JetBrains/kotlin
### [`v1.6.21`](https://togithub.com/JetBrains/kotlin/releases/tag/v1.6.21)
##### Changelog
##### Compiler
- [`KT-51979`](https://youtrack.jetbrains.com/issue/KT-51979) "AssertionError: No modifier list, but modifier has been found by the analyzer" exception on incorrect Java interface override
- [`KT-51893`](https://youtrack.jetbrains.com/issue/KT-51893) Duplicated \[OVERRIDE_DEPRECATION] on overridden properties
- [`KT-51927`](https://youtrack.jetbrains.com/issue/KT-51927) Native: `The symbol of unexpected type encountered during IR deserialization` error when multiple libraries have non-conflicting declarations with the same name
- [`KT-51843`](https://youtrack.jetbrains.com/issue/KT-51843) Functional interface constructor references are incorrectly allowed in 1.6.20 without any compiler flags
- [`KT-51672`](https://youtrack.jetbrains.com/issue/KT-51672) JVM IR: Inline class mangling issue in interface default methods split across multiple modules
- [`KT-51711`](https://youtrack.jetbrains.com/issue/KT-51711) Compiler warning is displayed in case there is 'if' else branch used with elvis
- [`KT-49317`](https://youtrack.jetbrains.com/issue/KT-49317) "IllegalStateException: Parent of this declaration is not a class: FUN LOCAL_FUNCTION_FOR_LAMBDA" with parameter of suspend type with the default parameter
##### IDE. Native
- [`KTIJ-20819`](https://youtrack.jetbrains.com/issue/KTIJ-20819) Native debugging support: "Debug is impossible without lldb binaries required by Kotlin/Native" on "Attach to process"
##### JavaScript
- [`KT-52010`](https://youtrack.jetbrains.com/issue/KT-52010) K/JS IR: both flows execute when using elvis operator
- [`KT-51973`](https://youtrack.jetbrains.com/issue/KT-51973) KJS / IR overridden properties of inherited interface missing
- [`KT-50504`](https://youtrack.jetbrains.com/issue/KT-50504) KJS / IR: Transpiled JS incorrectly uses the unscrambled names of internal fields
##### Tools. Gradle
- [`KT-51837`](https://youtrack.jetbrains.com/issue/KT-51837) kotlin-gradle-plugin:1.6.20 fails xray scan on shadowed Gson 2.8.6.
##### Tools. Gradle. Multiplatform
- [`KT-51810`](https://youtrack.jetbrains.com/issue/KT-51810) MPP / Gradle: Dependency locking fails with 1.6.20
- [`KT-51765`](https://youtrack.jetbrains.com/issue/KT-51765) com.android.lint in multiplatform project without android target should not trigger warning
##### Checksums
| File | Sha256 |
| --- | --- |
| kotlin-compiler-1.6.21.zip | 632166fed89f3f430482f5aa07f2e20b923b72ef688c8f5a7df3aa1502c6d8ba |
| kotlin-native-linux-x86\_64-1.6.21.tar.gz | 74f9aa3eaefb02cb942feeca8e4cfca78973faf86495884d5aa7ac4dda766ba9 |
| kotlin-native-macos-x86\_64-1.6.21.tar.gz | 08720b4bf1ed41674866f212fc6da1dd6b0e7259e9bad8e194f32b24b4a13d15 |
| kotlin-native-macos-aarch64-1.6.21.tar.gz | 4c5c4371d03f5aad541dd1d803fb34e0e97ee23f11358b0019e212d316d62d0c |
| kotlin-native-windows-x86\_64-1.6.21.zip | 9327eb3317ce636c0652b419836c4fffa0654c2bded71aff70c90635d4be4ab7 |
### [`v1.6.20`](https://togithub.com/JetBrains/kotlin/blob/HEAD/ChangeLog.md#1620)
##### Compiler
##### New Features
- [`KT-48217`](https://youtrack.jetbrains.com/issue/KT-48217) Add an annotation JvmDefaultWithCompatibility to allow generating DefaultImpls classes if -Xjvm-default=all option is used
- [`KT-49929`](https://youtrack.jetbrains.com/issue/KT-49929) \[FIR] Support programmatic creation of annotation class instances
- [`KT-49276`](https://youtrack.jetbrains.com/issue/KT-49276) Warn about potential overload resolution change if Range/Progression starts implementing Collection
- [`KT-47902`](https://youtrack.jetbrains.com/issue/KT-47902) Do not propagate method deprecation through overrides
- [`KT-49857`](https://youtrack.jetbrains.com/issue/KT-49857) Require Xcode 13 for building Kotlin/Native compiler
- [`KT-47701`](https://youtrack.jetbrains.com/issue/KT-47701) Support instantiation of annotation classes on Native
- [`KT-46085`](https://youtrack.jetbrains.com/issue/KT-46085) Support experimental parallel compilation of a single module in the JVM backend
- [`KT-46603`](https://youtrack.jetbrains.com/issue/KT-46603) Generate SAM-conversions to Java interfaces extending 'java.io.Serializable' as serializable using java.lang.invoke.LambdaMetafactory
##### Performance Improvements
- [`KT-50156`](https://youtrack.jetbrains.com/issue/KT-50156) HMPP: Slow frontend/ide performance in OKIO (ExpectActualDeclarationChecker)
- [`KT-50073`](https://youtrack.jetbrains.com/issue/KT-50073) Performance regression in adapted function references
- [`KT-50076`](https://youtrack.jetbrains.com/issue/KT-50076) Performance regression in super call to an interface member in $DefaultImpls
- [`KT-50080`](https://youtrack.jetbrains.com/issue/KT-50080) Performance regression in string template with generic property with primitive upper bound
- [`KT-50084`](https://youtrack.jetbrains.com/issue/KT-50084) Performance regression in concatenation with 'String?'
- [`KT-50078`](https://youtrack.jetbrains.com/issue/KT-50078) Performance regression in for-in-array loop
- [`KT-50039`](https://youtrack.jetbrains.com/issue/KT-50039) Performance regression in inner class constructor call with default parameters
- [`KT-48784`](https://youtrack.jetbrains.com/issue/KT-48784) An anonymous class has fields for variables that are only used in the constructor
- [`KT-42010`](https://youtrack.jetbrains.com/issue/KT-42010) Generate IINC instruction for postfix increment in JVM_IR
- [`KT-48433`](https://youtrack.jetbrains.com/issue/KT-48433) JVM_IR don't generate null check on 'this$0' parameter of inner class constructor
- [`KT-48435`](https://youtrack.jetbrains.com/issue/KT-48435) JVM_IR ConstForLoopBenchmark performance regression
- [`KT-48507`](https://youtrack.jetbrains.com/issue/KT-48507) JVM_IR ForLoopBenchmark regressions
- [`KT-48640`](https://youtrack.jetbrains.com/issue/KT-48640) Performance regression in 'longDownToLoop' benchmarks
- [`KT-29822`](https://youtrack.jetbrains.com/issue/KT-29822) Generate specialized bytecode for loops withIndex over unsigned arrays
- [`KT-48669`](https://youtrack.jetbrains.com/issue/KT-48669) Generate optimizable counter loop for loops over indices of unsigned arrays
- [`KT-49444`](https://youtrack.jetbrains.com/issue/KT-49444) Possible performance degradation with UInt downTo loop
- [`KT-48944`](https://youtrack.jetbrains.com/issue/KT-48944) Possible performance regression with comparison of local KFunctions
- [`KT-17111`](https://youtrack.jetbrains.com/issue/KT-17111) Eliminate redundant store/load instructions when the value stored is simple
- [`KT-36837`](https://youtrack.jetbrains.com/issue/KT-36837) Generate more compact code for for-in-range loop in JVM_IR
- [`KT-48947`](https://youtrack.jetbrains.com/issue/KT-48947) JVM / IR Possible performance regression with string templates
- [`KT-48931`](https://youtrack.jetbrains.com/issue/KT-48931) JVM / IR: Performance degradation with string concatenation
- [`KT-36654`](https://youtrack.jetbrains.com/issue/KT-36654) Generate more compact bytecode for safe call in JVM_IR
##### Fixes
- [`KT-24643`](https://youtrack.jetbrains.com/issue/KT-24643) Prohibit using a type parameter declared for an extension property inside delegate
- [`KT-51747`](https://youtrack.jetbrains.com/issue/KT-51747) Make `KtCallableDeclaration.getContextReceivers` default to preserve compatibility
- [`KT-49658`](https://youtrack.jetbrains.com/issue/KT-49658) NI: False negative TYPE_MISMATCH on nullable type with `when`
- [`KT-43493`](https://youtrack.jetbrains.com/issue/KT-43493) NI: [@BuilderInference](https://togithub.com/BuilderInference) prevents compilation error of "Operator '==' cannot be applied to 'Long' and 'Int'"
- [`KT-51649`](https://youtrack.jetbrains.com/issue/KT-51649) Kotlin/Native: reduce binary size of watchosArm32 and iosArm32 targets by limiting inlining of runtime functions
- [`KT-48626`](https://youtrack.jetbrains.com/issue/KT-48626) JVM IR: incorrect behavior for captured for-loop parameter since 1.6.20-dev-723
- [`KT-51036`](https://youtrack.jetbrains.com/issue/KT-51036) JVM / IR: "NullPointerException: Parameter specified as non-null is null" with synchronized and companion object
- [`KT-51471`](https://youtrack.jetbrains.com/issue/KT-51471) Native: incorrect debug information when inheriting suspend fun invoke implementation
- [`KT-51352`](https://youtrack.jetbrains.com/issue/KT-51352) "ClassCastException: class ScopeCoroutine cannot be cast to class Iterable" caused by coroutines and context receivers
- [`KT-51271`](https://youtrack.jetbrains.com/issue/KT-51271) "ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3" with inlining of context function
- [`KT-47084`](https://youtrack.jetbrains.com/issue/KT-47084) JVM IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL" with tailrec function default parameter nested inline lambda
- [`KT-30616`](https://youtrack.jetbrains.com/issue/KT-30616) Script: "Don't know how to generate outer expression" for top-level variable reference from static context (companion object, enum)
- [`KT-50520`](https://youtrack.jetbrains.com/issue/KT-50520) "NPE: containingDeclaration.ac…lDeclarationType.REGULAR) must not be null" with implicit type on self-referencing lambda in a builder
- [`KT-51353`](https://youtrack.jetbrains.com/issue/KT-51353) IncompatibleClassChangeError: Expected non-static field com.soywiz.korim.color.Colors.BLACK
- [`KT-48945`](https://youtrack.jetbrains.com/issue/KT-48945) JVM IR: special bridge for `get` is not generated in a Map subclass
- [`KT-48499`](https://youtrack.jetbrains.com/issue/KT-48499) Interface call with an inline/value parameter generates AbstractMethodError after rebuilding the module, but NOT the file.
