Changelog

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

Checksums

File	Sha256
kotlin-compiler-1.5.20-RC.zip	3537d9e9c57f4afc4e8359f695da98f631319464ba1330c70b1b4aca5d30b84e
kotlin-native-linux-1.5.20-RC.tar.gz	d84ea3f3187aaeb21cceb5402cc74951a7a737799ce68a701f58b76e5ef534a0
kotlin-native-macos-1.5.20-RC.tar.gz	b97b9cadb3791905dc15c090f3981dcb8a6eb4d31cf3721763070e12009d4b8e
kotlin-native-windows-1.5.20-RC.zip	c4ba183f211652881434ce4b41bde87b626d319134f5163bb8c295c186f3e1d5

Changelog

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<T>.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

Checksums

File	Sha256
kotlin-compiler-1.5.20-M1.zip	b50394e669651024025c23c53779c75f68d4fc9ab7bfecd58ea5e2c9eda5a390
kotlin-native-linux-1.5.20-M1.tar.gz	ef9fb39d2c4bdba16a9ca0849abb26cb6384f444464505087b4a8ebde6ed6103
kotlin-native-macos-1.5.20-M1.tar.gz	84d6f412eaec3b61929310cf45dfff7e230d6d676ffea14014aa99cbd6668222
kotlin-native-windows-1.5.20-M1.zip	b9c86df611a63b513f3a327da740007a018012639b6a64b50439fd186bda87bf

How to update to a new release

Changelog

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<Int>
• 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

Checksums

File	Sha256
kotlin-compiler-1.5.10.zip	2f8de1d73b816354055ff6a4b974b711c11ad55a68b948ed30b38155706b3c4e
kotlin-native-linux-1.5.10.tar.gz	0463222fb84e0f997e3c71af89ed1d1c4b3b9894cafffe5fc0ba1f125cf362ea
kotlin-native-macos-1.5.10.tar.gz	bc227baad4a4c8b5cdf0b1a08fa3fb59132043f2ea88e2343c5f25584f5de3cd
kotlin-native-windows-1.5.10.zip	e0816d91da9c4c38b3ef8891033185cb183f4a901054c9f17a9c72295ed40324

Changelog

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 <no name provided> 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 <init> 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: <init> 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<Foo>
• 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: <init> 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 <class name>' 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: <this>" 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: <this> 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/<package>/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

Checksums

File	Sha256
kotlin-compiler-1.5.0.zip	0343fc1f628fec1beccc9e534d2b8b7a0f8964b97e21563585d44d6d928ed1b7
kotlin-native-linux-1.5.0.tar.gz	33241c460fab8c496a6b01ca08670ae7f667df23acc56081f8b37c50b021b50f
kotlin-native-macos-1.5.0.tar.gz	246cacdc4791067f4d99d0baf3d58aecfd2c43b54bf9a84f463c1d782c9718b5
kotlin-native-windows-1.5.0.zip	5755391536bcac49c7ef87e0788e595d38776af534eb08cc5ab8879e9f1a855d

Changelog

Compiler

New Features

• KT-28791 Kotlin serialization with inline classes
• KT-43920 Support loading binary Java annotations on fields

Performance Improvements

• 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-35224 It's possible to pass non-spread arrays after arguments with SAM-conversion
• KT-36853 IR: UninitializedPropertyAccessException on tailrec with object expression in default argument
• KT-41056 Increase stub version due to new "contract" keyword
• KT-43887 Problem with FunctionReferenceLowering$FunctionReferenceBuilder in kotlin native
• KT-44210 KJS / IR: "AssertionError: Undefined parameter referenced: <this> defined" caused by plus assign operators in build blocks
• 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-45139 Inline class: AssertionError: Expected top level inline class
• KT-45195 JVM IR: annotation methods are generated as default interface methods if allopen is used
• 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-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-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

IDE. Inspections and Intentions

• KT-38155 Lift assignment out of 'if' produces type mismatch without manually adding a semicolon

JavaScript

• KT-44796 KJS / IR: default parameter of function with @JsName leads to "RangeError: Maximum call stack size exceeded"

Libraries

• KT-39177 Make CharCategory available in common multiplatform code
• KT-43772 Kotlin/Native unfinished workers detected.

Tools. Gradle

• KT-43605 Kotlin Gradle Plugin 1.4.20 undeclared system property reads cause problems with Gradle configuration cache enabled
• KT-44462 Kotlin Gradle plugin creates compile configuration with Gradle 7.0
• 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. Multiplatform

• KT-44900 Support gradle configuration cache with kotlin.multiplatform plugin

Tools. kapt

• KT-43686 KaptWithoutKotlincTask should use @CompileClasspath for kotlinStdlibClasspath for cache relocateability.
• KT-44130 KAPT changes field order in 1.4.30-M1

Checksums

File	Sha256
kotlin-compiler-1.5.0-RC.zip	91a82ea9ff1b49ef1c342d52b3fe54fed92aa79201ee0d452fe9b72e698ea98b
kotlin-native-linux-1.5.0-RC.tar.gz	6336cf1d360bd62adfffb4442a31e06150721cc767c76eca2830e9e45eed9bbc
kotlin-native-macos-1.5.0-RC.tar.gz	2d868b738b77ca290ea4c714669e31ed29f3befbb71aa0d0b4b0ad1ebddf1a9d
kotlin-native-windows-1.5.0-RC.zip	dd3c6bec6aa1b50e1764484406d450d4ae491169a47add5e2174e82de73e567d

Changelog

Compiler

New Features

• KT-30222 Support JVM target version selection in Kotlin bytecode tool window
• KT-41884 Support 'file' target for JvmSynthetic annotation
• KT-44278 Generate SAM-converted lambdas and function references using 'invokedynamic' on JDK 1.8+

Performance Improvements

• KT-26060 Support a compiler mode to compile lambda expressions using invokedynamic instruction
• KT-42621 Kotlin binary size considerably larger for code extensively using stream API

Fixes

• KT-20306 Make 'when' over an 'expect' enum class non-exhaustive
• KT-20869 kotlin.jvm.internal.DefaultConstructorMarker should be public
• KT-26592 Do not generate private suspend functions as synthetic package-private
• KT-38100 Support local delegated properties (not inlined) in new JVM default modes
• KT-40392 Deprecate JvmDefault annotation and old -Xjvm-default modes
• KT-41758 Deprecate kotlin.Metadata.bytecodeVersion and avoid using it in the compiler
• 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-42321 JVM IR: do not cast integer value based on the type of a literal receiver of an operator call
• 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-43167 JVM IR, serialization: "No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" with data class containing property defined in body
• KT-43303 NI: False negative TYPE_INFERENCE_UPPER_BOUND_VIOLATED when inferred type argument is not a subtype of type parameter upper bound
• 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-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-44550 KotlinBinaryClassCache leaks Kotlin plugin classloader on plugin unload
• KT-44546 NI: changed variable fixation order (that can lead to changed resolution)
• 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-44703 JVM / IR: "IllegalStateException: Unhandled special name in mangledNameFor" caused by a reference to inline class inside interface's companion with lazy initialization
• 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-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-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-44974 LambdaConversionException in case of SAM-converted captuing extension lambda
• 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-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-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

IDE

• 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

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

IDE. Misc

• KT-44675 Incorrect reference to resource into 202 plugin

IDE. Refactorings

• 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-44433 KJS IR: support function interfaces with suspend member
• 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-26234 Floored division and remainder function for numeric types
• KT-32996 kotlin.test: add assertContentEquals for comparing content of arrays, iterables, sequences
• 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-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-45170 IR: "AssertionError: Single expression value for GET_OBJECT" caused by inc operator of field inside scope function inside object

Native

• 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)

Native. C and ObjC Import

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

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. CLI

• KT-45566 JDK 16 - e: java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.com.intellij.pom.java.LanguageLevel

Tools. Gradle

• KT-44361 Gradle: deprecate options includeRuntime, noStdlib, noReflect
• KT-44834 Gradle Kotlin DSL: Add languageSettings configuration lambda without apply call

Tools. Gradle. JS

• KT-45574 Sync Kotlin/JS compile tasks into one folder (build/js/packages/<package>/kotlin)

Tools. JPS

• 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-45168 KAPT: Java stubs generated for Kotlin files generated by annotation processors

Checksums

File	Sha256
kotlin-compiler-1.5.0-M2.zip	a94d8b05c89faa4765a0471dc52adb69db37193d351d10758529f54289a354dd
kotlin-native-linux-1.5.0-M2.tar.gz	9715e653ca5f2c4a48af83765bd3c2adb4f3acae48c94fc90db7f96aa83bf1c2
kotlin-native-macos-1.5.0-M2.tar.gz	5fb4211b5fa872cd8d569c4f45ecd2bf0b0ec4162ed09fef50bb95347563ab7d
kotlin-native-windows-1.5.0-M2.zip	49851d0e24afa14214697be7cf12560717373e67e62ecdc3439c1be816bf2fc3

You could find information about EAP program and setup instructions here

Changelog

Backend. Native

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

Compiler

New Features

• KT-42522 Enable string concatenation via invokedynamic by default for JVM target 9 and above
• KT-43677 Support for Java records
• 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-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

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-20996 IllegalStateException: Cannot get FQ name of local class: class <no name provided> 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-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 <init> 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-35301 MethodInliner fails with "AssertionError: <init> 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<Foo>
• KT-36713 AnalyzerException: "Incompatible stack heights" with suspend and inline suspend functions
• KT-36794 Move $assertionsDisabled field to the top-level class
• 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: <init> 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-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-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-41105 IllegalStateException: 'Couldn't find declaration file <class name>' 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-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-42175 Psi2ir: "AssertionError: Undefined parameter referenced: <this>" 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-42337 NoSuchMethodError in JVM backend with inheritance of private functions in the interface
• 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-43255 Verify error when inheriting from an abstract class implementing Collection with stub-like method in superclass
• 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-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-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-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-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-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 $suspendImpl method generated in interface for a @JvmDefault function
• KT-44540 Regression in 1.4.30 in intellij-community: type mismatch for generic function call with generic Java class
• KT-44563 Type Inference loosing type annotations in lambda type expectation for function calls with block parameters
• KT-44631 "IndexOutOfBoundsException: Cannot pop operand off an empty stack" caused by a default param in inner class constructor which uses method or field from receiver
• KT-44647 "IllegalAccessError: class TestKt tried to access private method" with String Builder get and inc operator
• KT-44651 JVM / IR: "IllegalStateException: Illegal type substitutor" with if-else inside class constructor argument inside another if-else
• KT-44660 Internal inline functions in companion object with inline class return type fails compilation
• KT-44671 JVM_IR: ClassCastException: Result$Failure cannot be cast to Result with multithreaded coroutines
• KT-44712 JVM / IR: Behavior change after enabling with Mockito
• KT-44781 JVM IR: java.lang.NoSuchFieldError: $noName_0 when calling a crossinline lambda within a suspending lambda
• 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-45067 "IllegalArgumentException: Wildcard mast have a bound for annotation of WILDCARD_BOUND position" with BEAM SDK 2.27

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-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

IDE. Gradle Integration

• KT-42048 KJS / Gradle integration: Could not determine the dependencies of task ':webApp:testPackageJson' in Android Studio 4.2 Canary 11

IDE. Inspections and Intentions

• KT-23824 Return lifted out of if condition causes suspend tail call optimization to no longer apply
• KT-44821 IDE: False positive NO_ELSE_IN_WHEN caused by sealed class and when in another module

IDE. Refactorings

• KT-44079 Sealed Interfaces: Move refactoring should warn about violation of hierarchy restrictions

JavaScript

• 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-44469 KJS / IR: Incorrect export functions with bridges
• KT-44718 MPP/ KJS: "IllegalStateException: Unsupported operation" with serialization plugin and incremental compilation

Libraries

• KT-25571 Make random implementations serializable
• KT-40225 Support adding kotlin-test as a single dependency, as it should be with a multiplatform library
• KT-44168 Prevent storing NaN and negative zero in kotlin.time.Duration

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

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-44746 Different hashCode() results for Kotlin/Native stdlib

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

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

Tools. CLI. Native

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

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-44204 Kotlin Gradle Plugin 1.4.21 makes impossible to use ANTLR in other plugins

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

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

Tools. JPS

• KT-13631 Compilation fails on Turkish locale because of locale-sensitive uppercasing

Tools. kapt

• KT-44909 Kapt: ReenteringLazyValueComputationException without stacktrace caused by when expression with sealed class function without explicit return type

Checksums

File	Sha256
kotlin-compiler-1.5.0-M1.zip	5e2ca47ab39254152bb5e035c0ee9d570da56aa6da41c719172cfa92c07ccf9a
kotlin-native-linux-1.5.0-M1.tar.gz	5ceca3f825ee4e5b3ec31e69d46f69528f41a1897a4d6a87d78633f0fd9751cf
kotlin-native-macos-1.5.0-M1.tar.gz	c8394df34a4eb5aea9957e8f27187f15946368af68ca28c3260e94a5814d32ae
kotlin-native-windows-1.5.0-M1.zip	8ca7da28c02e95427db1a206bcd3e57808b9c66d50d3cef13c1f5ab894704288

Changelog

IDE

• KT-43824 KtLightClassForSourceDeclaration#isInheritor works in a different way than java implementation
• KT-45287 LightClasses: KtLightSimpleModifierList is no more a parent of KtLightAnnotationForSourceEntry
• KT-45291 LightClasses: can't get annotations for constructor val-parameter
• KT-45417 ULC leakage of primitive type annotations

