CHANGELOG

1.5.21

Compiler

KT-47320 “StringConcatException: Mismatched number of concat arguments” String concatenation fails when template contains special character
KT-47445 “definitely not null type parameters is only available since language version 1.6” error in cast expression
KT-47446 Improve warning message INTEGER_OPERATOR_RESOLVE_WILL_CHANGE
KT-47447 False positive INTEGER_OPERATOR_RESOLVE_WILL_CHANGE warning: “expression will be resolved to Int in future releases”
KT-47449 JVM / IR: ClassCastException IrStarProjectionImpl cannot be cast to IrTypeProjection
KT-47459 “IndexOutOfBoundsException: Index 0 out of bounds for length 0” caused by MarkertManager dependency
KT-47480 StackOverflowError: Recursion on erasion of raw type with interdependent type parameters

Tools. Compiler Plugins

KT-47161 Serializable class can‘t be inherited from serializable class in other module with: e: org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Couldn’t transform method node: write$Self
KT-47455 Kotlin lombok plugin NullPointerException
KT-47513 Lombok compiler plugin failed with ‘Recursion detected in a lazy value under LockBasedStorageManager@1c21db60 (TopDownAnalyzer for JVM)’

Tools. Gradle

KT-47444 Gradle Plugin: Publishing project with “maven-publish” fails when dependency versions are omitted (NPE in MppDependencyRewritingUtilsKt.associateDependenciesWithActualModuleDependencies)

Tools. kapt

KT-47416 Kapt Gradle DSL ignores javaCompilerOptions in 1.5.20

1.5.20

Compiler

New Features

KT-43262 No error for Java generic class @NotNull type parameter used in Kotlin with nullable type argument
KT-44373 FIR: support error / warning suppression
KT-45189 Support nullability annotations at module level
KT-45284 Emit warnings based on jspecify annotations
KT-45525 Allow to omit JvmInline annotation for expect value classes
KT-46545 Emit annotations on function type parameters into bytecode for -jvm-target 1.8 and above

Performance Improvements

KT-36646 Don't box primitive values in equality comparison with objects in JVM_IR

