISSING_EXCEPTION_IN_THROWS_ON_SUSPEND
• KT-59425 K2: Missing JS_FAKE_NAME_CLASH
• KT-59529 K2: "property delegate must have" caused by class hierarchy
• KT-55471 K2. Unresolved reference for nested type is shown instead of outer class
• KT-58896 K2: Higher priority expect overload candidates in common code lose in overload resolution to non-expects
• KT-60780 K2: missing PRE_RELEASE_CLASS
• KT-59855 K2: Replace FirExpression.typeRef with coneType
• KT-53565 K2: no WRONG_ANNOTATION_TARGET on when subject
• KT-54568 K2: Type variables leak into implicit it parameter of lambdas
• KT-60892 K2: Implement diagnostics around @OptionalExpectation
• KT-60917 K2: "Unresolved reference" for operator for array value
• KT-59367 K2: Missing MIXING_SUSPEND_AND_NON_SUSPEND_SUPERTYPES
• KT-60268 K2: lazy annotation classes have wrong modality
• KT-60536 K2: FIR2IR Crash when resolving to companion of internal class with Suppress("INVISIBLE_REFERENCE")
• KT-60292 K2: annotations on local delegated properties are lost
• KT-59422 K2: Missing NON_SOURCE_ANNOTATION_ON_INLINED_LAMBDA_EXPRESSION
• KT-61407 K2: java.lang.IllegalArgumentException: Stability for initialized variable always should be computable
• KT-59186 K2: False negative CONFLICTING_OVERLOADS in nested functions
• KT-54390 K2: ClassId for local classes do not match with specification
• KT-61277 K2: Expand the MIXING_SUSPEND_AND_NON_SUSPEND_SUPERTYPES check to other function kinds
• KT-61548 Compiler crashes with StackOverflowError when mapping types
• KT-56757 Drop IGNORE_BACKEND_K2_LIGHT_TREE directive
• KT-61330 K2: No BinarySourceElement for system libraries
• KT-61166 Inherited platform declaration clash & accidental override
• KT-58764 [K2] Make FirResolvedDeclarationStatus.modality not nullable
• KT-61576 [FIR] Private type alias for public class constructor is always visible
• KT-46031 False negative SEALED_INHERITOR_IN_DIFFERENT_MODULE in bamboo HMPP hierarchy
• KT-59804 K2: Repeat the SealedInheritorInSameModuleChecker HMPP logic
• KT-59900 K2: Disappeared NESTED_CLASS_NOT_ALLOWED
• KT-61067 K2. No Assignments are not expressions
• KT-61144 FIR2IR: Fix field access for class context receiver from debugger evaluator in K2
• KT-59914 K2: Disappeared RETURN_NOT_ALLOWED
• KT-60136 Wrong IR is generated for spread call in annotation call when annotation has a vararg parameter
• KT-56872 K2: not all reassignments, operator assignments, increments, decrements are tracked in DFA for try/catch expressions
• KT-60397 K2/MPP: don't perform enhancement twice when Java method is called from different modules
• KT-61640 K2: Share declarations from JvmMappedScope between sessions in MPP scenario
• KT-59051 "ISE: IrSimpleFunctionSymbolImpl is already bound" when implementing multiple interfaces by delegation where one of them overrides equals/hashCode
• KT-60380 K2: IAE: class org.jetbrains.kotlin.psi.KtLambdaArgument is not a subtype of class org.jetbrains.kotlin.psi.KtExpression for factory TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM
• KT-60795 K2: missing INCOMPATIBLE_CLASS and corresponding CLI error
• KT-59650 K2: Get rid of FirNoReceiverExpression
• KT-60555 K2. FirJavaClass source field is null
• KT-61045 K2: Missing return from DELEGATED_PROPERTY_ACCESSOR setter
• KT-60636 KMP: K2 handling of actual typealiases to nullable types
• KT-59815 K2: Avoid recomputing argumentVariables
• KT-61409 Kotlin/Native: crash in kmm-production-sample (compose-app) with escape analysis enabled
• KT-61348 K2: Refactor FIR2IR declaration storages
• KT-54905 KLIB check on compiled with pre-release version
• KT-61249 Move fir-related code from backend.native module
• KT-59478 K2: StackOverflowError on invalid code with nullable unresolved
• KT-59893 K2: Disappeared WRONG_NUMBER_OF_TYPE_ARGUMENTS
• KT-60450 K2: IOOBE from analyzeAndGetLambdaReturnArguments
• KT-57076 K2 does not report 'More than one overridden descriptor declares a default value'
• KT-55672 K2. Operator name message instead of "Unresolved reference" when operator isn't defined for type
• KT-61454 K1: False positive WRONG_NUMBER_OF_TYPE_ARGUMENTS when typealias is LHS of class literal
• KT-60252 K2: Supertype argument is not substituted in fake override receivers and value parameters
• KT-60687 K2: Introduced UNEXPECTED_SAFE_CALL
• KT-61312 K2: Remove FirExpression.typeRef completely when Compose was migrated
• KT-60602 Fix scripting tests in 2.0 branch
• KT-60771 K2: "Conflicting declarations". Unable to re-declare variable if the first one comes from a destructured element
• KT-60760 K2: Every FirFunctionCall has an implicit type reference which points to the return type declaration
• KT-59944 K2: Disappeared NON_MEMBER_FUNCTION_NO_BODY
• KT-60936 KMP: check annotations compatibility on members inside expect and actual class scopes
• KT-60668 KMP: check expect and actual annotations match when actual method is fake override
• KT-60250 K2: origin is set too many times for elvis operator
• KT-60254 K2: Extra unset type argument on Java field reference
• KT-60245 K2: Extra return is generated in always throwing function
• KT-59407 K2: Missing MISSING_CONSTRUCTOR_KEYWORD
• KT-57681 Request review for all FIR diagnostic messages
• KT-60885 K2: Fix testSelfUpperBoundInference test in LV 2.0 branch
• KT-59957 K2: Missing UNSUPPORTED_SEALED_FUN_INTERFACE
• KT-60000 K2: Missing UNSUPPORTED_INHERITANCE_FROM_JAVA_MEMBER_REFERENCING_KOTLIN_FUNCTION
• KT-60886 K2: Fix testDirectoryWithRelativePath in LV 2.0 branch
• KT-59419 K2: Missing MULTIPLE_DEFAULTS_INHERITED_FROM_SUPERTYPES_WHEN_NO_EXPLICIT_OVERRIDE
• KT-59748 K2: Return type mismatch: expected Unit, actual Any? for when with an assignment in branch
• KT-60297 K2: finally block is not coerced to unit
• KT-59860 [FIR] False-positive UNEXPECTED_SAFE_CALL
• KT-46794 Contract not working with extension function in class
• KT-59101 Contract not smartcasting for private extension functions inside class
• KT-59387 K2: Missing NO_CONSTRUCTOR
• KT-22499 Missing error on 'x == y' for different numeric types inferred from smart casts
• KT-56867 Green in K1 -> red in K2 for unsound code. catch_end to good_finally data flow
• KT-57526 K1: "NullPointerException: Cannot invoke "com.intellij.psi.PsiElement.getParent()" because "current" is null" with label
• KT-46383 EQUALITY_NOT_APPLICABLE is not taking smart cast into consideration in if block
• KT-32575 Bound smartcasts in contracts
• KT-58331 Erroneous suspend conversion on anonymous function should not affect call resolution
• KT-37591 Deprecate cases in FE 1.0 when companion property is prioritized against enum entry
• KT-53210 OVERLOAD_RESOLUTION_AMBIGUITY when lambda with single argument it is involved
• KT-51796 False positive smart cast after safe call to contract function with nullable receiver
• KT-52782 Receiver type mismatch error due to ProperTypeInferenceConstraintsProcessing compiler feature
• KT-57308 Incorrect property type inference after contracted smart cast of generic type
• KT-18130 Smart cast can be broken by expression in string template
• KT-21915 Generic parameter of a reference gets wrongly smart-casted after a cast
• KT-22454 Unsound smartcast in nested loops with labeled break from while-true
• KT-17694 Smart cast impossible on var declared in init block with a secondary constructor
• KT-47895 NullPointerException in PSICallResolver.resolveToDeprecatedMod with incorrect loop range
• KT-47378 Missed FUNCTION_CALL_EXPECTED diagnostic on wrong code with callable reference
• KT-43408 False positive CAPTURED_VAL_INITIALIZATION on crossinline val property initialization with EXACTLY_ONCE lambda call from the init block
• KT-35565 False negative UNINITIALIZED_VARIABLE, VAL_REASSIGNMENT, and INVISIBLE_SETTER errors in unreachable code block
• KT-10420 Shadowed variable declaration in inner function makes compiler behave strange
• KT-49881 "AssertionError: Base expression was not processed: POSTFIX_EXPRESSION" when analyzing dangling [bracketed] expression with postfix
• KT-53847 Missed USAGE_IS_NOT_INLINABLE when using runCatching with the inline function's functional argument as a receiver
• KT-53802 No smartcast after a while (true) infinite loop with break
• KT-27754 Stack Overflow Error in pseudocode analysis
• KT-41131 Error: java.lang.AssertionError: Rewrite at slice LEAKING_THIS when invoking non final constructor property in init block
• KT-42962 False positive "ACCIDENTAL_OVERRIDE" when field name annotated with @JvmField conflicts with getter/setter from Java
• KT-49507 JVM: "IllegalAccessError: class X tried to access private field" with same-named Kotlin property and Java base class field
• KT-35752 "AE: Recursion detected in a lazy value" with type alias and inner class from another module
• KT-28333 Smartcast is wrong if while(true) and break as a part of expression is used (possible NPE)
• KT-28489 Smartcast is wrong if not-null assertion in while condition + break to the parent while is used (produces NPE)
• KT-28369 Var not-null smartcasts are wrong if reassignments are used inside another expressions
• KT-26612 Smartcast don't work in not-null checks + NotNull contract
• KT-7676 Redundant cast of var is not redundant?
• KT-51984 Cannot use x == null when Java class X declares equals(@NonNull)
• KT-56249 No method equals for HttpMethod in Spring Boot 3
• KT-56264 incorrect type inference/smart cast for exhaustive try catch
• KT-24565 Incorrect floating point comparisons in constant expressions
• KT-54333 False positive CONST_VAL_WITH_NON_CONST_INITIALIZER on negative literals in const vals
• KT-53447 Leaking/unrefined types from main source set when main/test use different library versions
• KT-35981 No smart cast and UNSAFE_CALL error when using not() function instead of inverse operator
• KT-33132 Cannot override the equals operator twice (in a class and its subclass) unless omitting the operator keyword in the subclass
• KT-55335 Don't report SUPERTYPE_NOT_INITIALIZED for annotation supertype, because FINAL_SUPERTYPE is already reported
• KT-27936 Write InnerClasses attribute for all class names used in a class file
• KT-53261 Evaluate effect from inline for primitive types
• KT-31367 IllegalStateException: Concrete fake override public open fun (...) defined in TheIssue[PropertyGetterDescriptorImpl@1a03c376] should have exactly one concrete super-declaration: []

