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

1.5.10

Compiler

Fixes

KT-41078 Incorrect type substitution in contracts with type parameters
KT-44770 JVM / IR: "IllegalArgumentException: Unrecognized Type: [null]" Jackson doesn't recognize type
KT-45084 JVM IR: "NoSuchElementException: Sequence contains no element matching the predicate" when inline class is passed to lambda with >22 parameters
KT-45779 JVM / IR: java.lang.NoSuchMethodError: 'int java.lang.Integer.plus(int)' caused by function reference
KT-45941 JVM IR: local functions use generic type parameters of the outer class in the bytecode, which breaks Bytebuddy and MockK
KT-46149 Generate synthetic classes for SAM adapters with erased instead of generic supertype
KT-46189 JVM IR: tailrec function with capturing lambda in default parameter value leads to NoSuchMethodError at runtime
KT-46214 JVM / IR: "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" on a suspend function in an inner class
KT-46238 JVM IR: BootstrapMethodError in JDK 11+ on intersection type passed in arguments of SAM adapter where SAM interface's type parameter has a non-trivial upper bound
KT-46259 JVM IR: local function for adapted function reference is not declared as ACC_SYNTHETIC
KT-46284 JVM IR: "Unbound private symbol IrClassSymbol" on class reference to script class
KT-46402 IllegalAccessError: "CapturedLambdaInterpreter (in unnamed module @0x71b06418) cannot access class jdk.internal.org.objectweb.asm.Type" caused by inline function with a suspend parameter in Maven project
KT-46408 JVM IR: BootstrapMethodError due to missing bridge for subclass of generic Java interface
KT-46426 JVM IR: Corrupted .class file when passing Array constructor reference as (inline) lambda
KT-46455 OOM on parsing invalid code with string interpolation
KT-46503 JVM IR: "AssertionError: Unexpected variance in super type argument: out @1"
KT-46505 JVM IR: NullPointerException caused by a callable reference with nullable inline value class parameter
KT-46512 JVM / IR: NoSuchMethodError on SAM conversion of a function reference
KT-46515 IndexOutOfBoundsException: "Empty list doesn't contain element at index 0." on bad variable name in 1.5.0
KT-46516 JVM IR: "AnalyzerException: Expected I, but found R" on subclassing AbstractMutableList
KT-46524 Cannot use unsigned literals with api-version < 1.5 even with opt-in
KT-46537 JVM / IR: "IllegalStateException: No noarg super constructor for CLASS" caused by "No-arg" plugin with annotation on child class
KT-46540 JVM / IR: AnalyzerException: Expected an object reference, but found J caused by java.function.Supplier
KT-46554 JVM IR: "IllegalStateException: No mapping for symbol: VAR IR_TEMPORARY_VARIABLE" with value class constructor delegation call
KT-46555 JVM IR: IllegalAccessError when using Java method reference
KT-46562 Kotlin 1.5.0 generates non-serializable lambdas when they should be serializable
KT-46568 JVM IR: "AssertionError: IrCall expected inside JvmStatic wrapper" on compiling protected static function with return type Nothing inside companion object of abstract class
KT-46574 JVM / IR: ClassCastException caused by runBlocking awaiting call while returning Kotlin.Result type.
KT-46579 JVM IR: "IllegalArgumentException: Sequence contains more than one matching element" for Java enum with overloaded values() static method
KT-46584 JVM IR: Intrinsics.needClassReification (UnsupportedOperationException thrown). Property delegate provider crossinline lambda inlining/reification issue
KT-46751 JVM / IR:"ClassCastException: java.lang.String cannot be cast to java.lang.Void" in extension function in Kotlin 1.5

IDE

KT-45981 failed to analyze: java.lang.AssertionError: diagnostic callback has been already registered: Code analysis get stuck in AS 2020.3.1.14 & Kotlin v1.5.0-M2
KT-46622 60+ second freezes with Kotlin plugin 1.5.0: GetModuleInfoKt.findJvmStdlibAcrossDependencies

IDE. Gradle Integration

KT-46417 [UNRESOLVED_REFERENCE] For project to project dependencies of native platform test source sets

Libraries

KT-46280 JvmRecord annotation missing constructor in common

Middle-end. IR

KT-44013 NPE: When calling constructor of a function type while inheriting from it, despite it's an interface

Tools. Android Extensions

KT-46590 Kotlin Android Extensions 1.5.0 generates bad writeToParcel() method for nullable Array types

Tools. Gradle

KT-41142 Kotlin version conflict when using Kotlin Gradle plugins in pre-compiled script plugin
KT-46353 Optimizations disabled in Gradle 7 for KAPT when generating sources
KT-46368 Memory leak with 1.5.0-RC when building with Gradle
KT-46689 Track -Xuse-old-backend flag usage

Tools. Gradle. JS

KT-46006 KJS \ Gradle: Task without declaring an explicit or implicit dependency on jsGenerateExternalsIntegrated in Gradle 7
KT-46162 KJS: Exported items unavailable on dev server
KT-46331 KJS: With kotlin.js.webpack.major.version=4 browserXRun tasks fail

Tools. Parcelize

KT-46567 Kotlin 1.5.0 parcelize compilation fails in new backend when using TypeParceller with nested generics

Tools. kapt

KT-45532 Do not create Kapt stubs directory during configuration time

1.5.0

Backend. Native

KT-42053 Support compiler caches for linux_x64
KT-43690 Support compiler caches for ios_arm64

Backend. IR

KT-42684 StackOverflowError on recursive inline arguments in inline fun

Compiler

New Features

KT-28791 Kotlin serialization with inline classes
KT-30222 Support JVM target version selection in Kotlin bytecode tool window
KT-41884 Support 'file' target for JvmSynthetic annotation
KT-43677 Support for Java records
KT-43920 Support loading binary Java annotations on fields
KT-44278 Generate SAM-converted lambdas and function references using 'invokedynamic' on JDK 1.8+
KT-44650 Deprecate JVM target version 1.6
KT-44787 Suspend functions in fun interfaces
KT-44865 Allow to declare protected constructors in sealed classes
KT-44869 Compiling sealed interface with version less than 1.5: error message from future could be provided

