v2.2.20: Kotlin 2.2.20

Changelog

Analysis API

• KT-78187 Synthetic properties not to be shown as callables
• KT-72525 K2. red code and KIWA on new-lines in guarded when conditions (with parentheses)
• KT-74246 KaVisibilityChecker.isVisible is inefficient with multiple calls on the same use-site

Analysis API. Code Compilation

• KT-78382 K2 IR lowering error when interface extends interface
• KT-73201 K2 IDE: Error while evaluating expressions with local classes
• KT-78164 Evaluator: '@JvmName' annotations are not recognized in other modules
• KT-76457 K2 IDE / KMP Debugger: KISEWA "Cannot compile a common source without a JVM counterpart" on evaluating inline fun from common module inside jvm
• KT-73084 K2 evaluator cannot resolve local variables standing at the closing brace

Analysis API. FIR

Performance Improvements

• KT-76490 Do not load ast during the contracts phase if no contracts present
• KT-78132 Do not check FirElementBuilder#tryGetFirWithoutBodyResolve optimization for already resolved declarations

Fixes

• KT-72227 SOE from recursive value class
• KT-68977 K2 IDE: Reference to companion object through typealias in a function call does not work
• KT-72357 Implement partial body resolution
• KT-76932 Support context parameters on dangling modifier list
• KT-72407 FirImplementationByDelegationWithDifferentGenericSignatureChecker: FirLazyExpression should be calculated before accessing
• KT-77602 K2 / Analysis API: KAEWA "No fir element was found for KtParameter" on incorrect context()-call
• KT-77629 K2: NPE: "org.jetbrains.kotlin.fir.java.declarations.FirJavaTypeParameter.performFirstRoundOfBoundsResolution"
• KT-76855 Analysis API: KaType.asPsiType returns null for a local inner class in dependent analysis tests
• KT-72718 ImplicitReceiverValue.createSnapshot creates invalid FIR if receiver is smart-casted
• KT-76811 Analysis API: resolveToFirSymbol finds a FirPropertySymbol for a KtScript in dependent analysis
• KT-73586 [Analysis API] Add lazyResolveToPhase(STATUS) before accessing modifiers of members
• KT-71135 AA: exception from sealed inheritors checker when analyzeCopy
• KT-75534 K2 AA: "Containing declaration should present for nested declaration class KtNamedFunction" with dangling annotation on top-level anonymous function
• KT-75687 K2: local variable doesn't get to the do-while scope
• KT-56543 LL FIR: rework lazy transformers so transformers modify only declarations they suppose to

Analysis API. Infrastructure

• KT-76809 Analysis API: Dependent analysis tests frequently work with the original element instead of the copied element

Analysis API. Light Classes

• KT-78835 Find usages of a light constructor from a class with an empty body finds usages of class as well
• KT-78878 K2. Method shown as unavailable in Java when @JvmExposeBoxed is applied (redundantly) at both class and method level in Kotlin
• KT-78065 Support "Expose boxed inline value classes" in Light Classes
• KT-78076 DLC: KotlinDeclarationInCompiledFileSearcher missed accessors if types are boxed
• KT-77569 SLC: annotation missing from generated no-args constructor
• KT-75182 K2 AA. False positive red code "Unresolved reference" to a Kotlin method in Java when Kotlin uses a value class with @JvmOverloads
• KT-77564 Constructor with JvmOverloads and value class shouldn't mark regular constructors private
• KT-77505 K2: find usages on java accessor methods do not detect kotlin property accessor usages
• KT-76789 Annotation resolve shouldn't search through non-class members
• KT-76907 Wrong equality between repeatable annotation and container

Analysis API. Providers and Caches

• KT-77578 Analysis API: Performance degradation of KaBaseResolutionScope.contains after introduction of library restriction scopes
• KT-78640 Analysis API: Remove "friend builtins provider" from FirDeclarationForCompiledElementSearcher
• KT-74907 Analysis API: Apply platform-based library module content restrictions consistently
• KT-77605 AA: Leaking KaDanglingFileModule through IdeKotlinPackageProvider
• KT-62474 Analysis API: Improve mergeability and performance of custom search scopes
• KT-77022 Get rid of ExpectBuiltinPostProcessor workaround
• KT-77248 Delegation of JavaModuleResolver is restricted to CliJavaModuleResolver
• KT-76850 LLFirLibrarySession cannot be cast to LLFirResolvableModuleSession
• KT-76952 Analysis API: when exhaustiveness analysis fails for sealed classes in dangling files
• KT-72390 Kotlin project full of red code