Tools. CLI

• KT-44758 kotlin-compiler-embeddable dependency includes unshaded fastutil package
• KT-45007 Concurrent Kotlin script compilation/execution results in NullPointerException in KeyedExtensionCollector.getPoint()

Checksums

File	Sha256
kotlin-compiler-1.4.32.zip	dfef23bb86bd5f36166d4ec1267c8de53b3827c446d54e82322c6b6daad3594c
kotlin-native-linux-1.4.32.tar.gz	3712fab4c60484fd8b5538dd018a0023033cb3ea38d2a3023c79b342e4e8b24d
kotlin-native-macos-1.4.32.tar.gz	a55eb3c60bb9810360c5a992dca34328d806fe13f3bfc3120b49345f569fd3cc
kotlin-native-windows-1.4.32.zip	3bd6f1b9293897a45d0b33ee14ca51b33b57d0413b774458c6e4aee393e1b772

1.4.31

Compiler

• KT-39776 2020.3+: Unresolved reference to Kotlin stdlib function

IDE. Gradle Integration

• KT-44845 After update to Kotlin 1.4.30 all external dependencies is unresolved in IDE with kotlin.mpp.enableGranularSourceSetsMetadata=true

IDE. Gradle. Script

• KTIJ-11137 build.gradle.kts: Fatal error during save/load standalone scripts settings
• KTIJ-898 Unable to import with Kotlin DSL buildscript - NullPointerException in KotlinDslScriptModelProcessorKt.toListOfScriptModels

IDE. Multiplatform

• KTIJ-1200 KotlinIconProviderKt.addExpectActualMarker takes up to 180+ seconds

IDE

Fixes

• KT-44697 New JVM IR backend notification - narrow its triggering to Kotlin projects
• KT-44523 IDE notification for trying new JVM backend
• KTIJ-696 Freeze during startup of IDEA with intellij project with Kotlin (211-1.4.10-release-IJ1440)

Checksums

File	Sha256
kotlin-compiler-1.4.31.zip	b50e7016febf7510325d685ae69cc62f49a7ca7f670cb4e0888112e3ec09c6ec *
kotlin-native-linux-1.4.31.tar.gz	87fc40385ffbd44eebde6487d15e1c5c67c218870b332b525e122f014b7de3e3
kotlin-native-macos-1.4.31.tar.gz	0e351756b382096204d61456f855480ce6b65ac53897c4bfa78a287895f37e32
kotlin-native-windows-1.4.31.zip	a60aec97fd21294ab11e57acdd33d37d79db11b22656fa435b791e9a709727b4

* Sorry, Sha256 sum was initially published incorrectly. Now it is fixed.

CHANGELOG

Android

• KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid

Backend. Native

• KT-38772 Native: support non-reified type parameters in typeOf
• KT-42234 Move LLVM optimization parameters into konan.properties
• KT-42649 IndexOutOfBoundsException during InlineClassTransformer lowering
• KT-42942 Native: optimize peak backend memory by clearing BindingContext after psi2ir
• KT-43198 Native: support init blocks inside inline classes

Compiler

New Features

• KT-28055 Support init blocks inside inline classes
• KT-28056 Consider supporting non-public primary constructors for inline classes
• KT-41265 Support noarg compiler plugin for JVM IR
• KT-42094 Allow open callable members in expect interfaces
• KT-43129 FIR: Support OverloadResolutionByLambdaReturnType
• KT-43592 Promote JVM IR compiler backend to Beta
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-44021 Enable JVM IR backend by default in 1.5

Performance Improvements

• KT-41352 JVM IR: reduce bytecode size in for loops and range checks with 'until' by not using inclusive end
• KT-41644 NI: Infinite compilation
• KT-42791 OutOfMemoryError on compilation using kotlin 1.4 on a class with a lot of type inference
• KT-42920 NI: Improve performance around adding constraints

Fixes

• KT-11454 Load annotations on TYPE_USE/TYPE_PARAMETER positions from Java class-files
• KT-11732 Verify error for generic interface method invocation with default parameters
• KT-14612 "ISE: Recursive call in a lazy value" during processing of a (weakly) recursive type alias
• KT-18344 Upper bound of a typealias type parameter is not reported correctly if it contains the typealias itself
• KT-18768 @Notnull annotation from Java does not work with varargs
• KT-20548 java.lang.IllegalStateException: Illegal class container on simple Java code parsing
• KT-22465 Excessive synthetic method for private setter from superclass
• KT-23816 Inline classes: constants and annotations
• KT-24158 AE: No receiver found on incomplete code with $-signs
• KT-24392 Nullability of Java arrays is read incorrectly if @Nullable annotation has both targets TYPE_USE and VALUE_PARAMETER
• KT-26229 Lambda/anonymous function argument in parentheses is not supported for callsInPlace effect
• KT-29735 KNPE at KtEnumEntrySuperclassReferenceExpression.getReferencedElement with explicit type argument inside enum member constructor
• KT-31389 ClassFormatError with companion object in annotation with @JvmStatic
• KT-31907 ISE: UNIT_EXPECTED_TYPE on parsing array literal inside lambda with Unit return type
• KT-32228 Inconsistent boxing/unboxing for inline classes when interface is specialized by object expression
• KT-32450 Inline class incorrectly gets re-wrapped when provided to a function
• KT-35849 Missing nullability assertion on lambda return value if expected type has generic return value type
• KT-35902 Kotlin generates a private parameterless constructor for constructors taking inline class arguments with default values
• KT-36399 Gradually support TYPE_USE nullability annotations read from class-files
• KT-36769 JVM IR: Missing LVT entries for inline function (default) parameters at call site
• KT-36982 JVM IR: SAM adapter classes are generated as synthetic
• KT-37007 JVM IR: extraneous property accessors are generated in multifile facade for InlineOnly property
• KT-37317 [FIR] Add support of extension functions in postponed lambda completion
• KT-38400 FIR: interface abstract is preferred to Any method in super resolve
• KT-38536 JVM IR: bound adapted function references are not inlined
• KT-38656 FIR: determine overridden member visibility properly
• KT-38901 FIR: Make behavior of integer literals overflow consistent with FE 1.0
• KT-39709 [FIR] False positive UNINITIALIZED_VARIABLE in presence of complex graph with jumps
• KT-39923 Result.Failure will get wrapped with Success when using with RxJava
• KT-40198 '$default' methods in 'kotlin/test/AssertionsKt' generated as non-synthetic by JVM_IR
• KT-40200 IDE: Multiple top-level main functions in different files: broken highlighting, "No descriptor resolved for FUN"
• KT-40262 ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR
• KT-40282 Inline class wrapping Any gets double boxed
• KT-40464 JVM_IR does not generate LINENUMBER at closing brace of (suspend) lambda
• KT-40500 Warnings reporting by Java nullability annotations doesn't work for not top-level types
• KT-40926 IDE import actions do not add required import for convention invoke() extension call
• KT-40948 IllegalAccessError while initializing val property in EXACTLY_ONCE lambda that is passed to another function
• KT-40991 NI: UNRESOLVED_REFERENCE_WRONG_RECEIVER instead of FUNCTION_EXPECTED with convention invoke call
• KT-41163 Double wrapped value in Result class after map operation
• KT-41284 Spring CGLIB proxies break auto-generated data class componentN and copy methods when using JVM IR
• KT-41468 JVM IR: IllegalAccessError on access to abstract base member from another package, from anonymous object inside abstract class
• KT-41491 UNRESOLVED_REFERENCE_WRONG_RECEIVER instead of FUNCTION_EXPECTED when invoking non-functional value as a function
• KT-41493 JVM IR: names of classes for local delegated variables contain the variable name twice
• KT-41792 [FIR] Introduce & use ConeAttribute.UnsafeVariance
• KT-41793 [FIR] Make captured types accessible at the end of resolve
• KT-41809 JVM IR: name for internal $default method doesn't include module name
• KT-41810 JVM IR: Deprecated(HIDDEN) class is incorrectly generated as synthetic
• KT-41841 JVM IR: delegates for private functions with default arguments are generated in multifile classes
• KT-41857 Flaky 'ConcurrentModificationException' through kotlin.serialization.DescriptorSerializer
• KT-41903 JVM IR: do not generate LineNumberTable in auto-generated members of data classes
• KT-41911 JVM IR: nested big-arity function calls are not lowered
• KT-41957 JVM IR: step into suspend function goes to the first line of the file
• KT-41960 JVM IR: smart step into members implemented with delegation to interface doesn't work
• KT-41961 JVM IR: line numbers are not generated in JvmMultifileClass facade declarations
• KT-41962 JVM IR: intermittent -1 line numbers in the state machine cause double stepping in the debugger
• KT-42001 Cannot resolve symbol: AssertionError: Module <sdk 1.8> is not contained in his own dependencies
• KT-42002 JVM / IR: IllegalStateException: "No mapping for symbol: VAR IR_TEMPORARY_VARIABLE" caused by named arguments
• KT-42021 JVM / IR: "IndexOutOfBoundsException: Index 0 out of bounds for length 0" during IR lowering with suspend conversion
• KT-42033 JVM IR: accidental override in Map subclass with custom implementations of some members
• KT-42036 IR: "AssertionError: TypeAliasDescriptor expected: deserialized class Nothing" when referencing typealias with @UnsafeVariance
• KT-42043 JVM IR: Don't generate collection stubs when implementing methods with more specific return types
• KT-42044 Compiler error when lambda with contract surrounded with parentheses
• KT-42114 JVM_IR generates stub for 'removeIf' in abstract classes implementing 'List' and 'Set'
• KT-42115 JVM_IR doesn't generate 'next' and 'hasNext' method in an abstract class implementing 'ListIterator'
• KT-42116 FIR: Java accessor function should not exist in scope together with relevant property
• KT-42117 IR-based evaluator cannot handle Java static final fields
• KT-42118 FIR2IR: field-targeted annotation is placed on a property, not on a field
• KT-42130 FIR: type variable is observed after when condition analysis
• KT-42132 FIR2IR: companion function reference has no dispatch receiver
• KT-42137 JVM IR: AbstractMethodError on complex hierarchy where implementation comes from another supertype and has a more specific type
• KT-42186 JVM / IR: Infinite cycle in for expression when unsigned bytes are used in decreasing loop range
• KT-42251 JVM / IR: "IllegalStateException: Descriptor can be left only if it is last" when comparing the i-th element of the container of Int? and i with change
• KT-42253 JVM IR: NoSuchFieldError on local delegated property in inline function whose call site happens before declaration in the source
• KT-42281 JVM / IR: AnalyzerException when comparing Int and array that cast to Any in if condition
• KT-42340 FIR2IR: duplicating fake overrides
• KT-42344 IR-based evaluator doesn't support "annotation in annotation"
• KT-42346 FIR: double-vararg in IR while resolving collection literal as Java annotation argument
• KT-42348 FIR: false UNINITIALIZED_VARIABLE in local class
• KT-42350 FIR: false UNINITIALIZED_VARIABLE after initialization in try block
• KT-42351 FIR: false HIDDEN in enum entry member call
• KT-42354 JVM / IR: "AssertionError: Unexpected IR element found during code generation" with KProperty get invocation
• KT-42359 FIR2IR: cannot mangle type parameter
• KT-42373 FIR2IR: local object nested class has no parent if forward-referenced by nested class supertype
• KT-42384 FIR (BE): top-level field has no parent class in BE
• KT-42496 FIR resolve: synthetic property is written but has no setter
• KT-42517 FIR: exception in BE for recursive inline call
• KT-42530 "AssertionError: No type for resolved lambda argument" on attempting to assign a Pair to a couple of values in a scratch file
• KT-42601 [FIR] Inherited declaration clash for stdlib inheritors
• KT-42622 NI: IllegalStateException for if expression with method reference inside flow
• KT-42642 ISE: No getProgressionLastElement for progression type IntProgressionType
• KT-42650 JVM IR: extraneous nullability annotation on a generic function of a flexible type
• KT-42656 FIR2IR: unsupported callable reference for Java field
• KT-42725 Debugger steps into core library inline functions in chained calls
• KT-42758 JVM / IR: Deserialized object that overrides readResolve() is not reference equal to the singleton instance
• KT-42770 FIR: duplicating signatures in mangler (typealias for functional type)
• KT-42771 FIR: duplicating signature in mangler (data class with delegate)
• KT-42814 FIR: false UNINITIALIZED_VARIABLE in local function after if...else
• KT-42844 FIR: Property write in init block resolved to parameter write
• KT-42846 JVM_IR: NPE on function reference to @JvmStatic method in a different file
• KT-42933 JVM / IR: "AnalyzerException: Expected an object reference, but found I" with local delegate in inline class
• KT-43006 JVM/JVM_IR: do not generate no-arg constructor for constructor with default arguments if there are inline class types in the signature
• KT-43017 JVM / IR: AssertionError when callable reference passed into a function requiring a suspendable function
• KT-43051 JVM IR: extraneous methods overridding default (Java 8) collection methods in inline class that extends MutableList
• KT-43067 Inner class declaration inside inline class should be prohibited
• KT-43068 JVM IR: no generic signatures for explicitly written methods in a List subclass, whose signature coincides with MutableList methods
• KT-43132 JVM / IR: Method name '<get-...>' in class '...$screenTexts$1$1' cannot be represented in dex format.
• KT-43145 JVM IR: $default methods in multi-file facades are generated as non-synthetic final
• KT-43156 FIR: false UNINITIALIZED_VARIABLE after initialization in synchronized block
• KT-43196 JVM: extra non-static member is generated for extension property in inline class
• KT-43199 JVM IR: synthetic flag for deprecated-hidden is not generated for DeprecatedSinceKotlin and deprecation from override
• KT-43207 JVM IR: no collection stub for iterator is generated on extending AbstractCollection
• KT-43217 JVM_IR: Multiple FAKE_OVERRIDES for java methods using @NonNull Double and java double
• KT-43225 Confusing message of warning NULLABLE_TYPE_PARAMETER_AGAINST_NOT_NULL_TYPE_PARAMETER
• KT-43226 "Incompatible stack heights" with non-local return to outer lambda inside suspend lambda
• KT-43242 JVM / IR: "AnalyzerException: Expected I, but found R" caused by when inside object with @Nullable Integer subject
• KT-43249 Wrong code generated for suspend lambdas with inline class parameters
• KT-43286 JVM IR: IAE "Inline class types should have the same representation: Lkotlin/UInt; != I" on smart cast of unsigned type value with JVM target 1.8
• KT-43326 JVM_IR: No deprecated flag for getter of deprecated interface property copied to DefaultImpls
• KT-43327 JVM_IR: No deprecated or synthetic flag for accessors of deprecated-hidden property of unsigned type
• KT-43332 FIR: Smart casts lead to false-positive ambiguity
• KT-43370 JVM IR: No deprecated flag for getter of deprecated property copied via delegation by interface
• KT-43459 JVM_IR. Wrong signature for synthetic $annotations method for extension property on nullable primitive
• KT-43478 NI: "IndexOutOfBoundsException: Index: 3, Size: 3" caused by is check with raw type inside if condition with when inside
• KT-43519 JVM_IR. External functions generated differently in multi file facades
• KT-43524 JVM_IR. Missed deprecation flag on companion @JvmStatic property accessor
• KT-43525 Prohibit JvmOverloads on declarations with inline class types in parameters
• KT-43536 JVM IR: IllegalStateException is not caught by runCatching under Deferred.await() with kotlinx.coroutines
• KT-43562 JVM IR: incorrect mangling for Collection.size in unsigned arrays
• KT-43584 [FIR] Java annotations with named arguments aren't loaded correctly
• KT-43587 Invalid default parameter value in expect actual declaration on jvm
• KT-43630 "AssertionError: Number of arguments should not be less than number of parameters" during capturing intersection raw type with star projection
• KT-43698 NoSuchMethodError for inline class implementing interface with @JvmDefault methods, -Xjvm-default=enable
• KT-43741 Report error on inline class implementing 'kotlin.Cloneable'
• KT-43845 org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate expression: KtBlockExpression
• KT-43956 NI: "Error type encountered – UninferredParameterTypeConstructor" on "try" and other constructs with code block as a value
• KT-44055 Left uninferred type parameter for callable references inside special calls
• KT-44113 Compiler frontend exception: Number of arguments should not be less than number of parameters, but: parameters=2, args=1
• KT-44145 No highlighting for not initialized base constructor and NoSuchMethodError in Android plugin
• KT-44540 Regression in 1.4.30 in intellij-community: type mismatch for generic function call with generic Java class
• KT-44563 Type Inference loosing type annotations in lambda type expectation for function calls with block parameters