- [`KT-49998`](https://youtrack.jetbrains.com/issue/KT-49998) JVM: missing default value for annotation parameter of an unsigned type
- [`KT-49793`](https://youtrack.jetbrains.com/issue/KT-49793) JVM: `IncompatibleClassChangeError: Expected non-static field` when property delegation uses receiver of another delegated property
- [`KT-51302`](https://youtrack.jetbrains.com/issue/KT-51302) Kotlin/Native 1.6.20-M1 compiler fails because of assertion in NativeAnnotationImplementationTransformer
- [`KT-51148`](https://youtrack.jetbrains.com/issue/KT-51148) "AssertionError: At this stage there should be no remaining variables with proper constraints" caused by two type parameters
- [`KT-50970`](https://youtrack.jetbrains.com/issue/KT-50970) Kotlin/Native: use arm instruction set instead of thumb-2 for iosArm32 and watchosArm32 targets
- [`KT-50843`](https://youtrack.jetbrains.com/issue/KT-50843) Kotlin/Native: LLVM constant merge pass does not work for Kotlin constants
- [`KT-51157`](https://youtrack.jetbrains.com/issue/KT-51157) JVM / IR: "IndexOutOfBoundsException: Index: 1, Size: 1" caused by interface hierarchy and UInt method parameter
- [`KT-50498`](https://youtrack.jetbrains.com/issue/KT-50498) Exception after analysing an erroneous lambda
- [`KT-50258`](https://youtrack.jetbrains.com/issue/KT-50258) `equals()` returns `false` on the same enum instances if we check it for the second time in `when`
- [`KT-51062`](https://youtrack.jetbrains.com/issue/KT-51062) Progressions resolve changing warning isn't reported for Java methods
- [`KT-48544`](https://youtrack.jetbrains.com/issue/KT-48544) JVM / IR: "UnsupportedOperationException: Unknown structure of ADAPTER_FOR_CALLABLE_REFERENCE" with callable reference `::arrayOf`
- [`KT-50978`](https://youtrack.jetbrains.com/issue/KT-50978) \[Native] Error while building static cache: NoSuchElementException at IrTypeInlineClassesSupport.getInlinedClassUnderlyingType(InlineClasses.kt:341)
- [`KT-50977`](https://youtrack.jetbrains.com/issue/KT-50977) \[Native] Error while building static cache: IllegalStateException: Class CLASS ENUM_ENTRY is not found at KonanIrlinkerKt.findClass(KonanIrlinker.kt:229)
- [`KT-50976`](https://youtrack.jetbrains.com/issue/KT-50976) \[Native] Error while building static cache: IllegalStateException: No descriptor found at DescriptorByIdSignatureFinder.findDescriptorForPublicSignature(DescriptorByIdSignatureFinder.kt:157)
- [`KT-51040`](https://youtrack.jetbrains.com/issue/KT-51040) Type inference fails on 1.6: "Cannot use 'CapturedType(\*)' as reified type parameter" with EnumSet and elvis operator
- [`KT-51080`](https://youtrack.jetbrains.com/issue/KT-51080) Line number in mapping for the first instruction is lost
- [`KT-49526`](https://youtrack.jetbrains.com/issue/KT-49526) JVM IR: Function reference with non-denotable intersection type argument is not inlined and is incorrectly approximated
- [`KT-50399`](https://youtrack.jetbrains.com/issue/KT-50399) Error: unexpected variance in super type argument: out [@0](https://togithub.com/0)
- [`KT-50649`](https://youtrack.jetbrains.com/issue/KT-50649) JVM IR: ClassCastException when returning Result as generic type
- [`KT-50617`](https://youtrack.jetbrains.com/issue/KT-50617) JVM IR: java.lang.IndexOutOfBoundsException "Empty list doesn't contain element at index 0" when class and interface have the same name and extension function is used
- [`KT-50856`](https://youtrack.jetbrains.com/issue/KT-50856) SAM conversion generates invalid bytecode for generics
- [`KT-45693`](https://youtrack.jetbrains.com/issue/KT-45693) False negative INCOMPATIBLE_TYPES with `when` with generic subject
- [`KT-49903`](https://youtrack.jetbrains.com/issue/KT-49903) JVM IR: InlineOnly optimization leads to behavior change for println with mutating System.out
- [`KT-51022`](https://youtrack.jetbrains.com/issue/KT-51022) Fix error messages for resolution ambiguity with stub types
- [`KT-51035`](https://youtrack.jetbrains.com/issue/KT-51035) PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression:" caused by recursive call of java function
- [`KT-50797`](https://youtrack.jetbrains.com/issue/KT-50797) Implement fix for false negative UPPER_BOUND_VIOLATED with generic typealias using not all type parameters as arguments for underlying type
- [`KT-50878`](https://youtrack.jetbrains.com/issue/KT-50878) Usage of contextual declarations from third-party library is allowed without `-Xcontext-receivers`
- [`KT-49829`](https://youtrack.jetbrains.com/issue/KT-49829) Wrong "cast can never succeed" diagnostic with builder inference
- [`KT-49828`](https://youtrack.jetbrains.com/issue/KT-49828) Improve builder inference diagnostics with overload resolution ambiguity
- [`KT-50989`](https://youtrack.jetbrains.com/issue/KT-50989) CCE cause by EmptySubstitutor in ResolutionWithStubTypesChecker
- [`KT-49729`](https://youtrack.jetbrains.com/issue/KT-49729) Implement deprecation warning for private constructors of sealed classes
- [`KT-49349`](https://youtrack.jetbrains.com/issue/KT-49349) Implement deprecation for invalid if as expression in rhs of elvis
- [`KT-46285`](https://youtrack.jetbrains.com/issue/KT-46285) \[SEALED_SUPERTYPE_IN_LOCAL_CLASS] Error message isn't adopted to local objects and sealed interfaces
- [`KT-49002`](https://youtrack.jetbrains.com/issue/KT-49002) Allow OptIn marker on override if base class has the same marker
- [`KT-48899`](https://youtrack.jetbrains.com/issue/KT-48899) Report warnings on overrides with wrong types nullability
- [`KT-49461`](https://youtrack.jetbrains.com/issue/KT-49461) Implement prohibitation of access to members of companion of enum class from initializers of entries of this enum
- [`KT-49754`](https://youtrack.jetbrains.com/issue/KT-49754) Kotlin/JS: [@JsExport](https://togithub.com/JsExport) on enum class reports NON_EXPORTABLE_TYPE warning
- [`KT-49598`](https://youtrack.jetbrains.com/issue/KT-49598) Misleading error message "Using [@JvmRecord](https://togithub.com/JvmRecord) is only allowed with -jvm-target 15 and -Xjvm-enable-preview flag enabled"
- [`KT-44133`](https://youtrack.jetbrains.com/issue/KT-44133) Inline classes: class literal in annotation arguments uses underlying type
- [`KT-47703`](https://youtrack.jetbrains.com/issue/KT-47703) ClassCastException: Programmatically created annotation can't hold Array\>
- [`KT-47549`](https://youtrack.jetbrains.com/issue/KT-47549) JVM / IR: Null argument in ExpressionCodegen for parameter VALUE_PARAMETER CONTINUATION_CLASS caused by suspend function inside "fun interface" in another file
- [`KT-50120`](https://youtrack.jetbrains.com/issue/KT-50120) HMPP: False positive \[NO_VALUE_FOR_PARAMETER] for expect function usages
- [`KT-49864`](https://youtrack.jetbrains.com/issue/KT-49864) JVM IR: NoSuchMethodError calling default interface method with inline class return type in -Xjvm-default=all mode
- [`KT-49812`](https://youtrack.jetbrains.com/issue/KT-49812) JVM / IR: "java.lang.VerifyError: Bad return type" when using Result type attribute + extension function with same name
- [`KT-49936`](https://youtrack.jetbrains.com/issue/KT-49936) Extension property in a data class with the same name as the constructor parameter leads to incorrect component function being resolved and generated
- [`KT-48181`](https://youtrack.jetbrains.com/issue/KT-48181) "ISE: Null argument in ExpressionCodegen for parameter VALUE_PARAMETER" on creating instance of kotlin.Metadata
- [`KT-50215`](https://youtrack.jetbrains.com/issue/KT-50215) VerifyError caused by missing cast after is check in when
- [`KT-49977`](https://youtrack.jetbrains.com/issue/KT-49977) "Parameter specified as non-null is null" when inline class implements interface method with default parameters
- [`KT-50385`](https://youtrack.jetbrains.com/issue/KT-50385) DUPLICATE_LABEL_IN_WHEN is reported on incorrect branches
- [`KT-49092`](https://youtrack.jetbrains.com/issue/KT-49092) JVM: ArrayIndexOutOfBoundsException on compiling call with `if` expression and TODO() arguments
- [`KT-48987`](https://youtrack.jetbrains.com/issue/KT-48987) JVM / IR: Smartcast, which never succeed, crashes the compiler
- [`KT-50277`](https://youtrack.jetbrains.com/issue/KT-50277) Invalid bytecode generated for inline lambda in suspend function