Analysis API. Standalone

• KT-78638 Analysis API Standalone: Stdlib builtins are not indexed in STUBS deserialized declaration origin mode

Analysis API. Stubs and Decompilation

• KT-77496 Support HAS_MUST_USE_RETURN_VALUE metadata flags in FirStubBasedMemberDeserializer
• KT-77778 Function receivers doesn't have annotations
• KT-77777 Receiver annotations shouldn't be present on types
• KT-77538 Support default property accessors with annotations
• KT-77763 Decompiled stubs miss inline modifier for property accessors
• KT-77309 Decompiled property from annotation constructor with default value should have a constant initializer
• KT-77168 Prefer DataInputOutputUtil for serialization/deserialization
• KT-77117 Flaky WRONG_ANNOTATION_TARGET diagnostic
• KT-76791 Function signature types are deserialized inconsistently
• KT-76947 Support functional types with context parameters

Analysis API. Surface

New Features

• KT-73473 Provide KaExpressionInformationProvider.isUsedAsResultOfLambda
• KT-77278 Implement psi-based KaFirKotlinPropertyKtPropertyBasedSymbol#hasBackingField
• KT-70770 KaLocalVariableSymbol: support isLateInit

Performance Improvements

• KT-78526 Get rid of redundant checkValidity from withPsiValidityAssertion

Fixes

• KT-77674 Analysis API: Redundant smart cast to the original type
• KT-76577 Guard KaFirStopWorldCacheCleaner from deadlocks via threads waiting
• KT-78820 K2: ISE "FIR element class FirErrorExpressionImpl is not supported in constant evaluation" through RedundantValueArgumentInspection
• KT-75057 Analysis API: Reference to object through typealias in invoke operator call leads to original type
• KT-79042 Do not restore KaTypePointer if target kind has changed
• KT-72421 AA: "KtReference.resolveToSymbols" returns empty list when ASSIGN_OPERATOR_AMBGUITY error is present
• KT-63464 AA: KtPsiTypeProvider#asPsiType doesn't substitute kotlin.Unit
• KT-75913 K2: SymbolLightLazyAnnotation evaluates arguments and replaces them with constants
• KT-78628 K2. Setting Receiver=true in Change Signature produces parameter of regular function type receiver instead of extension function type
• KT-78278 ISE: FIR element "class org.jetbrains.kotlin.fir.expressions.impl.FirErrorResolvedQualifierImpl" is not supported in constant evaluation at org.jetbrains.uast.kotlin.internal.FirKotlinUastConstantEvaluator.evaluate
• KT-73184 Analysis API: KaFunctionCall.argumentMapping is unexpectedly deparenthesised
• KT-73327 Cover all psi inputs with scope validity assertions
• KT-78613 PSI: add binary compatibility checks
• KT-74013 Analysis API: Cover the API surface with @SubclassOptInRequired annotations
• KT-76614 Move the parser and lexer to a separate module
• KT-78552 KaFunctionValueParameter is not marked as KaLifetimeOwner
• KT-71152 Add back SubclassOptInRequired to classes in KaModule.kt
• KT-71876 Support storing parameter names in KaFunctionType
• KT-77738 AA: inconsistent KaType.allSupertypes regarding multiple iterations
• KT-75358 K2 AA, KaFirVisibilityChecker: private member of anonymous object is not visible inside it
• KT-73723 K2 AA, KaFirVisibilityChecker: protected member of superclass is not visible from anonymous object
• KT-78057 [Analysis API, K2] Context parameters are not resolved in KDoc
• KT-73758 K2 Mode: "KaEvaluator.evaluate" does not work for simple arithmetic expressions
• KT-72301 K2 AA. PSI should present for declaration built by Kotlin code on property access syntax of generic Java getter through Kotlin subclass
• KT-77730 K2: Unable to get a light PSI for a nested annotation used with fully-qualified name
• KT-73216 K2: unresolvable references in type parameters
• KT-71794 Analysis API: Types with errors have unresolved qualifiers in lambda parameters position
• KT-65846 Support parameter names in functional type rendering
• KT-76738 K2 AA: rendering constructor of sealed class inserts protected modifier
• KT-77515 KaTypeProvider#receiverType should be more tolerant to an error code
• KT-77333 K2 AA: KaFirTypeProvider.getType: InvalidFirElementTypeException: For TYPE_REFERENCE with text I, unexpected element of type: FirSuperReceiverExpressionImpl found
• KT-76044 K2 AA: isFun is true for restored symbol of Java interface with several methods
• KT-77264 KaTypeProvider#type should be more tolerant to an error code
• KT-77282 KaPropertySymbol: support isDelegatedProperty for libraries
• KT-77254 K2 AA: expectedType doesn't provide anything for parameter default value
• KT-74777 KaVariableSymbol.hasBackingField returns incorrect result for libraries
• KT-77280 Rename KaPropertyAccessorSymbol#isCustom to isNotDefault
• KT-77210 Analysis API: scopeContext shows implicit receiver with a class instance in the class constructor
• KT-77196 Clarify differences between KaPropertyAccessorSymbol#{isDefault, hasBody}
• KT-76580 K2: No expected type for the second+ vararg argument
• KT-76750 K2. internal exception 'Unable to provide inlay hint' on typo in nested lambdas
• KT-73290 Analysis API: Improve the architecture of content scopes and resolution scopes
• KT-73055 Get rid of the deprecated Analysis API API
• KT-70199 K2: ConcurrentModificationException at FirCallCompleter$LambdaAnalyzerImpl.analyzeAndGetLambdaReturnArguments

