ChangeLog.md

1.6.10

Android

• KT-49798 [MPP] [Android] AGP 7.1.0+ android target publications leak 'AgpVersionAttr' attribute

Compiler

Performance Improvements

• KT-49821 Optimize LazyClassMemberScope#getContributedDescriptors: use nameFilter

Fixes

• KT-49833 java.lang.NullPointerException caused by accidental newline in package directive
• KT-49838 Type inference fails on 1.6.0: Cannot use 'CapturedType(*)' as reified type parameter
• KT-49752 Regression in method return type inference: "IllegalStateException: Expected some types"
• KT-49876 Kotlin/Native: cross-compilation of Linux static library is broken in Windows in 1.6.0
• KT-49792 Atomicfu: "standalone invocation of kotlinx.atomicfu.AtomicInt::compareAndSet that was not traced to previous field load" with suspend function
• KT-49834 Coroutine method transformer generates invalid locals table.
• KT-49441 Support friend modules in Kotlin Native
• KT-49248 K/N: Symbol with IrSimpleFunctionSymbolImpl is unbound after 1.5.30
• KT-49651 Inconsistent compiler APIs for repeatable annotations
• KT-49168 JVM IR: IndexOutOfBoundsException with fun interface + suspend function as SAM method
• KT-49573 No annotated types, compiler emits "Annotated types are not supported in typeOf"
• KT-47192 Build Fake Overrides for internal members of classes from friend module
• KT-48673 IR: IllegalStateException for usage of internal member declared in a superclass in another module

JavaScript

• KT-47811 KJS / IR: "ClassCastException" when using suspend function in console.log

Language Design

• KT-49868 Support language version 1.3 in Kotlin 1.6.10

Libraries

• KT-50173 Different behavior of Regex escapeReplacement function in JVM and JS

Tools. Android Extensions

• KT-49799 NullPointerException when using kotlin-android-extensions synthetic after update to Kotlin 1.6.0

Tools. Compiler Plugins

• KT-50005 jvm-abi-gen plugin: do not change the declaration order in generated jars
• KT-49726 JVM/IR: "IllegalArgumentException: Null argument in ExpressionCodegen for parameter VALUE_PARAMETER": Serialization with sealed class as type parameter

Tools. Gradle

• KT-49835 Android consumers can't resolve Android debug variants of published MPP libraries published with Kotlin 1.6.0 & Gradle 7.0+
• KT-49910 Incremental compilation speed regression in 1.6.0 for Android projects

Tools. Gradle. JS

• KT-49109 KJS / Gradle: Configuration failed: Could not find node-14.17.0-darwin-arm64.tar.gz (org.nodejs:node:14.17.0)
• KT-50135 KJS: Problem with Yarn install with scripts on Windows
• KT-34014 Gradle, JS: Ability to persist / reuse yarn.lock
• KT-49505 KJS / IR: Installation of NPM dependencies should be with ignore-scripts

Tools. Gradle. Native

• KT-49931 Kotlin Multiplatform Fails in Windows after 1.6.0 upgrade - Cannot run program "pod"
• KT-49771 podInstall task is not executed after adding a pod dependency to the shared module

Tools. Incremental Compile

• KT-49822 Incremental compilation state is modified when the build fails in Kotlin 1.6
• KT-49340 "IllegalStateException: @NotNull method org/jetbrains/kotlin/com/intellij/openapi/application/AsyncExecutionService.getService must not return null" with Anvil plugin and incremental compilation

1.6.10-RC

Android

• KT-49798 [MPP] [Android] AGP 7.1.0+ android target publications leak 'AgpVersionAttr' attribute

Compiler

Performance Improvements

• KT-49821 Optimize LazyClassMemberScope#getContributedDescriptors: use nameFilter