IDE

New Features

• KT-44075 Sealed interfaces: New Kotlin Class/File menu update

Fixes

• KT-29454 Light class with unexpected name when using obfuscated library
• KT-31553 Complete Statement: Wrong auto-insertion of closing curly brace for a code block
• KT-33466 IDE generates incorrect external override with body for overriding open external method
• KT-39458 Add CLI support for UL classes
• KT-40403 UAST: PsiMethod for invoked extension function/property misses @receiver: annotations
• KT-41406 Kotlin doesn't report annotations for type arguments (no way to add @Nls, @NonNls annotations to String collections in Kotlin)
• KT-41420 UAST does not return information about type annotations
• KT-42194 OOME: Java heap space from incremental compilation
• KT-42754 MPP: no smart cast for Common nullable property used in platform module
• KT-42821 MPP, IDE: Platform-specific errors are reported even when build doesn't target that platform
• KT-44116 Add language version 1.5 to the compiler configuration preferences
• KT-44523 IDE notification for trying new JVM backend
• KT-44543 Kotlin's LowMemoryWatcher leaks on Kotlin plugin unload

IDE. Android

• KT-42381 MPP: Bad IDEA dependencies: JVM module depending on built artifact instead of sources of module with Android Plugin applied

IDE. Completion

• KT-44016 Code completion: support for "sealed interface"
• KT-44250 Code completion does not work in when expression with sealed type argument

IDE. Gradle. Script

• KT-39105 AE “JvmBuiltins has not been initialized properly” after creating new Gradle/Kotlin-based project via old Project Wizard

IDE. Inspections and Intentions

New Features

• KT-22666 "Create enum constant" quick fix could be provided
• KT-24556 Add Remove quick fix for "Expression under 'when' is never equal to null"
• KT-34121 Report unused result of data class copy method
• KT-34533 INLINE_CLASS_CONSTRUCTOR_NOT_FINAL_READ_ONLY_PARAMETER: Add quickfix "Add val to parameter"
• KT-35215 Quickfix for CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT to remove const modifier
• KT-40251 Intention action to evaluate compile time expression
• KT-44017 Sealed interfaces: Java side Inspection "implementation of Kotlin sealed interface is forbidden"
• KT-43941 Sealed interfaces: intention to extend class/interface
• KT-44043 Sealed interfaces: quickfix to move class/interface to proper location

Fixes

• KT-20420 Intention "Put arguments/parameters on separate lines" doesn't respect the "Place ')' on new line" Kotlin code style setting
• KT-21799 Quickfix "Change function signature" for receiver type doesn't change it
• KT-22665 "Create object" quick fix produce wrong code for enum
• KT-23934 IntelliJ suggest "merge map to joinToString" even when such action is impossible due to suspending actions in map
• KT-30894 Wrong results of intention "Add names to call arguments" when backticked argument starts from digit
• KT-31523 ReplaceWith introduces additional argument name for lambda when named argument is used on call-site
• KT-31833 JavaMapForEachInspection should report for expression with implicit receiver
• KT-33096 Turn 'MapGetWithNotNullAssertionOperator' into an intention
• KT-33212 False positive "map.put() should be converted to assignment" inspection when class inherited from MutableMap has "set" method
• KT-34270 False negative "Join declaration and assignment" with constructor call
• KT-34859 False positive "Should be replaced with Kotlin function" inspection for Character.toString(int) function
• KT-34959 False positive "Redundant overriding method" with different implemented/overridden signatures
• KT-35051 False positive "Remove redundant backticks" if variable inside the string and isn't followed by space
• KT-35097 False positive "Call replaceable with binary operator" on explicit 'equals' call on a platform type value
• KT-35165 "Replace 'if' with elvis operator": don't suggest if val initializer is a complex expression
• KT-35346 False positive 'Make internal' suggestion for function inside interface
• KT-35357 "Move lambda argument out of parentheses" does not preserve block comments
• KT-38349 Invalid suggestion to fold to elvis when having a var-variable
• KT-40704 False negative "Redundant semicolon" at start of line
• KT-40861 "Convert to secondary constructor" intention expected on class name
• KT-40879 False positive "Redundant 'inner' modifier" when calling another inner class with empty constructor
• KT-40985 "Remove explicit type arguments" is suggested when type has an annotation
• KT-41223 False positive "Redundant inner modifier" inspection ignores constructor arguments of object expressions
• KT-41246 False positive "Receiver parameter is never used" with anonymous function expression
• KT-41298 "Remove redundant 'with' call" intention works incorrectly with non-local returns and single-expression functions
• KT-41311 False positive "Redundant inner modifier" when deriving from a nested Java class
• KT-41499 "Convert receiver to parameter" produces code with incorrect order of generic type and function invocation in case of generic function with lambda as a parameter
• KT-41680 False positive "Redundant inner modifier" when deriving from class with non-empty constructor and value passed to it from enclosing class
• KT-42201 Add Opt-In action doesn't work if there is already OptIn annotation
• KT-42255 "Replace elvis expression with 'if' expression" intention shouldn't introduce unnecessary variable if 'error' expression is used

IDE. JS

• KT-43760 KJS: Debugging Kotlin code for Node.js runtime doesn't work

IDE. Misc

• KT-44018 Sealed interfaces: IDE side implementation for hierarchy provider

IDE. Multiplatform

• KT-40814 MISSING_DEPENDENCY_CLASS when consuming native-shared library in a source-set with fewer targets than library has

IDE. Run Configurations

• KT-34535 Unable to run common tests on Android via gutter icon in a multiplatform project

IDE. Scratch

• KT-25038 Scratch: Destructuring declaration produces an unresolved reference
• KT-43415 Kotlin scratch file could not be run and could lead to dead lock

IDE. Script

• KT-44117 IDE / Scripts: custom kotlin script definitions aren't loaded

JavaScript

Fixes

• KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner
• KT-39964 Throwable incorrectly implements constructor for (null, cause) args in K/JS-IR
• KT-40090 KJS: IR. Invalid behaviour for optional parameters (redundant tail undefined parameters)
• KT-40686 KJS: Uncaught ReferenceError caused by external class as type inside eventListener in init block
• KT-40771 KJS / IR: "ReferenceError: Metadata is not defined" caused by default parameter value in inner class constructor
• KT-41032 KJS / IR: "AssertionError: Assertion failed" caused by class that is delegated to inherited interface
• KT-41076 KJS / IR: "AssertionError: Assertion failed" caused by overridden extensiion function in child class
• KT-41771 KJS / IR: IndexOutOfBoundsException "Index 0 out of bounds for length 0" caused by inline class with List in primary constructor and vararg in secondary
• KT-42025 KJS / IR: IrConstructorCallImpl: No such type argument slot: 0
• KT-42112 KJS: StackOverflowError on @JsExport in case of name clash with function with Enum parameter with star-projection
• KT-42262 KJS: break-statements without label are ignored in a when
• KT-42357 KotlinJS - external class constructor with vararg does not correctly handle spread operator.
• KT-42364 KJS: Properties of interface delegate are non-configurable
• KT-43212 JS IR: support init blocks inside inline classes
• KT-43222 KJS IR: prototype lazy initialization for top-level properties like in JVM
• KT-43313 KJS / IR: "Can't find name for declaration FUN" for secondary constructor
• KT-43901 Call to enum values() method from enum companion object leads to non-initialized enum instances

KMM Plugin

• KT-41677 Could not launch iOS project with custom display name
• KT-42463 Launch common tests for Android on local JVM via run gutter
• KT-43188 NoSuchMethodError in New Module Wizard of KMM Project

Libraries

• KT-41112 Docs: add more details about bit shift operations
• KT-41278 map.entries.contains can return false if the argument is not MutableEntry
• KT-41356 Incorrect documentation for rangeTo function
• KT-44456 Introduce locale-agnostic API for case conversions
• KT-44458 Introduce new Char-to-code and Char-to-digit conversions

Middle-end. IR

• KT-41765 [Native/IR] Could not resolveFakeOverride()
• KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

• KT-44219 1.4.30-M1: Non-reified type parameters with recursive bounds are not supported yet
• KT-44271 [Kotlin/Native] Incorrect linking when targeting linux_x64 from mingw_x64 host

Native. C and ObjC Import

• KT-42412 [C-interop] Modality of generated property accessors is always FINAL

Native. ObjC Export

• KT-38530 Native: values() method of enum classes is not exposed to Objective-C/Swift
• KT-43599 K/N: Unbound symbols not allowed

Native. Platform libraries

• KT-43597 Support for Xcode 12.2 SDK

Native. Platforms

• KT-43276 Support watchos_x64 target

Native. Runtime

• KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets

Native. Stdlib

• KT-42172 Kotlin/Native: StableRef.dispose race condition on Kotlin deinitRuntime
• KT-42428 Inconsistent behavior of map.entries on Kotlin.Native

Reflection

• KT-34024 "KotlinReflectionInternalError: Inconsistent number of parameters" with javaMethod on suspending functions with inline class in function signature or inside the function

Tools. CLI

• KT-43294 Support -no-stdlib option for the kotlin runner
• KT-43406 JVM: produce deterministic jar files if -d option value is a .jar file

Tools. CLI. Native

• KT-40670 Allow to override konan.properties via CLI

Tools. Compiler Plugins

• KT-41764 KJS /IR IllegalStateException: "Symbol for public kotlin/arrayOf is unbound" with serialization plugin
• KT-42976 kotlinx.serialization + JVM IR: NPE on annotation with @SerialInfo
• KT-43725 Prohibit inner and local classes in kotlin-noarg

Tools. Gradle

• KT-38692 KaptGenerateStubs Gradle task will not clean up outputs when sources are empty and not an incremental build
• KT-40140 kotlin-android plugin eagerly creates several Gradle tasks
• KT-41295 Kotlin Gradle Plugin 1.4.20 Configuration Caching bug due to friendPath provider
• KT-42058 Support moduleName option in Kotlin Gradle plugin for JVM
• KT-43054 Implementation of AbstractKotlinTarget#buildAdhocComponentsFromKotlinVariants breaks configuration caching
• KT-43489 Incremental compilation - unable to find history files causing full recompilation
• KT-43740 Gradle out-of-process runner fails with unclear diagnostics if build directory does not exist
• KT-43895 Fix cacheability warnings for the Kotlin plugins