Compose Compiler

New features

• 13b27eb Strong skipping is no longer considered experimental and is safe for use in production. It will become the default behavior in an upcoming release.

Bug fixes

• 868d0ac Ensure that inline body is realized when source information is off b/338179884
• 8a6f64a Generate binary compat stubs for nullable value classes b/335384193
• 154d479 Make sure a composable call does not escape composable lambda b/331365999
• 53f4f37 Make parameter types for inline classes nullable when underlying type is not primitive b/330655412

Docs & Examples

New Features

• KT-66958 [Docs][JVM] Add info about generating lambda functions like the Java compiler by default

Fixes

• KT-63618 [Docs] Create documentation for Kotlin power-assert compiler plugin
• KT-67902 [Docs][Wasm] K/Wasm: support new version of exception handling proposal
• KT-67944 [Docs][K2][IDE] Update IDE support description for K2
• KT-67865 [Docs][K2] update Kotlin Release Page
• KT-66957 [Docs] [Gradle] Build reports are Stable
• KT-67936 [Docs][Build tools] Update KGP variants
• KT-67508 [Docs] Talk about the new Compose Gradle plugin
• KT-67347 Remove docs on dropped K/JS feature "Ignoring compilation errors"
• KT-64710 [Docs] Update What's new for 2.0.0-BetaX
• KT-63001 K2: Organize team-wide talks about new FIR2IR & PCLA
• KT-6259 Docs: add information about default constructor for class

IDE

• KT-50241 Make Symbol Light Classes consistent with Ultra Light Classes
• KT-60318 K2: disable SLC for non-JVM platforms
• KT-56546 LL FIR: fix lazy resolve contract violation in Symbol Light Classes
• KT-55788 [SLC] Declarations with value classes are leaked into light classes
• KT-61195 UAST modeling of implicit it is inconsistent for Enum.entries
• KT-62757 SLC: incorrect nullability annotation on aliased type
• KT-62440 On the fly resolve with light method context doesn't resolve method type parameters
• KT-57550 K2: AA: incorrect constant value in file-level annotation
• KT-61460 SLC: unnecessary upper bound wildcards (w/ type alias)
• KT-61377 K2: SLC: wrong retention counterpart for AnnotationRetention.BINARY

IDE. Gradle Integration

• KT-65617 K/N project import fails if ~/.konan dir is empty
• KT-45775 Improve quality of Import

IDE. JS

• KT-61257 Analysis API:"KotlinIllegalArgumentExceptionWithAttachments: Invalid FirDeclarationOrigin DynamicScope" exception on unsupported JS dynamic usage in scope

IDE. Multiplatform

• KT-45513 Run c-interop generation in parallel during project import
• KT-63007 K2: Analysis API Standalone: klibs are not resovled from common code
• KT-63126 K2: Analysis API Standalone: IllegalStateException from Kotlin/Native klib
• KT-61520 Sources.jar is not imported for common and intermediate source-sets from the MPP library

IDE. Script

• KT-61267 K2 Scripts: dependency issues
• KT-60418 K2 scripting: highlighting sometimes fails
• KT-60987 K2: Analysis API: make build.gradle.kts resolution work on build scripts from kotlin projects

IR. Actualizer

Fixes

• KT-67488 K2: AssertionError No such value argument slot in IrConstructorCallImpl: 0 (total=0
• KT-60847 K2: Fake overrides are incorrect after actualization
• KT-65274 IrFakeOverrideBuilder: ISE: "IrFieldPublicSymbolImpl is already bound"
• KT-63756 K2: "AssertionError: No such value argument slot in IrConstructorCallImpl" caused by actual typealias for annotation with default parameter
• KT-65236 IrFakeOverrideBuilder: ISE: "should not be called"
• KT-65116 K2: IrFakeOverrideBuilder: "No override for FUN" if the function has already been overridden by another class in K <- J<- K <- J hierarchy
• KT-65499 IrFakeOverrideBuilder: ISE IrSimpleFunctionPublicSymbolImpl is already bound for irrelevant 'remove' clashing with a function from Java collection subclass
• KT-64150 IrFakeOverrideBuilder: Fake overrides for static java functions are not generated
• KT-65432 IrFakeOverrideBuilder - No override for FUN IR_EXTERNAL_JAVA_DECLARATION_STUB name:elementData
• KT-64895 K2:IrActualizer corrupts attributeOwnerId value
• KT-58861 K2: Improve the new pipeline of FIR2IR conversion, IR actualization and fake-override generation
• KT-64835 K2: K/JS: Expect declaration is incompatible errors in the K2 QG
• KT-63347 K2: Fix overridden symbols inside LazyDeclarations
• KT-62535 K2: FakeOverrideRebuilder can't handle f/o without overridden symbols
• KT-62292 K2: Extract IrActualizer into separate module
• KT-63442 IrFakeOverrideBuilder: ISE "Multiple overrides" error when function signatures differ only in the type parameter upper bound
• KT-62623 K2: Ir actualizer leaves inconsistent module links from files

IR. Inlining

• KT-66017 K2 / Native: "NoSuchElementException: Sequence contains no element matching the predicate" on building native release binaries
• KT-64868 [K/N] Inlined assert is later not removed, even without -ea
• KT-64807 Refactor InlineFunctionResolver
• KT-64806 Move FunctionInlining to separate module

IR. Interpreter

• KT-64079 Native library evolution behaviour for constants
• KT-62683 K2: FIR2IR: IrConst*Transformer doesn't evaluate an expression for const val initializer