- [`KT-50219`](https://youtrack.jetbrains.com/issue/KT-50219) FIR DFA/CFA: no smart cast after null check and assignment
- [`KT-44561`](https://youtrack.jetbrains.com/issue/KT-44561) FIR DFA: extract non-null info from comparison against variable with initial constant value
- [`KT-44560`](https://youtrack.jetbrains.com/issue/KT-44560) FIR DFA: propagate non-null info to original variables in not-null assertion or cast expression
- [`KT-50278`](https://youtrack.jetbrains.com/issue/KT-50278) FIR: accidental resolve to inaccessible value parameter
- [`KT-47483`](https://youtrack.jetbrains.com/issue/KT-47483) JVM IR: "NoSuchElementException: Sequence contains no element matching the predicate" on compiling Array instantiation with TODO
- [`KT-50304`](https://youtrack.jetbrains.com/issue/KT-50304) EXC_BAD_ACCESS at IntrinsicsNative.kt starting coroutine on object with suspend fun as supertype
- [`KT-49765`](https://youtrack.jetbrains.com/issue/KT-49765) JVM: ClassCastException when trying to add object to EmptyList
- [`KT-46879`](https://youtrack.jetbrains.com/issue/KT-46879) "AssertionError: Stack should be spilled before suspension call" with Flow and reified type
- [`KT-50172`](https://youtrack.jetbrains.com/issue/KT-50172) "AssertionError: Not a callable reflection type" on local function reference with the same name as local variable
- [`KT-49443`](https://youtrack.jetbrains.com/issue/KT-49443) JVM IR, Script: "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" with constructor call of class that has a top-level extension function call
- [`KT-50193`](https://youtrack.jetbrains.com/issue/KT-50193) Garbage collection is not working the same way after jvm-ir-backend change
- [`KT-19424`](https://youtrack.jetbrains.com/issue/KT-19424) Compilation exception for script with property delegate calling operator invoke on an object
- [`KT-43995`](https://youtrack.jetbrains.com/issue/KT-43995) Script: "IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" if companion object initializer calls method on list
- [`KT-47000`](https://youtrack.jetbrains.com/issue/KT-47000) Allow graceful migration to -Xjvm-default=all-compatibility by allowing to inherit from interfaces even in the old (-Xjvm-default=disable) mode
- [`KT-50180`](https://youtrack.jetbrains.com/issue/KT-50180) FIR: not enough information to infer type variable for definitely not null type
- [`KT-50163`](https://youtrack.jetbrains.com/issue/KT-50163) FIR: ISE unsupported compile-time value BLOCK on complex annotations
- [`KT-50171`](https://youtrack.jetbrains.com/issue/KT-50171) JVM IR: "UninitializedPropertyAccessException: Parent not initialized: IrVariableImpl" on SAM-converted property setter reference with Double parameter inside lambda
- [`KT-50140`](https://youtrack.jetbrains.com/issue/KT-50140) Internal error on explicit string concatenation of generic type value with 'String' upper bound
- [`KT-49992`](https://youtrack.jetbrains.com/issue/KT-49992) Anonymous object should not have access to private members from supertypes
- [`KT-49973`](https://youtrack.jetbrains.com/issue/KT-49973) Check existing of default error message for all diagnostics
- [`KT-50019`](https://youtrack.jetbrains.com/issue/KT-50019) Property delegated to callable reference: "ISE: Local class should have its name computed in InventNamesForLocalClasses" with -Xno-optimized-callable-references
- [`KT-49645`](https://youtrack.jetbrains.com/issue/KT-49645) JVM / IR: "IllegalStateException: Local class should have its name computed" caused by default suspend function in interface and value class
- [`KT-50028`](https://youtrack.jetbrains.com/issue/KT-50028) Incorrect implicit casts from Unit
- [`KT-49615`](https://youtrack.jetbrains.com/issue/KT-49615) JVM / IR: "Exception during IR lowering" with list of value classes with non-trivial constructor inside suspend lambda
- [`KT-49127`](https://youtrack.jetbrains.com/issue/KT-49127) FIR: smart cast is not performed after comparison
- [`KT-48708`](https://youtrack.jetbrains.com/issue/KT-48708) Incorrect cast from Unit to Int
- [`KT-48376`](https://youtrack.jetbrains.com/issue/KT-48376) FIR: False positive UNITIALIZED_VARIABLE after try/finally with return from try
- [`KT-48113`](https://youtrack.jetbrains.com/issue/KT-48113) FIR: (false) positive EQUALITY_NOT_APPLICABLE for intersection with platform type
- [`KT-48305`](https://youtrack.jetbrains.com/issue/KT-48305) FIR: incorrect raw type cast
- [`KT-48378`](https://youtrack.jetbrains.com/issue/KT-48378) FIR: synthetic accessor lowering should not attempt to modify other files
- [`KT-48634`](https://youtrack.jetbrains.com/issue/KT-48634) FIR: false property-setter-function resolve cycle
- [`KT-48621`](https://youtrack.jetbrains.com/issue/KT-48621) FIR: SyntheticAccessorLowering should not attempt to modify other files for protected JvmField
- [`KT-48381`](https://youtrack.jetbrains.com/issue/KT-48381) Invalid LLVM module: verification failure of createInlineClassInArgumentPosition.kt
- [`KT-48527`](https://youtrack.jetbrains.com/issue/KT-48527) Native: top-level properties in files with [@Test](https://togithub.com/Test) functions are initialized eagerly even if lazy initialization is enabled
- [`KT-48559`](https://youtrack.jetbrains.com/issue/KT-48559) IllegalArgumentException: Unexpected super type argument: \* @ 0 during IR lowering
- [`KT-48687`](https://youtrack.jetbrains.com/issue/KT-48687) IR dump mismatch after deep copy with symbols in IR text test
- [`KT-44811`](https://youtrack.jetbrains.com/issue/KT-44811) \[FIR] Exception in body resolve of new contracts
- [`KT-48363`](https://youtrack.jetbrains.com/issue/KT-48363) FIR behaves differently in case of resolution between classifier and top-level property
- [`KT-48801`](https://youtrack.jetbrains.com/issue/KT-48801) "AssertionError: Stack should be spilled before suspension call" with Flow and crossinline
- [`KT-46389`](https://youtrack.jetbrains.com/issue/KT-46389) JVM / IR: "ClassCastException: class IrGetValueImpl cannot be cast to class IrConst" with inheritance of supertypes member functions with similar signatures
- [`KT-47797`](https://youtrack.jetbrains.com/issue/KT-47797) Regression during migration to 1.6 in compiler
- [`KT-47987`](https://youtrack.jetbrains.com/issue/KT-47987) Can't infer a postponed type variable based on callable reference receiver type
- [`KT-48446`](https://youtrack.jetbrains.com/issue/KT-48446) "IllegalStateException: IrErrorType (getErasedUpperBound)" caused by suspend function reference
- [`KT-48651`](https://youtrack.jetbrains.com/issue/KT-48651) Collect intermediate annotations during type expanding
- [`KT-48754`](https://youtrack.jetbrains.com/issue/KT-48754) JVM IR: in EnclosingMethod leads to IncompatibleClassChangeError on Android 5.0
- [`KT-45034`](https://youtrack.jetbrains.com/issue/KT-45034) Use the new type inference for top-level callable references
- [`KT-49001`](https://youtrack.jetbrains.com/issue/KT-49001) OptIn marker should spread from class to its members, taking into account real dispatch receiver type
- [`KT-49038`](https://youtrack.jetbrains.com/issue/KT-49038) Generics are discriminated during callable references resolution (false negative)
- [`KT-48954`](https://youtrack.jetbrains.com/issue/KT-48954) JVM IR: IllegalAccessError when using Java method reference in constructor
- [`KT-48284`](https://youtrack.jetbrains.com/issue/KT-48284) JVM / IR: "IllegalStateException: Function has no body: FUN STATIC_INLINE_CLASS_REPLACEMENT" caused by inline member toString of value class and string interpolation
- [`KT-49053`](https://youtrack.jetbrains.com/issue/KT-49053) JVM / IR: "AssertionError: Unbound symbols not allowed" on inheriting a protected Java method that returns a package private class from a differently-named file
- [`KT-49106`](https://youtrack.jetbrains.com/issue/KT-49106) JVM: infinite recursion with overridden default suspend interface method where override calls super
- [`KT-45345`](https://youtrack.jetbrains.com/issue/KT-45345) FIR DFA: `FirDataFlowAnalyzer` seems to add wrong type constraints for type parameters
- [`KT-44513`](https://youtrack.jetbrains.com/issue/KT-44513) FIR DFA: extract non-null info from x?.y!!