Tools. Gradle. JS

• KT-42400 Kotlin/JS: Gradle DSL: customField() is rejected in Groovy build.gradle
• KT-42462 NPM dependency declaration with Groovy interpolated string
• KT-42954 Kotlin/JS: IDE import after changing kotlin.js.externals.output.format does not re-generate externals
• KT-43535 Common webpack configuration breaks on lambda serialization in some cases
• KT-43668 PackageJson task use file dependencies as is (files and directories), but only files necessary
• KT-43793 nodeArgs in NodeJsExec task
• KT-43842 KJS: Invalid output.library support for null value
• KT-44104 KJS / Gradle: An ability to pass jvm args to K2JSDce process

Tools. Gradle. Multiplatform

• KT-42269 Setup default dependsOn edges for Android source sets
• KT-42413 [MPP/gradle] withJava breaks build on 1.4.20-M1
• KT-43141 Gradle / Configuration cache: NPE from org.jetbrains.kotlin.gradle.tasks.KotlinCompileCommon.getKotlinOptions() on reusing configuration cache for task compileCommonMainKotlinMetadata
• KT-43329 Gradle / Configuration cache: IAE “Parameter specified as non-null is null: method KotlinMetadataTargetConfiguratorKt.isCompatibilityMetadataVariantEnabled, parameter $this$isCompatibilityMetadataVariantEnabled” on reusing configuration cache for task compileKotlinMetadata
• KT-44298 Kotlin 1.4.20+ MPP "root" module publication does not include the source JAR that used to be published in the -metadata modules

Tools. Gradle. Native

• KT-39564 Make kotlin-native Gradle tasks Cacheable
• KT-42485 Fail on cinterop: clang_indexTranslationUnit returned 1
• KT-42550 Adding subspec dependency with git location failed
• KT-42849 Gradle / Configuration cache: tasks nativeMetadataJar, runReleaseExecutableNative, runDebugExecutableNative are unsupported and fails on reusing configuration cache
• KT-42938 CocoaPods Gradle plugin: podBuildDependencies doesn't properly report xcodebuild failures
• KT-43151 Gradle / Configuration cache: UPAE “lateinit property binary has not been initialized” on reusing configuration cache for linkDebugExecutableNative, linkDebugTestNative, linkReleaseExecutableNative tasks
• KT-43516 Failed to resolve Kotin library [Multiple Multiplatform modules]

Tools. Incremental Compile

• KT-42937 another compilation fail (problem with compilation caches?)

Tools. JPS

• KT-39536 JPS compilation fails with IOException "storage is already closed"

Tools. Parcelize

• KT-41553 JVM IR, Parcelize: IrStarProjectionImpl cannot be cast to class IrTypeProjection

Tools. Scripts

• KT-43534 Allow running "main.kts" script that does not end in a "main.kts" filename (would allow kotlin scripting on GitHub Actions)
• KT-43176 NoSuchMethodError: 'int Script.access$getAValue$p(Script) for not-inlined functions
• KT-43294 Support -no-stdlib option for the kotlin runner

Tools. kapt

• KT-34340 Incremental annotation processor recompile all files (only if KAPT enabled).
• KT-36667 Kapt: Add a flag to strip kotlin.Metadata() annotations from stubs
• KT-40493 KAPT does not support aggregating annotations processors in incremental mode
• KT-40882 Kapt stub generation is non-deterministic for incremental compilation
• KT-41788 NullPointerException: Random crashes of build using gradle and kapt because of not calling Processor.init()
• KT-42182 KAPT: Does not consider generated sources for incremental compilation.

Checksums

File	Sha256
kotlin-compiler-1.4.30.zip	7b0aae9dca5ea899ef05dedc0a6fdd6e359451e56ff0dd3354443b3208b31800
kotlin-native-linux-1.4.30.tar.gz	51c12099acf2e2131f063659c59d5f78daaba5c9bc39cc92289d962359e8ccce
kotlin-native-macos-1.4.30.tar.gz	892afbf069483b355933885c931367aaaaa32dfe26d84bbfd8636f90f0c7b556
kotlin-native-windows-1.4.30.zip	6c56581902e094c0b1b292abb854d314d5cee650528f23015f8390301fa84ae2

CHANGELOG

1.4.30-RC

Info about particular features

• JVM IR backend reaches Beta
• Inline classes improvements
• JVM records preview with -language-version 1.5 and -Xjvm-enable-preview
• Sealed interfaces preview with -language-version 1.5

New Features

• KT-41265 Support noarg compiler plugin for JVM IR
• KT-43592 Promote JVM IR compiler backend to Beta
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-44021 Enable JVM IR backend by default in 1.5

Fixes

• KT-11454 Load annotations on TYPE_USE/TYPE_PARAMETER positions from Java class-files
• KT-11732 Verify error for generic interface method invocation with default parameters
• KT-14612 "ISE: Recursive call in a lazy value" during processing of a (weakly) recursive type alias
• KT-18344 Upper bound of a typealias type parameter is not reported correctly if it contains the typealias itself
• KT-18768 @Notnull annotation from Java does not work with varargs
• KT-20548 java.lang.IllegalStateException: Illegal class container on simple Java code parsing
• KT-23816 Inline classes: constants and annotations
• KT-24158 AE: No receiver found on incomplete code with $-signs
• KT-24392 Nullability of Java arrays is read incorrectly if @Nullable annotation has both targets TYPE_USE and VALUE_PARAMETER
• KT-29735 KNPE at KtEnumEntrySuperclassReferenceExpression.getReferencedElement with explicit type argument inside enum member constructor
• KT-31389 ClassFormatError with companion object in annotation with @JvmStatic
• KT-31907 ISE: UNIT_EXPECTED_TYPE on parsing array literal inside lambda with Unit return type
• KT-36399 Gradually support TYPE_USE nullability annotations read from class-files
• KT-41163 Double wrapped value in Result class after map operation
• KT-41284 Spring CGLIB proxies break auto-generated data class componentN and copy methods when using JVM IR
• KT-41911 JVM IR: nested big-arity function calls are not lowered
• KT-42001 Cannot resolve symbol: AssertionError: Module <sdk 1.8> is not contained in his own dependencies
• KT-42036 IR: "AssertionError: TypeAliasDescriptor expected: deserialized class Nothing" when referencing typealias with @UnsafeVariance
• KT-42530 "AssertionError: No type for resolved lambda argument" on attempting to assign a Pair to a couple of values in a scratch file
• KT-42622 NI: IllegalStateException for if expression with method reference inside flow
• KT-43051 JVM IR: extraneous methods overridding default (Java 8) collection methods in inline class that extends MutableList
• KT-43067 Inner class declaration inside inline class should be prohibited
• KT-43225 Confusing message of warning NULLABLE_TYPE_PARAMETER_AGAINST_NOT_NULL_TYPE_PARAMETER
• KT-43459 JVM_IR. Wrong signature for synthetic $annotations method for extension property on nullable primitive
• KT-43478 NI: "IndexOutOfBoundsException: Index: 3, Size: 3" caused by is check with raw type inside if condition with when inside
• KT-43519 JVM_IR. External functions generated differently in multi file facades
• KT-43524 JVM_IR. Missed deprecation flag on companion @JvmStatic property accessor
• KT-43536 JVM IR: IllegalStateException is not caught by runCatching under Deferred.await() with kotlinx.coroutines
• KT-43587 Invalid default parameter value in expect actual declaration on jvm
• KT-43630 "AssertionError: Number of arguments should not be less than number of parameters" during capturing intersection raw type with star projection
• KT-43698 NoSuchMethodError for inline class implementing interface with @JvmDefault methods, -Xjvm-default=enable
• KT-43741 Report error on inline class implementing 'kotlin.Cloneable'
• KT-43845 org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate expression: KtBlockExpression
• KT-43956 NI: "Error type encountered – UninferredParameterTypeConstructor" on "try" and other constructs with code block as a value
• KT-44055 Left uninferred type parameter for callable references inside special calls
• KT-44113 Compiler frontend exception: Number of arguments should not be less than number of parameters, but: parameters=2, args=1
• KT-44145 No highlighting for not initialized base constructor and NoSuchMethodError in Android plugin

IDE

New Features

• KT-44075 Sealed interfaces: New Kotlin Class/File menu update

Fixes

• KT-29454 Light class with unexpected name when using obfuscated library
• KT-42194 OOME: Java heap space from incremental compilation
• KT-44116 Add language version 1.5 to the compiler configuration preferences

IDE. Android

IDE. Completion

• KT-44016 Code completion: support for "sealed interface"

IDE. Gradle. Script

• KT-39105 AE “JvmBuiltins has not been initialized properly” after creating new Gradle/Kotlin-based project via old Project Wizard

IDE. Inspections and Intentions

New Features

• KT-44017 Sealed interfaces: Java side Inspection "implementation of Kotlin sealed interface is forbidden"
• KT-43941 Sealed interfaces: intention to extend class/interface

IDE. Misc

• KT-44018 Sealed interfaces: IDE side implementation for hierarchy provider

IDE. Multiplatform

• KT-40814 MISSING_DEPENDENCY_CLASS when consuming native-shared library in a source-set with fewer targets than library has

IDE. Run Configurations

• KT-34535 Unable to run common tests on Android via gutter icon in a multiplatform project

IDE. Scratch

• KT-25038 Scratch: Destructuring declaration produces an unresolved reference

IDE. Script

• KT-44117 IDE / Scripts: custom kotlin script definitions aren't loaded

JavaScript

Fixes

• KT-41076 KJS / IR: "AssertionError: Assertion failed" caused by overridden extensiion function in child class
• KT-42357 KotlinJS - external class constructor with vararg does not correctly handle spread operator.
• KT-43212 JS IR: support init blocks inside inline classes
• KT-43901 Call to enum values() method from enum companion object leads to non-initialized enum instances

Libraries

• KT-41278 map.entries.contains can return false if the argument is not MutableEntry

Middle-end. IR

• KT-41765 [Native/IR] Could not resolveFakeOverride()
• KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

• KT-44271 [Kotlin/Native] Incorrect linking when targeting linux_x64 from mingw_x64 host
• KT-44219 1.4.30-M1: Non-reified type parameters with recursive bounds are not supported yet

Native. ObjC Export

• KT-43599 K/N: Unbound symbols not allowed

Native. Stdlib

• KT-42172 Kotlin/Native: StableRef.dispose race condition on Kotlin deinitRuntime
• KT-42482 Kotlin subclasses of Obj-C classes are incompatible with ISA swizzling (it causes crashes)

Tools. CLI

• KT-43294 Support -no-stdlib option for the kotlin runner

Tools. Compiler Plugins

• KT-43725 Prohibit inner and local classes in kotlin-noarg

Tools. Gradle

• KT-43740 Gradle out-of-process runner fails with unclear diagnostics if build directory does not exist
• KT-43895 Fix cacheability warnings for the Kotlin plugins

Tools. Gradle. JS

• KT-43668 PackageJson task use file dependencies as is (files and directories), but only files necessary
• KT-43793 nodeArgs in NodeJsExec task
• KT-43842 KJS: Invalid output.library support for null value
• KT-44104 KJS / Gradle: An ability to pass jvm args to K2JSDce process

Tools. Gradle. Multiplatform

• KT-44298 Kotlin 1.4.20+ MPP "root" module publication does not include the source JAR that used to be published in the -metadata modules

Tools. Incremental Compile

• KT-42937 another compilation fail (problem with compilation caches?)