Fixes

KT-8325 Unresolved annotation should be an error
KT-19455 Type annotation unresolved on a type parameter of a supertype in anonymous object expression
KT-24643 Prohibit using a type parameter declared for an extension property inside delegate
KT-25876 Annotations on return types and supertypes are not analyzed
KT-28449 Annotation target is not analyzed in several cases for type annotations
KT-36770 Prohibit unsafe calls with expected @NotNull T and given Kotlin generic parameter with nullable bound
KT-36880 K/N IR: Reference to expect property in actual declaration is not remapped
KT-38325 IllegalStateException: No parameter with index 0-0 when iterating Scala 2.12.11 List
KT-38342 FIR: Consider renaming diagnostic from AMBIGUITY to OVERLOAD_RESOLUTION_AMBIGUITY
KT-38476 [FIR] Forgotten type approximation
KT-38540 Kotlin/Native Set.contains fails with specific enum setup
KT-40425 IrGenerationExtension. Support simple reporting to compiler output (for development/debug)
KT-41620 ClassCastException: Class cannot be cast to java.lang.Void
KT-41679 NI: TYPE_MISMATCH wrong type inference of collection with type Any and integer literal
KT-41818 NI: False positive IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION leads to NothingValueException on delegated properties
KT-42239 IR: Report compilation error instead of throwing an exception (effectively crash compiler) when some declaration wasn't found while deserialization
KT-42631 ArrayIndexOutOfBoundsException was thrown during IR lowering
KT-43258 NI: False positive “Suspend function ‘invoke’ should be called only from a coroutine or another suspend function” when calling suspend operator fun on object property from last expression of a crossinlined suspend lambda
KT-44036 Enum initialization order
KT-44511 FIR DFA: smartcast after if (nullable ?: boolean)
KT-44554 RAW FIR: NPE in RawFirBuilder
KT-44682 raw FIR: incorrect source for qualified access
KT-44695 *_TYPE_MISMATCH_ON_OVERRIDE checkers do not work for anonymous objects
KT-44699 FIR: incorrect lambda return type (led to a false alarm: PROPERTY_TYPE_MISMATCH_ON_OVERRIDE)
KT-44802 FIR bootstrap: trying to access package private class
KT-44813 FIR bootstrap: various errors in collection-like classes
KT-44814 FIR bootstrap: incorrect cast in when branch
KT-44942 [FIR] ClassCastException in boostrap tests
KT-44995 FIR: false positive for ANNOTATION_ARGUMENT_MUST_BE_CONST
KT-45010 FIR: lambda arguments of inapplicable call is not resolved
KT-45048 FIR bootstrap: VerifyError on KtUltraLightClass
KT-45052 FIR bootstrap: inapplicable candidate in GenerateSpecTests.kt
KT-45121 FIR IDE: redundant vararg parameter type transformation
KT-45136 Native: dividing Int.MIN_VALUE by -1 crashes or hangs
KT-45236 JVM / IR: “IllegalStateException: Symbol with IrTypeParameterSymbolImpl is unbound” caused by contracts and sealed class
KT-45308 Psi2ir: “AssertionError: TypeAliasDescriptor expected” caused by using typealias from one module as a type in another module without a transitive dependency
KT-45316 [FIR] Ambiguity between two implicit invokes with receiver
KT-45344 FIR: Wrong inferred type for nullable type parameter
KT-45385 FIR: false positive MUST_BE_INITIALIZED_OR_BE_ABSTRACT after rethrow
KT-45475 [FIR] No smartcast after throw in if inside try block
KT-45508 False negative ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED on a fake override with an abstract super class member
KT-45578 REPL: Unresolved imports are cached for the subsequent compilations
KT-45685 JVM IR: capturing a variable into crossinline suspend lambda makes the function inside inline function no longer unbox Result
KT-45584 [FIR] Fix overriding property and java function in java class
KT-45697 JVM IR: ISE “Function has no body” on getter of private field in a class present both in sources and dependencies
KT-45842 Compiler doesn't allow a shared class to inherit a platform-specific sealed class
KT-45848 False negative [SEALED_INHERITOR_IN_DIFFERENT_MODULE] error in compiler for a platform-specific inheritor of a shared sealed class
KT-45931 There is no warning based on nullability java annotation
KT-45998 JVM IR: AE when an accessor to a protected companion object member is being generated in child class
KT-46048 Enum entries init order in companion object
KT-46074 FIR: private-in-file fun interface is considered invisible in this file
KT-46173 No error reporting on annotations on target type of as expression in return
KT-46235 JVM IR: Stack overflow error on large expressions
KT-46270 [FIR] Support @PublishedAPI in inline checker
KT-46539 Generate annotations on type parameters bounds in bytecode
KT-46578 JVM IR: IllegalAccessError accessing property delegated to java super class protected field reference
KT-46597 JVM IR: AssertionError: SyntheticAccessorLowering should not attempt to modify other files - crossinline accessor
KT-46601 JVM / IR: IllegalStateException: “Can't find method 'invokeinvoke`” when default lambda takes inline class parameters
KT-46670 StackOverflowError on inheritance from raw type where class has protobuf-like recursive generics
KT-46715 JVM / IR: “AssertionError: Unbound symbols not allowed IrConstructorSymbolImpl” with enum classes with the same name in test and src folders
KT-46759 JVM IR: CCE in LateinitUsageLowering on @JvmStatic lateinit property in object
KT-46777 [Native] [IR] Support suspend function as super type
KT-46802 JVM / IR: “UnsupportedOperationException: Unknown structure of ADAPTER_FOR_CALLABLE_REFERENCE” caused by function reference on @JvmStatic function with unused default parameters
KT-46813 JVM / IR: “ClassCastException: Integer cannot be cast to class Result” with Flow and fold method
KT-46822 JVM IR: StackOverflowError on compiling a large data class
KT-46837 Backend Internal error: Exception during IR lowering: assert at IrOverridingUtilKt.buildFakeOverrideMember
KT-46921 JVM / IR: “IndexOutOfBoundsException: Cannot pop operand off an empty stack” caused by crossinline parameter and label return
KT-46984 Type parameter bounds aren't used to report corresponding mismatch warnings
KT-46985 There aren't warnings by java nullability annotations
KT-46986 There aren't warnings by java nullability annotations
KT-46989 There aren't warnings by java nullability annotations
KT-46990 There aren‘t warnings by java nullability annotations on method’s violated type arguments
KT-47019 K/N: IrProperty.overriddenSymbols can‘t be used in common IR backend modules yet because it doesn’t fully work in Native