- [`KT-44559`](https://youtrack.jetbrains.com/issue/KT-44559) FIR DFA: propagate non-null info from not-null assertion (!!)
- [`KT-49073`](https://youtrack.jetbrains.com/issue/KT-49073) FIR: REDUNDANT_MODIFIER and DEPRECATED_MODIFIER_PAIR should be warnings
- [`KT-46371`](https://youtrack.jetbrains.com/issue/KT-46371) FIR: Investigate FunctionType -> ExtensionFunctionType coercion
- [`KT-49078`](https://youtrack.jetbrains.com/issue/KT-49078) FIR: false positive TYPE_VARIANCE_CONFLICT
- [`KT-47135`](https://youtrack.jetbrains.com/issue/KT-47135) FIR: local class references does not compile
- [`KT-48600`](https://youtrack.jetbrains.com/issue/KT-48600) NON_TAIL_RECURSIVE_CALL missing for calls inside lambda
- [`KT-48602`](https://youtrack.jetbrains.com/issue/KT-48602) NON_TAIL_RECURSIVE_CALL missing for calls with explicit dispatch receiver to a singleton
- [`KT-48982`](https://youtrack.jetbrains.com/issue/KT-48982) JVM / IR: KotlinNothingValueException caused by function with local object
- [`KT-49087`](https://youtrack.jetbrains.com/issue/KT-49087) FIR: false positive REPEATED_ANNOTATION
- [`KT-48648`](https://youtrack.jetbrains.com/issue/KT-48648) JVM IR: "AssertionError: Should be primitive or nullable primitive type" with [@JvmField](https://togithub.com/JvmField) generic property with Number upper bound
- [`KT-49069`](https://youtrack.jetbrains.com/issue/KT-49069) FIR: False positive INAPPLICABLE_JVM_NAME on getter
- [`KT-49203`](https://youtrack.jetbrains.com/issue/KT-49203) JVM IR: "AssertionError: Unbound symbols not allowed" with lateinit var and `plusAssign` operator convention call
- [`KT-48993`](https://youtrack.jetbrains.com/issue/KT-48993) JVM / IR: "IllegalStateException: Validation failed in file \" using [@JvmMultifileClass](https://togithub.com/JvmMultifileClass) and one of the symbols in the file exposes a [@JvmInline](https://togithub.com/JvmInline) value class
- [`KT-48938`](https://youtrack.jetbrains.com/issue/KT-48938) FIR: Investigate how priorities should work in case SAM-conversion + type parameters
- [`KT-49129`](https://youtrack.jetbrains.com/issue/KT-49129) FIR: false positive of INNER_CLASS_OF_GENERIC_THROWABLE_SUBCLASS
- [`KT-49076`](https://youtrack.jetbrains.com/issue/KT-49076) FIR: false positive "An annotation argument must be compile-time constant" on array of imports
- [`KT-49222`](https://youtrack.jetbrains.com/issue/KT-49222) FIR: StackOverflow in MethodSignatureMapper
- [`KT-49083`](https://youtrack.jetbrains.com/issue/KT-49083) FIR erroneously requires default value parameters for override calls when imported from object
- [`KT-49135`](https://youtrack.jetbrains.com/issue/KT-49135) FIR: ambiguity between type alias and function
- [`KT-49134`](https://youtrack.jetbrains.com/issue/KT-49134) FIR makes no difference between lambda with empty parameter list and without explicit parameter list
- [`KT-49301`](https://youtrack.jetbrains.com/issue/KT-49301) FIR: Unresolved reference: for object inherited from inner class
- [`KT-49070`](https://youtrack.jetbrains.com/issue/KT-49070) FIR: ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED with type parameter / class conflict
- [`KT-49133`](https://youtrack.jetbrains.com/issue/KT-49133) FIR: protected java.lang.Throwable constructor is not available
- [`KT-49407`](https://youtrack.jetbrains.com/issue/KT-49407) JVM / IR: "java.lang.VerifyError: Bad local variable type" with "Int.mod" inside "Long.mod" and non-trivial argument
- [`KT-44975`](https://youtrack.jetbrains.com/issue/KT-44975) SUBCLASS_CANT_CALL_COMPANION_PROTECTED_NON_STATIC: confusing error message
- [`KT-38698`](https://youtrack.jetbrains.com/issue/KT-38698) MANY_INTERFACES_MEMBER_NOT_IMPLEMENTED error message: interface is called a "class"
- [`KT-45001`](https://youtrack.jetbrains.com/issue/KT-45001) Confusing warning message "This class can only be used with the compiler argument" for [@OptIn](https://togithub.com/OptIn) annotation
- [`KT-49411`](https://youtrack.jetbrains.com/issue/KT-49411) JVM / IR: NullPointerException during IR lowering with [@JvmField](https://togithub.com/JvmField) property in loop range
- [`KT-49260`](https://youtrack.jetbrains.com/issue/KT-49260) FIR: make FirBasedSymbol hierarchy to correspond FirDeclaration hierarchy
- [`KT-49289`](https://youtrack.jetbrains.com/issue/KT-49289) FIR: false positive "return required" for if/else with inlined return in branch
- [`KT-49316`](https://youtrack.jetbrains.com/issue/KT-49316) JVM / IR: "AssertionError: SyntheticAccessorLowering should not attempt to modify other files!" caused by unreachable code which try to modify `val` from the other package
- [`KT-45915`](https://youtrack.jetbrains.com/issue/KT-45915) NoDescriptorForDeclarationException: Descriptor wasn't found for declaration FUN with circular module dependencies in JPS
- [`KT-49288`](https://youtrack.jetbrains.com/issue/KT-49288) FIR2IR: consider generating all fake override calls properly
- [`KT-42784`](https://youtrack.jetbrains.com/issue/KT-42784) FIR2IR: first create fake overrides, then bind overridden to them
- [`KT-48816`](https://youtrack.jetbrains.com/issue/KT-48816) Kotlin/Native Symbol for public platform.darwin/NSObject|null\[100] is unbound
- [`KT-49372`](https://youtrack.jetbrains.com/issue/KT-49372) JVM / IR: Incorrect work of the loop optimization for mutable variable
- [`KT-49356`](https://youtrack.jetbrains.com/issue/KT-49356) Native: UnsupportedOperationException: RETURNABLE_BLOCK caused by nested return with boxing and inline
- [`KT-49659`](https://youtrack.jetbrains.com/issue/KT-49659) JVM IR: Missing value class mangling in SAM wrappers for fun interfaces from different modules
- [`KT-47101`](https://youtrack.jetbrains.com/issue/KT-47101) Incorrect scope for supertypes in companion objects
- [`KT-49360`](https://youtrack.jetbrains.com/issue/KT-49360) Invalid LLVM module: "inlinable function call in a function with debug info must have a !dbg location"
- [`KT-48430`](https://youtrack.jetbrains.com/issue/KT-48430) JVM: ClassCastException with inline class as generic argument for type parameter used in a function type
- [`KT-49575`](https://youtrack.jetbrains.com/issue/KT-49575) IllegalArgumentException: Unhandled intrinsic in ExpressionCodegen with circular module dependencies in JPS
- [`KT-47669`](https://youtrack.jetbrains.com/issue/KT-47669) IR inliner doesn't handle inner class functions referring outer this
- [`KT-48668`](https://youtrack.jetbrains.com/issue/KT-48668) JVM IR: "ISE: Value at CLASS must not be null for CLASS" for modules with a dependency cycle