Tools. Kapt

• KT-44130 KAPT changes field order in 1.4.30-M1

Tools. Scripts

• KT-43534 Allow running "main.kts" script that does not end in a "main.kts" filename (would allow kotlin scripting on GitHub Actions)
• KT-43176 NoSuchMethodError: 'int Script.access$getAValue$p(Script) for not-inlined functions
• KT-43294 Support -no-stdlib option for the kotlin runner

Checksums

File	Sha256
kotlin-compiler-1.4.30-RC.zip	d0103f8d3ffe4545a2bcff8b01b348e45b4338387768c7c25901275a9c918691
kotlin-native-prebuilt-linux-1.4.30-RC.tar.gz	07f9bedf68b65d59042d9c24d1157836bd9a8a94b9da49e2b2b7871d90995cbf
kotlin-native-prebuilt-macos-1.4.30-RC.tar.gz	e2c3bd19aec8eed8a8fbf55e6b213f1ea37f97457a7cb08fd71ff9d865fc01ec
kotlin-native-prebuilt-windows-1.4.30-RC.zip	31e358d21f046b89b0aee82bd82814480ba41b6556c9f31066af8fbb9aa3d3a0

You could find information about EAP program and setup instructions here

CHANGELOG

1.4.30-M1

Android

• KT-42383 HMPP: Bad IDEA dependencies: Missing dependency from p1:jvmAndAndroid to p2:jvmAndAndroid

Backend. Native

• KT-38772 Native: support non-reified type parameters in typeOf
• KT-42234 Move LLVM optimization parameters into konan.properties
• KT-42649 IndexOutOfBoundsException during InlineClassTransformer lowering
• KT-42942 Native: optimize peak backend memory by clearing BindingContext after psi2ir
• KT-43198 init blocks inside inline classes
• KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner

Backend. JS

• KT-41227 KJS IR: don't copy to child's prototype references to the function from parent

Backend. IR

• KT-41227 KJS IR: don't copy to child's prototype references to the function from parent

Compiler

New Features

• KT-28055 Consider supporting init blocks inside inline classes
• KT-28056 Consider supporting non-public primary constructors for inline classes
• KT-42094 Allow open callable members in expect interfaces
• KT-43129 FIR: Support OverloadResolutionByLambdaReturnType

Performance Improvements

• KT-41352 JVM IR: reduce bytecode size in for loops and range checks with 'until' by not using inclusive end
• KT-41644 NI: Infinite compilation
• KT-42791 OutOfMemoryError on compilation using kotlin 1.4 on a class with a lot of type inference
• KT-42920 NI: Improve performance around adding constraints

Fixes

• KT-22465 Excessive synthetic method for private setter from superclass
• KT-26229 Lambda/anonymous function argument in parentheses is not supported for callsInPlace effect
• KT-32228 Inconsistent boxing/unboxing for inline classes when interface is specialized by object expression
• KT-32450 Inline class incorrectly gets re-wrapped when provided to a function
• KT-35849 Missing nullability assertion on lambda return value if expected type has generic return value type
• KT-35902 Kotlin generates a private parameterless constructor for constructors taking inline class arguments with default values
• KT-36769 JVM IR: Missing LVT entries for inline function (default) parameters at call site
• KT-36982 JVM IR: SAM adapter classes are generated as synthetic
• KT-37007 JVM IR: extraneous property accessors are generated in multifile facade for InlineOnly property
• KT-37317 [FIR] Add support of extension functions in postponed lambda completion
• KT-38400 FIR: interface abstract is preferred to Any method in super resolve
• KT-38536 JVM IR: bound adapted function references are not inlined
• KT-38656 FIR: determine overridden member visibility properly
• KT-38901 FIR: Make behavior of integer literals overflow consistent with FE 1.0
• KT-39709 [FIR] False positive UNINITIALIZED_VARIABLE in presence of complex graph with jumps
• KT-39923 Result.Failure will get wrapped with Success when using with RxJava
• KT-40198 '$default' methods in 'kotlin/test/AssertionsKt' generated as non-synthetic by JVM_IR
• KT-40262 ACC_DEPRECATED flag not generated for property getter delegate in multifile class facade in JVM_IR
• KT-40282 Inline class wrapping Any gets double boxed
• KT-40464 JVM_IR does not generate LINENUMBER at closing brace of (suspend) lambda
• KT-40948 IllegalAccessError while initializing val property in EXACTLY_ONCE lambda that is passed to another function
• KT-41468 JVM IR: IllegalAccessError on access to abstract base member from another package, from anonymous object inside abstract class
• KT-41493 JVM IR: names of classes for local delegated variables contain the variable name twice
• KT-41792 [FIR] Introduce & use ConeAttribute.UnsafeVariance
• KT-41793 [FIR] Make captured types accessible at the end of resolve
• KT-41809 JVM IR: name for internal $default method doesn't include module name
• KT-41810 JVM IR: Deprecated(HIDDEN) class is incorrectly generated as synthetic
• KT-41841 JVM IR: delegates for private functions with default arguments are generated in multifile classes
• KT-41857 Flaky 'ConcurrentModificationException' through kotlin.serialization.DescriptorSerializer
• KT-41903 JVM IR: do not generate LineNumberTable in auto-generated members of data classes
• KT-41957 JVM IR: step into suspend function goes to the first line of the file
• KT-41960 JVM IR: smart step into members implemented with delegation to interface doesn't work
• KT-41961 JVM IR: line numbers are not generated in JvmMultifileClass facade declarations
• KT-41962 JVM IR: intermittent -1 line numbers in the state machine cause double stepping in the debugger
• KT-42002 JVM / IR: IllegalStateException: "No mapping for symbol: VAR IR_TEMPORARY_VARIABLE" caused by named arguments
• KT-42021 JVM / IR: "IndexOutOfBoundsException: Index 0 out of bounds for length 0" during IR lowering with suspend conversion
• KT-42033 JVM IR: accidental override in Map subclass with custom implementations of some members
• KT-42043 JVM IR: Don't generate collection stubs when implementing methods with more specific return types
• KT-42044 Compiler error when lambda with contract surrounded with parentheses
• KT-42114 JVM_IR generates stub for 'removeIf' in abstract classes implementing 'List' and 'Set'
• KT-42115 JVM_IR doesn't generate 'next' and 'hasNext' method in an abstract class implementing 'ListIterator'
• KT-42116 FIR: Java accessor function should not exist in scope together with relevant property
• KT-42117 IR-based evaluator cannot handle Java static final fields
• KT-42118 FIR2IR: field-targeted annotation is placed on a property, not on a field
• KT-42130 FIR: type variable is observed after when condition analysis
• KT-42132 FIR2IR: companion function reference has no dispatch receiver
• KT-42137 JVM IR: AbstractMethodError on complex hierarchy where implementation comes from another supertype and has a more specific type
• KT-42186 JVM / IR: Infinite cycle in for expression when unsigned bytes are used in decreasing loop range
• KT-42251 JVM / IR: "IllegalStateException: Descriptor can be left only if it is last" when comparing the i-th element of the container of Int? and i with change
• KT-42253 JVM IR: NoSuchFieldError on local delegated property in inline function whose call site happens before declaration in the source
• KT-42281 JVM / IR: AnalyzerException when comparing Int and array that cast to Any in if condition
• KT-42340 FIR2IR: duplicating fake overrides
• KT-42344 IR-based evaluator doesn't support "annotation in annotation"
• KT-42346 FIR: double-vararg in IR while resolving collection literal as Java annotation argument
• KT-42348 FIR: false UNINITIALIZED_VARIABLE in local class
• KT-42350 FIR: false UNINITIALIZED_VARIABLE after initialization in try block
• KT-42351 FIR: false HIDDEN in enum entry member call
• KT-42354 JVM / IR: "AssertionError: Unexpected IR element found during code generation" with KProperty get invocation
• KT-42359 FIR2IR: cannot mangle type parameter
• KT-42373 FIR2IR: local object nested class has no parent if forward-referenced by nested class supertype
• KT-42384 FIR (BE): top-level field has no parent class in BE
• KT-42496 FIR resolve: synthetic property is written but has no setter
• KT-42517 FIR: exception in BE for recursive inline call
• KT-42601 [FIR] Inherited declaration clash for stdlib inheritors
• KT-42642 ISE: No getProgressionLastElement for progression type IntProgressionType
• KT-42650 JVM IR: extraneous nullability annotation on a generic function of a flexible type
• KT-42656 FIR2IR: unsupported callable reference for Java field
• KT-42725 Debugger steps into core library inline functions in chained calls
• KT-42758 JVM / IR: Deserialized object that overrides readResolve() is not reference equal to the singleton instance
• KT-42770 FIR: duplicating signatures in mangler (typealias for functional type)
• KT-42771 FIR: duplicating signature in mangler (data class with delegate)
• KT-42814 FIR: false UNINITIALIZED_VARIABLE in local function after if...else
• KT-42844 FIR: Property write in init block resolved to parameter write
• KT-42846 JVM_IR: NPE on function reference to @JvmStatic method in a different file
• KT-42933 JVM / IR: "AnalyzerException: Expected an object reference, but found I" with local delegate in inline class
• KT-43006 JVM/JVM_IR: do not generate no-arg constructor for constructor with default arguments if there are inline class types in the signature
• KT-43017 JVM / IR: AssertionError when callable reference passed into a function requiring a suspendable function
• KT-43068 JVM IR: no generic signatures for explicitly written methods in a List subclass, whose signature coincides with MutableList methods
• KT-43132 JVM / IR: Method name '<get-...>' in class '...$screenTexts$1$1' cannot be represented in dex format.
• KT-43145 JVM IR: $default methods in multi-file facades are generated as non-synthetic final
• KT-43156 FIR: false UNINITIALIZED_VARIABLE after initialization in synchronized block
• KT-43196 JVM: extra non-static member is generated for extension property in inline class
• KT-43199 JVM IR: synthetic flag for deprecated-hidden is not generated for DeprecatedSinceKotlin and deprecation from override
• KT-43207 JVM IR: no collection stub for iterator is generated on extending AbstractCollection
• KT-43217 JVM_IR: Multiple FAKE_OVERRIDES for java methods using @NonNull Double and java double
• KT-43226 "Incompatible stack heights" with non-local return to outer lambda inside suspend lambda
• KT-43242 JVM / IR: "AnalyzerException: Expected I, but found R" caused by when inside object with @Nullable Integer subject
• KT-43249 Wrong code generated for suspend lambdas with inline class parameters
• KT-43286 JVM IR: IAE "Inline class types should have the same representation: Lkotlin/UInt; != I" on smart cast of unsigned type value with JVM target 1.8
• KT-43326 JVM_IR: No deprecated flag for getter of deprecated interface property copied to DefaultImpls
• KT-43327 JVM_IR: No deprecated or synthetic flag for accessors of deprecated-hidden property of unsigned type
• KT-43332 FIR: Smart casts lead to false-positive ambiguity
• KT-43370 JVM IR: No deprecated flag for getter of deprecated property copied via delegation by interface
• KT-43525 Prohibit JvmOverloads on declarations with inline class types in parameters
• KT-43562 JVM IR: incorrect mangling for Collection.size in unsigned arrays
• KT-43584 [FIR] Java annotations with named arguments aren't loaded correctly

IDE

• KT-31553 Complete Statement: Wrong auto-insertion of closing curly brace for a code block
• KT-33466 IDE generates incorrect external override with body for overriding open external method
• KT-39458 Add CLI support for UL classes
• KT-40403 UAST: PsiMethod for invoked extension function/property misses @receiver: annotations
• KT-41406 Kotlin doesn't report annotations for type arguments (no way to add @Nls, @NonNls annotations to String collections in Kotlin)
• KT-41420 UAST does not return information about type annotations
• KT-42754 MPP: no smart cast for Common nullable property used in platform module
• KT-42821 MPP, IDE: Platform-specific errors are reported even when build doesn't target that platform

IDE. Android

• KT-42381 MPP: Bad IDEA dependencies: JVM module depending on built artifact instead of sources of module with Android Plugin applied

IDE. Inspections and Intentions

New Features

• KT-22666 "Create enum constant" quick fix could be provided
• KT-24556 Add Remove quick fix for "Expression under 'when' is never equal to null"
• KT-34121 Report unused result of data class copy method
• KT-34533 INLINE_CLASS_CONSTRUCTOR_NOT_FINAL_READ_ONLY_PARAMETER: Add quickfix "Add val to parameter"
• KT-35215 Quickfix for CONST_VAL_NOT_TOP_LEVEL_OR_OBJECT to remove const modifier
• KT-40251 Intention action to evaluate compile time expression

Fixes

• KT-20420 Intention "Put arguments/parameters on separate lines" doesn't respect the "Place ')' on new line" Kotlin code style setting
• KT-21799 Quickfix "Change function signature" for receiver type doesn't change it
• KT-22665 "Create object" quick fix produce wrong code for enum
• KT-23934 IntelliJ suggest "merge map to joinToString" even when such action is impossible due to suspending actions in map
• KT-30894 Wrong results of intention "Add names to call arguments" when backticked argument starts from digit
• KT-31523 ReplaceWith introduces additional argument name for lambda when named argument is used on call-site
• KT-31833 JavaMapForEachInspection should report for expression with implicit receiver
• KT-33096 Turn 'MapGetWithNotNullAssertionOperator' into an intention
• KT-33212 False positive "map.put() should be converted to assignment" inspection when class inherited from MutableMap has "set" method
• KT-34270 False negative "Join declaration and assignment" with constructor call
• KT-34859 False positive "Should be replaced with Kotlin function" inspection for Character.toString(int) function
• KT-34959 False positive "Redundant overriding method" with different implemented/overridden signatures
• KT-35051 False positive "Remove redundant backticks" if variable inside the string and isn't followed by space
• KT-35097 False positive "Call replaceable with binary operator" on explicit 'equals' call on a platform type value
• KT-35165 "Replace 'if' with elvis operator": don't suggest if val initializer is a complex expression
• KT-35346 False positive 'Make internal' suggestion for function inside interface
• KT-35357 "Move lambda argument out of parentheses" does not preserve block comments
• KT-38349 Invalid suggestion to fold to elvis when having a var-variable
• KT-40704 False negative "Redundant semicolon" at start of line
• KT-40861 "Convert to secondary constructor" intention expected on class name
• KT-40879 False positive "Redundant 'inner' modifier" when calling another inner class with empty constructor
• KT-40985 "Remove explicit type arguments" is suggested when type has an annotation
• KT-41223 False positive "Redundant inner modifier" inspection ignores constructor arguments of object expressions
• KT-41246 False positive "Receiver parameter is never used" with anonymous function expression
• KT-41298 "Remove redundant 'with' call" intention works incorrectly with non-local returns and single-expression functions
• KT-41311 False positive "Redundant inner modifier" when deriving from a nested Java class
• KT-41499 "Convert receiver to parameter" produces code with incorrect order of generic type and function invocation in case of generic function with lambda as a parameter
• KT-41680 False positive "Redundant inner modifier" when deriving from class with non-empty constructor and value passed to it from enclosing class
• KT-42201 Add Opt-In action doesn't work if there is already OptIn annotation
• KT-42255 "Replace elvis expression with 'if' expression" intention shouldn't introduce unnecessary variable if 'error' expression is used