Backend. Wasm

New Features

• KT-65721 K/Wasm: stop unconditionally exporting any main function from the root package

Performance Improvements

• KT-70097 Optimize shared primitive variables in Native and Wasm

Fixes

• KT-80106 devServer in Kotlin/Wasm overwrites defaults, causing missing static paths
• KT-80018 K/Wasm: exceptions don't work properly in JavaScriptCore (vm inside Safari, WebKit)
• KT-66072 K/Wasm: improve how exceptions work in JS interop
• KT-77897 WasmJs: ClassCastException when using star-projection with nullable transformation in generic extension function
• KT-71533 K/Wasm + K2: no error on KClass::qualifiedName usages
• KT-73931 WASM: "RuntimeError: illegal cast" with nullable generic
• KT-65403 [WASM] RuntimeError is thrown instead of ClassCastException
• KT-79317 [Wasm] Do not throw CCE for ExcludedFromCodegen declarations
• KT-66085 K/WASM: Runtime error is uncaught with catch (e: Throwable)
• KT-78036 K/Wasm: generate a message with "expected" and "actual" types in case of CCE
• KT-78384 K/Wasm: Incorrect debug info of local declarations in inline function from another file
• KT-72220 Wasm: Unclear exception in case of missed dependency
• KT-71691 No trace on Wasm/JS if an error occurred in initializing global variables in a file with the main function
• KT-67554 [Wasm] Consider to have reference equals or/and equals for function references
• KT-71521 K/Wasm: incorrect results on equality checks for capturing property references
• KT-71522 K/Wasm: incorrect results on equality checks for function references
• KT-69570 K/Wasm: JsExport with default parameter value compiles to invalid Wasm
• KT-71517 K/Wasm: KClass::qualifiedName for local classes and objects returns non-null value
• KT-68309 WASM: Anonymous class simpleName returns "" instead of null
• KT-77272 K/Wasm: Remove kotlin.wasm.internal.ClosureBox* classes from the standard library
• KT-66106 Wasm: lambda was not invoked in test lambda2.kt
• KT-77855 [Wasm] Improve virtual function calls speed for lambdas
• KT-77501 Wasm: unsigned vararg compiles to invalid Wasm
• KT-76775 [Wasm] Inconsistent FP mod operation
• KT-77464 Wasm: KType.toString() has simple names even with -Xwasm-kclass-fqn
• KT-77465 Wasm: KTypeParamter printed without variance information

Compiler

New Features

• KT-71768 Enable -Xjvm-default=all-compatibility by default to generate JVM default interface methods
• KT-78374 Make indy lambda function name generation more consistent
• KT-45683 Allow generics in contract type assertions
• KT-27090 Support contracts in getter and setter for top-level extension properties
• KT-76766 Warning is missing for wrong subclass checking
• KT-71244 Incorporate existing @CheckReturnValue annotation(s) into Kotlin's unused return value checker
• KT-73256 Implement all meta-target for annotations
• KT-78792 Report warning for redundant return in expression body
• KT-32313 Support contracts for operator functions
• KT-70722 Implement better Kotlin warnings for value classes and JEP 390 (Warnings for Value-Based Classes)
• KT-65688 Generate when-expressions over final classes via invokedynamic typeSwitch + tableswitch on JDK 21+
• KT-54344 Trigger the unused expression warning for interpolated strings, even when the expression may have side effects
• KT-74807 Implement 'full' unused return value checker mode
• KT-77653 K/N: an optimization pass to remove redundant type checks
• KT-64477 Enhance KotlinLightParser to make it able to parse scripts
• KT-74809 Support unnamed local variables
• KT-72941 ANNOTATIONS_ON_BLOCK_LEVEL_EXPRESSION_ON_THE_SAME_LINE missing in K2
• KT-75061 Support context-sensitive resolution in type position