- [`KT-49370`](https://youtrack.jetbrains.com/issue/KT-49370) JVM / IR: "java.lang.VerifyError: Bad local variable type" with "fun Long.mod" and non-trivial argument
- [`KT-46744`](https://youtrack.jetbrains.com/issue/KT-46744) Memory Leaks in Kotlin daemon
- [`KT-48806`](https://youtrack.jetbrains.com/issue/KT-48806) False-negative USED_AS_EXPRESSION for unreachable catch clauses
- [`KT-45972`](https://youtrack.jetbrains.com/issue/KT-45972) FIR: type is incorrectly resolved to private
- [`KT-46968`](https://youtrack.jetbrains.com/issue/KT-46968) Remove FirCompositeScope from type resolve
- [`KT-49072`](https://youtrack.jetbrains.com/issue/KT-49072) FIR: accidental resolve to private-in-file type
- [`KT-34822`](https://youtrack.jetbrains.com/issue/KT-34822) FIR scopes: deal with nested / inner classes and type parameter priority
- [`KT-49702`](https://youtrack.jetbrains.com/issue/KT-49702) Exception from RENDER_WHEN_MISSING_CASES diagnostic on malformed sealed class inheritor
- [`KT-49860`](https://youtrack.jetbrains.com/issue/KT-49860) \[FIR] Add smartcast expression to synthetic `subj` access
- [`KT-49836`](https://youtrack.jetbrains.com/issue/KT-49836) Inference fails on lambda and adjacent function expressions with receiver
- [`KT-49832`](https://youtrack.jetbrains.com/issue/KT-49832) Inference fails on lambda for function types with extension parameter
- [`KT-44022`](https://youtrack.jetbrains.com/issue/KT-44022) Excessive diagnostics range for DECLARATION_CANT_BE_INLINED
- [`KT-48690`](https://youtrack.jetbrains.com/issue/KT-48690) VERSION_REQUIREMENT_DEPRECATION_ERROR message: use current compiler version instead of language version
- [`KT-49609`](https://youtrack.jetbrains.com/issue/KT-49609) Incorrect grammar in DATA_CLASS_NOT_PROPERTY_PARAMETER error message
- [`KT-49600`](https://youtrack.jetbrains.com/issue/KT-49600) Misspelled error message for non-constructor properties with backing fields in [@JvmRecord](https://togithub.com/JvmRecord) class
- [`KT-49339`](https://youtrack.jetbrains.com/issue/KT-49339) Warn about synchronizing on value classes
- [`KT-49950`](https://youtrack.jetbrains.com/issue/KT-49950) Compilation failed: An operation is not implemented: IrBasedTypeParameterDescriptor
- [`KT-43604`](https://youtrack.jetbrains.com/issue/KT-43604) Problem with initialization order
- [`KT-23890`](https://youtrack.jetbrains.com/issue/KT-23890) Default arguments are not transferred from expect generic member functions
- [`KT-48811`](https://youtrack.jetbrains.com/issue/KT-48811) Expect/actual class with default constructor argument values can not be instantiated from a shared source set without passing arguments (with HMPP enabled)
- [`KT-48106`](https://youtrack.jetbrains.com/issue/KT-48106) FIR: incorrect type inference in provideDelegate receiver
- [`KT-48325`](https://youtrack.jetbrains.com/issue/KT-48325) Safe call operator prevents object from being garbage collected before leaving function
- [`KT-50004`](https://youtrack.jetbrains.com/issue/KT-50004) Linking kotlinx.serialization crashes on Native and JS IR backends
- [`KT-49311`](https://youtrack.jetbrains.com/issue/KT-49311) Missing FIR checker for unresolved references in import statement
- [`KT-48104`](https://youtrack.jetbrains.com/issue/KT-48104) FIR does not see NotNull/Nullable annotations on type arguments
- [`KT-46812`](https://youtrack.jetbrains.com/issue/KT-46812) \[FIR] Make FIR diagnostics not related to Diagnostics from FE 1.0
- [`KT-37374`](https://youtrack.jetbrains.com/issue/KT-37374) \[FIR] Add `CheckInfixModifier` resolution stage
- [`KT-38351`](https://youtrack.jetbrains.com/issue/KT-38351) FIR: Support `CheckOperatorModifier` resolution stage
- [`KT-39614`](https://youtrack.jetbrains.com/issue/KT-39614) \[FIR] Fix building CFG for different candidates of plus assign call
- [`KT-40197`](https://youtrack.jetbrains.com/issue/KT-40197) \[FIR] Strange Behaviour of Type Arguments
- [`KT-40362`](https://youtrack.jetbrains.com/issue/KT-40362) \[FIR] Match type arguments with type parameters of corresponding qualifier
- [`KT-40375`](https://youtrack.jetbrains.com/issue/KT-40375) FIR: No transformation implicit type -> error type for function value parameters
- [`KT-40585`](https://youtrack.jetbrains.com/issue/KT-40585) \[FIR] Incorrect type for 1/1.0
- [`KT-42525`](https://youtrack.jetbrains.com/issue/KT-42525) \[FIR] Incorrect IR produced for java.lang.Byte.MAX_VALUE
- [`KT-43359`](https://youtrack.jetbrains.com/issue/KT-43359) FIR: Check applicability type for callable reference with unbound receiver
- [`KT-43378`](https://youtrack.jetbrains.com/issue/KT-43378) FIR: Support or prohibit via call checker callable references to member extensions
- [`KT-43289`](https://youtrack.jetbrains.com/issue/KT-43289) FIR: Correctly load irrelevant override for special built-ins
- [`KT-44558`](https://youtrack.jetbrains.com/issue/KT-44558) Annotation arguments const expr support is missing in FIR
- [`KT-45223`](https://youtrack.jetbrains.com/issue/KT-45223) \[FIR] Ambiguity between explicit and synthetic `removeAt`
- [`KT-42215`](https://youtrack.jetbrains.com/issue/KT-42215) FIR: callable reference resolution with type constraints at call-sites
- [`KT-45520`](https://youtrack.jetbrains.com/issue/KT-45520) FIR: NONE_APPLICABLE for unsafe call to function with overloads instead of UNSAFE_CALL
- [`KT-46410`](https://youtrack.jetbrains.com/issue/KT-46410) \[FIR] Transform of FirAugmentedArraySetCall leaves erroneous nodes in control flow graph
- [`KT-46421`](https://youtrack.jetbrains.com/issue/KT-46421) FIR: Investigate builder-inference cases
- [`KT-43948`](https://youtrack.jetbrains.com/issue/KT-43948) FIR: hidden unresolved callable reference
- [`KT-46558`](https://youtrack.jetbrains.com/issue/KT-46558) FIR DFA: run once contract is not considered when analyzing lambda
- [`KT-47125`](https://youtrack.jetbrains.com/issue/KT-47125) FIR: Do not avoid trivial constraints if they aren't from upper bounds
- [`KT-43691`](https://youtrack.jetbrains.com/issue/KT-43691) FIR: false positive VARIABLE_INITIALIZER_IS_REDUNDANT with usage in try...finally
- [`KT-37311`](https://youtrack.jetbrains.com/issue/KT-37311) \[FIR] Support inference of callable references with type variable as expected type
- [`KT-31972`](https://youtrack.jetbrains.com/issue/KT-31972) Error type encountered: org.jetbrains.kotlin.types.ErrorUtils$UninferredParameterTypeConstructor@[`1f5b38c`](https://togithub.com/JetBrains/kotlin/commit/1f5b38c2) (ErrorType).