IDE. JS

• KT-43760 KJS: Debugging Kotlin code for Node.js runtime doesn't work

IDE. Scratch

• KT-43415 Kotlin scratch file could not be run and could lead to dead lock

JavaScript

Fixes

• KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner
• KT-39964 Throwable incorrectly implements constructor for (null, cause) args in K/JS-IR
• KT-40090 KJS: IR. Invalid behaviour for optional parameters (redundant tail undefined parameters)
• KT-40686 KJS: Uncaught ReferenceError caused by external class as type inside eventListener in init block
• KT-40771 KJS / IR: "ReferenceError: Metadata is not defined" caused by default parameter value in inner class constructor
• KT-41032 KJS / IR: "AssertionError: Assertion failed" caused by class that is delegated to inherited interface
• KT-41771 KJS / IR: IndexOutOfBoundsException "Index 0 out of bounds for length 0" caused by inline class with List in primary constructor and vararg in secondary
• KT-42025 KJS / IR: IrConstructorCallImpl: No such type argument slot: 0
• KT-42112 KJS: StackOverflowError on @JsExport in case of name clash with function with Enum parameter with star-projection
• KT-42262 KJS: break-statements without label are ignored in a when
• KT-42364 KJS: Properties of interface delegate are non-configurable
• KT-43222 KJS IR: prototype lazy initialization for top-level properties like in JVM
• KT-43313 KJS / IR: "Can't find name for declaration FUN" for secondary constructor

KMM Plugin

• KT-41677 Could not launch iOS project with custom display name
• KT-42463 Launch common tests on local JVM via run gutter
• KT-43188 NoSuchMethodError in New Module Wizard of KMM Project

Libraries

• KT-41112 Docs: add more details about bit shift operations
• KT-41356 Incorrect documentation for rangeTo function

Middle-end. IR

• KT-41765 [Native/IR] Could not resolveFakeOverride()
• KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

• KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets
• KT-42397 Reverse C interop usage of companion object reports spurious leaks

Native. C and ObjC Import

• KT-42412 [C-interop] Modality of generated property accessors is always FINAL

Native. ObjC Export

• KT-38530 Native: values() method of enum classes is not exposed to Objective-C/Swift

Native. Platform libraries

• KT-43597 Support for Xcode 12.2 SDK

Native. Platforms

• KT-43276 Support watchos_x64 target

Native. Runtime

• KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets

Native. Stdlib

• KT-42428 Inconsistent behavior of map.entries on Kotlin.Native

Reflection

• KT-34024 "KotlinReflectionInternalError: Inconsistent number of parameters" with javaMethod on suspending functions with inline class in function signature or inside the function

Tools. CLI

• KT-43406 JVM: produce deterministic jar files if -d option value is a .jar file

Tools. CLI. Native

• KT-40670 Allow to override konan.properties via CLI

Tools. Compiler Plugins

• KT-41764 KJS /IR IllegalStateException: "Symbol for public kotlin/arrayOf is unbound" with serialization plugin
• KT-42976 kotlinx.serialization + JVM IR: NPE on annotation with @SerialInfo

Tools. Gradle

• KT-38692 KaptGenerateStubs Gradle task will not clean up outputs when sources are empty and not an incremental build
• KT-40140 kotlin-android plugin eagerly creates several Gradle tasks
• KT-41295 Kotlin Gradle Plugin 1.4.20 Configuration Caching bug due to friendPath provider
• KT-42058 Support moduleName option in Kotlin Gradle plugin for JVM
• KT-43054 Implementation of AbstractKotlinTarget#buildAdhocComponentsFromKotlinVariants breaks configuration caching
• KT-43489 Incremental compilation - unable to find history files causing full recompilation

Tools. Gradle. JS

• KT-42400 Kotlin/JS: Gradle DSL: customField() is rejected in Groovy build.gradle
• KT-42462 NPM dependency declaration with Groovy interpolated string
• KT-42954 Kotlin/JS: IDE import after changing kotlin.js.externals.output.format does not re-generate externals
• KT-43535 Common webpack configuration breaks on lambda serialization in some cases

Tools. Gradle. Multiplatform

• KT-42269 Setup default dependsOn edges for Android source sets
• KT-42413 [MPP/gradle] withJava breaks build on 1.4.20-M1
• KT-43141 Gradle / Configuration cache: NPE from org.jetbrains.kotlin.gradle.tasks.KotlinCompileCommon.getKotlinOptions() on reusing configuration cache for task compileCommonMainKotlinMetadata
• KT-43329 Gradle / Configuration cache: IAE “Parameter specified as non-null is null: method KotlinMetadataTargetConfiguratorKt.isCompatibilityMetadataVariantEnabled, parameter $this$isCompatibilityMetadataVariantEnabled” on reusing configuration cache for task compileKotlinMetadata

Tools. Gradle. Native

• KT-39564 Make kotlin-native Gradle tasks Cacheable
• KT-42485 Fail on cinterop: clang_indexTranslationUnit returned 1
• KT-42550 Adding subspec dependency with git location failed
• KT-42849 Gradle / Configuration cache: tasks nativeMetadataJar, runReleaseExecutableNative, runDebugExecutableNative are unsupported and fails on reusing configuration cache
• KT-42938 CocoaPods Gradle plugin: podBuildDependencies doesn't properly report xcodebuild failures
• KT-43151 Gradle / Configuration cache: UPAE “lateinit property binary has not been initialized” on reusing configuration cache for linkDebugExecutableNative, linkDebugTestNative, linkReleaseExecutableNative tasks
• KT-40999 CocoaPods Gradle plugin: Support custom cinterop options when declaring a pod dependency.

Tools. Parcelize

• KT-41553 JVM IR, Parcelize: IrStarProjectionImpl cannot be cast to class IrTypeProjection

Tools. kapt

• KT-34340 Incremental annotation processor recompile all files (only if KAPT enabled).
• KT-36667 Kapt: Add a flag to strip kotlin.Metadata() annotations from stubs
• KT-40493 KAPT does not support aggregating annotations processors in incremental mode
• KT-40882 Kapt stub generation is non-deterministic for incremental compilation
• KT-41788 NullPointerException: Random crashes of build using gradle and kapt because of not calling Processor.init()
• KT-42182 KAPT: Does not consider generated sources for incremental compilation.

File	Sha256
kotlin-compiler-1.4.30-M1.zip	fe9f843a0ee6c0196d75ec60014b51bdf372d80ed6d6d1584f20a409ebfebb24
kotlin-native-prebuilt-linux-1.4.30-M1.tar.gz	ab291c4d8284af0c9490d4d122bac1edc5e688309361b4eb26427c35d6888152
kotlin-native-prebuilt-macos-1.4.30-M1.tar.gz	993b1a56e219f28a173ae1a07de0b1f4670ea3ee16722ac4168766053151e068
kotlin-native-prebuilt-windows-1.4.30-M1.zip	fcee3a938ad31d104fba7837f7e4ae3cb9ca2f7a35deb28f71f4c8b44a9ff945

CHANGELOG

IDE. Gradle Integration

• KT-42561 "Could not get unknown property 'sourceSets' for project" when running JVM module with included MPP module
• KT-43511 Task 'MainKt.main()' not found in root project

Libraries

• KT-43586 Source documentation: ExperimentalPathAPI misspelt
• KT-43745 replace for strings ignores case of locale characters

Native. C and ObjC Import

• KT-43265 Kotlin/Native fails to generate alias for C enum entry
• KT-43530 Kotlin/Native compilation fails with "Symbol for public kotlin/Array.size.<get-size>|-8255337774232345969[0] is unbound"

Native

• KT-43517 On Kotlin 1.4.20 we got kotlin.NotImplementedError when try compile iOS framework

Tools. Gradle. JS

• KT-43668 PackageJson task use file dependencies as is (files and directories), but only files necessary

Checksums

File	Sha256
kotlin-compiler-1.4.21.zip	46720991a716e90bfc0cf3f2c81b2bd735c14f4ea6a5064c488e04fd76e6b6c7
kotlin-native-prebuilt-linux-1.4.21.tar.gz	ae54afed3e3f65a2e3170b203679e86c78979c0c53dd0d7d7a38cf4fa8d46ca7
kotlin-native-prebuilt-macos-1.4.21.tar.gz	f3a65ea070cbfca89497a14340f1530d1ec37875efc8be9a972b6a7aefde29c0
kotlin-native-prebuilt-windows-1.4.21.zip	5359f53b01bdc5bd4fd956630e33a0ba36ea0471a8e86fe5405266d899694223

CHANGELOG

Android

• KT-42121 Deprecate Kotlin Android Extensions compiler plugin
• KT-42267 Platform declaration clash error in IDE when using kotlinx.android.parcel.Parcelize
• KT-42406 Long or infinite code analysis on simple files modification

Backend. Native

• KT-27534 Bridges to Nothing-returning methods have incorrect signature
• KT-30284 Native: Nothing? type for expression override and crash
• KT-36430 Optimize when with in range cases
• KT-38787 Missing optimization for "in range" check
• KT-39100 Make Native behaviour of property initialization consistent with JVM
• KT-39798 Override equals/hashCode in functional interface wrappers on Native
• KT-39800 equals/hashCode on adapted function references on Native
• KT-41394 Compilation failed: Backend Internal error: Exception during IR lowering
• KT-41907 Framework test segfaults on GC on watchos_x86 compiled with -opt

Compiler

New Features

• KT-21147 JEP 280: Indify String Concatenation (StringConcatFactory)
• KT-34178 Scripts should be able to access imports objects
• KT-35549 Support kotlin-android-extensions in JVM IR backend (for use with Jetpack Compose projects)
• KT-31567 Support special semantics for underscore-named catch block parameters

Performance Improvements

• KT-20571 Coroutines: Reduce number of local variables stored at suspension point
• KT-28016 Coroutine state-machines spill/unspill shall be optimized using data-flow analysis
• KT-33394 UI freezes triggered by QualifiedExpressionResolver.resolveToPackageOrClassPrefix
• KT-36814 Support optimized delegated properties in JVM_IR
• KT-36829 Optimize 'in' expressions (operator fun contains) in JVM_IR
• KT-41741 NI: "AssertionError: Empty intersection for types" with generic Java collection
• KT-42195 NI: prohibitively long compilation time for values of nested data structures with type inference
• KT-42221 Native compiler never finishes frontend phase after migrating to Kotlin 1.4.10