Fixes

• KT-49838 Type inference fails on 1.6.0: Cannot use 'CapturedType(*)' as reified type parameter
• KT-49752 Regression in method return type inference: "IllegalStateException: Expected some types"
• KT-49876 Kotlin/Native: cross-compilation of Linux static library is broken in Windows in 1.6.0
• KT-49833 java.lang.NullPointerException caused by accidental newline in package directive
• KT-49792 Atomicfu: "standalone invocation of kotlinx.atomicfu.AtomicInt::compareAndSet that was not traced to previous field load" with suspend function
• KT-49834 Coroutine method transformer generates invalid locals table.
• KT-49441 Support friend modules in Kotlin Native
• KT-49248 K/N: Symbol with IrSimpleFunctionSymbolImpl is unbound after 1.5.30
• KT-49651 Inconsistent compiler APIs for repeatable annotations
• KT-49168 JVM IR: IndexOutOfBoundsException with fun interface + suspend function as SAM method
• KT-49573 No annotated types, compiler emits "Annotated types are not supported in typeOf"
• KT-47192 Build Fake Overrides for internal members of classes from friend module
• KT-48673 IR: IllegalStateException for usage of internal member declared in a superclass in another module

JavaScript

• KT-47811 KJS / IR: "ClassCastException" when using suspend function in console.log

Tools. Android Extensions

• KT-49799 NullPointerException when using kotlin-android-extensions synthetic after update to Kotlin 1.6.0

Tools. Compiler Plugins

• KT-50005 jvm-abi-gen plugin: do not change the declaration order in generated jars
• KT-49726 JVM/IR: "IllegalArgumentException: Null argument in ExpressionCodegen for parameter VALUE_PARAMETER": Serialization with sealed class as type parameter

Tools. Gradle

• KT-49835 Android consumers can't resolve Android debug variants of published MPP libraries published with Kotlin 1.6.0 & Gradle 7.0+
• KT-49910 Incremental compilation speed regression in 1.6.0 for Android projects

Tools. Gradle. JS

• KT-34014 Gradle, JS: Ability to persist / reuse yarn.lock
• KT-49505 KJS / IR: Installation of NPM dependencies should be with ignore-scripts

Tools. Gradle. Native

• KT-49931 Kotlin Multiplatform Fails in Windows after 1.6.0 upgrade - Cannot run program "pod"
• KT-49771 podInstall task is not executed after adding a pod dependency to the shared module

Tools. Incremental Compile

• KT-49822 Incremental compilation state is modified when the build fails in Kotlin 1.6
• KT-49340 "IllegalStateException: @NotNull method org/jetbrains/kotlin/com/intellij/openapi/application/AsyncExecutionService.getService must not return null" with Anvil plugin and incremental compilation

1.6.0

Android

• KT-48019 Bundle Kotlin Tooling Metadata into apk artifacts
• KT-47733 JVM / IR: Android Synthetic don't generate _findCachedViewById function

Compiler

New Features

• KT-47984 In-place arguments inlining for @InlineOnly functions
• KT-12794 Allow runtime retention repeatable annotations when compiling under Java 8
• KT-43714 Support annotations on class type parameters (AnnotationTarget.TYPE_PARAMETER)
• KT-45949 Kotlin/Native: Improve bound check elimination
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-48194 Try to resolve calls where we don't have enough type information, using the builder inference despite the presence of the annotation
• KT-47736 Support conversion from regular functional types to suspending ones in JVM IR
• KT-39055 Support property delegate created via synthetic method instead of field

Performance Improvements

• KT-45185 FIR2IR: get rid of IrBuiltIns usages
• KT-47918 JVM / IR: Performance degradation with const-bound for-cycles
• KT-33835 Bytecode including unnecessary null checks for safe calls where left-hand side is non-nullable
• KT-41510 Compilation of kotlin html DSL is still too slow
• KT-48211 We spend a lot of time in ExpectActual declaration checker when there is very small amount of actual/expect declaration
• KT-39054 Optimize delegated properties which call get/set on the given KProperty instance on JVM
• KT-46615 Don't generate nullability assertions in methods for directly invoked lambdas