Docs & Examples

KT-33783 Document when a range created with rangeTo is empty

IDE

KT-44638 clone() call is unresolved in JVM module of a multiplatform project
KT-45629 [ULC] KtUltraLightFieldForSourceDeclaration.nameIdentifier returns null
KT-44825 Can't open Kotlin compiler settings in newly created project
KT-45908 Reproduciable ‘org.jetbrains.kotlin.idea.caches.resolve.KotlinIdeaResolutionException: Kotlin resolution encountered a problem while analyzing KtNameReferenceExpression’

IDE. FIR

KT-45175 FIR IDE: Exception with local property in init block
KT-45199 FIR IDE: Error while collecting diagnostic on stale element after replacing element in quickfix
KT-45312 FIR IDE: FIR plugin throws exception on synthetic function

IDE. Gradle Integration

KT-34401 KotlinGradleModelBuilder builds models for non-kotlin modules and always trigger full task configuration.
KT-45277 Wrong jvm target in gradle module in IDEA
KT-46488 Import of a multiplatform project with MPP module depending on Kotlin/JVM one fails

IDE. Inspections and Intentions

KT-45075 Inspection: Redundant creation of Json format
KT-45347 Sealed interfaces: quickfix to move to package/module of sealed class/interface should not be shown in case of read-only declaration
KT-45348 Sealed interfaces: show error for usage of sealed class/interface from a library in Java source code
KT-46063 In multiplatform code, suggest to generate remaining when branches at least for shared sealed classes

IDE. Refactorings

KT-44431 Quickfix to move class/interface to proper location: it is allowed to choose test source in JPS project while compiler does not allow it

IDE. Native

KT-39320 [Commonizer] Reduce memory consumption

JavaScript

KT-40235 KJS: IR. Broken support for external interface companion
KT-40689 KJS / IR: strange and slow code for kotlin.math.max and kotlin.math.min for Double
KT-44138 KJS / IR: Constant folding works incorrectly with unsigned arithmetic
KT-44394 KJS / IR: null companion object for existed stdlib interfaces NodeFilter and SVGUnitTypes
KT-44950 KJS / IR: “IllegalStateException: Can't find name for declaration” in case of extending export declared class without @JsExport annotation
KT-45057 KJS / IR: “ClassCastException” when using js function in init block
KT-45361 KJS / IR: IrConstructorCall representing annotation always returns Unit
KT-46608 KJS: “Could not load content...” for source maps
KT-45655 KJS: “REINTERPRET_CAST” is not copyable
KT-45866 Default parameter with generic in expect-actual declarations
KT-46859 Exception during IR lowering: NullPointerException was thrown at: optimizations.FoldConstantLowering.tryFoldingUnaryOps

KMM Plugin

KT-43899 KMM: Fix “stale framework” usage by XCode & AppCode in default build script

Libraries

KT-43701 Stdlib: Expand KDoc of inc() and dec() for operators
KT-46002 Support all Unicode digit chars in digitToInt (JS and Native)
KT-46183 Add default value for ignoreCase in K/N String.replace/replaceFirst
KT-46184 Equivalize isLowerCase and isUpperCase behavior in all platforms

Native

KT-33175 IR: String constants with incorrect surrogate pairs aren't preserved during serialization/deserialization
KT-44799 Different behavior with functional interfaces in Kotlin/Native on iOS

Native. C Export

KT-42796 [Reverse C Interop] Package with no public methods generate empty struct in the header, leading to an error

Native. ObjC Export

KT-38600 Kotlin MP iOS Target doesn't contain kdoc comments
KT-45127 KMM: hard to pass an error to Kotlin code from implementation of Kotlin method in Swift code

Native. Runtime. Memory

KT-45063 Profiling indicates that a lot of time is spent on updateHeapRef on Apple platforms when running KMP code

Reflection

KT-10838 Provide sensible toString() for property accessors in reflection
KT-13490 Equality doesn't work for KProperty.Accessor implementations