Performance Improvements

• KT-77993 Optimize old PSI/LightTree Kotlin parser
• KT-78672 Consider having FirCallableSymbol.callableId null for local properties / parameters
• KT-77839 K2: consider not creating CallableId for value parameters / variables / fields
• KT-74981 Kotlin/Native: large binary size for iOS target in 2.1.0(LLVM16)
• KT-77838 K2: consider replacing LinkedHashMap with HashMap inside scopes and scope session
• KT-76698 Android Studio compose preview holds read lock 700ms for KaCompilerFacility API
• KT-68677 Kotlin compilation issue when using EnumMap and Pair

Fixes

• KT-79979 K2: ClassCastException when overriding extension property with delegation
• KT-67146 UPPER_BOUND_VIOLATED missing on implicit type arguments
• KT-76477 Kotlin/Native: fix compiler performance reporting in sources->klib and klibs->binary
• KT-79866 kotlinc 2.2.0 silently emits 'NonExistentClass' instead of reporting an error
• KT-78666 "Platform declaration clash" caused by indy lambda name generation which generates conflicting names
• KT-80285 IJ monorepo: broken compilation after 2.2.20-RC update
• KT-79442 "Multiple annotations of type kotlin.coroutines.jvm.internal.DebugMetadata": 2.2.0-Beta1 generates broken code with JVM default suspend methods in interfaces
• KT-78589 "Class does not have member field" caused by delegation from a Java to Kotlin class
• KT-79816 Java Interfaces implemented by delegation have non-null return checks
• KT-78097 False positive NO_ELSE_IN_WHEN on sealed interface with negative is check
• KT-77182 A function in a file annotated with @file:MustUseReturnValue doesn't produce a warning when it is used from compiled code
• KT-79085 Adding -Xreturn-value-checker=full to kotlinc causes "error: conflicting overloads"
• KT-75268 K2: Implement the new compilation scheme for MPP (compiler part)
• KT-78843 FIR tree: comments within String concatenation aren't visited in 2.2.0
• KT-77401 [FIR] ParameterNameTypeAttribute.name doesn't support @ParameterName with compile-time constant property argument
• KT-73611 Remove -Xextended-compiler-checks in favor of a deprecation cycle
• KT-79276 Dexing fails with "Cannot read field X because is null" with 2.2.0
• KT-79781 Missing MISSING_DEPENDENCY_CLASS when using type alias with inaccessible RHS
• KT-78621 false-positive type mismatch error on value of nullable type as value of platform type
• KT-79547 "UnsupportedOperationException: Not supported" with inlining and value classes
• KT-52706 Bad signature for generic value classes with substituted type parameter
• KT-79519 Nested type alias is unreachable from another module
• KT-76839 False-negative MISSING_DEPENDENCY_CLASS on parameter of data class constructor
• KT-78352 False-positive IDENTITY_SENSITIVE_OPERATIONS_WITH_VALUE_TYPE when comparing with equality operator (==)
• KT-78815 Symbol not found: __ZNSt3__117bad_function_callD1Ev error on iOS 15.5 simulator in Xcode 16.3 after update to 2.2.0-Beta2
• KT-25341 NOT_YET_SUPPORTED_IN_INLINE reported over anonymous object border
• KT-77099 'all' annotation target is not a soft keyword
• KT-76478 FIR: Implement IDE-only checker for types exposed in inline function
• KT-79355 Failed to fix the problem of desugared inc with new reverse implies returns contract
• KT-79277 Implies returns contract doesn't affect the return type of the function if it is in the argument position
• KT-79271 Implies returns contract doesn't impact exhaustiveness
• KT-79218 SMARTCAST_IMPOSSIBLE for top‐level extension‐property getter despite returnsNotNull contract
• KT-79220 returnsNotNull contract ignored on extension function with nullable receiver
• KT-79354 IllegalStateException: Debug metadata version mismatch. Expected: 1, got 2 with compiler 2.2.20-Beta1 and stdlib 2.2.0
• KT-78479 IR lowering failed / Unexpected null argument for composable call
• KT-77986 K2: False negative: "Local classes are not yet supported in inline functions"
• KT-79076 'IllegalStateException: Cannot serialize error type: ERROR CLASS: Uninferred type' with Exposed column using recursive generic type
• KT-78726 Split runPsiToIr phase into runPsiToIr and runIrLinker
• KT-77672 K/N: come up with a fallback strategy for the casts optimization pass
• KT-76365 K2: Missing ABSTRACT_SUPER_CALL
• KT-76585 K2: RETURN_IN_FUNCTION_WITH_EXPRESSION_BODY is not reported inside initializers of local variables