Performance Improvements

KT-6336 Optimize generation of local functions
KT-7307 Optimize infix call of String.plus
KT-18692 Optimize '<optimizable_range> step x' for-in loop
KT-19978 Inefficient bytecode generated for function references undergoing Java SAM conversion
KT-23565 OperationsMapGenerated.kt generates unreasonable amount of bytecode
KT-23825 Tail suspend call utilizing elvis operator does not take advantage of suspend tail call optimization
KT-23826 A suspend function on the right side of a returned || condition is not tail call optimized
KT-25348 No compile time unsigned integer conversion when using hex literal
KT-26060 Support a compiler mode to compile lambda expressions using invokedynamic instruction
KT-26590 Do not generate create method for suspend lambdas if its arity >= 2
KT-27427 Optimize nullable check introduced with 'as' cast
KT-28246 Redundant boxing/unboxing isn't eliminated by the compiler in case of inline classes and javaClass intrinsic
KT-30605 Constant folding doesn't evaluate inv() function
KT-36845 Generate enum-based TABLESWITCH/LOOKUPSWITCH on a value with smart cast to enum in JVM_IR
KT-39585 JVM BE generates redundant accessor calls when accessing static final field lifted from companion
KT-40886 Old JVM BE unspills ACONST_NULL from continuation
KT-42621 Kotlin binary size considerably larger for code extensively using stream API
KT-44153 NI: Low Memory and IntelliJ hangs when quotes in split() are missed
KT-45410 JVM / IR: Extreme performance regression on arithmetic operations inside a loop