Fixes

• KT-49613 JVM / IR: "Exception during IR lowering" with java fun interface and it's non-trivial usage
• KT-49548 "ClassCastException: java.util.ArrayList$Itr cannot be cast to kotlin.collections.IntIterator" with Iterable inside let
• KT-22562 Deprecate calls to "suspend" named functions with single dangling lambda argument
• KT-47120 JVM IR: NoClassDefFoundError when there are an extension and a regular function with the same name
• KT-49477 Has ran into recursion problem with two interdependant delegates
• KT-49442 ClassCastException on reporting [EXPOSED_FROM_PRIVATE_IN_FILE] Deprecation: private-in-file class should not expose 'private-in-class'
• KT-49371 JVM / IR: "NoSuchMethodError" with multiple inheritance
• KT-44843 PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression" with delegate who has name or parameter with the same name as a property
• KT-49294 Turning FlowCollector into 'fun interface' leads to AbstractMethodError
• KT-18282 Companion object referencing it's own method during construction compiles successfully but fails at runtime with VerifyError
• KT-25289 Prohibit access to class members in the super constructor call of its companion and nested object
• KT-32753 Prohibit @JvmField on property in primary constructor that overrides interface property
• KT-43433 Suspend conversion is disabled message in cases where it is not supported and quickfix to update language version is suggested
• KT-49399 Building repeatable annotation with Container nested class fails with ISE: "Repeatable annotation class should have a container generated"
• KT-49209 Default upper bound for type variables should be non-null
• KT-49335 NPE in RepeatedAnnotationLowering.wrapAnnotationEntriesInContainer when using @Repeatable annotation from different file
• KT-48876 java.lang.UnsupportedOperationException: org.jetbrains.kotlin.ir.expressions.impl.IrReturnableBlockImpl@4a729df2
• KT-48131 IAE "Repeatable annotation container value must be a class reference" on using Kotlin-repeatable annotation from dependency
• KT-49322 Postpone promoting warnings to errors for ProperTypeInferenceConstraintsProcessing feature
• KT-49285 Exception on nested builder inference calls
• KT-49101 IllegalArgumentException: ClassicTypeSystemContext couldn't handle: Captured(out Number)
• KT-41378 Compilation failed: Deserializer for declaration public kotlinx.coroutines/SingleThreadDispatcher|null[0] is not found
• KT-47285 IR deserialization exception when dependency KLIB has class instead of typealias
• KT-46697 IllegalStateException: IrTypeAliasSymbol expected: Unbound public symbol for public kotlinx.coroutines/CancellationException|null[0] compiling KMM module for Kotlin/Native with Kotlin 1.5
• KT-36399 Gradually support TYPE_USE nullability annotations read from class-files
• KT-11454 Load annotations on TYPE_USE/TYPE_PARAMETER positions from Java class-files
• KT-18768 @Notnull annotation from Java does not work with varargs
• KT-24392 Nullability of Java arrays is read incorrectly if @Nullable annotation has both targets TYPE_USE and VALUE_PARAMETER
• KT-48157 FIR: incorrect resolve with built-in names in use
• KT-46409 FIR: erroneous resolve to qualifier instead of extension
• KT-44566 FirConflictsChecker do not check for conflicting overloads across multiple files
• KT-37318 FIR: Discuss treating flexible bounded constraints in inference
• KT-45989 FIR: wrong callable reference type inferred
• KT-46058 [FIR] Remove state from some checkers
• KT-45973 FIR: wrong projection type inferred
• KT-43083 [FIR] False positive 'HIDDEN' on internal
• KT-48794 Breaking change in 1.5.30: Builder inference lambda contains inapplicable calls so {1} cant be inferred
• KT-46727 Report warning on contravariant usages of star projected argument from Java
• KT-40668 FIR: Ambiguity on qualifier when having multiple different same-named objects in near scopes
• KT-37081 [FIR] errors NO_ELSE_IN_WHEN and INCOMPATIBLE_TYPES absence
• KT-48162 NON_VARARG_SPREAD isn't reported on *toTypedArray() call
• KT-45118 ClassCastException caused by parent and child class in if-else
• KT-47605 Kotlin/Native: switch to LLD linker for MinGW targets
• KT-48912 K/N Symbol with IrSimpleFunctionSymbolImpl is unbound and JS Validation failed in file shaders.kt
• KT-44436 Support default not null annotations to enhance T into T!!
• KT-49190 Increase stub versions
• KT-48261 "overload resolution ambiguity" for JSpecify+jsr305-annotated Java List implementation
• KT-48778 -Xtype-enhancement-improvements-strict-mode not respecting @NonNull annotation for property accesses?
• KT-48606 [1.6] Instantiated annotations do not implement hashCode correctly/consistently
• KT-49157 Tail-call optimization miss with cast to type parameter
• KT-46437 NI: "Throwable: Resolution error of this type shouldn't occur for resolve if as a call" caused by reflectively accessing private property inside "if/else" or "when" expression