IR. Tree

• KT-66152 IrFakeOverrideBuilder: AssertionError "different length of type parameter lists"
• KT-65971 K2: Investigate diagnostic test failures with IrFakeOverrideBuilder
• KT-64974 Consolidate visibility checks in IrFakeOverrideBuilder
• KT-61360 Fix essential problems in IrFakeOverrideBuilder
• KT-61970 Refactor IR and FIR tree generators to reuse common logic
• KT-61703 Drop the dependency on kotlinpoet for IR tree generation
• KT-63437 IrFakeOverrideBuilder: ISE "Captured Type does not have a classifier" on complex Java hierarchy
• KT-61934 Decouple building fake overrides from symbol table and build scheduling
• KT-60923 IR: Mark IrSymbol.owner with OptIn

JavaScript

New Features

• KT-56206 KJS / Reflection: add KClass.createInstance
• KT-44871 Add @JsExport and @JsName annotations to stdlib classes (especially collections) to avoid method name mangling and improve Kotlin usability from JS
• KT-8373 JS: support ES6 as compilation target
• KT-65168 Introduce an ability to create type-safe JS objects
• KT-45604 KJS / IR: Use globalThis instead of top level this

Fixes

• KT-66922 K2 JS: Intrinsic Float/Double toString producing wrong numbers
• KT-64135 K2 / KJS: Incorrect value class support when used with inline fun
• KT-67978 K2: Declaration of such kind (expect) cannot be exported to JavaScript
• KT-64951 Kotlin-Multiplatform does not allow JSExport of expect
• KT-63038 Compilation of suspend functions into ES2015 generators
• KT-16981 js: Command line arguments passed to main() are always empty
• KT-34995 JS: List, Map, and Set types are hard to use from JS because of mangled member names
• KT-51225 JS IR & Wasm: using nested expect enum entry in a default argument fails
• KT-63907 KJS: default parameters in interfaces are lost in implementations
• KT-64708 KJS: exported interfaces missing __doNotUseOrImplementIt when extending from external types
• KT-62806 KJS: Type mismatch on inferred return type with Nothing
• KT-64421 K2: Implement IrJsTypeScriptExportTestGenerated for K2
• KT-61526 KJS: Compiled files clash with the new per-file granularity
• KT-63359 K2: support new ways to declare TestResult in JS TestGenerator lowering
• KT-61929 KJS: "IllegalStateException: No dispatch receiver parameter for FUN LOCAL_FUNCTION_FOR_LAMBDA" caused by run function in init block
• KT-65216 K2 JS: False positive JS_NAME_CLASH diagnostic on generic interface
• KT-64548 KJS / K2: "Cannot find delegated constructor call" caused by external classes constructors
• KT-64867 K2 JS: Name clash between constructors with same JsName but in different classes
• KT-64463 KJS / K2: "Name contains illegal chars that cannot appear in JavaScript identifier" caused by non-ASCII character
• KT-64451 K2: Implement MultiModuleOrderTestGenerated for K2
• KT-64450 K2: Implement SourceMapGenerationSmokeTestGenerated for K2
• KT-64366 KJS / K2: Exported declaration uses non-exportable return type: 'kotlin.?'
• KT-64426 K2: Implement JsIrLineNumberTestGenerated for K2
• KT-64422 K2: Implement IrJsSteppingTestGenerated for K2
• KT-64364 K2 / KJS: @JSExports generates clashing declarations for companion objects that extends its own class
• KT-64445 K2: Implement **VersionChangedTestGenerated for K2
• KT-64446 K2: Implement JsIrInvalidationPerFileWithPLTestGenerated for K2
• KT-64423 K2: Implement JsIrES6InvalidationPerFileTestGenerated for K2
• KT-63543 KJS / K2: Exported declaration uses non-exportable return type type: 'kotlin.Unit'
• KT-61596 K2 JS: support reporting PRE_RELEASE_CLASS
• KT-61117 Migrate remaining legacy IC tests to IR
• KT-61523 KJS: Call main function in per-file mode
• KT-63089 KJS / K2 : "IllegalArgumentException: source must not be null " for inner class and interface as type
• KT-56818 KJS: "TypeError: Class constructor * cannot be invoked without 'new'" when extending external class
• KT-62077 KJS: TypeError: str.charCodeAt is not a function
• KT-63436 K/JS: Eliminate names for synthetic classes in setMetadataFor()
• KT-63013 KJS: requireNotNull not working correctly in JS tests with Kotlin 1.9.20
• KT-61525 KJS: Test functions are not invoked in per-file mode
• KT-62425 K/JS: Implement K2 and K1 diagnostics for checking argument passing to js()
• KT-61524 KJS: Eager initialization doesn't work in per-file mode
• KT-61862 KJS: Can't create kotlin.js.Promise inheritor
• KT-61710 K/JS: Implement JS_NAME_CLASH check for top level declarations
• KT-61886 K/JS: Prepare K/JS tests for JS IR BE diagnostics
• KT-60829 Fix JS Incremental tests in 2.0 branch
• KT-60635 K/JS: Class internal methods may clash with child methods from other module that have the same name
• KT-60846 Fix IncrementalJsKlibCompilerWithScopeExpansionRunnerTestGenerated test in 2.0 branch

KMM Plugin

• KT-59270 Update wizards in KMM AS plugin after 1.9.20 release
• KT-60169 Generate gradle version catalog in KMM AS plugin
• KT-59269 Update wizards in KMM AS plugin after 1.9.0 release

Klibs

New Features

• KT-66367 KLib ABI dump: support wasm_target manifest attribute
• KT-65442 [klibs] header klibs: keep internal declarations and declarations inside inlines
• KT-62213 [klibs] header klibs should keep private interfaces
• KT-62259 KLIB ABI reader: add information about a backing field to AbiProperty
• KT-62341 [KLIB tool] Dump declared & imported signatures by IR (not metadata)
• KT-60807 [klib] Add an option to write out header klibs

Fixes

• KT-67401 KLib ABI dump: write plain targets in the manifest
• KT-66970 K2: "IrLinkageError: Function * can not be called" when calling @JvmStatic functions in Native test
• KT-64440 K2: Port KotlinKlibSerializerTest to K2
• KT-66921 K/JS backend doesn't report "/ by zero" and fails with const val property must have a const initializer
• KT-66611 Check, that no bad IR is produced, when we failed to compute constant default value in constant context
• KT-33411 Kotlin/Native crashes if several libraries have declarations with the same FQ name
• KT-44626 Umbrella issue: different kinds of klib IR linker error messages
• KT-64452 K2: Port FilePathsInKlibTest to K2
• KT-64395 API for ABI: Add a check for the file's existence to KLIB ABI Reader
• KT-61143 [klib tool] Dump IR with unbound symbols
• KT-65723 K2: Signature clash diagnostic fails for parametrized function with Unsupported pair of descriptors
• KT-65063 Clashing KLIB signatures from different modules result in an exception
• KT-64085 Different klib signatures for K1/K2 for overridden properties assigned in init block
• KT-63573 K2: Dependency problems with dependencies with same artifact id
• KT-64082 Different klib signatures in K1/K2 for the same locally used constant declaration
• KT-63931 [K/N] Relative path to klib option of cinterop tool doesn't work
• KT-60390 KLIBs: Wrong IrSymbol is used for deserialized expect property's backing field & accessors
• KT-61136 Drop ExpectActualTable + clean-up the relevant code
• KT-61767 [K/N] Header klibs should keep private underlying properties of value classes
• KT-61097 [PL] Don't create an executable if there were errors in PL

Language Design

New Features

• KT-64510 Proceed to next tower level if property setter is invisible in assignment
• KT-59553 K2: Simplify rules for upper bound violated checks for qualifier in LHS of class literal
• KT-11272 Resolve combined index-accessed get and set operators
• KT-65682 Deprecate header/impl keywords
• KT-65965 KMP: Parameter properties in constructor of external class
• KT-57274 Allow generic argument to have explicit Nothing upper bound
• KT-1982 Smart cast to a common supertype of subject types after || (OR operator)
• KT-65964 KMP: Private constructor in external classes
• KT-37316 Allow actual classifier to have more permissive visibility than visibility of expect classifier
• KT-58616 KMP: consider relaxing the classifier visibility matching rules
• KT-37115 Smart cast with boolean expressions and early return / throw statements
• KT-7186 Smart cast for captured variables inside changing closures of inline functions
• KT-62138 K1: false positive (?) NO_SET_METHOD for += resolved as a combination of Map.get and plus