Fixes

KT-6007 Support changed return type of inlined generic function when lambda returns anonymous object
KT-6055 Failed invoke plus assign on array element accessed via several args through local get/set convention extensions
KT-6879 CompilationException when local classes hierarchy is placed within other local or inner declaration
KT-8120 NoSuchMethodError on local class constructor call inside a local class
KT-8199 "Cannot pop operand off an empty stack" for local class using a captured variable as default value for constructor parameter
KT-10835 "AssertionError: Non-outer parameter incorrectly mapped to outer" when inlining object literal extending inner class
KT-12790 Don't generate synthetic accessors for private inline function/properties
KT-13213 IllegalArgumentException in ByteVector.putUTF8 on attempt to compile file with moderately long string literal
KT-14628 "UnsupportedOperationException: Don't know how to generate outer expression" for nested class inheriting from inner class with a companion object
KT-14833 JVM internal error: Augment assignment and increment are not supported for local delegated properties and inline properties
KT-15403 Suspend operator get wrong code generated by BE (NoSuchMethodError)
KT-15404 Suspend operator set wrong code generated
KT-16084 Proguard can't find enclosing class of let closure inside apply closure
KT-16151 Internal compiler error when using plusAssign operator with mutable map
KT-16221 Support in/!in suspend operators
KT-16282 "Cannot pop operand off an empty stack" for plusAssign with default parameters in setter operator
KT-16445 java.lang.VerifyError: Bad type on operand stack when delegating an interface through a private reified function inside an object
KT-16520 Invalid bytecode semantics for set call by convention with default parameters
KT-16567 Inliner creates redundant objects on source inlining
KT-16752 Delegating function interface to function reference does not work
KT-17554 Incorrect cast to Unit generated on annotated when-expression with a single-branch if inside
KT-17738 Java cannot extend class implementing kotlin.collections.Map
KT-17753 Strange behavior of if and return statements
KT-18583 "ISE: Recursive call in a lazy value" for generic sealed class with nested subclass in a when(this) with inferred return type
KT-19861 "IllegalStateException: Label wasn't found during iterating through instructions" for plusAssign with safe call
KT-20306 Make 'when' over an 'expect' enum class non-exhaustive
KT-20869 kotlin.jvm.internal.DefaultConstructorMarker should be public
KT-20996 IllegalStateException: Cannot get FQ name of local class: class in metadata serialization for common code
KT-21014 Incorrect bytecode generated for 'PrimitiveArray::size'
KT-21092 Reference javaClass for generic property: "couldn't transform method node: get()"
KT-21778 "IllegalStateException: Couldn't build context" for inline function inside an anonymous object
KT-21900 VerifyError on equals on generic primitive type
KT-22098 "UnsupportedOperationException: Don't know how to generate outer expression" on extension function call inside lambda in anonymous object super constructor call
KT-22488 Bad line numbers generated for '&&' expression
KT-22972 A compiler bug(?) in Number class descendants
KT-23619 Transform stateless singleton lambda during inline
KT-23881 Declaration of lambda in inlined apply block holds reference to superfluous references causing leak
KT-24135 Calling invoke on crossinline suspend lambda leads to no state-machine
KT-24193 NoClassDefFoundError: java/lang/Cloneable$DefaultImpls on inheritance from Cloneable through an interface
KT-24305 ClassNotFoundException when using Java reflection on local class in an inlined lambda
KT-24564 Custom operator fun set on ByteArray resolves properly but is miscompiled
KT-25400 "NoClassDefFoundError: kotlin/KotlinPackage" with Turkish system locale on macOS
KT-26130 Incorrect method signature for a generic function with inline class as a type parameter upper bound
KT-26360 "Method from super interface has a different signature" for Interface that extends both interfaces with and without @JvmDefault
KT-26473 Error on compiling inline class with calls of super methods equals(), hashCode(), toString()
KT-26474 VE “Bad type on operand stack” at runtime on calling toString() method of inline class with calls of super methods (toString(), equals(), hashCode()) inside
KT-26592 Do not generate private suspend functions as synthetic package-private
KT-27449 NoSuchMethodError for local suspend function with suspend lambda parameter with default value
KT-27469 "Cannot pop operand off an empty stack" for compound assignment (plusAssign) with a vararg operator get
KT-27825 Gradually prohibit non-abstract classes containing abstract members invisible from that classes (internal/package-private)
KT-27830 "Incompatible stack heights" with suspend inline function in do while loop that executes suspend lambda
KT-28042 "Cannot pop operand off an empty stack" for a bound callable reference of lambda inside inline function
KT-28166 "Argument 1: expected I, but found R" for generic method with generic parameter or receiver with inline class upper bound
KT-28331 Consider generating accessors for lateinit properties to avoid assertion on each call
KT-28573 Inliner does not update references to transformed object
KT-29331 "AnalyzerException: Argument 1: expected R, but found I" with local generic extension property called on Int receiver
KT-29595 NoClassDefFoundError with inline reified function with lambda argument returning anonymous object
KT-29802 Incorrect reification when the same type parameter name is used for different reified types
KT-30041 "AnalyzerException: Expected an object reference, but found ." on nested suspend function calls outer suspend function
KT-30066 Consider adding annotations to ConeKotlinType
KT-30280 Inline class class literal gets unwrapped in annotation arguments
KT-30402 Constant folding works incorrectly with unsigned arithmetics
KT-30548 "java.lang.IndexOutOfBoundsException: Cannot pop operand off an empty stack" while compiling access to a private lateinit companion field
KT-30629 java.lang.VerifyError: Bad type on operand stack when using a function reference to a generic property
KT-30933 Inline function produces IllegalAccessError on property reference from different package
KT-31136 "AnalyzerException: Argument 1: expected R, but found I" on x::javaClass when x is inline class object built around primitive type
KT-31227 Prohibit using array based on non-reified type parameters as reified type arguments on JVM
KT-31592 NoSuchMethodException when inlining public function accessing a protected static Java class member
KT-31727 Object expression captures all variables used in constructor
KT-32023 "AnalyzerException: Expected I, but found R" with inline suspend function used with callable reference
KT-32115 NPE during initialization of enum class with delegated property
KT-32153 "AnalyzerException: Expected an object reference, but found ." with recursive suspend local function
KT-32351 ClassNotFoundException for anonymous object implementing interface inside a lambda with data class and inline methods
KT-32384 Safe cast to generic type argument with inline class upper-bound throws NPE instead of ClassCastException
KT-32579 java.lang.VerifyError: Bad type on operand stack on calling inner class of inherited class in super class when casting to inherited class
KT-32749 "VerifyError: Call to wrong method" with inline function and accessing class field from anonymous object
KT-32793 Generated code crashes by ClassCastException with local suspend function and inline class
KT-32812 "AnalyzerException: Argument 1: expected R, but found I" invoking function with default parameter inherited by inline class
KT-32821 Missing unboxing of inline class for complex hierarchy of suspend calls