• KT-48590 IllegalArgumentException: ClassicTypeSystemContext couldn't handle: Captured(*) reified type class reference
• KT-48633 Can't infer builder inference's type argument across local class
• KT-49136 JVM IR: NPE with safe call chain and property set to null by reflection
• KT-48570 OptIn marker should not spread from class to its members
• KT-48928 Prohibit using old JVM backend with language version >= 1.6
• KT-41978 NI: Kotlin fails to infer type of function argument
• KT-48101 Smart cast on base class property is impossible if base class is from another module
• KT-48732 JVM / IR: MalformedParameterizedTypeException is thrown when a Spring Bean of suspending function type is registered
• KT-47841 Turning LV to 1.6 breaks some diagnostics based on jspecify annotations
• KT-48498 JVM IR: IllegalAccessError with inline function call and property delegation from different module
• KT-48319 JVM / IR: AssertionError: FUN caused by suspend lambda inside anonymous function
• KT-48835 Psi2ir: vararg parameter value is lost when translating adapted function reference to base class member
• KT-46908 JVM / IR: do not wrap fun interface implementation into another SAM adapter if it inherits from a functional type
• KT-48927 JVM IR: "VerifyError: Bad invokespecial instruction: current class isn't assignable to reference class" when up-casting and read a base class's private property that has a custom getter in the base class's public function
• KT-48992 Postpone migration to new operator resolution scheme for integer literals
• KT-48290 Type bounds warning based on Java annotations not issues with language level 1.6
• KT-47920 There is no warning on violated nullability of type parameter in accordance with java nullability annotation
• KT-41664 Remove the "runtime JAR files in the classpath should have the same version" warning
• KT-48851 Keep using warn mode for jspecify in 1.6
• KT-46829 IR: NullPointerException caused by setting scoped generic extension var
• KT-42972 Forbid protected constructor calls from public inline functions
• KT-45378 Prohibit super calls in public-api inline functions
• KT-48515 JSpecify: If a class has a @Nullable type-parameter bound, Kotlin should still treat unbounded wildcards like platform types
• KT-48825 JVM IR: NPE with delegated property "by this" to base class
• KT-48535 Make EXPERIMENTAL_ANNOTATION_ON_OVERRIDE warning
• KT-47928 Prohibit declarations of repeatable annotation classes whose container annotation violates JLS
• KT-47971 Report error on declaration of a repeatable annotation class with nested class named Container
• KT-48478 JVM IR: Coroutines 1.5.1 + Kotlin 1.5.30 - ClassCastException: CompletedContinuation cannot be cast to DispatchedContinuation
• KT-48523 Kotlin/Native: cross-compilation from Linux to MinGW not working when platform.posix is used
• KT-48671 JVM / IR: "AssertionError: Primitive array expected: CLASS IR_EXTERNAL_DECLARATION_STUB CLASS"
• KT-46181 JVM IR: private @JvmStatic function is generated in the outer class instead of companion object, which breaks existing calls via JNI or reflection (e.g. JUnit @MethodSource)
• KT-48736 JVM IR: assert in SyntheticAccessorLowering when inline function attempts to access package-private field from Java
• KT-48653 Warnings on non-exhaustive when statements missing in some cases with 1.6
• KT-48394 JVM: Invalid locals caused by unboxing bytecode optimization
• KT-20542 IllegalAccessError on calling private function with default parameters from internal inline function used in another package
• KT-48331 JVM / IR: "VerifyError: Bad access to protected data in invokevirtual" when a sealed class uses another sealed class in its same hierarchy level as a constructor parameter
• KT-48380 kotlin.RuntimeException: Unexpected receiver type
• KT-47855 Kotlin/Native: compilation fails due to Escape Analysis
• KT-48291 False positive [ACTUAL_MISSING] Declaration must be marked with 'actual' when implementing actual interface
• KT-48445 "IAE: Top level call context should not be null to analyze coroutine-lambda" when compiling Kotlin with language version 1.6
• KT-48618 Enable by default "suspend conversion" feature in 1.6
• KT-47638 Drop EXPERIMENTAL_IS_NOT_ENABLED diagnostic
• KT-48589 KotlinTypeRefiner is lost, leading to TYPE_MISMATCH and OVERLOAD_RESOLUTION_AMBIGUITY issues with MPP projects
• KT-48615 Inconsistent behavior with integer literals overflow (Implementation)
• KT-47937 Implement deprecation of computing constant values of complex boolean expressions in when condition branches and conditions of loops
• KT-48391 JVM / IR: "AssertionError: SyntheticAccessorLowering should not attempt to modify other files!" caused by class which inherits interface which has default function with default argument from companion const val
• KT-48552 Kotlin/Native: iosArm64 debug build fails in 1.6.0-M1-139