Performance Improvements

• KT-38101 Exponential analysis of += calls

Fixes

• KT-64187 K2: False positive ABSTRACT_NOT_IMPLEMENTED caused by the fact that common code sees platform code of its dependencies
• KT-57290 Deprecate smart cast on base class property from invisible derived class if base class is from another module
• KT-54309 Deprecate use of a synthetic setter on a projected receiver
• KT-61718 Forbid unsound code with self upper bounds and captured types
• KT-54607 Can't use same function if having multiple instances of same subtype in same when-statement
• KT-27252 Smart cast in when on a sealed class depends on the order of "is" checks
• KT-57178 Change inferred type of prefix increment to return type of getter instead of return type of inc() operator
• KT-61749 Forbid unsound bound violation in generic inner class of generic outer class
• KT-64342 SAM conversion of parameter types of callable references leads to CCE
• KT-64299 Companion scope is ignored for resolution of annotations on companion object
• KT-66453 Consistently resolve operator/infix calls like function calls in presence of classifier candidate for receiver
• KT-62923 K2: Introduce PROJECTION_IN_IMMEDIATE_ARGUMENT_TO_SUPERTYPE for projections of outer super types of inner class
• KT-65724 Propagate data flow information from try block to catch and finally blocks
• KT-65750 Increment and plus operators that change return type must affect smart casts
• KT-58881 K2: Run checkers in common code against platform session
• KT-62646 Decide on the equality compatibility
• KT-65775 K2: Consider prohibiting actual typealias to superclass
• KT-65881 K2: Missing ITERATOR_MISSING in for loop on object
• KT-61340 K2: Allowed smart cast in common which should be prohibited in platform
• KT-51827 Inconsistent behavior with smartcast and protected members
• KT-58589 Deprecate missed MUST_BE_INITIALIZED when no primary constructor is presented or when class is local
• KT-26983 Gradle buildscript (kotlin-dsl): "Smart cast to 'Foo' is impossible" due to same variable names
• KT-62959 Value of captured type is not a subtype of the same captured type
• KT-64828 Update KEEP for SubclassOptInRequired
• KT-64739 Mark @SubclassOptInRequired as an experimental
• KT-26044 When expression is not considered to be exhaustive for empty nullable sealed and enum classes
• KT-57422 K2: Prohibit use-site 'get' targeted annotations on property getters
• KT-58921 K1/K2: difference in Enum.values resolve priority

Libraries

New Features

• KT-65532 Stabilize experimental API for 2.0
• KT-60657 Introduce Common String.toCharArray(destination) in stdlib
• KT-57150 Introduce common protected property AbstractMutableList.modCount
• KT-57151 Introduce common protected function AbstractMutableList.removeRange
• KT-66102 Constructor-like function for creating AutoCloseable instances
• KT-59441 Design reading and writing future versions of Kotlin metadata

Performance Improvements

• KT-64361 Optimization opportunity in Int.sign
• KT-65590 Make CharSequence.isBlank idiomatic and improve its performance
• KT-61488 Kotlin/Native stdlib: simplify ArrayList implementation
• KT-51058 Avoid byte array allocation in File.writeText when possible
• KT-58588 Optimizations for sequence functions distinct, flatten

Fixes

• KT-67397 Switch remaining org.jetbrains.kotlin libs to K2
• KT-61969 Migrate kotlin-test to the current Kotlin Multiplatform Plugin
• KT-60803 Experimental AutoCloseable 'use' method is not resolved in Java
• KT-63156 Remove all deprecated declarations in kotlinx-metadata-jvm
• KT-54879 Add callsInPlace contract for more functions in stdlib
• KT-55777 Unresolved kotlin.AutoCloseable in JVM
• KT-63219 Change root package and coordinates of kotlinx-metadata-jvm to kotlin.*
• KT-65518 Memory leak in buildMap and in Wasm/Js/Native (Linked)HashMap
• KT-65525 JS: Wrong return value of HashMap.keys.remove
• KT-63397 kotlin-test should declare runtime dependency on "org.junit.platform:junit-platform-launcher"
• KT-65242 Update transitive dependencies of JVM test frameworks in kotlin-test
• KT-63355 Detect concurrent modifications in ArrayDeque
• KT-64956 Implement optimized removeRange for ArrayDeque
• KT-58039 Wasm: Implement unsigned numbers using wasm builtin capabilities
• KT-63341 K2: JVM StringBuilder has no corresponding members for expected class members
• KT-63714 K2: kotlinx-benchmarks fails with "Unable to find method ''org.gradle.api.tasks.TaskProvider" with register("js")
• KT-63157 Make sure that all deprecation levels are raised to ERROR for declarations intended for removal from kotlinx-metadata
• KT-60870 kotlinx.metadata.InconsistentKotlinMetadataException: No VersionRequirement with the given id in the table In kotlinx-metadata-jvm
• KT-64230 Prohibit writing versions of metadata that are too high
• KT-62346 Sublists of ListBuilder does not correctly detect ConcurrentModification
• KT-57922 kotlinx-metadata-jvm does not take into account strict semantics flag
• KT-63447 K2: stdlib buildscript error: file included in two modules
• KT-62785 Drop unnecessary suppresses in stdlib after bootstrap update
• KT-62004 Drop legacy JS compilations of stdlib and kotlin-test
• KT-61614 WASM: Enum hashCode is not final

Multiplatform Wizard

• KT-66188 Update Compose for Desktop version to 1.6.0

Native

New Features

• KT-61642 [K/N] Serialize full IdSignatures to caches

Performance Improvements

• KT-63749 konan_lldb.py: is_string_or_array inefficient

Fixes

• KT-67218 Native: nested classes in kx.serialization ProtoBuf produce empty array for release binary
• KT-66390 Universal binary in included binaries produces universal archive as output
• KT-60817 K2/N: Fix remaining tests
• KT-65659 [K/N][K2] Typealiased kotlin.Throws isn't translated to NSError out param
• KT-64249 Native: Implicit cache directory search is O(n^2)
• KT-61695 [K/N] Empty list error in FakeOverridesActualizer with K2
• KT-57870 compileKotlinNative fails on windows if PATH contains invalid entry
• KT-64508 IndexOutOfBoundsException in Konan StaticInitializersOptimization
• KT-50547 [Commonizer] K/N echoServer sample fails with multiple "Unresolved reference" errors on Windows
• KT-62803 Konanc has print statement "Produced library API in..." that should be deleted or properly logged at INFO level
• KT-61248 [K/N] Extract native manglers out of backend.native module

Native. Build Infrastructure

• KT-63905 Extract ObjC Export Header generation from K/N backend
• KT-63220 [K/N] Unable to specify custom LLVM distribution

Native. C and ObjC Import

• KT-63049 NPE in BackendChecker.visitDelegatingConstructorCall compiling ObjC-interop class
• KT-49558 Kotlin/Native: "Backend Internal error: Exception during IR lowering" while compiling "val ldap = memScoped { alloc() }"
• KT-64105 [K2/N] cannot access Objective-C forward declared class used only in a dependent lib
• KT-59597 [K\N] Usage of instancetype in block return type crashes
• KT-63287 [K/N] Create test model for building/executing C-Interop tests
• KT-63048 K2 ObjC interop: Fields are not supported for Companion of subclass of ObjC type

Native. ObjC Export

• KT-66565 Exporting framework "umbrella" produces an unimportable framework
• KT-65863 Native: implement a flag to emit compiler errors on ObjCExport name collisions
• KT-63153 Native: implement a flag to emit compiler warnings on ObjCExport name collisions
• KT-62091 KMP for iOS framework with private api : __NSCFBoolean

Native. Runtime

• KT-65170 Kotlin/Native: deprecate -Xworker-exception-handling=legacy with error

Native. Runtime. Memory

• KT-62689 Native: generate signposts for GC performance debugging
• KT-63423 Kotlin/Native: huge dispose-on-main overhead
• KT-66371 Native: nullptr access during concurrent weak processing in CMS GC
• KT-64313 Kotlin Native: Seg Fault during Garbage Collection on 1.9.21 (observed on iOS)
• KT-61093 Kotlin/Native: enable concurrent weak processing by default