Tools. CLI

KT-14772 ISE (FNFE “Not a directory”) on compilation with destination argument clashing with an existing file which is not a directory
KT-18184 CompileEnvironmentException: Invalid jar path on “-d” with .jar in non-existing directory
KT-40977 Report a readable diagnostic on empty -J argument in CLI

Tools. Commonizer

KT-45497 [Commonizer] c-interop commonization: Dependency commonization
KT-46077 [Commonizer] Add commonizer_target to commonized klib's manifest
KT-46107 [Commonizer] CInteropCommonizerTask receives faulty dependencies in multi module projects containing multiple c-interops
KT-46248 MPP: Compile KotlinMetadata fails with Unresolved reference if only one native platform from shared source set is available
KT-46856 [Commonizer] Many targets can fail with ‘filename too long’

Tools. Compiler Plugins

KT-7112 Support calling Lombok-generated methods within same module
KT-45538 Serialization, JVM IR: “AssertionError: No such type argument slot in IrConstructorCallImpl” with inner classes
KT-45541 JVM / IR / Serialization: NullPointerException caused by “Serializable” annotation and local data class
KT-46469 Kotlin Lombok: accessors with AccessLevel.MODULE fail to resolve
KT-46529 Kotlin Lombok: with @Accessors without explicit prefix the prefix from lombok.config is not taken into account
KT-46531 Kotlin Lombok: lombok.getter.noIsPrefix is processed depending on character case
KT-46920 NullPointerException in CodeGeneratorVisitor when packing for xcode

Tools. Gradle

KT-24533 Kapt should not run when annotation processors are not configured
KT-43988 Enable plugin validation during build
KT-45301 Gradle: Empty build/kotlin dir with custom build directory
KT-45519 loadAndroidPluginVersion() impacts performance negatively and noticeably in multimodule Android build
KT-45744 Create Kotlin Gradle Plugin JUnit5 basic test setup
KT-45834 Gradle Plugin read system property related to kotlinCompilerClasspath breaks use of configuration cache
KT-46401 Deprecate ‘kotlin.parallel.tasks.in.project’ build property
KT-46820 Gradle: kotlinc (1.5.0) race condition causes a NullPointerException
KT-47317 Restore ‘kotlinPluginVersion’ property in ‘KotlinBasePluginWrapper’

Tools. Gradle. JS

KT-42911 Support Gradle configuration cache for K/JS tasks
KT-45294 KJS / Gradle: Number of modules in project affects JS tasks configuration cache state size
KT-45754 KJS / IR: Remove adding option of source maps in Gradle plugin
KT-46178 KJS / Dukat: Added as a dependency always without condition
KT-46976 KJS: Broken support for dynamically created webpack.config.d
KT-47045 [Gradle, JS] Task requirements are added to all compilations with same name

Tools. Gradle. Multiplatform

KT-36679 MPP Gradle plugin: Improve messaging for the commonizer
KT-45832 CInteropCommonization: Filter out illegal dependencies
KT-46394 Multiplatform: Gradle 7 support
KT-46517 Add kotlin-project-model as api dependency to kotlin-gradle-plugin-api

Tools. Gradle. Native

KT-27240 MPP Gradle plugin: Provide a framework packing task for Kotlin/Native
KT-39016 Missing stdlib when the downloading process was aborted
KT-40907 Xcode error after switching between device and simulator: Building for iOS, but the linked and embedded framework was built for iOS Simulator.
KT-44059 iosSimTest tasks are never up-to-date
KT-45801 compileIosMainKotlinMetadata compilation property of gradle task is not initialized and fails with Execution failed for task ':shared:generateProjectStructureMetadata'
KT-46680 Register concrete “embedAndSign” tasks instead umbrella
KT-46892 Kotlin Multiplatform Gradle Plugin: EmbedAndSign task always contains a default framework name

Tools. Incremental Compile

KT-44741 Incremental compilation: inspectClassesForKotlinIC doesn't determine changes with imported constant

Tools. JPS

KT-34351 KotlinTargetsIndex creation takes too long even if project doesn't have any kotlin
KT-45191 [JPS] Marking method as “default” in Java SAM interface doesn't affect dependencies
KT-46242 Support Lombok kotlin plugin in JPS and maven