• KT-46182 Native: prohibit using dots in identifiers
• KT-46230 JVM IR: "IllegalArgumentException: Null argument in ExpressionCodegen for parameter VALUE_PARAMETER MOVED_DISPATCH_RECEIVER" with value class overriding function with default parameter
• KT-48302 FIR: Investigate not-null assertion on generic Java method
• KT-48350 JVM IR: NPE from LocalDeclarationsLowering on property reference with field from outer class used as receiver (1.6.0-M1 regression)
• KT-48500 AE: "Last parameter type of suspend function must be Continuation, but it is kotlin.coroutines.experimental.Continuation" for kotlin-stdlib-common library
• KT-48469 Problem with properties lazy initialization while using kotlinx.serialization plugin
• KT-48432 Regression in IntRange.contains (and probably other ranges too) when used in-place
• KT-44855 "AssertionError: SyntheticAccessorLowering should not attempt to modify other files" on smart cast of protected field owner
• KT-47542 Incorrect ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED after migration to 1.6 on class indirectly extending RuntimeException
• KT-48166 FIR: incorrect common supertype for PSI elements hierarchy
• KT-47499 JVM / IR: java.lang.VerifyError: Bad access to protected data in invokevirtual when trying to clone the result of lambda invocation that is "this" in an extension function
• KT-46451 JVM Debugging: stepping on finally block end brace line before stepping into finally code
• KT-48329 It's impossible to infer a type variables based on several builder inference lambdas
• KT-48193 Don't use the builder inference for calls which can be resolved without it
• KT-46450 JVM Debugging: some break statements in catch blocks have no line numbers and you cannot set breakpoints on them
• KT-48298 FIR: incorrect deserialized annotations in back-end
• KT-48234 FIR: false positive NON_INTERNAL_PUBLISHED_API for primary constructor property
• KT-48174 IR interpreter: unsupported compile-time call
• KT-48158 FIR: false positive ASSIGNMENT_TYPE_MISMATCH as a result of wrong type inference around callable references
• KT-48109 FIR: incorrect type inference for generic argument of intersection type
• KT-48161 FIR: false positive ARGUMENT_TYPE_MISMATCH for bounded type parameter VS Java not-null
• KT-48159 FIR: erroneous scope order during type resolve of constructor return type
• KT-48165 FIR: false positive "initializer should be a constant value" on String.length
• KT-48175 FIR: exception for JvmField on local class property
• KT-48164 FIR: false positive OVERRIDING_FINAL_MEMBER in enum entry
• KT-48116 FIR: false positive NOT_A_LOOP_LABEL
• KT-48102 FIR: false positive ABSTRACT_MEMBER_NOT_IMPLEMENTED with mapped stdlib functions
• KT-47911 Native compiler on ios_arm64 target generates movi.2d instructions, which are mishandled by Apple hardware
• KT-48105 FIR: generic/specific callable reference ambiguity
• KT-14392 Repeated annotation with use site target is not detected for getter and setter
• KT-47493 Missed frontend diagnostic in try/catch
• KT-48058 "No type for expression" compiler exception on calls with unused lambda
• KT-47597 JVM IR: if statement doesn't eval correctly on 1.5.20 possible nullable type differences.
• KT-47922 False negative type mismatch on empty when as last statement of lambda
• KT-34594 Do not generate fake debugger variables initialization for @InlineOnly functions
• KT-47749 Incorrect scope of a local variable inside the coroutine
• KT-47527 JVM / IR ClassCastException: "kotlin.Unit cannot be cast to java.lang.String"
• KT-47840 JVM / IR: "IllegalStateException: No mapping for symbol: VALUE_PARAMETER name: x" in nested local functions with recursive calls
• KT-46448 JVM Debugging: Locals in finally blocks not always duplicated when the finally block is
• KT-47716 JVM / IR: NoSuchMethodError when trying to get MAX_VALUE from ULong in non-trivial try/finally context
• KT-47762 JVM / IR: Properties with the same signatures in inline class and its companion object crashes the compiler with NullPointerException
• KT-47741 JVM / IR: VerifyError: Bad type on operand stack with iterator and invoking method reference to IntIterator
• KT-43696 ClassFormatError on @JvmStatic external fun in interface companion object
• KT-47715 JVM / IR, R8: External getter cannot be represented in dex format
• KT-47684 Add warning on is checks which are always false
• KT-47685 False positive CAST_NEVER_SUCCEEDS on variable of intersection type
• KT-32188 NI: False positive "This cast can never succeed"
• KT-35687 NI: Poor cast can never succeed [CAST_NEVER_SUCCEEDS]
• KT-41331 False negative USELESS_IS_CHECK with null
• KT-47609 JVM IR: "AssertionError: Unexpected number of type arguments" when compiling an extension property with annotation and it extends a value class with a generic parameter
• KT-47413 FIR: Rework FirDelegatedScope
• KT-47492 Illegal use of DUP