Native. Stdlib

• KT-60514 Add llvm filecheck tests for atomic intrinsics

Native. Testing

• KT-67501 Mute flaky driver tests on macOS agents
• KT-64755 Setup test for CMS GC
• KT-66014 [K/N][Tests] Some testsuites don't test two-stage compilation and lose -language-version flag
• KT-64393 Use Compiler Core test infrastructure for testing serialization diagnostics on Native
• KT-61871 Native CompilerOutput tests should be runned for K2
• KT-65117 Implement IrBackendFacades for Kotlin/Native backend
• KT-65979 Improve test coverage on K/JS and K/JVM with existing tests
• KT-64408 [K/N] No tests have been found for eagerInitializationGlobal1 test with per-file-caches
• KT-64256 IR_DUMP directive doesn't enforce FIR_IDENTICAL when it is possible
• KT-62157 Native: Migrate FileCheck tests to new native test infra

Reflection

• KT-65156 Calls to callBy that use default arguments fail with KotlineReflectionInternalError when the argument size is a multiple of 32 in a constructor that contains value class as a parameter
• KT-57972 Reflection: "KotlinReflectionInternalError" when using callBy with overridden function in inline class
• KT-60708 Reflection: Not supported ) (parentheses in backticks)
• KT-60984 K2: java.lang.ClassNotFoundException: kotlin.Array in runtime with Spring Boot test
• KT-60709 Reflection: Not recognized bound receiver in case of 'equals' always returning true

Specification

• KT-65651 Add Vladimir Reshetnikov to the specification "Acknowledgments" section
• KT-54499 Update kotlin specification for non-local break and continue

Tools. Build Tools API

• KT-61860 Add infrastructure for BTA tests
• KT-65048 "Can't get connection" (to daemon) when classpath has spaces

Tools. CLI

New Features

• KT-66703 Add JVM target bytecode version 22
• KT-64989 Mark the whole diagnostic position range instead of only start position

Fixes

• KT-65094 K2: Revise PerformanceManager reporting
• KT-67417 CLI: Remove option -Xrepeat
• KT-65451 K2: CLI: false positive warning "scripts are not yet supported with K2 in LightTree mode" on irrelevant files in source directory
• KT-65842 K2 / CLI: "kotlinc -version" creates META-INF/main.kotlin_module
• KT-66926 Add a flag to report warnings when errors are found
• KT-64384 Until the REPL in K2 is not supported, display an appropriate warning
• KT-64608 K2: Wrong end position of compiler diagnostics
• KT-64013 CLI REPL: "com.sun.jna.LastErrorException: [14] Bad address" on invoking kotlinc from CLI on ARM Mac
• KT-62644 Don't enable in progressive mode bug-fix features without target version
• KT-62350 CLI: no color output on Apple silicon Macs
• KT-61156 K2: do not try to run compilation if there were errors during calculation of Java module graph
• KT-48026 Add the compiler X-flag to enable self upper bound type inference

Tools. CLI. Native

• KT-64517 Drop deprecated KonanTargets

Tools. Commonizer

• KT-64376 Commonizer incorrectly retains UnsafeNumber annotation in target sets where it shouldn't

Tools. Compiler Plugin API

• KT-59555 Expose resource closing extension point in CompilerPluginRegistrar
• KT-64444 K2: IrGeneratedDeclarationsRegistrar.addMetadataVisibleAnnotationsToElement doesn't work for declarations in common module

Tools. Compiler Plugins

New Features

• KT-63617 Add kotlin-power-assert to Kotlin repository
• KT-33020 Support stripping debug information in the jvm-abi-gen plugin
• KT-64591 Data class' copy method is never stripped from ABI
• KT-65690 jvm-abi-gen: Remove internal declarations from ABI
• KT-64590 jvm-abi-gen: Effectively private classes are not being removed from ABI

Fixes

• KT-64707 K2: Parcelize ignores @TypeParceler set for typealias
• KT-67523 [K2] Actualizer cannot reconcile mismatched parameter names from java supertypes
• KT-67489 JsPlainObjects Plugin: Method not found when consuming
• KT-63607 Migrate kotlin-power-assert into Kotlin repository
• KT-67354 K2 Parcelize: support efficient Parcel serializer for parcelables in the same module
• KT-64454 K2: Implement ParcelizeIrBytecodeListingTestGenerated for K2
• KT-67353 K2 Parcelize: support parcelableCreator intrinsic
• KT-66526 K2: Special function kind setup does not work for value parameter whose type is function with a receiver
• KT-63507 K2 / All-open plugin: "'open' has no effect on a final class" warning
• KT-66208 PowerAssert: some built-in operators are not aligned correctly for some values
• KT-65810 PowerAssert: Infix transformation doesn't capture full context
• KT-65640 PowerAssert: Infix function not aligned correctly
• KT-61993 K2: Synthetic file classes are generated with start offset of 0, causing errors during compilation
• KT-64971 Exception is thrown when compiling kotlinx.coroutines to Native because of the new signature clash diagnostics
• KT-59074 K2: false-positive MUST_BE_INITIALIZED_OR_FINAL_OR_ABSTRACT if allOpen plugin is used and a val is defined with init {} block
• KT-64589 jvm-abi-gen: Order of class members affects ABI jar
• KT-65072 jvm-abi-gen: SourceDebugExtension annotation isn't stripped along with corresponding attribute
• KT-54025 [K2] [NONE_APPLICABLE] compiler error in case @ AllArgConstructor annotation is used together with a static field
• KT-54054 [Lombok] An extra unneeded constructor parameter is expected by compiler if java class annotated with @ AllArgsConstructor and has private final initialized field
• KT-61432 K2 Parcelize. RawValue is not recognized if parameter is annotated via typealias
• KT-64656 K2: realm-kotlin: compilation errors in IR plugin
• KT-53861 K2. Report SERIALIZER_TYPE_INCOMPATIBLE on specific type argument in kotlinx.serialization
• KT-63086 K2: "Parcelable should be a class"
• KT-60849 jvm-abi-gen: do not treat hasConstant property flag as a part of ABI for non-const properties
• KT-53926 K2. Don't check serializable properties from supertypes

Tools. Compiler plugins. Serialization

• KT-65757 K2: Missing @Deprecated annotation on synthesized declarations
• KT-63539 K2: Missing "Serializable class has duplicate serial name of property"
• KT-63570 K2 / Serialization: "Class * which is serializer for type * is applied here to type *. This may lead to errors or incorrect behavior."
• KT-64447 K2: Implement Serialization...IrBoxTestGenerated for K2
• KT-63591 K2: "KotlinReflectionInternalError: Could not compute caller for function" on generated internal constructor
• KT-64124 Different klib signatures in K1/K2 for a serializable class
• KT-63402 K2 / Serialization: "SyntheticAccessorLowering should not attempt to modify other files!" caused by sealed base with generic derived class in separate files
• KT-62215 Serialization / Native: "IllegalArgumentException: No container found for type parameter" caused by serializing generic classes with a field that uses generics
• KT-62522 K2 + kotlinx.serialization + Native: NPE when generic base class has inheritor in other module

Tools. Daemon

• KT-64283 Configure correct JVM arguments when starting the daemon

Tools. Fleet. ObjC Export

Fixes

• KT-66695 Move analysis-api-klib-reader package into 'o.j.k.native.analysis.api`
• KT-65384 ObjCExport: class super name special case
• KT-66380 ObjCExport: support interface implementation
• KT-65670 ObjCExport: Naming: Support additional module based prefix
• KT-64953 ObjCExport: Analysis-Api: enum
• KT-65348 ObjCExport: Char as function return type
• KT-65738 ObjCExport: Analysis-Api: Generate base declarations
• KT-65204 ObjCExport: Analysis Api: Support nested classes
• KT-65225 ObjCExport: implement KtCallableSymbol.isArray
• KT-65108 ObjCExport: Tests: Check if 'requirePlatformLibs' is necessary
• KT-65281 ObjCExport: AA: Run already passing Unit Tests on CI
• KT-65080 ObjCExport: Analysis-Api: error handling
• KT-64952 ObjCExport: Analysis-Api: object
• KT-64076 ObjCExport: Do not retain descriptors in stubs
• KT-64227 ObjCExport: Extract Header Generation to base module
• KT-64168 ObjCExport: Split header generator module into K1 and Analysis Api
• KT-64869 ObjCExport: Analysis-Api: Support 'MustBeDocumented' annotations
• KT-64839 ObjCExport: Enable tests on CI for aggregate
• KT-64888 ObjCExport: Analysis Api: Support exporting KDoc