• KT-79099 K2: Do not inherit inline modifier
• KT-76902 Omit type-use annotations from diagnostics
• KT-64499 Report error on overloading by order of context parameters
• KT-58988 K2: Deprecate exposing package-private parameter of internal method
• KT-77199 OPT_IN_USAGE_ERROR is still absent when calling the enum primary constructor
• KT-72800 K2: java.util.NoSuchElementException when introduce variable
• KT-79056 Add experimental language version 2.5
• KT-17460 Diagnostics and intention on suspend function that is overriden with non-suspend one.
• KT-78351 Plugins: VIRTUAL_MEMBER_HIDDEN caused by FirSupertypeGenerationExtension
• KT-78527 No LESS_VISIBLE_TYPE_ACCESS_IN_INLINE_WARNING is reported when a private companion object is accessed via the class name
• KT-79045 FirExpectActualMatcherTransformer should not visit bodies
• KT-74570 K2: Linenumber for annotation on property is present in LVT
• KT-74569 K2: Linenumber of annotation is present in constructor's LVT
• KT-64731 K2: Annotation on inline function or inside inline function is hit by debugger
• KT-77756 Add experimental language version 2.4
• KT-78837 linkReleaseFrameworkIosArm64: Compilation failed: An interface expected but was Any
• KT-78945 CONTRACT_NOT_ALLOWED is not reported for local operator functions
• KT-78944 ANNOTATION_IN_CONTRACT_ERROR is not reported for operators and property accessors with contracts
• KT-78943 ERROR_IN_CONTRACT_DESCRIPTION is not reported for operators and property accessors with contracts
• KT-78932 Contracts are allowed for open and overridden property accessors
• KT-77203 FIR: Consider adding destructured type to all COMPONENT_FUNCTION_* diagnostics
• KT-76635 Implement Data-Flow Based Exhaustiveness Support
• KT-78805 K2: False positive METHOD_OF_ANY_IMPLEMENTED_IN_INTERFACE
• KT-78651 No need to report LESS_VISIBLE_TYPE_ACCESS_IN_INLINE_WARNING in noinline default value lambda
• KT-78849 K2: [Wasm, Fir2IR] Invalid smartcast on overloaded function call
• KT-78793 Make feature AllowEagerSupertypeAccessibilityChecks experimental
• KT-78736 Missing [NOT_YET_SUPPORTED_IN_INLINE] diagnostics because of incorrect context update
• KT-78324 K2: False negative [INCONSISTENT_TYPE_PARAMETER_VALUES]
• KT-69975 KDoc: cannot reference elements with names in backticks
• KT-78229 KDoc: unable to reference a method with spaces in the name
• KT-78047 Render unnamed context parameters as _ instead of
• KT-74621 Debugger: AssertionError on evaluating two suspending calls
• KT-78784 Improve deprecation warnings about KTLC-284
• KT-76826 New inference error [NewConstraintError at Incorporate TypeVariable] caused by recursive generics and nullable expected type
• KT-77685 "IllegalArgumentException: Sequence contains more than one matching element"
• KT-78028 "FirNamedFunctionSymbol" leaks to the error message about missing infix modifier
• KT-77245 Add expression name to RETURN_VALUE_NOT_USED diagnostic
• KT-78071 False-positive NO_ELSE_IN_WHEN after variable reassignment
• KT-78068 False-positive NO_ELSE_IN_WHEN after excluding enum value with inequality check
• KT-71134 Consider to get rid of CapturedTypeMarker.withNotNullProjection()
• KT-77131 getValue/setValue can be declared with more than two/three parameters
• KT-78452 Drop redundant frontend structures after fir2ir conversion
• KT-78458 Don't populate PredicateBasedProvider if no lookup predicates are registered
• KT-78440 Lambda with an implicitly runtime-retained annotation is generated via invokedynamic with -Xindy-allow-annotated-lambdas=false
• KT-77709 Missing diagnostics of accessing less visible objects in inline function
• KT-77577 False positive exposed type warnings
• KT-77095 FIR: Report warnings on exposure of references to invisible references in inline functions
• KT-76981 Move exposed type checker to regular checkers
• KT-78252 ClassCastException when Array<Void> used for compile-time vararg of Nothing
• KT-77713 Context Parameters cause compiler generate r8 incompatible bytecode
• KT-71854 K2 IDE. False positive red code because of external annotation on a generic parameter
• KT-67335 K2: Infers Int instead of Long for an ILT
• KT-76629 K2 Mode: False positive RedundantVisibilityModifier inspection on private constructors in sealed classes
• KT-77728 Drop controversial experimental checkers