Tools. kapt

Performance Improvements

KT-28901 Consider caching annotation processors classloaders

Fixes

KT-27123 kapt: missing space in error log makes location non-clickable
KT-29929 [Kapt] Stub generator uses constant value in method annotation instead of constant name 2.
KT-31146 kapt: executableElement.getAnnotation(JvmOverloads::class.java) returns null
KT-32202 Gradle task kaptKotlin fails: “module not found” in Java 11 modular application
KT-34838 Kapt: ‘cannot find symbol’ for a top-level property with anonymous delegate
KT-35104 Support @JvmStatic in KAPT stubs
KT-35167 Kapt Gradle plugin doesn't handle --module-path javac argument
KT-37586 KAPT: When delegated property use an unknown type (to-be-generated class), correctTypeError will mess up the $delegate field type
KT-39060 Kapt: correctErrorTypes don't retain return type of getter in Java stub
KT-39715 KaptGenerateStubsTask resolves annotation processor options too early (before execution time)
KT-41581 Kapt doesn't have line breaks between warnings
KT-43804 Kapt fails to preserve parameter names in open suspend functions
KT-43686 KaptWithoutKotlincTask should use @CompileClasspath for kotlinStdlibClasspath for cache relocateability.
KT-45032 Kapt: NullPointerException: insnList.first must not be null
KT-46176 Kapt: “java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 3” with delegation and property reference

1.5.20-RC

Backend. IR

KT-42239 IR: Report compilation error instead of throwing an exception (effectively crash compiler) when some declaration wasn't found while deserialization

Compiler

New Features

KT-44373 FIR: support error / warning suppression

Fixes

KT-38342 FIR: Consider renaming diagnostic from AMBIGUITY to OVERLOAD_RESOLUTION_AMBIGUITY
KT-38476 [FIR] Forgotten type approximation
KT-44682 raw FIR: incorrect source for qualified access
KT-44813 FIR bootstrap: various errors in collection-like classes
KT-45508 False negative ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED on a fake override with an abstract super class member
KT-45578 REPL: Unresolved imports are cached for the subsequent compilations
KT-45685 JVM IR: capturing a variable into crossinline suspend lambda makes the function inside inline function no longer unbox Result
KT-46235 JVM IR: Stack overflow error on large expressions
KT-46578 JVM IR: IllegalAccessError accessing property delegated to java super class protected field reference
KT-46597 JVM IR: AssertionError: SyntheticAccessorLowering should not attempt to modify other files - crossinline accessor
KT-46601 JVM / IR: IllegalStateException: “Can't find method 'invokeinvoke`” when default lambda takes inline class parameters
KT-46759 JVM IR: CCE in LateinitUsageLowering on @JvmStatic lateinit property in object
KT-46777 [Native] [IR] Support suspend function as super type
KT-46802 JVM / IR: “UnsupportedOperationException: Unknown structure of ADAPTER_FOR_CALLABLE_REFERENCE” caused by function reference on @JvmStatic function with unused default parameters
KT-46813 JVM / IR: “ClassCastException: Integer cannot be cast to class Result” with Flow and fold method
KT-46822 JVM IR: StackOverflowError on compiling a large data class
KT-46837 Backend Internal error: Exception during IR lowering: assert at IrOverridingUtilKt.buildFakeOverrideMember
KT-46921 JVM / IR: “IndexOutOfBoundsException: Cannot pop operand off an empty stack” caused by crossinline parameter and label return

Docs & Examples

KT-33783 Document when a range created with rangeTo is empty

IDE

KT-44825 Can't open Kotlin compiler settings in newly created project

IDE. Gradle Integration

KT-45277 Wrong jvm target in gradle module in IDEA

IDE. Native

KT-39320 [Commonizer] Reduce memory consumption

JavaScript

KT-44394 KJS / IR: null companion object for existed stdlib interfaces NodeFilter and SVGUnitTypes
KT-45361 KJS / IR: IrConstructorCall representing annotation always returns Unit
KT-46859 Exception during IR lowering: NullPointerException was thrown at: optimizations.FoldConstantLowering.tryFoldingUnaryOps