KT-33155 ClassNotFoundException for qualified this in anonymous object and as a result of inline function call
KT-33173 Internal error: "AnalyzerException: Expected I, but found R" for supercall inside inline lambda from HashSet.remove implementation
KT-33577 NoSuchFieldError with nested anonymous objects accessing outer instance property
KT-33836 Wrong code generated for a local tailrec suspend function.
KT-33873 ClassCastException invoking UByte setter function via reflection
KT-34018 "Cannot pop operand off an empty stack" with inline lambda with callable reference
KT-34186 JDK11: class file contains malformed variable arity method for vararg sealed class constructor
KT-34202 IllegalAccessError on callable reference of function from multifile facade from standard library
KT-34255 @JvmStatic tailrec function: "Cannot pop operand off an empty stack"
KT-34507 Incorrect generated code for mutable collection stub methods in case of presence of functions with similar signature
KT-34665 Possible index overflow in optimized "for" loop over withIndex()
KT-34754 Flow builder: "AnalyzerException: Expected an object reference, but found ." with recursive suspend local function
KT-34816 "AnalyzerException: Expected an object reference, but found I" on "this" in inline class member extension suspend function
KT-34841 ClassNotFoundException when invoke param function inside anonymous object method
KT-35008 "AnalyzerException: Expected an object reference, but found I" in inline class companion calling private constructor
KT-35166 NoSuchMethodError at runtime with local property delegate on anonymous object referencing another anonymous object
KT-35224 It's possible to pass non-spread arrays after arguments with SAM-conversion
KT-35301 MethodInliner fails with "AssertionError: call doesn't correspond to object transformation info" for qualified this in SAM constructor used as parameter of anonymous object inside inline lambda
KT-35419 Failed to generate expression: KtNamedFunction for local suspend tailrec function with receiver
KT-35511 VerifyError: "Bad type on operand stack" after reification
KT-35553 Kotlin compiler generates methods that always have line number 1 for Inline Classes
KT-35725 "AssertionError: Couldn't find a context for a super-call" for super member call in property initializer of companion object
KT-36420 ClassCastException with inline class Foo extending generic Comparable
KT-36713 AnalyzerException: "Incompatible stack heights" with suspend and inline suspend functions
KT-36794 Move $assertionsDisabled field to the top-level class
KT-36853 IR: UninitializedPropertyAccessException on tailrec with object expression in default argument
KT-36875 "RuntimeException: Trying to access skipped parameter" on synthetic local variable access from inline function
KT-36916 AnalyzerException: Argument 1: expected I, but found R when using inline class with rxjava
KT-36957 Exception during codegen: cannot pop operand off an empty stack (Nothing variable in string interpolation)
KT-36984 SAM adapter classes should be generated as anonymous inner classes in JVM_IR
KT-37704 Incorrect SMAP syntax
KT-37716 "AssertionError: call doesn't correspond to object transformation info" with inline reified type parameter, anonymous object and lambda in constructor call
KT-37972 IllegalAccessError on initializing property reference for a property declared in JvmMultifileClass with -Xmultifile-parts-inherit
KT-38100 Support local delegated properties (not inlined) in new JVM default modes
KT-38833 JVM: java.lang.ClassCastException when loop variable is nullable in for loop over unsigned progression
KT-38849 Read-only variable initialized in non-inline lambda using contract callsInPlace EXACTLY_ONCE is not captured correctly in nested lambdas
KT-38869 JVM BE produces invalid bytecode when inheriting from AbstractList and declaring methods that look like MutableList implementors (but they aren't)
KT-38965 "UnsupportedOperationException: Don't know how to generate outer expression: Closure" with reference to local variable in block argument of anonymous object by delegation
KT-39289 CCE in if-else inside annotated 'if' statement
KT-39425 AbstractMethodError: "Receiver class does not define or inherit an implementation of the resolved method" using classes with complex Java and Kotlin inheritance hierarchies.
KT-39434 IllegalAccessError with local delegated property in lambda in inlined function
KT-39687 "Couldn't find captured this" when more than 3 inline functions are nested
KT-39784 "IndexOutOfBoundsException: Cannot pop operand off an empty stack" caused by JvmOverloads annotation inside an inline class
KT-40165 ClassCastException caused by SAM conversion used on a functional interface with suspended function
KT-40179 "VerifyError: Bad type on operand stack" with parent class get extension function and child class set extension function which used inside child class plusAssign extension function
KT-40277 Fix generic types in special bridge methods
KT-40308 NoSuchFieldError for multiple delegated extension properties with the same name in a companion object
KT-40338 NoSuchFieldError on property without backing field that is called as function reference
KT-40392 Deprecate JvmDefault annotation and old -Xjvm-default modes
KT-40396 NI: Exceptions when ambiguous type argument and generic invoke
KT-40510 "AssertionError: DELEGATION slice must override something" for ByteBuffer delegation
KT-40601 VerifyError: "interface method reference is in an indirect superinterface" when calling @JvmDefault suspend method
KT-40809 "Couldn't find captured field" compiler error with local function with recursive call through method reference
KT-41056 Increase stub version due to new "contract" keyword
KT-41105 IllegalStateException: 'Couldn't find declaration file ' with inline delegate declared in another file
KT-41165 "IllegalStateException: Concrete fake override public final fun" when an enum class inherits an interface with a variable 'name' or 'ordinal'
KT-41222 "IllegalStateException: Concrete fake override public final fun" when a class property is inherited as merged 'var' from 'val' and 'var' from parent abstract class and interface properties
KT-41255 JDK 11: "VerifyError: Bad type on operand stack" with long function body with annotated when expression
KT-41427 NoSuchMethodError caused by implementation by delegation to function reference
KT-41508 ClassNotFoundException caused by object with overridden function inside a lambda with safe cast receiver
KT-41750 Inline classes: ClassCastExceptionError when calling .withIndex() on Iterator over Array
KT-41758 Deprecate kotlin.Metadata.bytecodeVersion and avoid using it in the compiler
KT-41770 AssertionError: "Asm parameter types should be the same length as Kotlin parameter types" cause by fun interface
KT-41874 "IllegalStateException: Couldn't obtain compiled function body" on extension delegated property with inline operator getValue in a different file
KT-41917 [FIR] Incorrect calculating property type for override from intersection scope
KT-42012 IllegalAccess to protected field instead of getter
KT-42017 "AssertionError: Unsigned type expected: UInt?" during codegen when a variable of nullable unsigned type is checking for presence in the range
KT-42032 "AnalyzerException: Expected I, but found R" while using Flow.reduce() with suspend function reference
KT-42034 ArrayIndexOutOfBoundsException in PopBackwardPropagationTransformer on external override of function in inline class
KT-42064 "Parameter specified as non-null is null" with default value of the parameter in operator fun
KT-42069 JVM IR: -Xreport-output-files doesn't report any source files for META-INF/*.kotlin_module files
KT-42083 AbstractMethodError when 'remove' with irrelevant generic parameter but matching JVM signature is present in Kotlin collection class