Docs & Examples

• KT-48534 Wrong compiler argument for RequiresOptIn

IDE

• KT-48604 MISSING_DEPENDENCY_CLASS in test source sets with kotlin.mpp.enableGranularSourceSetsMetadata=true

IDE. Debugger

• KT-47970 AE: "Either library or explicit name have to be provided " in IR debugger tests

IDE. Gradle Integration

• KT-46273 MPP: Don't fail import for case of missed platform in source set structure
• KT-48823 Improve error reporting on import when configuration phase in Gradle failed
• KT-48504 MPP: UninitializedPropertyAccessException on import if new hierarchical mpp flag conflicts with other flags
• KT-47463 MPP: Import fails with Task 'runCommonizer' not found in root project if Kotlin configured only in module

IDE. Multiplatform

• KT-47604 kotlin-stdlib-common leaks into dependencies of Android-specific source sets

JavaScript

• KT-43783 KJS / IR: companion object and nested objects are not exported
• KT-47524 KJS / IR: Treat protected members as part of exported API
• KT-48132 KJS / IR: "IllegalStateException" when interface methods don't have default implementation
• KT-47700 Support instantiation of annotation classes on JS
• KT-48317 KJS / IR: "TypeError: ... is not a function" on running code with suspend function inheritors
• KT-48344 KJS / IR: incorrect call with vararg argument from suspend function
• KT-47751 Kotlin/JS: IR + IC: "argument has no effect without source map" warnings on build

Libraries

New Features

• KT-46423 infix extension fun Comparable.compareTo
• KT-47421 Stabilize collection builders
• KT-48584 Introduce JVM readln() and readlnOrNull() top-level functions

Performance Improvements

• KT-45438 Remove brittle ‘contains’ optimization in minus/removeAll/retainAll

Fixes

• KT-28378 Different behavior of Regex replace function in JVM and JS when replacement string contains group reference
• KT-46785 Get rid of !! after readLine() in the standard library
• KT-46784 Stabilize Duration API in the standard library
• KT-46229 Bring back Duration factory extension properties
• KT-27738 Make JS Regex.replace not inline
• KT-48607 Stabilize experimental API for 1.6
• KT-47304 Random#nextLong generates value outside provided range
• KT-47706 System property that controls the brittle contains optimization
• KT-48999 Align behavior of some JS functions with their JVM counterpart
• KT-46243 Typography.leftGuillemete and Typography.rightGuillemete are named inconsistent with standard
• KT-46101 Review deprecations in stdlib for 1.6
• KT-48456 Introduce Common (multi-platform) readln() and readlnOrNull() top-level functions
• KT-48587 Deprecate some of JS-only stdlib API
• KT-39328 Make builder collection implementations serializable
• KT-47676 K/JS: MatchResult.next() returns no expected next match if called after matchEntire
• KT-39166 Nothing is silently mapped to Void in arguments of the type passed to typeOf
• KT-39330 Migrate declarations from kotlin.dom and kotlin.browser packages to kotlinx.*
• KT-28753 Comparing floating point values in array/list operations 'contains', 'indexOf', 'lastIndexOf': IEEE 754 or total order
• KT-38854 Gradually change the return type of collection min/max functions to non-nullable
• KT-38754 Deprecate appendln in favor of appendLine