Libraries

KT-46002 Support all Unicode digit chars in digitToInt (JS and Native)
KT-46184 Equivalize isLowerCase and isUpperCase behavior in all platforms

Middle-end. IR

KT-40425 IrGenerationExtension. Support simple reporting to compiler output (for development/debug)
KT-45308 Psi2ir: “AssertionError: TypeAliasDescriptor expected” caused by using typealias from one module as a type in another module without a transitive dependency

Native. ObjC Export

KT-38600 Kotlin MP iOS Target doesn't contain kdoc comments

Reflection

KT-10838 Provide sensible toString() for property accessors in reflection

Tools. CLI

KT-14772 ISE (FNFE “Not a directory”) on compilation with destination argument clashing with an existing file which is not a directory
KT-18184 CompileEnvironmentException: Invalid jar path on “-d” with .jar in non-existing directory
KT-40977 Report a readable diagnostic on empty -J argument in CLI

Tools. Compiler Plugins

KT-45538 Serialization, JVM IR: “AssertionError: No such type argument slot in IrConstructorCallImpl” with inner classes
KT-46469 Kotlin Lombok: accessors with AccessLevel.MODULE fail to resolve
KT-46529 Kotlin Lombok: with @Accessors without explicit prefix the prefix from lombok.config is not taken into account
KT-46531 Kotlin Lombok: lombok.getter.noIsPrefix is processed depending on character case

Tools. Gradle

KT-24533 Kapt should not run when annotation processors are not configured
KT-46401 Deprecate ‘kotlin.parallel.tasks.in.project’ build property
KT-46820 Gradle: kotlinc (1.5.0) race condition causes a NullPointerException

Tools. Gradle. JS

KT-46976 KJS: Broken support for dynamically created webpack.config.d

Tools. Gradle. Multiplatform

KT-46394 Multiplatform: Gradle 7 support
KT-46517 Add kotlin-project-model as api dependency to kotlin-gradle-plugin-api

Tools. Gradle. Native

KT-46680 Register concrete “embedAndSign” tasks instead umbrella
KT-46892 Kotlin Multiplatform Gradle Plugin: EmbedAndSign task always contains a default framework name

Tools. kapt

KT-31146 kapt: executableElement.getAnnotation(JvmOverloads::class.java) returns null
KT-35167 Kapt Gradle plugin doesn't handle --module-path javac argument
KT-41581 Kapt doesn't have line breaks between warnings

1.5.20-M1

Compiler

New Features

KT-45189 Support nullability annotations at module level
KT-45525 Allow to omit JvmInline annotation for expect value classes
KT-46545 Emit annotations on function type parameters into bytecode for -jvm-target 1.8 and above

Performance Improvements

KT-36646 Don't box primitive values in equality comparison with objects in JVM_IR