• KT-78429 K2: Property callable reference incorrectly smart-casted to intersection of property type and KProperty
• KT-78509 Renamed for override copy functions are cached in scope instead of session
• KT-17417 Loops in delegation: no compilation error on non-abstract class with abstract method that never implemented
• KT-75033 Split JvmBackendPipelinePhase to be able to provide a custom implementation of writeOutputs
• KT-75831 K2: An extra "[VALUE_PARAMETER_WITHOUT_EXPLICIT_TYPE] An explicit type is required on a value parameter." for a missing parameter
• KT-78370 All the [something]Assign operators on dynamic return Unit as a type
• KT-73950 K2 IDE / Kotlin Debugger: ISE "Fake override should have at least one overridden descriptor" on evaluation of local calss in presence of bystander
• KT-78280 Implement the sourceless KtDiagnostics
• KT-76543 Migrate psi2ir sources to new IR parameter API
• KT-77716 Kotlin/Native and -Xseparate-kmp-compilation: "Compilation failed: Several functions kotlin/native/immutableBlobOf found"
• KT-76400 Context-sensitive resolution doesn’t work in if-else condition passed as a function argument
• KT-76606 Enable 'Indy: Allow lambdas with annotations' by default
• KT-76739 Dubious argument type mismatch "actual type is 'String', but 'String' was expected" caused by wrong number of type arguments
• KT-78121 Report warning on function type with multiple implicit values that's annotated with DSL marker
• KT-76872 Anonymous context parameters are not visible in debugger
• KT-74088 Kotlin Debugger: CCE on evaluating private suspend function
• KT-77301 False positive Context Parameter resolution when using DslMarker
• KT-78230 Add more test cases to the holdsIn contracts
• KT-78111 K2: Approximation of captured star projection in function type produces Function1<Nothing?, Unit> in IR
• KT-77273 K/N: Remove the kotlin.native.internal.Ref class from the standard library
• KT-73995 JVM bytecode: Bad name for value class field
• KT-73013 Kotlin Debugger: ISE "No mapping for symbol: VALUE_PARAMETER" on evaluating callable reference to local function with closure in it
• KT-77665 K2: unresolved annotatation on local context parameter type
• KT-77485 Add constraints logging to inference
• KT-76504 Find and deprecate actively used parts of K1 API
• KT-75338 K2 Mode: False positive "Redundant assignment" diagnostic on variable captured by local function
• KT-77648 K2: False negative DSL_SCOPE_VIOLATION when using named argument for lambda with annotated function type
• KT-77355 Report warning on overloading by a superset of another overload's context parameters
• KT-77354 Report warning on overloading by a subtype of another overload's context parameter
• KT-78084 Unify deprecation warning messages
• KT-76776 @MustUseReturnValue doesn't affect nested scopes
• KT-77545 @NoInfer on receiver type leads to false positive type mismatch when generic type is specified explicitly and closest implicit receiver is of incorrect type
• KT-76772 @NoInfer on a context parameter's type leads to a false-positive context argument ambiguity error regardless of the closest implicit values' types if there are multiple of them at the call site
• KT-76771 @NoInfer on context parameter type leads to a false-positive type mismatch when generic type is specified explicitly and closest implicit value at the call site is of a mismatching type
• KT-77156 INITIALIZATION_BEFORE_DECLARATION is not reported in anonymous object
• KT-78060 UNRESOLVED_REFERENCE in fp-space
• KT-67555 Debug metadata: map the Continuation label to the next executable location in file
• KT-77723 Refine the message for ArrayEqualityCanBeReplacedWithEquals checker
• KT-75178 Inline functions in conjunction with @JvmStatic may result in bytecode errors
• KT-77390 Prototype lazy loading of stdlib symbols in Native
• KT-77921 False positive EXTENSION_SHADOWED_BY_MEMBER when member has context parameters
• KT-77895 false-negative error on package directives with context parameter lists (even with context parameters disabled)
• KT-76767 AMBIGUOUS_CONTEXT_ARGUMENT should report the name of the context parameter in addition to the type
• KT-77444 K2: False negative "Unchecked cast" with casting from MutableList to MutableList
• KT-63348 K2: FIR2IR should properly pass expected types
• KT-77627 K2: consider getting rid of NEW_INFERENCE_ERROR