Tools. Gradle

New Features

• KT-67253 Support per-target configuration in compose-compiler-gradle-plugin
• KT-67006 Create new compose compiler Gradle plugin
• KT-62921 Add API to allow getting the version of the kotlinc compiler
• KT-61975 Re-purpose kotlin.experimental.tryK2
• KT-64653 Add Kotlin DslMarker into Gradle plugin DSL
• KT-59627 FUS base plugin
• KT-62025 K/Wasm: Support binaryen for wasi

Performance Improvements

• KT-60664 Gradle 8.3: KGP eagerly creates compile task
• KT-64353 Improve reuse of Build Tools Api's classloader
• KT-66912 Parallel compilation slowdown due to synchronization
• KT-63005 Avoid registering KMP related compatibility/disambiguration rules for pure JVM/Android projects

Fixes

• KT-58768 Support configuration cache and project isolation for FUS statistics
• KT-65143 Use the new ConfigurationContainer dependencyScope method to create dependency declaration configurations
• KT-62640 Compatibility with Gradle 8.5 release
• KT-62639 Compatibility with Gradle 8.4 release
• KT-59024 Compatibility with Gradle 8.3 release
• KT-58064 Compatibility with Gradle 8.2 release
• KT-64355 Add plugin variant for gradle 8.5
• KT-67746 Indicate for users they need to apply the new Kotlin Compose Gradle plugin
• KT-67387 Enable intrinsic remember by default in compose compiler gradle plugin
• KT-64115 KGP + JVM/JS/WASM: The same library can be passed twice to the compiler
• KT-67762 Rename Kotlin Compose Compiler plugin on Gradle portal
• KT-64504 Remove ownModuleName from AbstractKotlinCompile
• KT-67778 Clarify documentation for compose metricsDestination property
• KT-67139 Build reports can be overridden
• KT-67138 Json report is empty for incremental compilation
• KT-67685 KotlinBaseApiPlugin regression with Gradle's Configuration Cache in 2.0.0-RC1
• KT-64567 [FUS] Add boolean flag into kotlin.gradle.performance collector
• KT-67515 Remove 'experimental' from compose strong skipping mode
• KT-67441 Gradle remote cache misses in the compose plugin
• KT-67602 Compose gradle plugin: a deprecated plugin option 'experimentalStrongSkipping' is added by default that causes a warning
• KT-67200 Compose gradle plugin: 'suppressKotlinVersionCompatibilityCheck' option is duplicated if added as a kotlin option for the KotlinCompile task and kapt is used
• KT-67216 Compose compiler plugin: false-positive versions incompatibility is reported
• KT-64379 Remove kotlin.useK2 gradle property
• KT-62939 Bump minimal supported AGP version to 7.1
• KT-63491 Restore access to top-level DSL to configure compiler options in MPP
• KT-65935 Track project isolation Gradle feature
• KT-65934 Track if Gradle configuration cache is enabled in the user builds
• KT-66459 PowerAssert: Improve design of excludedSourceSets extension property
• KT-64203 Throw exception when old build report properties are used
• KT-62758 Gradle: make precise task outputs backup enabled by default
• KT-65568 Deprecate the ability to configure compiler options in KotlinCompilation
• KT-63419 Deprecate 'kotlinOptions' DSL
• KT-64848 Log K/Native compiler arguments with log level specified for compiler arguments
• KT-58223 Kotlin Gradle plugin shouldn't store data in project cache directory
• KT-61913 Validate LanguageSettings KDoc
• KT-61171 CompilerPluginsIncrementalIT.afterChangeInPluginBuildDoesIncrementalProcessing doesn't provide a compiler plugin for K2 leading to the test failure
• KT-62131 Could not isolate value org.jetbrains.kotlin.gradle.plugin.statistics.BuildFlowService$Parameters_Decorated@63fddc4b of type BuildFlowService.Parameters
• KT-66961 Early access to gradle.rootProject leads to an exception
• KT-61918 Removal of an associated compilation from a build script doesn't lead to full recompilation
• KT-63619 Add Kotlin power-assert compiler plugin to feature usage statistics gathering
• KT-62108 Wrong scope of compiler options is used while configuring options for all targets and all compilations
• KT-55322 Kotlin daemon: Cannot perform operation, requested state: Alive > actual: LastSession
• KT-66429 Move WASM stability warning to KGP Tooling Diagnostics and report it once per build
• KT-63165 Gradle: checkKotlinGradlePluginConfigurationErrors uses deprecated Gradle behavior
• KT-66374 Diagnostic for deprecated properties: false-positive warning is reported for kapt.use.k2property
• KT-64117 K2: "'when' expression must be exhaustive" state does not fail compilation
• KT-58443 Change deprecation level to WARNING for KotlinOptions
• KT-65768 Don't pass -Xfragment-sources for non-mpp compilations
• KT-62398 KMP: Compose breaks resolution of stdlib declarations in common source set
• KT-64046 Provide K/N version to KGP when -Pkotlin.native.enabled=true
• KT-66154 Cannot access 'org.slf4j.spi.LoggingEventAware' in the Space K2 QG
• KT-65952 PowerAssert: Update Gradle extension to be more idiomatic
• KT-65951 PowerAssert: Add Gradle integration tests to compiler plugin
• KT-66373 [Wasm, KGP] Npm is not configured for JS usagе for wasmWasi project
• KT-66314 Build reports in JSON: property 'kotlin.build.report.json.directory' without value causes NPE
• KT-64380 Add project diagnostics for deprecated properties
• KT-65986 GradleDeprecatedOption.removeAfter does not actually remove arguments from the compilerOptions/kotlinOptions DSLs
• KT-65989 Compile against Gradle API 8.6
• KT-65819 Build Gradle Plugins against Gradle 8.5 API
• KT-65701 Limit Gradle daemon max memory in integration tests
• KT-65708 Flaky tests because of ivy repos in Integration Tests
• KT-56904 Enable warnings-as-error for Kotlin Gradle plugins compilation
• KT-65606 Out of memory in Anki Android in the K2 QG
• KT-65347 K/N has not been dowloaded before :commonizeNativeDistribution
• KT-65213 Collect logic for FUS metrics calculation in one place
• KT-61698 Compiler options configured inside metadata {} target set up all targets in a project
• KT-64824 Move validateParameters from CInteropProcess to diagnostics
• KT-60879 Deprecation warning on trying to configure Configuration multiple times
• KT-64251 KGP: Cannot re-use tooling model cache with Project Isolation due to "~/.gradle/kotlin-profile" changing
• KT-64655 K2: PeopleInSpace: K2 build fails during Gradle config
• KT-63697 The warning is still presented in terminal after suppressing it with -Xexpect-actual-classes flag
• KT-62527 Gradle: get rid of the Project.buildDir usages
• KT-60733 Allow specify log level for compiler arguments used to compile sources
• KT-63369 Fix: "The org.gradle.api.plugins.BasePluginConvention type has been deprecated."
• KT-63368 Fix "The automatic loading of test framework implementation dependencies has been deprecated. "
• KT-63601 Fetching Gradle compiler DSL objects using raw strings is inconvenient in the Groovy DSL
• KT-62955 Missing static accessors for Wasm targets in Kotlin Gradle plugin DSL:
• KT-62962 Remove COMPILE_INCREMENTAL_WITH_ARTIFACT_TRANSFORM system property
• KT-62264 Send build type report metric to FUS
• KT-62650 Gradle: Return the usage of kotlin-compiler-embeddable back
• KT-61295 KotlinTestReport captures Project.buildDir too early
• KT-62987 Add tests for statistics plugin in Aggregate build
• KT-62964 Build Gradle plugin against Gradle 8.4 API
• KT-62617 Update report configuration project FUS metrics
• KT-61896 Gradle: compilation via build tools API doesn't perform Gradle side output backups
• KT-62016 ClassNotFoundException on org.jetbrains.kotlin.backend.common.serialization.metadata.DynamicTypeDeserializer in the K2 QG
• KT-56574 Implement a prototype of Kotlin JVM compilation pipeline via the build tools API
• KT-61206 Build system classes may leak into the Build Tools API classloader
• KT-61737 GradleStyleMessageRenderer.render misses a space between the file and the message when location is (line:column = 0:0)

Tools. Gradle. Cocoapods

• KT-57650 Gradle Cocoapods: use pod install --repo-update instead of pod install
• KT-63331 CocoaPods plugin noPodspec() causes "property * specifies file * which doesn't exist."