Fixes

KT-8325 Unresolved annotation should be an error
KT-19455 Type annotation unresolved on a type parameter of a supertype in anonymous object expression
KT-24643 Prohibit using a type parameter declared for an extension property inside delegate
KT-25876 Annotations on return types and supertypes are not analyzed
KT-28449 Annotation target is not analyzed in several cases for type annotations
KT-36770 Prohibit unsafe calls with expected @NotNull T and given Kotlin generic parameter with nullable bound
KT-38325 IllegalStateException: No parameter with index 0-0 when iterating Scala 2.12.11 List
KT-38540 Kotlin/Native Set.contains fails with specific enum setup
KT-41620 ClassCastException: Class cannot be cast to java.lang.Void
KT-41679 NI: TYPE_MISMATCH wrong type inference of collection with type Any and integer literal
KT-41818 NI: False positive IMPLICIT_NOTHING_TYPE_ARGUMENT_IN_RETURN_POSITION leads to NothingValueException on delegated properties
KT-42631 ArrayIndexOutOfBoundsException was thrown during IR lowering
KT-43258 NI: False positive “Suspend function ‘invoke’ should be called only from a coroutine or another suspend function” when calling suspend operator fun on object property from last expression of a crossinlined suspend lambda
KT-44036 Enum initialization order
KT-44511 FIR DFA: smartcast after if (nullable ?: boolean)
KT-44554 RAW FIR: NPE in RawFirBuilder
KT-44695 *_TYPE_MISMATCH_ON_OVERRIDE checkers do not work for anonymous objects
KT-44699 FIR: incorrect lambda return type (led to a false alarm: PROPERTY_TYPE_MISMATCH_ON_OVERRIDE)
KT-44802 FIR bootstrap: trying to access package private class
KT-44814 FIR bootstrap: incorrect cast in when branch
KT-44942 [FIR] ClassCastException in boostrap tests
KT-44995 FIR: false positive for ANNOTATION_ARGUMENT_MUST_BE_CONST
KT-45010 FIR: lambda arguments of inapplicable call is not resolved
KT-45048 FIR bootstrap: VerifyError on KtUltraLightClass
KT-45052 FIR bootstrap: inapplicable candidate in GenerateSpecTests.kt
KT-45121 FIR IDE: redundant vararg parameter type transformation
KT-45136 Native: dividing Int.MIN_VALUE by -1 crashes or hangs
KT-45316 [FIR] Ambiguity between two implicit invokes with receiver
KT-45344 FIR: Wrong inferred type for nullable type parameter
KT-45475 [FIR] No smartcast after throw in if inside try block
KT-45584 [FIR] Fix overriding property and java function in java class
KT-45697 JVM IR: ISE “Function has no body” on getter of private field in a class present both in sources and dependencies
KT-45842 Compiler doesn't allow a shared class to inherit a platform-specific sealed class
KT-45848 False negative [SEALED_INHERITOR_IN_DIFFERENT_MODULE] error in compiler for a platform-specific inheritor of a shared sealed class
KT-46048 Enum entries init order in companion object
KT-46074 FIR: private-in-file fun interface is considered invisible in this file
KT-46173 No error reporting on annotations on target type of as expression in return
KT-46270 [FIR] Support @PublishedAPI in inline checker
KT-46539 Generate annotations on type parameters bounds in bytecode
KT-46670 StackOverflowError on inheritance from raw type where class has protobuf-like recursive generics
KT-46715 JVM / IR: “AssertionError: Unbound symbols not allowed IrConstructorSymbolImpl” with enum classes with the same name in test and src folders

IDE

KT-44638 clone() call is unresolved in JVM module of a multiplatform project
KT-45629 [ULC] KtUltraLightFieldForSourceDeclaration.nameIdentifier returns null
KT-45908 Reproduciable ‘org.jetbrains.kotlin.idea.caches.resolve.KotlinIdeaResolutionException: Kotlin resolution encountered a problem while analyzing KtNameReferenceExpression’

IDE. FIR

KT-45175 FIR IDE: Exception with local property in init block
KT-45199 FIR IDE: Error while collecting diagnostic on stale element after replacing element in quickfix
KT-45312 FIR IDE: FIR plugin throws exception on synthetic function

IDE. Gradle Integration

KT-34401 KotlinGradleModelBuilder builds models for non-kotlin modules and always trigger full task configuration.
KT-46488 Import of a multiplatform project with MPP module depending on Kotlin/JVM one fails

IDE. Inspections and Intentions

KT-45075 Inspection: Redundant creation of Json format
KT-45347 Sealed interfaces: quickfix to move to package/module of sealed class/interface should not be shown in case of read-only declaration
KT-45348 Sealed interfaces: show error for usage of sealed class/interface from a library in Java source code
KT-46063 In multiplatform code, suggest to generate remaining when branches at least for shared sealed classes

IDE. Refactorings

KT-44431 Quickfix to move class/interface to proper location: it is allowed to choose test source in JPS project while compiler does not allow it

JavaScript

KT-40235 KJS: IR. Broken support for external interface companion
KT-40689 KJS / IR: strange and slow code for kotlin.math.max and kotlin.math.min for Double
KT-44138 KJS / IR: Constant folding works incorrectly with unsigned arithmetics
KT-44950 KJS / IR: “IllegalStateException: Can't find name for declaration” in case of extending export declared class without @JsExport annotation
KT-45057 KJS / IR: “ClassCastException” when using js function in init block
KT-45655 KJS: “REINTERPRET_CAST” is not copyable
KT-45866 Default parameter with generic in expect-actual declarations