- [`KT-48761`](https://youtrack.jetbrains.com/issue/KT-48761) Report NO_TAIL_CALLS_FOUND on 'tailrec' modifier, not on the whole function header
- [`KT-47647`](https://youtrack.jetbrains.com/issue/KT-47647) NI: Function reference to Java static method can't compile if passed directly as KFunction1 parameter
- [`KT-46995`](https://youtrack.jetbrains.com/issue/KT-46995) Fix setters implicit types only resolved on full body resolve
- [`KT-46359`](https://youtrack.jetbrains.com/issue/KT-46359) Kotlin 1.5 lambda is not Java-serializable by default
- [`KT-49282`](https://youtrack.jetbrains.com/issue/KT-49282) FIR: suspend conversion does not work inside suspend lambda
- [`KT-48953`](https://youtrack.jetbrains.com/issue/KT-48953) FIR: implement diagnostic DELEGATE_USES_EXTENSION_PROPERTY_TYPE_PARAMETER
- [`KT-38813`](https://youtrack.jetbrains.com/issue/KT-38813) FIR: Report INSTANCE_ACCESS_BEFORE_SUPER_CALL diagnostic on receiver usages in secondary constructors headers
- [`KT-49657`](https://youtrack.jetbrains.com/issue/KT-49657) FIR: accidental override with get:JvmName
- [`KT-49655`](https://youtrack.jetbrains.com/issue/KT-49655) FIR: smart cast is not performed after update of var to not-null value in branch
##### Docs & Examples
- [`KT-51086`](https://youtrack.jetbrains.com/issue/KT-51086) \[Docs] \[Build Tools] Allow to configure additional jvm arguments for 'KaptWithoutKotlincTask\`
- [`KT-50563`](https://youtrack.jetbrains.com/issue/KT-50563) \[Docs] \[Build Tools] Deprecate kotlin.experimental.coroutines Gradle DSL option and kotlin.coroutines property
- [`KT-50580`](https://youtrack.jetbrains.com/issue/KT-50580) \[Docs] \[Kotlin/Native] Support instantiation of annotation classes on Native
- [`KT-50874`](https://youtrack.jetbrains.com/issue/KT-50874) \[Docs] \[Language] Add ability to specify generic type parameters as not-null
- [`KT-50564`](https://youtrack.jetbrains.com/issue/KT-50564) \[Docs] \[K/JS] Ensure that [@AfterTest](https://togithub.com/AfterTest) is invoked after the [@Test](https://togithub.com/Test) function completes for asynchronous tests
##### IDE
##### New Features
- [`KTIJ-20169`](https://youtrack.jetbrains.com/issue/KTIJ-20169) Link to What's new in a notification about new Kotlin version
##### Performance Improvements
- [`KTIJ-20568`](https://youtrack.jetbrains.com/issue/KTIJ-20568) Optimize SubpackagesIndexService#hasSubpackages
##### Fixes
- [`KTIJ-13020`](https://youtrack.jetbrains.com/issue/KTIJ-13020) New compiler settings are applied only after the project is reloaded
- [`KTIJ-21154`](https://youtrack.jetbrains.com/issue/KTIJ-21154) StackOverflowError on Companion.extractPotentiallyFixableTypesForExpectedType that causes "Syntax highlighting has been temporarily turned off"
- [`KTIJ-20129`](https://youtrack.jetbrains.com/issue/KTIJ-20129) Load "[@NotNull](https://togithub.com/NotNull) T" types from libraries as definitely non-nullable if any module in project loads such types as definitely non-nullable
- [`KTIJ-9793`](https://youtrack.jetbrains.com/issue/KTIJ-9793) UAST: KotlinAbstractUElement.equals fails for psi-less elements
- [`KTIJ-16203`](https://youtrack.jetbrains.com/issue/KTIJ-16203) UAST: Annotating assignment expression sometimes leads to UnknownKotlinExpression
- [`KTIJ-18720`](https://youtrack.jetbrains.com/issue/KTIJ-18720) UAST: [@Deprecated](https://togithub.com/Deprecated)(level=DeprecationLevel.HIDDEN) makes method visibility be dropped
- [`KTIJ-18039`](https://youtrack.jetbrains.com/issue/KTIJ-18039) [@Deprecated](https://togithub.com/Deprecated)(level=HIDDEN) elements return false for isDeprecated()
- [`KTIJ-18716`](https://youtrack.jetbrains.com/issue/KTIJ-18716) KotlinUMethodWithFakeLightDelegate.hasAnnotation() doesn't find annotations
- [`KTIJ-20220`](https://youtrack.jetbrains.com/issue/KTIJ-20220) Kotlin plugin crashes very often
- [`KTIJ-20308`](https://youtrack.jetbrains.com/issue/KTIJ-20308) Syntax highlighting is temporary suspended for file ... due to internal error
- [`KTIJ-6085`](https://youtrack.jetbrains.com/issue/KTIJ-6085) Exception `Incorrect CachedValue...` with KtUltraLightMethodForSourceDeclaration
- [`KTIJ-18977`](https://youtrack.jetbrains.com/issue/KTIJ-18977) Do not show warning `Outdated bundled kotlin compiler` if there are no compatible plugin with newer compiler
- [`KTIJ-20253`](https://youtrack.jetbrains.com/issue/KTIJ-20253) Consider supporting special highlighting for definitely non-null types
- [`KT-42194`](https://youtrack.jetbrains.com/issue/KT-42194) OOME: Java heap space from incremental compilation
- [`KTIJ-13019`](https://youtrack.jetbrains.com/issue/KTIJ-13019) "Add '-Xopt-in=kotlin.io.path.ExperimentalPathApi' to module untitled1 compiler arguments" only works until the project is reloaded
##### IDE. Completion
- [`KTIJ-20095`](https://youtrack.jetbrains.com/issue/KTIJ-20095) Optimize FilterOutKotlinSourceFilesScope#contains
- [`KTIJ-16250`](https://youtrack.jetbrains.com/issue/KTIJ-16250) Completion of override with return type annotated with TYPE_USE-targeted annotation suggests two duplicate entries
##### IDE. Debugger
- [`KTIJ-20716`](https://youtrack.jetbrains.com/issue/KTIJ-20716) JVM Debugger in common code can't get JVM-specific view on common code and fails
- [`KTIJ-18562`](https://youtrack.jetbrains.com/issue/KTIJ-18562) JVM debugger: coroutineContext.job causes "Failed to generate expression: KtNameReferenceExpression"
- [`KTIJ-20019`](https://youtrack.jetbrains.com/issue/KTIJ-20019) MPP Debugger: NSFE “Field not found” on accessing property with explicit getter from common code in Evaluate expression/Watcher
- [`KTIJ-19990`](https://youtrack.jetbrains.com/issue/KTIJ-19990) MPP Debugger: Evaluate expression for some stdlib in common source set fails with Method threw 'java.lang.ClassNotFoundException' exception.
- [`KTIJ-20929`](https://youtrack.jetbrains.com/issue/KTIJ-20929) MPP Debugger: in a project with single JVM target evaluation of expect function fails with 'NoSuchMethodError' exception in common context
- [`KTIJ-20956`](https://youtrack.jetbrains.com/issue/KTIJ-20956) Debugger: coroutine debugger fails to load sometimes
- [`KTIJ-20775`](https://youtrack.jetbrains.com/issue/KTIJ-20775) MPP Debugger: Evaluate expression for actual typealiases in jvm source set fails with Method threw 'java.lang.ClassNotFoundException' exception.
- [`KTIJ-20712`](https://youtrack.jetbrains.com/issue/KTIJ-20712) MPP Debugger: evaluator fails when evaluating expect function
- [`KTIJ-19344`](https://youtrack.jetbrains.com/issue/KTIJ-19344) K/N debugger shows all types as ObjHeader in variable view.