• KT-75833 K2: Extra [ANNOTATION_ARGUMENT_MUST_BE_CONST] when passing regex-like strings as annotation arguments
• KT-77547 Native: add a check that the logic looking for stdlib-related bitcode is not used when compiling sources to a klib
• KT-77206 Remove PARAMETER_NAME_CHANGED_ON_OVERRIDE suppression in KMP lexers
• KT-77679 Update syntax-api dependency in KMP Kotlin parser
• KT-77705 K2: Consuming data class compiled with kotlin 1.0.5 breaks the K2 compiler
• KT-76583 CCE: suspend lambda attempts to unbox value class parameter twice after lambda suspended
• KT-76663 KJS: KotlinNothingValueException caused by expression return since 2.1.20
• KT-75457 Native: cache machinery uses stdlib cache with default runtime options even if custom runtime options are supplied when partial linkage is disabled
• KT-77563 False-positive smart cast with captured local in init block causes NPE
• KT-77696 ISE "couldn't find inline method" on kotlin/Result compiled by old Kotlin version
• KT-76931 K2: Annotation on do-while expression captures variables from inside the loop
• KT-77183 Metadata: remove multi-field value class representation
• KT-77678 Apply found optimization to Kotlin KMP parser
• KT-60127 K2: Support scripts with LightTree-based raw FIR building
• KT-76615 K2: "IllegalArgumentException: Inline class types should have the same representation: Lkotlin/UByte; != B" for mixed Java/Kotlin code
• KT-77220 Annotation with EXPRESSION is not allowed on lambdas in Kotlin 2.2.0
• KT-77656 K/N: fix the super type for local delegated properties
• KT-75907 Inference/PCLA: consider storing semi-fixed variables in inference session
• KT-77144 Implement KMP Kotlin parser
• KT-77352 Implement KMP Expression parser
• KT-76984 SYNCHRONIZED_BLOCK_ON_JAVA_VALUE_BASED_CLASS isn't reported for primitive wrapper classes instantiated within the scope
• KT-67471 K2: "Unresolved reference" on incorrect term of FQ name
• KT-77269 [K/N] external calls checker crashes when used with caches
• KT-77205 Kotlin Debugger / Context Parameters: CCE "class FirPropertySymbol cannot be cast to class FirFunctionSymbol" on evaluating class property
• KT-74133 FIR: use EmptyDeprecationsPerUseSite consistently in symbols
• KT-77100 java.lang.Void type is not ignorable
• KT-77491 K2: No SUPERTYPE_IS_EXTENSION_FUNCTION_TYPE when using typealias
• KT-77490 Report error on contextual function type in supertype
• KT-77431 Functional type with a context is allowed as an upper-bound
• KT-77432 Context isn't passed properly when functional type with a context is used as a type argument
• KT-77417 There is no TYPE_VARIANCE_CONFLICT_ERROR when 'out' type is used in context
• KT-62631 Improve expect-actual "checking" incompatibilities reporting
• KT-77481 Support ExpectRefinement feature in HMPP compilation scheme
• KT-77268 Make sure that -Xreturn-value-checker also enables -XX:UnnamedLocalVariables
• KT-65719 K1/K2: Nullness defaults from subclass unsoundly applied to method in superclass
• KT-53836 In type-parameter declarations, recognize JSpecify annotations only on bounds
• KT-73658 JSpecify @NonNull annotation on type-parameter bound prevents type-variable usages from being platform types
• KT-77000 Leave ForbidInferOfInvisibleTypeAsReifiedOrVararg as a warning
• KT-74084 K2: False negative [NO_ELSE_IN_WHEN]
• KT-77451 FirLazyResolveContractViolationException for test with overridden delegate
• KT-77397 Report UNSUPPORTED_CONTEXTUAL_DECLARATION_CALL when calling declaration with contextual function type in signature
• KT-77137 K2: Controversial behavior allows resolving annotation arguments on a companion inside it
• KT-77257 Report compilation error when in generated JVM bytecode there is a need for CHECKCAST of the conditional expression to the inaccessible interface
• KT-77256 Report compilation error when in generated JVM bytecode there is a need for CHECKCAST of the functional call result to the inaccessible interface
• KT-76356 K2 evaluation fails on evaluating inline methods if there is an inline with AutoCloseable
• KT-73786 Evaluator: cannot evaluate inline methods with reified parameter
• KT-77204 Native: XCode strip command causes flaky tests
• KT-77351 Implement KMP KDoc parser
• KT-76914 compile-time failure on a type argument placeholder in a callable reference