Libraries

KT-43701 Stdlib: Expand KDoc of inc() and dec() for operators

Middle-end. IR

KT-36880 K/N IR: Reference to expect property in actual declaration is not remapped
KT-45236 JVM / IR: “IllegalStateException: Symbol with IrTypeParameterSymbolImpl is unbound” caused by contracts and sealed class

Native

KT-33175 IR: String constants with incorrect surrogate pairs aren't preserved during serialization/deserialization
KT-44799 Different behavior with functional interfaces in Kotlin/Native on iOS

Native. C Export

KT-42796 [Reverse C Interop] Package with no public methods generate empty struct in the header, leading to an error

Native. ObjC Export

KT-45127 KMM: hard to pass an error to Kotlin code from implementation of Kotlin method in Swift code

Native. Runtime. Memory

KT-45063 Profiling indicates that a lot of time is spent on updateHeapRef on Apple platforms when running KMP code

Reflection

KT-13490 Equality doesn't work for KProperty.Accessor implementations

Tools. Commonizer

KT-45497 [Commonizer] c-interop commonization: Dependency commonization
KT-46077 [Commonizer] Add commonizer_target to commonized klib's manifest
KT-46107 [Commonizer] CInteropCommonizerTask receives faulty dependencies in multi module projects containing multiple c-interops
KT-46248 MPP: Compile KotlinMetadata fails with Unresolved reference if only one native platform from shared source set is available

Tools. Compiler Plugins

KT-7112 Support calling Lombok-generated methods within same module
KT-45541 JVM / IR / Serialization: NullPointerException caused by “Serializable” annotation and local data class

Tools. Gradle

KT-43988 Enable plugin validation during build
KT-45301 Gradle: Empty build/kotlin dir with custom build directory
KT-45519 loadAndroidPluginVersion() impacts performance negatively and noticeably in multimodule Android build
KT-45744 Create Kotlin Gradle Plugin JUnit5 basic test setup
KT-45834 Gradle Plugin read system property related to kotlinCompilerClasspath breaks use of configuration cache

Tools. Gradle. JS

KT-42911 Support Gradle configuration cache for K/JS tasks
KT-45294 KJS / Gradle: Number of modules in project affects JS tasks configuration cache state size
KT-45754 KJS / IR: Remove adding option of source maps in Gradle plugin
KT-46178 KJS / Dukat: Added as a dependency always without condition

Tools. Gradle. Multiplatform

KT-36679 MPP Gradle plugin: Improve messaging for the commonizer
KT-45832 CInteropCommonization: Filter out illegal dependencies

Tools. Gradle. Native

KT-39016 Missing stdlib when the downloading process was aborted
KT-44059 iosSimTest tasks are never up-to-date
KT-45801 compileIosMainKotlinMetadata compilation property of gradle task is not initialized and fails with Execution failed for task ':shared:generateProjectStructureMetadata'

Tools. Incremental Compile

KT-44741 Incremental compilation: inspectClassesForKotlinIC doesn't determine changes with imported constant

Tools. JPS

KT-34351 KotlinTargetsIndex creation takes too long even if project doesn't have any kotlin
KT-45191 [JPS] Marking method as “default” in Java SAM interface doesn't affect dependencies
KT-46242 Support Lombok kotlin plugin in JPS and maven

Tools. kapt

Performance Improvements

KT-28901 Consider caching annotation processors classloaders

Fixes

KT-27123 kapt: missing space in error log makes location non-clickable
KT-29929 [Kapt] Stub generator uses constant value in method annotation instead of constant name 2.
KT-32202 Gradle task kaptKotlin fails: “module not found” in Java 11 modular application
KT-34838 Kapt: ‘cannot find symbol’ for a top-level property with anonymous delegate
KT-35104 Support @JvmStatic in KAPT stubs
KT-37586 KAPT: When delegated property use an unknown type (to-be-generated class), correctTypeError will mess up the $delegate field type
KT-39060 Kapt: correctErrorTypes don't retain return type of getter in Java stub
KT-39715 KaptGenerateStubsTask resolves annotation processor options too early (before execution time)
KT-43804 Kapt fails to preserve parameter names in open suspend functions
KT-45032 Kapt: NullPointerException: insnList.first must not be null
KT-46176 Kapt: “java.lang.IndexOutOfBoundsException: Index -1 out of bounds for length 3” with delegation and property reference