KT-42092 JVM / IR: "AnalyzerException: Argument 1: expected R, but found J" when trying to add to ArrayList the result of a function applied to int
KT-42175 Psi2ir: "AssertionError: Undefined parameter referenced: " on augmented assignment on this in a BuilderInference lambda
KT-42179 Platform declaration clash when extending abstract Java class implementing 'java.util.Collection' by abstract Kotlin class implementing Kotlin Set or List
KT-42321 JVM IR: do not cast integer value based on the type of a literal receiver of an operator call
KT-42337 NoSuchMethodError in JVM backend with inheritance of private functions in the interface
KT-42404 "Supertypes of the following classes cannot be resolved" in Rider project
KT-42472 No TYPE_INFERENCE_UPPER_BOUND_VIOLATED for Delegated Properties do not check types (in Kotlin 1.4.10)
KT-42487 "IndexOutOfBoundsException: Cannot pop operand off an empty stack" caused by USELESS_IS_CHECK of Double type
KT-42533 (N until MIN_VALUE).reversed() should be an empty progression in for loops
KT-42588 "IllegalStateException: Concrete fake override public open fun" caused by val override with var with delegation.
KT-42634 Different bridges and abstract stubs behavior in abstract class implementing Map<K, String> in JVM and JVM_IR
KT-42635 ClassCastException with inline class in for loop
KT-42662 AbstractMethodError when using partially specialized generic Map class
KT-42694 @get:Synchronized causes the JVM getter method not to be generated
KT-42753 "VerifyError: Bad invokespecial instruction: interface method reference is in an indirect superinterface" with jvm-default=all
KT-42879 JVM: Declaration clash in fun interface implementation returning an inline class
KT-42900 "VerifyError: Bad return type" incorrect bytecode when a property and an extension property in inline class have the same names
KT-42946 FIR2IR: Fix super-calls to Java overrides of special built-in
KT-42971 JVM: "AssertionError: Unsigned type expected: T" with UInt loop range
KT-42990 "AssertionError: Next value after NEW should be one generated by DUP" caused by extension properties with accessors annotataed as @JvmStatic
KT-43034 AssertionError: Compiler fails with complicated tailrec + inline case
KT-43048 JVM_IR: Implement coroutines state clearing
KT-43050 JVM IR: incorrect mangling for method with type parameter with inline class bound in the signature
KT-43059 Different bridges behavior in class implementing Map<String, String> in JVM and JVM_IR
KT-43063 Redundant DefaultImpls delegate is generated in old JVM backend on explicit "duplicate" inheritance from interface
KT-43069 JVM: incorrect generic signature for method with implicit return type Nothing overriding a method from Collection
KT-43099 Tailrec call in not tail-call position leads to internal compiler error
KT-43106 JVM: custom remove in Iterator subclass results in a synthetic bridge
KT-43120 JVM: "Expected an object reference, but found ." caused by function which is passed as reference to suspend parameter
KT-43167 JVM IR, serialization: "No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" with data class containing property defined in body
KT-43255 Verify error when inheriting from an abstract class implementing Collection with stub-like method in superclass
KT-43303 NI: False negative TYPE_INFERENCE_UPPER_BOUND_VIOLATED when inferred type argument is not a subtype of type parameter upper bound
KT-43333 AbstractMethodError when calling 'toArray' from Java on a Kotlin Collection with custom internal 'toArray'
KT-43334 AbstractMethodError when calling 'remove' from Java on a Kotlin Collection with custom internal 'remove'
KT-43342 [FIR2IR] No getter or backing field found for delegated member call
KT-43347 [FIR] Synthetic setter with unmatched parameter type isn't found
KT-43401 JVM_IR. Additional synchronized flag on JvmOverloads-generated adapter for Synchronized function
KT-43405 Turkish locale, Linux Mint: "NoSuchMethodError: 'int[] kotlin.jvm.internal.Intrinsics$Kotlin.intArrayOf(int[])'" with intArrayOf function call
KT-43460 JVM: redundant private setter is generated in case of multifile facade
KT-43473 "VerifyError: Bad type on operand stack" caused by operator get with optional argument in superclass when called via square brackets on subclass
KT-43518 JVM_IR. Additional strictfp flag on JvmOverloads-generated adapter for Strictfp function
KT-43569 FIR: inapplicable candidate(s): kotlin/collections/set
KT-43616 [FIR] Nullable type parameter-based type after merge in if
KT-43669 FIR: No real overrides for FUN IR_EXTERNAL_DECLARATION_STUB
KT-43682 Inline extension method of a multifile library inline class not found
KT-43687 FIR: UnusedChecker does not take annotation arguments into account
KT-43688 FIR: unused checker doesn't handle invokes properly
KT-43749 "UnsupportedOperationException: Don't know how to generate outer expression: Closure" caused by Flow and collect method with function reference as a parameter
KT-43812 JVM IR: SAM wrapper class with generic supertype mentions missing type parameter in the signature
KT-43832 JVM IR: missing bridges for inheritance of class from interface in a complex generic diamond hierarchy
KT-43851 JVM IR: function call returning object instance is removed during constant propagation
KT-43864 JVM: "Assertion error after mandatory stack transformations: incorrect bytecode" with lateinit property of type T, which has a primitive type upperbound
KT-43887 Problem with FunctionReferenceLowering$FunctionReferenceBuilder in kotlin native
KT-43912 JVM internal error: Augment assignment and increment are not supported for local delegated properties and inline properties
KT-43915 Back-end (JVM) Internal error: wrong bytecode generated for default method
KT-43938 NSME when calling 'kotlin.Number' methods on instance of Java class extending Kolin abstract class extending 'kotlin.Number'
KT-43942 org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate function
KT-43949 FIR: unresolved callable reference as lambda return
KT-43983 IllegalStateException: "Couldn't obtain compiled function body for public final suspend inline fun" after moving inline extension function to library
KT-43984 FIR: recursion in overridden symbols
KT-43984 FIR: recursion in overridden symbols
KT-44010 FIR: Inapplicable constructor due to an unresolved reference
KT-44030 FIR2IR: uncached type parameters in delegated property
KT-44032 FIR2IR: uncached type parameters in Java field
KT-44050 FIR: anonymous object as IR parent
KT-44054 FIR2IR: incorrect IR origin for substituted override function
KT-44058 CompilationException: open suspend fun with @JvmStatic in open class companion
KT-44069 please remove deprecated usages
KT-44066 FIR Java: override ambiguity with vararg value type
KT-44114 CompilationException when inlining a extension suspend function declared in interface companion with 'this' reference to extension receiver
KT-44131 "UnsupportedOperationException: Don't know how to generate outer expression: Closure" when using suspend lambda and a function reference
KT-44140 JVM IR: compilation of kotlin.Result crashes with IOOBE while generating toString-impl
KT-44141 JVM IR: "ISE: There should be underlying type for inline class type" on usage of type parameter with Result upper bound inside a lambda
KT-44192 Allow a greater number of constants in an enum class
KT-44202 "ClassCastException" when getting delegated property with inline class and Any/Any? type
KT-44210 KJS / IR: "AssertionError: Undefined parameter referenced: defined" caused by plus assign operators in build blocks
KT-44233 [IR] Collection Stub generation not correctly considering java.util Collection iterators
KT-44234 Private companion property with explicit setter generates invalid bytecode
KT-44269 "[TAILREC_ON_VIRTUAL_MEMBER_ERROR] Tailrec is not allowed on open members" with Spring annotation and private tailrec function
KT-44284 Make Kotlin binaries publicly unavailable (set KotlinCompilerVersion.IS_PRE_RELEASE = true)