Fixes

• KT-11713 Refine visibility check for synthetic property with protected setter
• KT-16222 Coroutine should be clearing any internal state as soon as possible to avoid memory leaks
• KT-25519 Extra inline marks inside suspending function callable reference bytecode
• KT-33226 Object INSTANCE field not annotated with NotNull in generated bytecode
• KT-35495 FIR: forbid non-Java synthetic properties
• KT-35651 Kotlin stdlib has greater resolution priority than jars added via @file:DependsOn annotation
• KT-35716 Using @JvmOverloads in @JvmStatic functions in interface companion objects causes a ClassFormatError
• KT-35730 FIR: consider creating fake overrides for objects
• KT-36951 IllegalStateException: Expected some types: Throwing exception when there is a type parameter upper bound for itself
• KT-37321 [FIR] Support java array in type argument
• KT-37431 [FIR] Support Builder Inference
• KT-38272 FIR2IR: use lazy IR symbols for externals & fake overrides
• KT-38333 FIR: CCE on red code with assignment used as expression
• KT-38334 FIR: CCE when resolving try-as-expression
• KT-38336 FIR: NPE with corrupted numeric constant literal
• KT-38397 FIR: Exception while resolving contract definition
• KT-38444 [FIR] Invoke extension lambda with safe call
• KT-38470 FIR: ConeDefinitelyNotNullType in signature
• KT-38471 FIR: ConeIntersectionType in signature
• KT-38925 Internal error: wrong bytecode generated. (AssertionError: int type expected, but null was found in basic frames)
• KT-38989 FIR: Refine sealed classes exhaustiveness in case of sealed subclass
• KT-38992 FIR: Refine type resolution for inner classes
• KT-39000 FIR: Support smartcast after reference equality check
• KT-39005 FIR: Resolve plusAssign in a dependent context
• KT-39008 FIR: Investigate strange effect of type alias and not-nullable bound on inference
• KT-39012 FIR: Inference doesn't get through elvis to lambda parameter
• KT-39028 FIR: Strange resolution to synthetic property with implicit extension receiver while there's an explicit receiver
• KT-39032 FIR: Ambiguity in member scope of a type parameter with multiple bounds
• KT-39033 FIR: Ambiguity when calling generic overridden property
• KT-39034 FIR: Support nested extension function types
• KT-39040 FIR: Deserialize annotations from compiled Kotlin binaries
• KT-39043 FIR: Bare types incorrectly work with type aliases
• KT-39044 FIR: Add fillInStackTrace to member scope of kotlin.Throwable
• KT-39046 FIR: Implicit types in lambdas left when call argument is a type cast
• KT-39048 FIR: Inference fails with integer literal used as Comparable
• KT-39050 FIR: Type resolver doesn't see nested classes from super class of a local class
• KT-39070 FIR: Ambiguity on super calls to hashCode/equals when having super interface and class
• KT-39072 FIR: Subtyping check doesn't affect nullability of safe-call receiver
• KT-39076 FIR: Synthetic property is not a var because of @Nullable annotation on parameter
• KT-39080 FIR: Smart casts remain incorrect if lambda is present in when branch
• KT-39374 Wrong bytecode generated for suspend function call with EXACTLY_ONCE lambda capturing a variable initialized in when-subject
• KT-39621 [FIR] Support when exhaustiveness checker for java enums
• KT-40135 JVM IR does not generate restricted suspend lambdas
• KT-40382 Missing proper jvmSignature for synthesized equals/hashCode/toString in inline classes
• KT-40605 JVM IR: IndexOutOfBoundsException caused by inner class passed to generic outer class method with Nothing type argument
• KT-40664 JVM: No bounds check in optimization of ULong in UInt..UInt
• KT-40665 JVM: No resolved function check when optimizing in/contains with mismatched bound types
• KT-41014 FIR2IR: when/where/how to determine the presence of a backing field for a property
• KT-41018 FIR2IR: sort members during de/serialization
• KT-41144 False positive "Redundant spread operator" in when statement and generic vararg argument
• KT-41218 HMPP: arrayList declarations are visible both from stdlib-common and stdlib-jvm and lead to false-positive resolution ambiguity in IDE
• KT-41374 JVM / IR: NoSuchMethodError in Android project compiler caused by combination of inline classes and coroutines
• KT-41388 NI: Backend Internal error: Exception during IR lowering
• KT-41429 Inline class returned from suspend function should be boxed on resume path
• KT-41465 JVM / IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL CLASS name" caused by inline method call into multiple constructors
• KT-41484 JVM IR: support -Xemit-jvm-type-annotations
• KT-41668 JVM IR: incorrect enclosing constructor for lambdas in initializers of inner classes
• KT-41669 JVM IR: incorrect hashCode intrinsic is used in JVM target 1.8 for generic type substituted with primitive
• KT-41693 NI: Type inference in nested expression incorrectly assumes non-nullable return type of Java function, causing NullPointerException
• KT-41729 NI: UnsupportedOperationException with invalid callable reference
• KT-41761 JVM IR: CCE from backend on generating typeOf for non-reified type parameter with star projection in upper bound
• KT-41789 Missing DebugMetadata in inlined suspend lambda
• KT-41913 NI: Kotlin 1.4 type inference breaks valid code
• KT-41934 NI: a type variable for lambda parameter has been inferred to nullable type instead of not null one
• KT-42005 JVM / IR: "NullPointerException: Parameter specified as non-null is null" when toString is called on inline class with not primitive property
• KT-42450 NI: "IllegalStateException: Error type encountered: NonFixed:" with coroutines
• KT-42523 Missed DefaultImpls for interface in -jvm-default=all mode on inheriting it from interface compiled in old scheme
• KT-42524 Wrong specialization diagnostic is reported on inheriting from java interface with default with -Xjvm-default=all-compatibility
• KT-42546 HMPP: incorrect subtyping of nullable types & overload resolution ambiguity on using and expect-function declaration with nullable expect in a signature
• KT-17691 Wrong argument order in resolved call with varargs
• KT-25114 Prohibit @JvmStatic on functions in private companions
• KT-33917 Prohibit to expose anonymous types from private inline functions
• KT-35870 Forbid secondary enum class constructors which do not delegate to the primary constructor
• KT-39098 NI: parameter of anonymous function can be inferred to Any? if another parameter's type is specified
• KT-41176 NI with Gson: "ClassCastException: java.util.ArrayList cannot be cast to java.lang.Void"
• KT-41194 ClassCastException on returning Result.failure from lambda within suspend function
• KT-42438 NI: ClassCastException: cannot be cast to java.lang.Void caused by when statement in run function
• KT-42699 False positive NON_JVM_DEFAULT_OVERRIDES_JAVA_DEFAULT diagnostic in new jvm-default modes
• KT-42706 Kotlin 1.4 infers generic is Nothing instead of actual Foo class (Android project)

Docs & Examples

• KT-42318 No documentation for kotlin.js.js

IDE

New Features

• KT-20775 More kotlin kinds in new kotlin file/class menu
• KT-31331 Improve: Optimize Import should remove unused unresolved imports
• KT-31500 Smart enter: support get() clause
• KT-39231 Injection: Add receiver of kotlin.text.toPattern to standard Kotlin injections
• KT-39844 Add specific highlight for Enum class

Performance Improvements

• KT-39353 Implement EnterBetweenBracesNoCommitDelegate
• KT-39720 A lot of freezes in Kotlin project
• KT-41634 Deadlock in org.jetbrains.kotlin.idea.framework.LibraryEffectiveKindProviderImpl.getEffectiveKind
• KT-41936 Impossible to work with Kotlin 1.4 in 202 idea, idea eats all cpu

Fixes

• KT-10790 "Move statement up" for @file-targeted annotation moves package declaration to bottom of file
• KT-15262 "Generate toString()" is ignoring property if it has a getter
• KT-24352 Method separators: displayed between properties, not displayed between companion object and function
• KT-29364 "Extend selection" can't select lambda body with parameters
• KT-32403 Clickable links in annotation parameters (like in TODOs)
• KT-32409 Organizing imports should not remove imports while there are unresolved symbols
• KT-34566 Too small indent after line break for multi line strings
• KT-34587 "Move statement down" doesn't work for statement in constructor with end-of-line comment
• KT-34705 "Move statement down" for penultimate statement with end-of-line comment in constructor leads to moving comma to the end of comment
• KT-34707 "Move statement up" for last statement with end-of-line comment in constructor leads to moving comma to the end of comment
• KT-35424 FIR IDE: Kotlin project does not see stdlib
• KT-35732 URLs in String literals are not clickable
• KT-35859 Language injection doesn't work with named arguments in different position
• KT-37210 UAST: KtLightClassForSourceDeclaration.isInheritor sometimes returns the wrong result
• KT-37219 File level OptIn annotation is not recognized by the IDE
• KT-38959 IDE: False negative EXPLICIT_DELEGATION_CALL_REQUIRED, "IllegalArgumentException: Range must be inside element being annotated"
• KT-39398 Wrong import of unrelated object member is suggested for receiver
• KT-39457 Separate decompiled declarations Light implementation from LightClasses infrastructure
• KT-39899 KotlinOptimizeImportsRefactoringHelper: ISE: Attempt to modify PSI for non-committed Document
• KT-40578 UAST: write accesses to Kotlin properties should resolve to setter
• KT-41290 KotlinClassViaConstructorUSimpleReferenceExpression resolves to PsiMethod instead of PsiClass
• KT-42029 HMPP, IDE: NPE from FacetSerializationKt.getFacetPlatformByConfigurationElement on project opening
• KT-43202 On 1.4.20-RC version AS ask for xml compatibility update for EAP version of plugin
• KT-42883 No highlighting for elements marked as @Deprecated in stdlib

IDE. Android

• KT-42406 Long or infinite code analysis on simple files modification
• KT-42061 Highlighting is broken in Android activity
• KT-41930 Android Studio 4.2 cannot start after updating to 1.4.20 plugin with error: Missing essential plugin: org.jetbrains.android

IDE. Completion

• KT-26235 Kotlin methods/fields don't have icons in Java completion

IDE. Debugger

• KT-37486 Kotlin plugin keeps reference to stream debugger support classes after stream debugger plugin is disabled
• KT-38659 Evaluate Expression: toString() on variable returns error when breakpoint is in commonTest sourceset
• KT-39309 Debugger: Prolonged "Collecting data" for variables when breakpoint is inside respondHtml
• KT-39435 "Collecting data..." in debugger variables view never finishes
• KT-39717 Debugger shows "Collecting data..." forever for instances of some class
• KT-40386 Memory leak detected: 'org.jetbrains.kotlin.idea.debugger.coroutine.view.XCoroutineView'
• KT-40635 Coroutines Debugger: make IDE plugin accept coroutines 1.3.8-rc* versions as well
• KT-41505 Coroutines Debugger: “Access is allowed from event dispatch thread with IW lock only.”

IDE. Decompiler, Indexing, Stubs

• KT-28732 Stub file element types should be registered early enough
• KT-41346 IDE: "AssertionError: Stub type mismatch: USER_TYPE!=REFERENCE_EXPRESSION" with CollapsedDumpParser class from IDEA SDK
• KT-41859 File analysis never ending with kotlinx.cli (AssertionError: Stub type mismatch: TYPEALIAS!=CLASS)
• KT-41640 "Project roots have changed" happened during indexing because of org.jetbrains.kotlin.idea.core.script.ucache.ScriptClassRootsUpdater$notifyRootsChanged increases overall indexing time.
• KT-41646 "AssertionError: ContentElementType: FILE"; Code analysis never finishes on some files from my project

IDE. Gradle Integration

• KT-34271 Support pureKotlinSourceFolders for MPP projects
• KT-37106 Gradle + IDE integration: on creating source roots from Project tree IDEA creates incorrect settings
• KT-38830 addTransitiveDependenciesOnImplementedModules performance is slowing down Android Studio Gradle Sync
• KT-41703 Kotlin plugin not functional: PluginException: While loading class org.jetbrains.kotlin.idea.core.script.KotlinScriptDependenciesClassFinder

IDE. Gradle. Script

• KT-35092 “Unable to get Gradle home directory” popup and no build.gradle.kts highlighting right after creating a new project
• KT-37590 Wrong notification for precompiled build script
• KT-39523 Go to Declaration navigates to decompiled classfile instead of sources in case of jumping to Gradle plugin sources in buildSrc
• KT-39542 EA-218043: java.util.NoSuchElementException: No element of given type found (GradleBuildRootsManager)
• KT-39790 List of standalone script should be saved between IDE restarts
• KT-39910 build.gradle.kts isn't highlighted after import
• KT-39916 init.gradle.kts isn't highlighted
• KT-40243 gradle.kts: standalone script under build root isn't highlighted as standalone
• KT-41141 Gradle Kotlin DSL: "cannot access 'java.lang.Comparable'. Check your module classpath" with empty JDK in Project structure
• KT-41281 Multiple Script Definitions warning shown in git project having multiple Gradle projects

IDE. Hints

• KT-32368 Rework Inline hints settings so that they look appropriate with the new UI in 2019.3
• KT-38027 Support Code Vision feature in Kotlin
• KT-42014 ClassNotFoundException in Android Studio 4.2 after installing 1.4.20 plugin

IDE. Hints. Parameter Info

• KT-24172 Parameter info marks signature as inapplicable when using argument labels
• KT-41617 Parameter Info shows nothing inside already present type arguments of supertype
• KT-41645 Add support for mixed named arguments to parameter info popup

IDE. Inspections and Intentions

New Features

• KT-14578 Suggest "Convert lambda to reference" intention for generic extension function
• KT-19321 Warn if method with nullable return type always returns non-null
• KT-20718 Add a quick fix for "this class has no constructor" error on 'expect' annotation classes
• KT-21223 Add inspection for incomplete destructuring
• KT-22420 Intention to replace a = b with b.also { a = it }
• KT-39930 Add inspection for nullable Boolean in if condition
• KT-40016 Replace 'a.toLowerCase() == b.toLowerCase()' with 'a.equals(b, ignoreCase = true)' inspection
• KT-40283 Inspection which replaces also/apply with nested forEach to onEach
• KT-40769 Add intention to replace isBlank/isNotBlank method negation

Fixes

• KT-12222 Intention 'Convert to block body' should take nullability of overriden method into account when expression is of platform type
• KT-14395 Lambda to Reference doesn't work for generic types
• KT-15846 'Change lambda expression return type' quick fix does nothing
• KT-15944 IDEA doesn't suggest to replace deprecated get set operator functions when it used as operator
• KT-17222 "Convert reference to lambda" creates red code for method with default argument values
• KT-18125 "Wrap with let {...}" intention not available in all cases
• KT-20438 Naming convention inspections: factory functions that are named like classes are flagged
• KT-24138 Incorrect behavior in "convert reference to lambda" with new inference enabled, on function reference with default arguments
• KT-29844 "Create class from usage" should mark constructor of created class as internal if its parameters have internal visibility
• KT-30928 "Show hints for suspend calls" is too easy to enable and hard to disable
• KT-31749 "Surround with null check" produces incorrect check for 'in' expression
• KT-32963 Don't suggest java directory of a JVM source set in multiplatform project as a target for Create actual quick fix
• KT-33211 Quickfix "add parameter" for method references should infer functional type instead of KFunction
• KT-33258 "Merge 'if's" intention drops comment before nested if
• KT-34572 Convert to block body action improperly works with suppress annotations
• KT-35128 Intention Convert member to extension hides property delegate text with single line comment
• KT-35214 Intention Put parameters on one line: don't suggest if parameters has end-of-line comments
• KT-35320 False positive "Replace explicit parameter 'x' with 'it'" in 'when' expression which returns lambda
• KT-35525 False positive intention for 'run': "Convert to 'let'" when invoked without receiver
• KT-35526 Intention "Eliminate argument of 'when'" is broken for 'when' expression without 'else' branch
• KT-35805 FoldInitializerAndIfToElvis: should not add new line for multiline initializer
• KT-36051 IfThenToSafeAccessInspection: do not report if condition is SENSELESS_COMPARISON
• KT-37748 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter
• KT-37841 IllegalStateException after "add non-null asserted call" on nullable function reference
• KT-38139 False negative "Add suspend modifier" quickfix when suspend function is called in inline lambda
• KT-38267 False positive "Call on collection type may be reduced" with Java platform types: suggested to reduce 'mapNotNull' call to 'map'
• KT-38282 False positive "Remove redundant spread operator" inspection with array as class property or fun argument
• KT-38915 "Remove explicit type specification" intention should be disabled in explicit API mode
• KT-38981 "Specify return type explicitly" inspection is not reported for declaration annotated with @PublishedApi in Explicit Api mode
• KT-39026 'Specify return type explicitly' intention duplicates compiler warning in Explicit api mode
• KT-39200 False positive "Redundant qualifier name" with same-named member object and companion property
• KT-39263 False positive "Variable should be inlined" for override value in initialized object
• KT-39311 Batch quick fix name for "Change file's package" is truncated
• KT-39393 "Convert anonymous function to lambda expression" intention does not add necessary lambda type parameter for outer function
• KT-39454 False positive "Unused symbol" with private anonymous object property
• KT-39467 False negative "Move variable declaration into when" if a variable declaration is placed on a new line
• KT-39490 'Wrap with ?.let' quickfix put the receiver in let lambda
• KT-39552 Merge 'if's intention drops comment after nested if
• KT-39604 "Package directive doesn't match file location" quick fix does not insert a space between keyword package and the package name
• KT-39772 "Redundant 'Unit'" should support lambdas
• KT-40215 "Create abstract function" quick fix suggested even though surrounding class is non-abstract
• KT-40448 "Convert call chain into sequence": support functions added in Kotlin 1.4
• KT-40558 False positive "Move to class body" intention on data class constructor property
• KT-41338 False positive "Redundant 'asSequence' call" when Map.Entry properties are used.
• KT-41615 "Unused equals expression" inspection: highlight whole expression with yellow background
• KT-43037 Disable "Incomplete destructuring declaration" in 1.4.20