Tools. Gradle. JS

Fixes

• KT-55620 KJS / Gradle: plugin doesn't support repositoriesMode
• KT-65870 KJS / Gradle: kotlinUpgradePackageLock fails making Yarn unusable
• KT-66917 JS/Wasm: Upgrade NPM dependencies
• KT-63040 K/JS: Rework outputs of webpack and distribution task
• KT-61992 KJS / Gradle: KotlinJsTest using KotlinMocha should not show output, and should not run a dry-run every time.
• KT-65295 Gradle: K/N and K/JS tests may produce unrequested TeamCity service messages
• KT-63435 KJS: Get rid of deprecated outputFileProperty of Kotlin2JsCompile
• KT-61294 NodeJsRootExtension captures Project.buildDir too early
• KT-59282 K/JS: KotlinJsIrLinkConfig is not compatible with Configuration Cache in Gradle 8.1.1
• KT-62780 K/JS: Deprecate node-specific properties in NodeJsRootExtension
• KT-63544 KGP: JS - KotlinJsIrLink is not compatible with Gradle CC starting 8.4
• KT-63312 KJS: Apply IR flags for JS compilations unconditionally
• KT-62633 wasmWasi/JsNodeTest tasks are always not up-to-date
• KT-63225 java.lang.ClassNotFoundException: org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrCompilation in the K2 QG
• KT-41382 NI / KJS / Gradle: TYPE_MISMATCH caused by compilations.getting delegate
• KT-53077 KJS / Gradle: Remove redundant gradle js log on kotlin build
• KT-56300 KJS / Gradle: plugin should not add repositories unconditionally
• KT-60694 KJS: Remove K/JS legacy support from Gradle plugin
• KT-56465 MPP: Import with npm dependency fails with "UninitializedPropertyAccessException: lateinit property fileHasher has not been initialized" if there is no selected JavaScript environment for JS target
• KT-41578 Kotlin/JS: contiuous mode: changes in static resources do not reload browser page

Tools. Gradle. Kapt

• KT-62518 kapt processing is skipped when all annotation processors are indirect dependencies
• KT-27404 Kapt does not call annotation processors on custom (e.g., androidTest) source sets if all dependencies are inherited from the main kapt configuration
• KT-22261 Annotation Processor - in gradle, kapt configuration is missing extendsFrom

Tools. Gradle. Multiplatform

New Features

• KT-66047 KMP: Isolate dependencies graph between main and test source sets
• KT-61559 Include stdlib and platform dependencies to KotlinNativeCompilation.compileDependencyFiles API
• KT-65196 Add high-level DSL to configure compiler options in the multiplatform project

Performance Improvements

• KT-57141 K2: KotlinCompile task input named 'multiplatformStructure.fragments.$0.sources' is tracked in a pure JVM kotlin project together with changes of sources

Fixes

• KT-65315 KMP Composite compileIosMainKotlinMetadata fails with "Could not find "
• KT-67042 K2: Unresolved reference 'convertRadiusToSigma'
• KT-66983 MPP Configuration Cache IT fails with Gradle 8.7 on windows
• KT-60489 Android-java only consumers (no KGP applied) choose Java-variant instead of Android-variant when depending on MPP library
• KT-67806 KMP import fails if android target has flavors
• KT-67636 Gradle configuration error when use withJava()
• KT-63536 KMP: MetadataDependencyTransformationTask is not Thread Safe
• KT-67127 KMP: IDE Dependency Resolver for CInterops reports errors on linux and windows machines
• KT-66514 Don't get output file from Cinterop task for IDE Import if host os doesn't support it
• KT-65426 K2: Debug compilation fails because code from main source set included in two K2 fragments
• KT-65480 MissingNativeStdlibChecker checks existence of konanDistribution.stdlib during configuration phase
• KT-61945 Report redundant dependsOn-edges
• KT-65187 Remove deprecated platform plugins ids
• KT-49919 Introduce the org.gradle.jvm.environment attribute on JVM and Android published variants (both for MPP and non-MPP libraries)
• KT-66419 Remove useless API: Kotlin compilation level compiler options DSL
• KT-64913 Report warning if user has multiple source set roots for a certain compilation
• KT-66563 Stop including resources to metadata klib
• KT-61078 K2: Compilation fails in FirSerializer trying to serialize nested class
• KT-66372 KMP: JVM dependency can be downgraded by metadata dependency
• KT-66431 KMP: External Target Compilation friendArtifactResolver throws ClassCastException
• KT-64995 KonanPropertiesBuildService is not compatible with Project Isolation
• KT-61430 K2/KMP: metadata compilation fails with Unresolved reference for property in actual class
• KT-63753 K2: File "does not belong to any module" when it is generated by registerJavaGeneratingTask in AGP
• KT-62508 Merge Android Source Sets into one K2 Fragment
• KT-61943 Mark the checkKotlinGradlePluginConfigurationErrors as UP-TO-DATE when possible
• KT-63206 Deprecate eager CInteropProcess.outputFile in favor to lazy outputFileProvider
• KT-65248 Native compile task fail with ClassNotFoundException: org.jetbrains.kotlin.cli.utilities.MainKt
• KT-56440 TCS: Gradle Sync: Add API to populate extras only during sync
• KT-64629 Gradle configuration fails: 'fun jvmToolchain(jdkVersion: Int): Unit' can't be called in this context by implicit receiver
• KT-63226 KGP Multiplatform Ide Dependency Resolution: Use gradle variants instead/in addition of ArtifactResolutionQuery
• KT-60734 Handle the migration from ios shortcut and source set with getting
• KT-63197 After using Kotlin 1.9.20 on Windows 11, the gradle sync failed
• KT-61540 K2: KMP/K2: Metadata compilations: Discriminate expect over actual by sorting compile path using refines edges
• KT-60860 K2: Fix KotlinNativeCompileArgumentsTest in 2.0 branch
• KT-61463 KMP: Remove unused 'kpm' code
• KT-40309 A call of a declaration with actual typealiases is incorrectly successfully compiled in commonTest using the type from actual part

Tools. Gradle. Native

New Features

• KT-49268 Only download Kotlin/Native Compiler when there are valid targets

Performance Improvements

• KT-58303 Kotlin multiplatform Gradle plugin downloads Kotlin/Native compiler during configuration

Fixes

• KT-67522 K/N toolchain: unclear compilation error if path specified as a value for the kotlin.native.home doesn't provide the kotlin native compiler downloaded
• KT-67521 K/N warning checking existence of the standard library isn't displayed when the native toolchain enabled and the kotlin native home dir doesn't contain stdlib
• KT-65624 K/N warning: "The Kotlin/Native distribution used in this build does not provide the standard library." is displayed during configuration phase
• KT-66694 Disable Kotlin Native Toolchain when custom konan home passed
• KT-66309 K/N compiler can't be downloaded if project import is stopped while 'commonizeNativeDistribution' task is being executed and rerun again
• KT-65641 Invalid replacements for deprecated properties 'konanHome' and 'konanDataDir' are suggested as quick fixes
• KT-65823 Add downloading k/n dependencies to KotlinNativeProvider
• KT-62907 Turn on downloading Kotlin Native from maven by default
• KT-62795 CInteropProcess task resolves cinterop def file eagerly, breaking Gradle task dependencies
• KT-66982 Gradle plugin corrupts Native compiler dependencies
• KT-66750 Cannot query the value of task ':commonizeNativeDistribution' property 'kotlinNativeBundleBuildService' because it has no value available
• KT-64903 Add maven repo with dev versions into IT
• KT-66422 Configuration cache breaks during Kotlin Native dependencies downloading
• KT-65985 Race condition during simultaneous execution of several native tasks
• KT-51379 Build fails when using RepositoriesMode.FAIL_ON_PROJECT_REPOS with kotlin multiplatform projects
• KT-52567 Use Gradle dependency management for downloading Kotlin/Native compiler when compiling with Gradle
• KT-65222 Native compile task fails after clean reimport
• KT-52483 Sign native prebuilt tars
• KT-62800 CInteropProcess should not require .def file to exist
• KT-51255 Kotlin/Native should not download compiler artifacts when not necessary
• KT-62745 iOS application build is failing if script sandboxing option is enabled in Xcode
• KT-61657 KonanTarget should implement equals or custom serialization
• KT-62232 embedAndSignAppleFrameworkForXcode task is broken with 1.9.20-Beta2
• KT-56455 Gradle: remove enableEndorsedLibs from codebase
• KT-51553 Migrate all Kotlin Gradle plugin/Native tests to new test DSL and add CI configuration to run them