• KT-76597 False negative opt-in required on delegated constructor call
• KT-76667 Mark the class implementation of interface function with ACC_BRIDGE in the class file
• KT-77181 K2: a nested typealias annotation observes member declarations of the outer class
• KT-77180 K2: Wrong scope for annotation arguments in the constructor header
• KT-77287 Try enforcing source != null when origin == Source
• KT-76135 K2: drop pre-1.8 language features from compiler code
• KT-77231 Reflection: CCE on resuming coroutine after callSuspend if result is a generic inline class substituted with primitive
• KT-77031 Investigate the actual need of deduplicating provider in HMPP compilation scheme
• KT-77050 Implement KMP KDoc lexer
• KT-77048 Implement KMP Kotlin lexer
• KT-77044 Consolidate, refine and update jFlex dependency
• KT-77252 It is impossible to declare an unnamed variable in a script
• KT-58137 K2: ISE "Usage of default value argument for this annotation is not yet possible" when instantiating Kotlin annotation with default parameter from another module
• KT-77140 Protect ConstraintSystemCompletionMode.UNTIL_FIRST_LAMBDA with opt-in
• KT-76898 K2: ClassCastException when data class shadows supertype's componentX method with wrong type
• KT-75695 Bogus "Assigned value is never read" warning for prefix ++ operator
• KT-76805 Wrong NPE occurs when assigning synthetic properties with platform types in Kotlin 2.1.20
• KT-77078 K2: anonymous object is wrongly allowed to implement interfaces by unsafe Delegation
• KT-72722 Treat 'copy' calls of a data class as explicit constructor usages
• KT-77149 IllegalArgumentException: source must not be null
• KT-76806 K2: AIOOBE in FirEqualityCompatibilityChecker
• KT-72391 KJS: (a * b).toDouble_ygsx0s_k$ is not a function
• KT-76950 K2: "IllegalArgumentException: Inline class types should have the same representation: Lkotlin/UByte; != B" with nullable UByte
• KT-76043 Native: NotImplementedError: Generation of stubs for class org.jetbrains.kotlin.ir.symbols.impl.IrFieldSymbolImpl is not supported yet
• KT-77126 Transitive dependency mismatch between Kotlin Gradle Plugin and Scripting dependencies
• KT-72831 ANNOTATION_USED_AS_ANNOTATION_ARGUMENT missing in some cases in K2
• KT-73707 Remove dependency on ":compiler:backend.jvm" from Native
• KT-75499 CheckerContext#{containingDeclaration, containingFile} in checkers should return symbols
• KT-76548 False positive TYPE_MISMATCH when resolving an expression with the expected type from the upper bound
• KT-76142 K2: @RequiresOptIn warning does not display the custom message when using concatenated strings.
• KT-68699 Kotlin Debugger: UPAE "lateinit property parent has not been initialized" on trying evaluate enumValues(), enumEntries() from inlined function with reified parameter
• KT-63267 K2: incorrect line numbers after smart cast of an extension receiver
• KT-71309 Kotlin Debugger: UnsupportedOperationException on calling method with reified type parameter
• KT-74912 K2: Investigate irrelevant ARGUMENT_TYPE_MISMATCH on top-level lambdas
• KT-74657 K2: Linenumber for annotation on local variable is present in LVT
• KT-76749 NONE_APPLICABLE message is unreadable for stdlib context function
• KT-74932 Investigate false-negative ARGUMENT_TYPE_MISMATCH on a nested anonymous function
• KT-74545 Redundant TYPE_MISMATCH in variable initializer with call
• KT-76774 K2: Simplify ResolutionMode.WithExpectedType contracts
• KT-76689 Unnamed local variable with type and without initializer is allowed
• KT-76746 ClassCastException: class org.jetbrains.kotlin.fir.types.impl.FirUserTypeRefImpl cannot be cast to class
• KT-76754 K2: Compiler doesn't check annotations on array literals (as annotation arguments)
• KT-76674 The function isn't called from unnamed local variable initializer
• KT-75553 MISSING_DEPENDENCY_SUPERCLASS and MISSING_DEPENDENCY_SUPERCLASS_WARNING is reported at the same time on the same element
• KT-76345 Enhance variable fixation
• KT-73348 AssertionError from isCompiledToJvmDefault on super call of suspend function with composable function parameter
• KT-72305 K2: Report error when using synthetic properties in case of mapped collections
• KT-73527 Prohibit (via a deprecation warning) accessing nested class through generic outer class
• KT-59886 K2: Disappeared ERROR_IN_CONTRACT_DESCRIPTION
• [KT-61227](https://youtr