IDE. J2K

• KT-20421 J2K: SUPERTYPE_NOT_INITIALIZED for object extending base class
• KT-37298 J2K: implicit widening conversion for whole argument expression is transformed to cast on subexpression
• KT-38879 J2K loses class annotations when converting class to object
• KT-39149 J2K fails with augmented assignment operators when multiplying int by a non-int
• KT-40359 J2K: Conversion of invalid octal numbers throws NumberFormatException
• KT-40363 J2K: Converting HEX integer literal in for-loop throws NumberFormatException

IDE. JS

• KT-39319 KJS: Support debugging through new Intellij 202 API
• KT-41328 KJS / Gradle: explicitApi mode doesn't work

IDE. KDoc

• KT-17926 IDE should show documentation for a class if the constructor has no docs.
• KT-19069 KDoc: show default argument values
• KT-37132 Redundant @NotNull annotation in a Quick Documentation pop-up

IDE. Misc

• KT-39327 Get rid of usages of internal classes ModuleOrderEntryImpl and LibraryImpl
• KT-40455 Improve support for EditorConfig

IDE. Navigation

• KT-24616 Find usages fails to find setter usage
• KT-38762 "Cannot access 'java.io.Serializable' which is a supertype of 'kotlin.Int'" brokes navigation to constructor parameter declaration
• KT-39558 Call Hierarchy shows references from KDoc
• KT-40788 "Find usages" on Java getter overridden in Kotlin doesn't find synthetic property usage when it is called without base declaration
• KT-40960 Unable to find usages in java of Kotlin constructor in library when sources is attached.

IDE. Project View

• KT-37528 'Add Kotlin File/Class' suggests file before class

IDE. Refactorings

• KT-19744 "Change Signature" is not available on constructor keyword in primary constructor
• KT-22170 "Change Signature" ignores Java usages of methods marked with @JvmStatic
• KT-37517 Invalid qualified name on copy-paste in build.gradle.kts

IDE. Run Configurations

• KT-24463 MPP, Intellij runner: Run does not add resource directory to classpath
• KT-36370 Hide run gutter icons for not yet implemented targets in multiplatform projects
• KT-39788 MPP, Gradle runner: Run does not add resource directory to classpath on project reopen without Gradle sync

IDE. Scratch

• KT-40557 IDE / Scratch: .kt files are treated as Kotlin scratches, opening fails

IDE. Script

• KT-35825 Custom kotlin scripts have no project import suggestions in sub modules.
• KT-39796 Performance of KotlinScriptDependenciesClassFinder
• KT-41622 IDE: Kotlin scripting support can't find context class from same project
• KT-41905 IDE / Script: FilePathPattern parameter in @KotlinScript annotation is not reflected correctly in Pattern / Extension
• KT-42206 Cannot load script definitions using org.jetbrains.kotlin.jsr223.ScriptDefinitionForExtensionAndIdeConsoleRootsSource

IDE. Tests Support

• KT-28854 Run/Debug configurations: "Redirect input from" option is not available for Kotlin apps
• KT-36909 IDE attempts to run non-JVM tests launched from context menu as JVM ones
• KT-37799 Don't show a target choice in context menu for a test launched on specific platform

IDE. Wizards

• KT-37965 New Project wizard 1.4+: adding JUnit5 test library add dependency to runner
• KT-40527 Node.JS application template in New Project Wizard
• KT-40874 Open new project wizard help page in browser when clicking help button in new project wizard
• KT-41417 Add react template to new project wizard
• KT-41418 Wizard: Support KJS compiler choice
• KT-41958 New project wizard: Backend/Console applications template with Groovy DSL missing compileTestKotlin block
• KT-42372 Rrename test classes in wizard template to avoid name clashing

JavaScript

• KT-38136 JS IR BE: add an ability to generate separate js files for each module and maybe each library
• KT-38868 [MPP / JS / IR] IllegalStateException: "Serializable class must have single primary constructor" for expect class without primary constructor with @Serializable annotation
• KT-39088 [ KJS / IR ] IllegalStateException: Concrete fake override IrBasedFunctionHandle
• KT-39367 KJS: .d.ts generation not working for objects
• KT-39378 KJS / IR: "IllegalStateException: Operation is unsupported" with binaries.executable() and external function inside for loop with Iterator as return type
• KT-41275 KJS / IR: "IllegalStateException: Can't find name for declaration FUN" caused by default value in constructor parameter
• KT-41627 KJS / IR / Serialization: IllegalStateException: Serializable class must have single primary constructor
• KT-37829 Kotlin JS IR: "Properties without fields are not supported" for companion objects
• KT-39740 KJS / IR: Can't use Serializable and JsExport annotations at the same time

KMM Plugin

• KT-41522 KMM: exceptions for Mobile Multiplatform plugin are suggested to report to Google, not JetBrains
• KT-42065 [KMM plugin] iOS apps fail to launch on iOS simulator with Xcode 12

Libraries

• KT-41799 String.replace performance improvements
• KT-43306 Deprecate createTempFile and createTempDir functions in kotlin.io
• KT-19192 Provide file system extensions/APIs based on java.nio.file.Path
• KT-41837 Remove @ExperimentalStdlibApi from CancellationException

Middle-end. IR

• KT-40193 IR: pluginContext.referenceClass() is not resolving typealias
• KT-41181 Kotlin/Native 1.4.0 compiler fails on data class with >120 fields

Native. C and ObjC Import

• KT-41250 [C-interop] Stubs for C functions without parameter names should have non-stable names
• KT-41639 Use LazyIR for enums and structs from cached libraries
• KT-41655 Native: "type cnames.structs.S of return value is not supported here: doesn't correspond to any C type" when accessing forward-declared-struct-typed C global variable

Native. ObjC Export

• KT-38641 Kotlin-Multiplatform: Objective-C description method name collision in Swift
• KT-39206 New line characters in @Deprecated annotation cause syntax error in Kotlin/native exported header

Native. Platform libraries

• KT-42191 Support for Xcode 12

Native. Runtime. Memory

• KT-42275 "Memory.cpp:1605: runtime assert: Recursive GC is disallowed" sometimes when using Kotlin from Swift deinit

Native. Stdlib

• KT-39145 MutableData append method

Tools. Android Extensions

• KT-42342 Build fails with java.lang.RuntimeException: Duplicate class found in modules on checkDebug(Release)DuplicateClasses task when both kotlin-parcelize and kotlin-android-extensions plugins are applied

Tools. CLI

• KT-35111 Extend CLI compilers help with link to online docs
• KT-41916 Add JVM target bytecode version 15

Tools. Commonizer

• KT-41220 [Commonizer] Short-circuit type aliases
• KT-41247 [Commonizer] Missed supertypes in commonized class
• KT-41643 Commonizer exception for targets [ios_x64], [macos_x64]
• KT-42574 HMPP: unresolved platform.* imports in nativeMain source set

Tools. Compiler Plugins

• KT-36329 Provide diagnostic in kotlinx.serialization when custom serializer mismatches property type
• KT-40030 Move the Parcelize functionality out of the Android Extensions plugin

Tools. Gradle

• KT-33908 Make Kotlin Gradle plugin compatible with the Gradle configuration cache
• KT-35341 KotlinCompile: Symlinked friend paths are no longer supported

Tools. Gradle. JS

New Features

• KT-35330 Allow to customise generated package.json
• KT-39825 Provide single point of Webpack configuration in Gradle script
• KT-41054 Support Yarn resolutions
• KT-41340 Add flag to suppress kotlin2js deprecation message
• KT-41566 Kotlin/JS: Support JavaScript Library distribution
• KT-42222 KJS / Gradle: "Cannot find package@version in yarn.lock" when npm dependencies of one package but with different version are used in project
• KT-42339 Support dukat binaries generation

Fixes

• KT-39515 package.json is regenerated without a visible reason
• KT-39838 Kotlin/JS Gradle tooling: NPM dependencies of different kinds with different versions of the same package fail with "Cannot find package@version in yarn.lock"
• KT-39995 Collect statistic about generateExternals feature
• KT-40087 Kotlin/JS, IR backend: browserRun: update in continuous mode fails: "ENOENT: no such file or directory" referring output .js
• KT-40159 Implement workaround / fix for webpack's "window is not defined"
• KT-40178 Browser run task prints output in TeamCity format
• KT-40201 Kotlin/JS: Gradle: public package.json has empty devDependencies {}
• KT-40202 Kotlin/JS: Gradle: NPM version range operators are written into package.json as escape sequences
• KT-40342 [Gradle, JS, Maven] "Cannot find module" generating fake NPM module from Maven dependendency
• KT-40462 Collect statistic about usages of kotlin.js.generate.executable.default option
• KT-40753 Type script definition file is not referenced as types in the package.json
• KT-40812 Node.JS run working directory
• KT-40865 KJS / Gradle: Registering a task with a type that directly extends AbstractTask has been deprecated
• KT-40986 KJS / Gradle: BuildOperationQueueFailure when two different versions of js library are used as dependencies
• KT-41125 Bump NPM versions in 1.4.20
• KT-41286 KJS / Gradle: args order in runTask is changed in 1.4.0
• KT-41475 KJS / Gradle: debug mode doesn't support custom launchers in karma config
• KT-41662 Kotlin/JS: with CSS support mode == "extract" browser test fails even without CSS usage: "Error in config file!"
• KT-42494 KJS / Gradle: "Configuration cache state could not be cached" caused by Gradle configuration cache

Tools. Gradle. Native

• KT-39764 Assertions are disabled when running K/N compiler in Gradle process
• KT-39999 Cocoapods plugin's dummy header cannot be compiled
• KT-40999 CocoaPods Gradle plugin: Support custom cinterop options when declaring a pod dependency.
• KT-41367 CocoaPods Gradle plugin: support git repository dependency
• KT-41844 Kotlin 1.4.10 gradle configuration error with cocoapods using multiple multiplatform modules
• KT-42531 Gradle task "podGenIos" fails if a Pod with a static library is added.

Tools. Incremental Compile

• KT-37446 Incremental analysis for Java sources fails when run on JDK 11

Tools. Parcelize

• KT-39981 Android parcel 'java.lang.VerifyError: Bad return type'
• KT-42267 Platform declaration clash error in IDE when using kotlinx.android.parcel.Parcelize
• KT-42958 False positive IDE error on classes with kotlinx.parcelize.Parcelize on project initial import
• KT-43290 Typo in error message for ErrorsParcelize.DEPRECATED_ANNOTATION - kotlin.parcelize instead of kotlinx.parcelize
• KT-43291 Diagnostic deprecation messages should not be shown in case kotlin-android-extensions plugin is applied

Tools. Scripts

• KT-37987 Kotlin script: hyphen arguments not forwarded to script
• KT-38404 Scripting API: Provide Location of Annotation Usage
• KT-39502 Scripting: reverse order of Severity enum so that ERROR > INFO
• KT-42335 No "caused by" info about an exception that thrown in Kotlin Script

Tools. kapt

• KT-25960 Interfaces annotated with JvmDefault has wrong modifiers during annotation processing
• KT-37732 Kapt task is broken after update to 1.3.70/1.3.71
• KT-42915 Kapt generates invalid stubs for static methods in interfaces in Kotlin 1.4.20-M2

Checksums

File	Sha256
kotlin-compiler-1.4.20.zip	11db93a4d6789e3406c7f60b9f267eba26d6483dcd771eff9f85bb7e9837011f
kotlin-native-prebuilt-linux-1.4.20.tar.gz	b65cc8b1510b21f23587c5457a74dc9e7cd4a6294fa38c00d688837f8d52d554
kotlin-native-prebuilt-macos-1.4.20.tar.gz	9040ab932f01696b91608a6fd46f78b2f5f399d3a1132a344af6d83c7570f1a9
kotlin-native-prebuilt-windows-1.4.20.zip	80c26b36b358a1a2fdba184a354a758b00b6f27e719dc2086cf5d287f92f12a3