##### IDE. Gradle Integration
- [`KTIJ-20097`](https://youtrack.jetbrains.com/issue/KTIJ-20097) HMPP+Android Project that depends on pure Android Lib fails to import in IDEA
- [`KTIJ-20756`](https://youtrack.jetbrains.com/issue/KTIJ-20756) MPP targeting Android and JVM reports 'The feature "multi platform projects" is experimental and should be enabled explicitly'
- [`KTIJ-20745`](https://youtrack.jetbrains.com/issue/KTIJ-20745) Gradle: NSEE “Key main is missing in the map.” on project import in AS 212 + Kotlin 1.6.20
- [`KT-47570`](https://youtrack.jetbrains.com/issue/KT-47570) MPP, IDE: kotlin-test-common leaks into dependencies of platform-specific source sets
- [`KTIJ-19541`](https://youtrack.jetbrains.com/issue/KTIJ-19541) IDE: Kotlin Facets aren't created for Gradle projects added via `includeBuild`
- [`KT-48882`](https://youtrack.jetbrains.com/issue/KT-48882) MPP IDE import: Failing cinterop Gradle tasks shall not fail import
- [`KTIJ-18135`](https://youtrack.jetbrains.com/issue/KTIJ-18135) MPP, IDE: False positive "No value passed for parameter" in CommonTest when expect declaration has default value and actual does not
##### IDE. Inspections and Intentions
##### New Features
- [`KTIJ-12437`](https://youtrack.jetbrains.com/issue/KTIJ-12437) Add inspection to detect redundant (obsolete, unused) [@OptIn](https://togithub.com/OptIn) annotations
- [`KTIJ-15780`](https://youtrack.jetbrains.com/issue/KTIJ-15780) Add quickfix for migration of Experimental -> RequiresOptIn
- [`KTIJ-18865`](https://youtrack.jetbrains.com/issue/KTIJ-18865) Provide quick fixes for OptIn markers on forbidden targets
- [`KTIJ-18439`](https://youtrack.jetbrains.com/issue/KTIJ-18439) Make suggestions for applying opt-in quickfixes more distinct
- [`KTIJ-19985`](https://youtrack.jetbrains.com/issue/KTIJ-19985) Provide quickfix for SAFE_CALL_WILL_CHANGE_NULLABILITY diagnostic
##### Fixes
- [`KTIJ-20550`](https://youtrack.jetbrains.com/issue/KTIJ-20550) False positives in "Unnecessary '[@OptIn](https://togithub.com/OptIn)' annotation" inspection
- [`KTIJ-20993`](https://youtrack.jetbrains.com/issue/KTIJ-20993) Quick-fix for NULLABILITY_MISMATCH_BASED_ON_JAVA_ANNOTATIONS leads to unreachable code
- [`KTIJ-20557`](https://youtrack.jetbrains.com/issue/KTIJ-20557) Quick fix to add `Any` as an upper bound for type parameter to make it non-nullable
- [`KTIJ-20827`](https://youtrack.jetbrains.com/issue/KTIJ-20827) Process type mismatch compiler warnings to provide a corresponding quick fix
- [`KTIJ-12578`](https://youtrack.jetbrains.com/issue/KTIJ-12578) "Make abstract" quick fix for missing abstract members implementations could warn of potentially broken inheritance
- [`KTIJ-20425`](https://youtrack.jetbrains.com/issue/KTIJ-20425) Quick fix to replace `@NotNull` parameter type `T` with a definitely non-nullable type `T & Any`
- [`KTIJ-19997`](https://youtrack.jetbrains.com/issue/KTIJ-19997) Inspection "Possibly blocking call in non-blocking context could lead to thread starvation" suggests "Wrap call in 'withContext'" resulting in red code
- [`KTIJ-18291`](https://youtrack.jetbrains.com/issue/KTIJ-18291) Quickfix "Add [@OptIn](https://togithub.com/OptIn)() annotation" adds the annotation to primary constructor when invoked on primary constructor parameter
- [`KTIJ-19512`](https://youtrack.jetbrains.com/issue/KTIJ-19512) Implement IDE support for new rules of deprecation inheritance
- [`KTIJ-20156`](https://youtrack.jetbrains.com/issue/KTIJ-20156) Exception when applying 'Convert to with'
- [`KTIJ-20290`](https://youtrack.jetbrains.com/issue/KTIJ-20290) Forbid "move to constructor" intention if class contains secondary constructor
- [`KTIJ-20288`](https://youtrack.jetbrains.com/issue/KTIJ-20288) Forbid "move to constructor" intention for actual classes with actual constructor
- [`KT-49736`](https://youtrack.jetbrains.com/issue/KT-49736) Introduce import alias fails when qualifier is unresolved
- [`KTIJ-18743`](https://youtrack.jetbrains.com/issue/KTIJ-18743) "Redundant nullable return type" applied on `actual` method doesn't change the signature of `expect`
- [`KTIJ-12343`](https://youtrack.jetbrains.com/issue/KTIJ-12343) Inspection "Sealed sub-class has no state and no overridden equals" is applied incorrectly to expect/actual declarations of sealed classes with nested subclasses
- [`KTIJ-19406`](https://youtrack.jetbrains.com/issue/KTIJ-19406) The "Add [@OptIn](https://togithub.com/OptIn)(...)" quick fix does not shorten the annotation when adding an argument to the existing annotation
- [`KTIJ-12351`](https://youtrack.jetbrains.com/issue/KTIJ-12351) `generate equals & hashCode() by identity` intention generates incompilable code for multiplatform project modules
- [`KTIJ-13227`](https://youtrack.jetbrains.com/issue/KTIJ-13227) Forbid "move property to constructor" for actual classes with actual constructor having at least one parameter already
- [`KTIJ-11328`](https://youtrack.jetbrains.com/issue/KTIJ-11328) No quick fixes are suggested for annotation from experimental API used with file target
- [`KTIJ-14427`](https://youtrack.jetbrains.com/issue/KTIJ-14427) Meta-annotation value isn't updated for all the corresponding parts of a multiplatform annotation
- [`KTIJ-19735`](https://youtrack.jetbrains.com/issue/KTIJ-19735) NSME org.jetbrains.kotlin.idea.quickfix.KotlinSingleIntentionActionFactory org.jetbrains.kotlin.idea.quickfix.RemoveModifierFix on IJ212 + Kotlin master
##### IDE. Navigation
- [`KTIJ-18145`](https://youtrack.jetbrains.com/issue/KTIJ-18145) IDE freeze on 'Show Usage'
##### IDE. Refactorings. Extract Function
- [`KTIJ-10026`](https://youtrack.jetbrains.com/issue/KTIJ-10026) Refactor / Extract function: Adds unnecessary nullability annotations for parameters coming from `NotNull` or `Nullable` Java methods
- [`KTIJ-15823`](https://youtrack.jetbrains.com/issue/KTIJ-15823) Refactor / Extract Function: resulted declaration gets no [@OptIn](https://togithub.com/OptIn) from original function when necessary
##### IDE. Refactorings. Move
- [`KTIJ-5661`](https://youtrack.jetbrains.com/issue/KTIJ-5661) \[Tests] MoveRefactoring: Fix ignored incorrect tests of crossmodule declaration moving
##### IDE. Wizards
- [`KTIJ-19232`](https://youtrack.jetbrains.com/issue/KTIJ-19232) New project wizard: delete MPP Mobile-Library and Application templates
- [`KTIJ-20878`](https://youtrack.jetbrains.com/issue/KTIJ-20878) Unable to create project with Kotlin Project Wizard when JDK 17 is used.
- [`KTIJ-20244`](https://youtrack.jetbrains.com/issue/KTIJ-20244) Compose MPP project from wizard requires minCompileSdk=31
- [`KTIJ-20781`](https://youtrack.jetbrains.com/issue/KTIJ-20781) Update kotlin-wrappers version in wizard
##### JS. Tools
- [`KT-47387`](https://youtrack.jetbrains.com/issue/KT-47387) KJS: Support Apple Silicon for node distrib download
##### JavaScript
##### New Features
- [`KT-44494`](https://youtrack.jetbrains.com/issue/KT-44494) KJS / IR: Allow enum classes to be exported
- [`KT-43224`](https://youtrack.jetbrains.com/issue/KT-43224) KJS: Allow using inline classes in external types
- [`KT-35100`](https://youtrack.jetbrains.com/issue/KT-35100) Make Char inline class in K/JS
- [`KT-42936`](https://youtrack.jetbrains.com/issue/KT-42936) KJS IR: Support js-code test directives similar to legacy
- [`KT-47525`](https://youtrack.jetbrains.com/issue/KT-47525) KJS / IR: Support protected members in d.ts generation
- [`KT-50110`](https://youtrack.jetbrains.com/issue/KT-50110) KJS / IR: Enable properties lazy initialization by default
##### Performance Improvements
- [`KT-46443`](https://youtrack.jetbrains.com/issue/KT-46443) KJS / IR: Improve `CharArray` and `Char` performance
- [`KT-45665`](https://youtrack.jetbrains.com/issue/KT-45665) KJS / IR: `equals` on inline value classes is boxed
- [`KT-43644`](https://youtrack.jetbrains.com/issue/KT-43644) KJS / IR: Avoid creating lambda classes
##### Fixes
- [`KT-51685`](https://youtrack.jetbrains.com/issue/KT-51685) KJS / IR: TypeError: collection.iterator_jk1svi_k$ regression in Kotlin 1.6.20-RC2
- [`KT-51523`](https://youtrack.jetbrains.com/issue/KT-51523) KJS IR: "Uncaught TypeError: a.\_get_length\_\_2347802853\_w7ahp7\_k$ is not a function"
- [`KT-51700`](https://youtrack.jetbrains.com/issue/KT-51700) KJS / IR: Compiler uses wrong function with List
- [`KT-51222`](https://youtrack.jetbrains.com/issue/KT-51222) KJS / IR: "RangeError: Maximum call stack size exceeded": Default function overloads marked with [@JsExport](https://togithub.com/JsExport) are broken