KT-44316 ReenteringLazyValueComputationException when analyzing complex lazy delegate
KT-44347 Back-end (JVM) Internal error: Couldn't transform method node for suspend function with wrong local for Continuation
KT-44368 "IllegalStateException: Error type encountered" when inlining 'invoke' operator without enough information on type variable
KT-44412 JVM IR backend fails to compile break in condition of do while
KT-44420 False NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATION with 1.4.30-RC
KT-44429 JVM IR: unnecessary integer unboxing leads to NPE when using mockito-kotlin
KT-44439 Type inference of generic types failing java interop
KT-44440 Too many Nothings in inferred type
KT-44471 Fix failing script tests after switching to 1.5
KT-44474 Compiler expects sealed type inheritors from platform specific source-sets in when expression in common source-set
KT-44483 JVM IR: CCE on calling generic vararg function reference with Array expected type
KT-44527 Suspend function with kotlin.Result: ClassCastException class kotlin.Result cannot be cast to class ...
KT-44529 Inline class calls wrong iterator method in for loop
KT-44533 JVM IR: ClassFormatError on synthetic $suspendImpl method generated in interface for a @JvmDefault function
KT-44540 Regression in 1.4.30 in intellij-community: type mismatch for generic function call with generic Java class
KT-44546 NI: changed variable fixation order (that can lead to changed resolution)
KT-44550 KotlinBinaryClassCache leaks Kotlin plugin classloader on plugin unload
KT-44563 Type Inference loosing type annotations in lambda type expectation for function calls with block parameters
KT-44583 "Supertypes of the following classes cannot be resolved" error message gives no context
KT-44627 JVM IR: ACCIDENTAL_OVERRIDE when overriding a generic field where the type parameter has a primitive bound
KT-44631 "IndexOutOfBoundsException: Cannot pop operand off an empty stack" caused by a default param in inner class constructor which uses method or field from receiver
KT-44647 "IllegalAccessError: class TestKt tried to access private method" with String Builder get and inc operator
KT-44651 JVM / IR: "IllegalStateException: Illegal type substitutor" with if-else inside class constructor argument inside another if-else
KT-44660 Internal inline functions in companion object with inline class return type fails compilation
KT-44671 JVM_IR: ClassCastException: Result$Failure cannot be cast to Result with multithreaded coroutines
KT-44703 JVM / IR: "IllegalStateException: Unhandled special name in mangledNameFor" caused by a reference to inline class inside interface's companion with lazy initialization
KT-44712 JVM / IR: Behavior change after enabling with Mockito
KT-44714 Debugger / Coroutines: Local variables are trimmed out too aggressively
KT-44722 JVM IR: ClassCastException with inline class, let and bound function reference
KT-44726 JVM IR: Incorrect KType nullability for platform type reified as non-null
KT-44781 JVM IR: java.lang.NoSuchFieldError: $noName_0 when calling a crossinline lambda within a suspending lambda
KT-44798 JVM IR: Inherited platform declarations clash for class implementing both List and Set
KT-44801 1.4.30 JVM IR: Unbound symbols not allowed with anonymous object
KT-44803 FIR bootstrap: incorrect nullability is set for type alias-based type
KT-44827 Non-existing outer class is written in anonymous class for SAM wrapper in inline lambda with capture
KT-44837 JVM / IR: ClassCastException with Result object when it is used by a generic method in a suspend call
KT-44875 JVM_IR. hashCode call is generated on interface target in fun interface equality
KT-44878 JVM_IR: "IllegalStateException: Unexpected types" when checking non-nullable variable is in range between nullable ones with smart-cast
KT-44926 MPP: Actual typealias to compiled inline class incompatible with expect inline class
KT-44947 Sealed interfaces: Sealed fun interface leads to "NoWhenBranchMatchedException"
KT-44993 JVM IR: VerifyError on getfield with Kotlin generic field and elvis operator
KT-45008 JVM IR: hashCode is generated as invokeinterface if smart cast to interface is present
KT-45011 JVM / IR: "AssertionError: Unbound symbols not allowed"
KT-45022 IR: "AssertionError: Undefined variable referenced" from psi2ir caused by plusAssign operator of object
KT-45064 JVM IR: "java.lang.AssertionError: SyntheticAccessorLowering should not attempt to modify other files!" with member reference to property in another file with private setter
KT-45067 "IllegalArgumentException: Wildcard mast have a bound for annotation of WILDCARD_BOUND position" with BEAM SDK 2.27
KT-45069 JVM / IR: New SAM conversions mode fails when converting from Unit to Any
KT-45131 JVM / IR: "RuntimeException: Lambda, SAM or anonymous object should have only one constructor" caused by inline class that type cast to reified type parameter inside lambda in inline function
KT-45139 Inline class: AssertionError: Expected top level inline class
KT-45166 JVM / IR: "AbstractMethodError: Receiver class does not define or inherit an implementation of the resolved method of interface" caused by interface with suspend function
KT-45187 JVM / IR: ClassCastException caused by substituting generic type of vararg parameter with java.lang.Void
KT-45195 JVM IR: annotation methods are generated as default interface methods if allopen is used
KT-45243 "IllegalStateException: Lambdas shouldn't be visited by ESExpressionVisitor" caused by lambda inside kotlin.test.assertNotNull
KT-45259 JVM: ClassCastException caused by Result as lambda parameter type
KT-45292 AssertionError with recursive inline extension property
KT-45300 Deprecate super calls in public-api inline functions
KT-45409 Rename jspecify annotations’ package and default not null annotation
KT-45446 JVM / IR: NullPointerException caused by unreachable code and comparison
KT-45721 JVM / IR: "Unbound symbols not allowed" caused by class reference in sequence lambda
KT-45853 JVM / IR: "Accidental override" caused by inheriting Throwable.getCause from Java interface
KT-45861 Turning warnings into errors for calls with type parameters annotated by @OnlyInputTypes
KT-45865 JVM IR: "VerifyError: Bad type on operand stack" with enumValueOf on a value from a list of strings
KT-45868 JVM IR: ClassCastException with SAM function in init block when SAM is generated via invokedynamic
KT-45920 JVM IR: "Accidental override" on redefining get() in custom Map class
KT-45934 JVM IR: "java.lang.IllegalStateException: Function has no body" for class implementing interface by delegation
KT-45945 JVM / IR: "AssertionError: Unexpected variance in super type argument" with contravariance and intersection types
KT-45963 JVM / IR: "AbstractMethodError: Receiver class does not define or inherit an implementation of the resolved method" in Dokka tests
KT-45967 JVM IR: "IllegalAccessError" with invokedynamic to Java SAM over callable reference to private function
KT-45982 Wrong subtyping result on captured types with postponed type variables
KT-46007 JVM / IR: "ClassCastException: kotlin.Unit cannot be cast to java.lang.String" caused by default suspend function in interface
KT-46060 JVM IR: NullPointerException from RangeContainsLowering when contains is a @JvmStatic function in object
KT-46069 JVM IR: unbound type parameter on generic bound adapted function reference
KT-46092 JVM IR: AssertionError "Array type expected: @[FlexibleNullability] kotlin.CharArray?" on super call to Java constructor with primitive vararg
KT-46104 The message on inline -> value class migration should not say that inline classes are deprecated
KT-46131 Kotlin 1.5.0-RC errors when reading class file
KT-46160 JVM IR: IllegalAccessException at runtime for member reference to JvmMultifileClass member from stdlib
KT-46186 Type inference regression in Kotlin 1.5 with constrained generic return types