Native

• KT-48807 Cinterop: cannot create bindings for a framework when Xcode 13 RC is installed
• KT-49384 Kotlin/Native: Unexpected variance in super type argument: out @0
• KT-47424 StackOverflowError in IR hashCode() methods compiling KMM module for Kotlin/Native with Kotlin 1.5.0+
• KT-49234 SIGSEGV using the new memory manager in release in Kotlin 1.6.0-RC in MacosX64
• KT-48566 ExceptionInInitializerError when configuring Gradle project with kotlin-multiplatform plugin on a host unsupported by Kotlin/Native
• KT-48039 Native: support shaded (aka embeddable) compiler jar in Gradle plugin
• KT-42693 Remove dependency on ncurses5 library

Native. C Export

• KT-47209 kotlin-native fails to generate valid C header if a setter takes anonymous parameter (_)

Native. C and ObjC Import

• KT-48074 Native: cinterop: __flexarr support

Native. ObjC Export

• KT-47809 Kotlin/Native: ObjC-export module name usage in klib compilation

Native. Platforms

• KT-43024 Kotlin/Native: Windows as cross-compilation target

Native. Runtime

• KT-48452 Kotlin/Native: Support thread state switching in termination handlers for the new MM

Native. Runtime. Memory

• KT-48143 Kotlin/Native: test fails with assert with new MM and state checker
• KT-48364 Uninitialized top-level properties in new MM
• KT-44283 staticCFunction with CValue parameter crashes when invoked off the main thread

Native. Stdlib

• KT-47662 [Native, All platforms] Incorrect parsing of long strings to Float and Double

Reflection

• KT-45066 Support flexible types (nullability, mutability, raw) in typeOf
• KT-35877 typeOf<MutableList<>> cannot be distinguished from typeOf<List<>> in Kotlin/JVM

Tools. CLI

• KT-49007 Support three previous API versions
• KT-48622 Introduce compiler X-flag to use the builder inference for all calls by default
• KT-32376 “no main manifest attribute” on running the jar for cli-compiled Kotlin objects with main function
• KT-48026 Add the compiler X-flag to enable self upper bound type inference
• KT-47640 CLI: support -option=value format as for -Xoption=value
• KT-47099 Add a stable compiler argument for opt-in requirements as soon as they are stable

Tools. Commonizer

New Features

• KT-48455 [Commonizer] Optimistic number commonization
• KT-48459 [Commonizer] Add opt-in annotation to optimistically commonized numbers

Fixes

• KT-47430 [Commonizer] 'platform.posix.DIR' not implementing 'CPointed' when commonized for "unixMain"
• KT-48567 [Commonizer] pthread_self function is not commonized in atomicfu
• KT-48287 [Commonizer] platform.posix.mkdir not commonized in OKIO
• KT-48286 [Commonizer] platform.posix.ftruncate not commonized in OKIO
• KT-47523 MPP: Unable to resolve c-interop dependency if platform is included in an intermediate source set with the only target
• KT-48278 [Commonizer] platform.posix.usleep not commonized in sqliter
• KT-46691 MPP: Type mismatch for hierarchically commonized typealiases
• KT-47221 C-interop commonization fails if few targets reuse same source set
• KT-47775 Commonizer don't run for shared native code if test source set depends on main
• KT-47053 MPP: Unable to resolve c-interop commonized code from shared test source set
• KT-48118 Commonized c-interop lib is not attached to common main source set
• KT-47641 Enabled cInterop commonization triggers native compilation during Gradle sync in IDE
• KT-47056 MPP: Change naming for folder with commonized c-interop libraries

Tools. Compiler Plugins

• KT-48842 Compiler crash: Symbol with IrFieldSymbolImpl is unbound
• KT-48117 Kotlin AllOpen Plugin should open private methods
• KT-40340 jvm-abi-gen plugin: failure with Android D8 (Dexer) tool
• KT-40133 jvm-abi-gen plugin: fails for inline function containing apply block with anonymous object
• KT-28704 jvm-abi-gen plugin: avoid calling codegen twice per module
• KT-48111 JVM / IR: "IllegalAccessError: tried to access method" with NoArg plugin and sealed class