Tools. Incremental Compile

New Features

• KT-61865 Add support for incremental compilation within the in-process execution strategy in the build tools api

Fixes

• KT-61137 Incremental scripting compilation fails with 2.0
• KT-65943 Incorrect scopeFqName recorded in LookupTracker
• KT-56423 IC: "Cannot access class 'xxx.Foo'. Check your module classpath for missing or conflicting dependencies" in tests and KSP
• KT-62101 IC: Execution failed for ClasspathEntrySnapshotTransform: when using tools.jar as dependency
• KT-62686 K2: Common module sees platform declarations in case of MPP project incremental compilation
• KT-63837 Implement baseline fix for common sources getting access to platform declarations
• KT-64513 Simplify adding configuration properties to incremental compilation
• KT-21534 IC doesn't recompile file with potential SAM-adapter usage
• KT-63839 Measure impact of rebuilding common sources, using nightly IC benchmarks
• KT-64228 K2: After switching to LV20 branch incremental tests are not running on PSI anymore
• KT-46743 Incremental compilation doesn't process usages of Java property in Kotlin code if getter is removed
• KT-60522 Incremental compilation doesn't process usages of Java property in Kotlin code if return type of getter changes
• KT-56963 Add MPP/Jvm incremental compilation tests for both K1 and K2 modes
• KT-63876 Move useful utilities from KmpIncrementalITBase.kt to KGPBaseTest and/or common utils
• KT-63010 Build reports may contain incorrect measurements for "Total size of the cache directory"
• KT-59178 With language version = 2.0 incremental compilation of JVM, JS fails on matching expect and actual declarations
• KT-60831 Fix IncrementalMultiplatformJvmCompilerRunnerTestGenerated in 2.0 branch

Tools. JPS

• KT-65043 JPS dumb mode should respect maps needed for the compiler
• KT-55393 JPS: Java synthetic properties incremental compilation is broken
• KT-63549 Add compiler performance metrics to JPS build reports
• KT-63484 JPS Kotlin Incremental Compilation Overcaching
• KT-62486 K2 Intellij build: Execution timeout after changes in IC in the K2 QG
• KT-60737 Investigate/fix JPS-related tests in 2.0 migration branch

Tools. Kapt

Fixes

• KT-66541 K2 KAPT: KotlinIllegalArgumentExceptionWithAttachments: Expected expression 'FirPropertyAccessExpressionImpl' to be resolved
• KT-64303 K2 KAPT: Kapt doesn't dispose resources allocated by standalone analysis API
• KT-66773 KAPT: Generated stubs cannot access annotations from other module
• KT-65399 K2 QG: Kapt3 with K2 produces incorrect code
• KT-65684 KAPT: (Re)enable fallback to K1 KAPT and make it default
• KT-44706 KAPT: @JvmRecord causes "Record is an API that is part of a preview feature"
• KT-59488 K2: build sphinx-kotlin
• KT-64391 Some K2 Kapt integration tests are being executed with K1
• KT-65404 KAPT should print a warning if stub generation is triggered for an interface with method bodies but without -Xjvm-default=all or -Xjvm-default=all-compatibility
• KT-65453 Kapt4: error "annotation @ParameterName is missing a default value for the element 'name'" for a composable lambda fun without parameters
• KT-61080 Kapt: investigate suspicious check for KMutableMap.Entry in KaptTreeMaker
• KT-65006 [kapt] org.jetbrains.kotlin.utils.exceptions.KotlinIllegalArgumentExceptionWithAttachments: Error while resolving org.jetbrains.kotlin.fir.declarations.impl.FirRegularClassImpl in the K2 QG
• KT-64479 Kapt4 + Compose. Error: scoping construct cannot be annotated with type-use annotation: @androidx.compose.runtime.Composable
• KT-64719 K2 KAPT Stub genertaion doesn't fail on files with syntax errors
• KT-64680 Kapt: remove the flag to enable old JVM backend
• KT-64639 KAPT+JVM_IR: erased error types in JvmStatic and JvmOverloads
• KT-64389 K2 KAPT generates invalid code for multiple generic constraints
• KT-61776 K2: KAPT tasks fail with parallel gradle
• KT-64021 Kapt3 + Kapt4. NullPointerException: processingEnv must not be null
• KT-64301 K2 KAPT: Kapt doesn't report invalid enum value names to log
• KT-64297 K2 KAPT: Deprecated members are not marked with @java.lang.Deprecated
• KT-60821 [KAPT4] Make sure that KAPT produces correct JCTree; if that's not possible, investigate using JavaPoet as an alternative
• KT-62059 Kapt4IT.kt18799 test fails - cannot find symbol Factory
• KT-62097 K2: [KAPT4] Keep import statements for unresolved annotation classes
• KT-61628 K2: testAndroidDaggerIC doesn't work with Kapt4
• KT-61916 K2 KAPT. Kapt doesn't generate fully qualified names for annotations used as arguments to other annotations
• KT-61729 K2: KAPT 4: Compiler crash during compilation of Sphinx for Android
• KT-61333 K2 Kapt: support REPORT_OUTPUT_FILES compiler mode
• KT-61761 Kapt4ToolIntegrationTestGenerated should not use Kapt3ComponentRegistrar
• KT-59702 KAPT4: Build sphinx-kotlin using KAPT4

Tools. Maven

• KT-63322 Add tests for KTIJ-21742
• KT-54868 Stop publishing kotlin-archetype-js
• KT-60859 K2: Fix maven IncrementalCompilationIT tests in 2.0 branch

Tools. Parcelize

• KT-57685 Support ImmutableCollections in Parcelize plugin

Tools. REPL

• KT-18355 REPL doesn't quit on the first line after pressing Ctrl+D or typing :quit

Tools. Scripts

• KT-67727 Kotlin Scripting with language version 2.0 fails during IR lowering on empty scripts
• KT-66395 K2: Scripting test testHelloSerialization fails on K2
• KT-63352 Scripting dependencies resolver logs "file not found" even if the artefact is retrieved
• KT-62400 K2: Missing annotation resolving for scripts
• KT-65865 K2: Compile scripts in a separate session
• KT-65967 Scripts in common source roots should be forbidden for now
• KT-58367 Remove script-util from the repo

Tools. Wasm

New Features

• KT-63417 KMP hierarchy DSL. Split withWasm() into withWasmJs() and withWasmWasi()
• KT-64553 K/Wasm: enable binaryen by default in production builds

Fixes

• KT-65864 K/Wasm: update Node.js to 22.x
• KT-67785 Kotlin/Wasm: Node.JS 22 does not need experimental-wasm-gc flag anymore
• KT-66228 K/Wasm 2.0.0-Beta4 distribution doesn't contain all files
• KT-66159 K/Wasm: applyBinaryen somehow affects skiko.mjs
• KT-67086 K/Wasm: wasi with binaries.library fails on import and build
• KT-65889 wasmJsBrowserDistribution doesn't copy wasm binaries to dist folder
• KT-66733 wasmWasiTest is not compatible with Gradle Configuration Cache
• KT-64851 Wasm. Support Gradle configuration cache
• KT-64601 Indicate that wasmJsBrowserDevelopmentRun has finished bundling
• KT-65686 K/Wasm: Binaryen and d8 have to be downloaded via the same mechanism as Node.js and Yarn
• KT-58291 Wasm: --tests argument is ignored when running wasmBrowserTest