Docs & Examples

KT-45884 Incorrect description for JVM toUpperCase method

IDE

KT-33233 Use dependency of library to build built-ins in IDE, instead of loading them from the current classloader
KT-34023 kotlin.KotlinNullPointerException at org.jetbrains.kotlin.backend.common.FunctionsFromAnyGenerator.getPrimaryConstructorProperties(FunctionsFromAnyGenerator.kt:66)
KT-35947 KFunctionN.call is unresolved in IDE in Kotlin/JVM project
KT-37702 Code analysis speed: on-the-fly analysis diagnostics reporting
KT-41048 [FIR-IDE] Properly implement methods in KtFirPackageScope
KT-41671 Missing nullability information in properties using type inference from get()
KT-43824 KtLightClassForSourceDeclaration#isInheritor works in a different way than java implementation
KT-44128 IDE: Kotlin JVM record has incorrect property accessors as seen from Java
KT-44487 MPP, IDE: No error in IDE when sealed class inheritor from common source-set is not used in exhaustive when expression in platform source-set
KT-45254 Highlighting for files with certain errors appears only on second opening
KT-46097 Light classes: Incomplete nullability information for a getter method of a kotlin property defined in private constructor

IDE. Decompiler, Indexing, Stubs

KT-43699 IDE: Unresolved extension method from Java code for simple class with typealias and generics (IllegalStateException: Unknown type parameter)
KT-44756 Infinite "UpToDateStubIndexMismatch: PSI and index do not match." with IDEA 2021.1 EAP upon attempt to open "org.gradle.configurationcache" even they seem to be the same

IDE. Gradle Integration

KT-37127 Implement precise importing of platforms of root source sets (commonMain/commonTest) when hierarchical multiplatform support is enabled
KT-42048 KJS / Gradle integration: Could not determine the dependencies of task ':webApp:testPackageJson' in Android Studio 4.2 Canary 11

IDE. Gradle. Script

KT-46215 Dead lock on closing project during the import in IJ211 through ScriptDefinitionsManager

IDE. Inspections and Intentions

KT-23824 Return lifted out of if condition causes suspend tail call optimization to no longer apply
KT-38155 Lift assignment out of 'if' produces type mismatch without manually adding a semicolon
KT-44821 IDE: False positive NO_ELSE_IN_WHEN caused by sealed class and when in another module
KT-46088 [IDEA] Incorrect behavior of replace inline class with value class intention

IDE. Misc

KT-44675 Incorrect reference to resource into 202 plugin

IDE. Refactorings

KT-44079 Sealed Interfaces: Move refactoring should warn about violation of hierarchy restrictions
KT-44839 Sealed interfaces: move refactoring warnings works with "more freedom for sealed classes" rules for language level < 1.5

IDE. Script

KT-43288 Allow push notifications about script configuration /dependencies changes via the ScriptDefinitionsProvider EP

JavaScript

KT-39272 KJS / IR: Can't use javascript keywords as JsName
KT-41650 JS IR BE: default should be a reserved identifier
KT-42176 KJS / IR: Interface default method in sub-interface not resolved correctly from extension on super-interface
KT-44103 [JSIR] TypeError when bumping from 1.4.20 to 1.4.30-M1
KT-44180 KJS / IR: NPE in ConstTransformer of compileDevelopmentExecutableKotlinJs/compileProductionExecutableKotlinJs tasks
KT-44415 Kotlin/JS with IR and kotlin-react: "too much recursion" error in runtime in browser
KT-44433 KJS IR: support function interfaces with suspend member
KT-44469 KJS / IR: Incorrect export functions with bridges
KT-44718 MPP/ KJS: "IllegalStateException: Unsupported operation" with serialization plugin and incremental compilation
KT-44796 KJS / IR: default parameter of function with @JsName leads to "RangeError: Maximum call stack size exceeded"
KT-45059 KJS / IR: Add possibility for runtime diagnostics of DCE result

Libraries

KT-12109 Add stdlib method that combines mapNotNull() and first/firstOrNull()
KT-25571 Make random implementations serializable
KT-26234 Floored division and remainder function for numeric types
KT-32996 kotlin.test: add assertContentEquals for comparing content of arrays, iterables, sequences
KT-39177 Make CharCategory available in common multiplatform code
KT-40225 Support adding kotlin-test as a single dependency, as it should be with a multiplatform library
KT-42071 Strict version of String.toBoolean()
KT-42720 Kotlin ArrayDeque on JVM: provide optimized toArray method
KT-42840 Commonize and generalize String.contentEquals that is currently JVM-only
KT-43772 Kotlin/Native unfinished workers detected.
KT-44168 Prevent storing NaN and negative zero in kotlin.time.Duration
KT-44369 Commonize Char.titlecaseChar() and Char.titlecase() that are currently JVM-only
KT-44783 Add IS_VALUE flag for value classes to kotlinx-metadata-jvm
KT-44815 Remove kotlin-annotations-android and JVM compiler support for @ParameterName/@DefaultValue/@DefaultNull
KT-45213 Update Unicode version used in K/N for Char and String case conversion functions

Middle-end. IR

KT-43831 Compilation failed, IrSimpleFunctionPublicSymbolImpl is already bound
KT-44100 KJS / IR: Top level declarations added in IR plugin are not referenceable from other modules
KT-45170 IR: "AssertionError: Single expression value for GET_OBJECT" caused by inc operator of field inside scope function inside object

Native

KT-42446 Native: SIGSEGV in Kotlin_Array_get on linuxArm64
KT-43502 [K/N] relocation R_X86_64_PC32 cannot be used against symbol __environ; recompile with -fPIC
KT-44295 1.4.21 Kotlin native ndk compiler crash
KT-44774 ld fails with CALL16 reloc at 0x48f00 not against global symbol (Linux MIPS)
KT-44746 Different hashCode() results for Kotlin/Native stdlib