Tools. Gradle

Performance Improvements

• KT-49159 KotlinGradleBuildServices leaks Gradle instance when configuration cache is enabled

Fixes

• KT-45504 Deprecate Gradle option KotlinJvmOptions.useIR since 1.5
• KT-49189 In Gradle, dependencies on an MPP with Android+JVM fail to resolve in pure-Java projects
• KT-48830 Change deprecation level to 'ERROR' for 'KotlinGradleSubplugin'
• KT-48264 Cannot write Kotlin build report unless directory exists
• KT-48745 JVM target compatibility check should be disabled when Java sources are empty
• KT-49066 Setting kotlinOptions.modulePath in an android project breaks incremental compilation
• KT-48847 Remove deprecated kotlin options marked for removal after 1.5
• KT-48245 KGP makes compileOnly configuration resolvable
• KT-38010 Invalid warning "Runtime JAR files in the classpath should have the same version." with java-gradle-plugin
• KT-48768 Misleading 'jdkHome' deprecation message
• KT-46719 Remove 'kotlin.useFallbackCompilerSearch' build option
• KT-47792 KGP should ignore ProjectDependency when customize kotlin Dependencies
• KT-47867 Replace usages of IncrementalTaskInputs with InputChanges
• KT-46972 Migrate Kotlin repo to use Gradle toolchain feature

Tools. Gradle. JS

• KT-49124 KJS / Gradle: Unable to load '@webpack-cli/serve' command
• KT-49201 KJS / Gradle: NPM dependencies resolution may fail on parallel builds
• KT-48241 KJS / Gradle: NPM test dependency may break Gradle configuration cache
• KT-32071 Possibility to disable downloading of Node.js and Yarn
• KT-48332 Make NodeJsSetupTask and YarnSetupTask not cacheable
• KT-37895 KJS: NPM Post-install Scripts sometimes print "node: not found"
• KT-34985 kotlin-gradle-plugin: Should align ways NodeJs and Yarn are downloaded

Tools. Gradle. Multiplatform

• KT-48709 MPP: Task compileKotlinMacosX64 fails on matching native variants if ktlint presented
• KT-48919 Gradle multiplatform plugin 1.6.0-M1 does not accept apiVersion = "1.7"
• KT-46343 [Commonizer] Use lockfile for NativeDistributionCommonizationCache
• KT-48427 Execution failed for task ':commonizeNativeDistribution'. > java.io.FileNotFoundException lock (No such file or directory)
• KT-48513 Commonized platform libraries are unresolved in modules for new hierarchical MPP flag
• KT-48138 CInteropCommonizer: Missing commonization request if test source set has different targets than associated main
• KT-35832 Gradle: MPP plugin operates with -Xuse-experimental and not with -Xopt-in

Tools. Gradle. Native

• KT-48729 Test-source sets receive extra unnecessary granular dependencies to more common source sets when depending on MPP-library
• KT-37511 CocoaPods Gradle plugin: Support incremental task execution when switching between Xcode and terminal
• KT-47362 Cocoapods plugin: add error reporting for case when pod is not installed on user machine
• KT-37513 CocoaPods Gradle plugin: Support building tests from terminal for projects depending on pods

Tools. Kapt

• KT-45545 Kapt is not compatible with JDK 16+
• KT-47853 KaptWithoutKotlincTask eagerly resolves dependencies during construction/configuration and can cause deadlocks
• KT-47934 KaptJavaLog is unable to map stub back to the kotlin source
• KT-48195 Kapt causes dead lock in DefaultFileLockManager

Tools. Scripts

• KT-49400 Script resolver options can't take values with special symbols (/, , $, :, .) in them
• KT-49012 Compiling .kts script with inner class declaration fails with Backend Internal Error caused by AE: "Local class constructor can't have dispatch receiver"
• KT-47927 Script: memory leak with new engines
• KT-48025 JVM / IR / Script: IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER caused by method tnat returns outer function
• KT-48303 main.kts script fails to detect vanished dependencies if run from the cache
• KT-48177 Scripts: OutOfMemoryException with circular @file:Import
• KT-46645 Scripts: "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" caused by get accessor

Recent ChangeLogs:

ChangeLog-1.5.X

ChangeLog-1.4.X

ChangeLog-1.3.X

ChangeLog-1.2.X

ChangeLog-1.1.X

ChangeLog-1.0.X