Native. C and ObjC Import

KT-44824 cinterop tool no longer appends .klib to produced klibs

Native. C Export

KT-36639 MPP: Build ios "staticLib" or "sharedLib" binary failed if interface contains member extension function
KT-41725 Dynamic library doesn't load on raspberrypi

Native. ObjC Export

KT-44549 In the Xcode debug session, call stack is missing a frame when the iOS app fails

Native. Platforms

KT-45094 Fail to compile Kotlin Native sources under Oracle Linux 7

Reflection

KT-44594 Avoid using unnecessary array types reflection in kotlin-reflect
KT-44782 Add KClass.isValue to kotlin-reflect

Tools. Ant

KT-16227 Ant task: do not include runtime by default if destination is a jar
KT-44293 Support fork mode in kotlinc Ant task

Tools. CLI

KT-17344 Include kotlin-reflect to resulting jar if "-include-runtime" is specified
KT-43220 -include-runtime should add .kotlin_builtins to the output
KT-43704 Illegal reflective access by com.intellij.util.ReflectionUtil to method java.util.ResourceBundle.setParent(java.util.ResourceBundle)
KT-44078 Do not include module-info.class of kotlin-stdlib.jar to the resulting jar with -include-runtime
KT-44232 CLI: do not pass -noverify to java process starting from JDK 13
KT-45566 JDK 16 - e: java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.com.intellij.pom.java.LanguageLevel

Tools. CLI. Native

KT-43874 Native / CLI: provide a way to show difference between Jvm and Native compilers

Tools. Compiler Plugins

KT-45783 Serialization: "AnalyzerException: Expected an object reference, but found I" caused by JvmInline and Serializable annotations

Tools. Gradle

KT-31027 java.lang.NoSuchMethodError: No static method hashCode(Z)I in class Ljava/lang/Boolean; or its super classes (declaration of 'java.lang.Boolean' appears in /system/framework/core-libart.jar)
KT-43605 Kotlin Gradle Plugin 1.4.20 undeclared system property reads cause problems with Gradle configuration cache enabled
KT-44204 Kotlin Gradle Plugin 1.4.21 makes impossible to use ANTLR in other plugins
KT-44361 Gradle: deprecate options includeRuntime, noStdlib, noReflect
KT-44462 Kotlin Gradle plugin creates compile configuration with Gradle 7.0
KT-44834 Gradle Kotlin DSL: Add languageSettings configuration lambda without apply call
KT-44949 Compatibility with Gradle 7.0
KT-44957 gradle - target.compilations seems to be deprecated
KT-45340 Update minimal supported version of Kotlin Gradle Plugin to 6.1

Tools. Gradle. JS

KT-43237 KJS: -jsLegacy Naming Convention is incompatible with NPM
KT-43869 Error in webpack configuration not displayed
KT-44614 Update Node.JS and Yarn versions
KT-44616 Kotlin/JS: IR backend with React: "Uncaught TypeError: _this__0 is undefined" runtime error in browser
KT-45574 Sync Kotlin/JS compile tasks into one folder (build/js/packages//kotlin)

Tools. Gradle. Multiplatform

KT-42098 Commonizer is re-launched for every included Gradle build
KT-43116 Merge together MultiplatformHighlightingTest and MultiplatformAnalysisTest
KT-44322 KotlinTargetComponent maintenance for -sources.jar
KT-44900 Support gradle configuration cache with kotlin.multiplatform plugin

Tools. Gradle. Native

KT-46122 kotlinx-serialization and kotlinx-datetime can't be built with 1.5.0-RC

Tools. JPS

KT-13631 Compilation fails on Turkish locale because of locale-sensitive uppercasing
KT-44644 Mark all @JvmMultifileClass parts compiled in the previous round as dirty in the JPS plugin, similarly to how it’s done in the Gradle plugin

Tools. Scripts

KT-45194 KT: Generate Kotlin Entities script: it doesn't work
KT-44580 Scripts: Unable to set new file annotation hooks after first snippet compilation

Tools. kapt

KT-43686 KaptWithoutKotlincTask should use @CompileClasspath for kotlinStdlibClasspath for cache relocateability.
KT-44130 KAPT changes field order in 1.4.30-M1
KT-44909 Kapt: ReenteringLazyValueComputationException without stacktrace caused by when expression with sealed class function without explicit return type
KT-45168 KAPT: Java stubs generated for Kotlin files generated by annotation processors

Files

ChangeLog.md

Latest commit

History

ChangeLog.md

File metadata and controls

CHANGELOG

1.5.21

Compiler

Tools. Compiler Plugins

Tools. Gradle

Tools. kapt

1.5.20

Compiler

New Features

Performance Improvements

Fixes

Docs & Examples

IDE

IDE. FIR

IDE. Gradle Integration

IDE. Inspections and Intentions

IDE. Refactorings

IDE. Native

JavaScript

KMM Plugin

Libraries

Native

Native. C Export

Native. ObjC Export

Native. Runtime. Memory

Reflection

Tools. CLI

Tools. Commonizer

Tools. Compiler Plugins

Tools. Gradle

Tools. Gradle. JS

Tools. Gradle. Multiplatform

Tools. Gradle. Native

Tools. Incremental Compile

Tools. JPS

Tools. kapt

Performance Improvements

Fixes

1.5.10

Compiler

Fixes

IDE

IDE. Gradle Integration

Libraries

Middle-end. IR

Tools. Android Extensions

Tools. Gradle

Tools. Gradle. JS

Tools. Parcelize

Tools. kapt

1.5.0

Backend. Native

Backend. IR

Compiler

New Features

Performance Improvements

Fixes

Docs & Examples

IDE

IDE. Decompiler, Indexing, Stubs

IDE. Gradle Integration

IDE. Gradle. Script

IDE. Inspections and Intentions

IDE. Misc

IDE. Refactorings

IDE. Script

JavaScript

Libraries

Middle-end. IR

Native

Native. C and ObjC Import

Native. C Export

Native. ObjC Export

Native. Platforms