- [`KT-45054`](https://youtrack.jetbrains.com/issue/KT-45054) KJS: Export secondary constructors as class static methods
- [`KT-37916`](https://youtrack.jetbrains.com/issue/KT-37916) KJS: .d.ts generation not working for enum classes
- [`KT-48199`](https://youtrack.jetbrains.com/issue/KT-48199) KJS / IR: Improve error message for linkage problems
- [`KT-51030`](https://youtrack.jetbrains.com/issue/KT-51030) KJS / IR: internal class that implements public interface is missing getters
- [`KT-45434`](https://youtrack.jetbrains.com/issue/KT-45434) KJS: "WRONG_EXPORTED_DECLARATION" when using `JsExport` on interfaces
- [`KT-50934`](https://youtrack.jetbrains.com/issue/KT-50934) KJS / IR: Re-export all JS-exports from the main module for the multi-module mode
- [`KT-45620`](https://youtrack.jetbrains.com/issue/KT-45620) KJS / IR: Remainder of division of `Int.MIN_VALUE` by -1 is negative zero (-0)
- [`KT-44981`](https://youtrack.jetbrains.com/issue/KT-44981) KJS / IR crashes on `kotlin.js.js` calls with complex constexpr
- [`KT-41964`](https://youtrack.jetbrains.com/issue/KT-41964) KJS IR: Reference to local variable and parameter from js fun could be broken unexpectedly
- [`KT-50682`](https://youtrack.jetbrains.com/issue/KT-50682) Kotlin/JS: IR + IC: TypeError "Cannot read properties of undefined" when properties from different sources refer one another in initializers
- [`KT-50175`](https://youtrack.jetbrains.com/issue/KT-50175) Kotlin/JS, IR: with incremental compilation top level properties initialization is not lazy
- [`KT-40236`](https://youtrack.jetbrains.com/issue/KT-40236) KJS: IR. Invalid override for external field with [@JsName](https://togithub.com/JsName)
- [`KT-46525`](https://youtrack.jetbrains.com/issue/KT-46525) KJS / IR: Generate context-dependent names for lambdas and object expressions
- [`KT-49779`](https://youtrack.jetbrains.com/issue/KT-49779) KJS / IR: Exported abstract class implementing interface not export interfaces member in d.ts
- [`KT-49773`](https://youtrack.jetbrains.com/issue/KT-49773) KJS / IR: Exported enum implementing interface
- [`KT-41912`](https://youtrack.jetbrains.com/issue/KT-41912) KJS / IR: generates invalid defineProperty methods for class hierarchies
- [`KT-46225`](https://youtrack.jetbrains.com/issue/KT-46225) KJS IR: tailrec function with capturing lambda in default parameter value leads to UninitializedPropertyAccessException at compile time
- [`KT-50528`](https://youtrack.jetbrains.com/issue/KT-50528) Kotlin/JS: IR + IC: TypeError: "combined.get_icpjjy_k$ is not a function" for code calling `GlobalScope.launch {}`
- [`KT-50512`](https://youtrack.jetbrains.com/issue/KT-5051
Configuration
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This PR contains the following updates:
1.4.32
->1.6.21
Release Notes
JetBrains/kotlin
### [`v1.6.21`](https://togithub.com/JetBrains/kotlin/releases/tag/v1.6.21) ##### Changelog ##### Compiler - [`KT-51979`](https://youtrack.jetbrains.com/issue/KT-51979) "AssertionError: No modifier list, but modifier has been found by the analyzer" exception on incorrect Java interface override - [`KT-51893`](https://youtrack.jetbrains.com/issue/KT-51893) Duplicated \[OVERRIDE_DEPRECATION] on overridden properties - [`KT-51927`](https://youtrack.jetbrains.com/issue/KT-51927) Native: `The symbol of unexpected type encountered during IR deserialization` error when multiple libraries have non-conflicting declarations with the same name - [`KT-51843`](https://youtrack.jetbrains.com/issue/KT-51843) Functional interface constructor references are incorrectly allowed in 1.6.20 without any compiler flags - [`KT-51672`](https://youtrack.jetbrains.com/issue/KT-51672) JVM IR: Inline class mangling issue in interface default methods split across multiple modules - [`KT-51711`](https://youtrack.jetbrains.com/issue/KT-51711) Compiler warning is displayed in case there is 'if' else branch used with elvis - [`KT-49317`](https://youtrack.jetbrains.com/issue/KT-49317) "IllegalStateException: Parent of this declaration is not a class: FUN LOCAL_FUNCTION_FOR_LAMBDA" with parameter of suspend type with the default parameter ##### IDE. Native - [`KTIJ-20819`](https://youtrack.jetbrains.com/issue/KTIJ-20819) Native debugging support: "Debug is impossible without lldb binaries required by Kotlin/Native" on "Attach to process" ##### JavaScript - [`KT-52010`](https://youtrack.jetbrains.com/issue/KT-52010) K/JS IR: both flows execute when using elvis operator - [`KT-51973`](https://youtrack.jetbrains.com/issue/KT-51973) KJS / IR overridden properties of inherited interface missing - [`KT-50504`](https://youtrack.jetbrains.com/issue/KT-50504) KJS / IR: Transpiled JS incorrectly uses the unscrambled names of internal fields ##### Tools. Gradle - [`KT-51837`](https://youtrack.jetbrains.com/issue/KT-51837) kotlin-gradle-plugin:1.6.20 fails xray scan on shadowed Gson 2.8.6. ##### Tools. Gradle. Multiplatform - [`KT-51810`](https://youtrack.jetbrains.com/issue/KT-51810) MPP / Gradle: Dependency locking fails with 1.6.20 - [`KT-51765`](https://youtrack.jetbrains.com/issue/KT-51765) com.android.lint in multiplatform project without android target should not trigger warning ##### Checksums | File | Sha256 | | --- | --- | | kotlin-compiler-1.6.21.zip | 632166fed89f3f430482f5aa07f2e20b923b72ef688c8f5a7df3aa1502c6d8ba | | kotlin-native-linux-x86\_64-1.6.21.tar.gz | 74f9aa3eaefb02cb942feeca8e4cfca78973faf86495884d5aa7ac4dda766ba9 | | kotlin-native-macos-x86\_64-1.6.21.tar.gz | 08720b4bf1ed41674866f212fc6da1dd6b0e7259e9bad8e194f32b24b4a13d15 | | kotlin-native-macos-aarch64-1.6.21.tar.gz | 4c5c4371d03f5aad541dd1d803fb34e0e97ee23f11358b0019e212d316d62d0c | | kotlin-native-windows-x86\_64-1.6.21.zip | 9327eb3317ce636c0652b419836c4fffa0654c2bded71aff70c90635d4be4ab7 | ### [`v1.6.20`](https://togithub.com/JetBrains/kotlin/blob/HEAD/ChangeLog.md#1620) ##### Compiler ##### New Features - [`KT-48217`](https://youtrack.jetbrains.com/issue/KT-48217) Add an annotation JvmDefaultWithCompatibility to allow generating DefaultImpls classes if -Xjvm-default=all option is used - [`KT-49929`](https://youtrack.jetbrains.com/issue/KT-49929) \[FIR] Support programmatic creation of annotation class instances - [`KT-49276`](https://youtrack.jetbrains.com/issue/KT-49276) Warn about potential overload resolution change if Range/Progression starts implementing Collection - [`KT-47902`](https://youtrack.jetbrains.com/issue/KT-47902) Do not propagate method deprecation through overrides - [`KT-49857`](https://youtrack.jetbrains.com/issue/KT-49857) Require Xcode 13 for building Kotlin/Native compiler - [`KT-47701`](https://youtrack.jetbrains.com/issue/KT-47701) Support instantiation of annotation classes on Native - [`KT-46085`](https://youtrack.jetbrains.com/issue/KT-46085) Support experimental parallel compilation of a single module in the JVM backend - [`KT-46603`](https://youtrack.jetbrains.com/issue/KT-46603) Generate SAM-conversions to Java interfaces extending 'java.io.Serializable' as serializable using java.lang.invoke.LambdaMetafactory ##### Performance Improvements - [`KT-50156`](https://youtrack.jetbrains.com/issue/KT-50156) HMPP: Slow frontend/ide performance in OKIO (ExpectActualDeclarationChecker) - [`KT-50073`](https://youtrack.jetbrains.com/issue/KT-50073) Performance regression in adapted function references - [`KT-50076`](https://youtrack.jetbrains.com/issue/KT-50076) Performance regression in super call to an interface member in $DefaultImpls - [`KT-50080`](https://youtrack.jetbrains.com/issue/KT-50080) Performance regression in string template with generic property with primitive upper bound - [`KT-50084`](https://youtrack.jetbrains.com/issue/KT-50084) Performance regression in concatenation with 'String?' - [`KT-50078`](https://youtrack.jetbrains.com/issue/KT-50078) Performance regression in for-in-array loop - [`KT-50039`](https://youtrack.jetbrains.com/issue/KT-50039) Performance regression in inner class constructor call with default parameters - [`KT-48784`](https://youtrack.jetbrains.com/issue/KT-48784) An anonymous class has fields for variables that are only used in the constructor - [`KT-42010`](https://youtrack.jetbrains.com/issue/KT-42010) Generate IINC instruction for postfix increment in JVM_IR - [`KT-48433`](https://youtrack.jetbrains.com/issue/KT-48433) JVM_IR don't generate null check on 'this$0' parameter of inner class constructor - [`KT-48435`](https://youtrack.jetbrains.com/issue/KT-48435) JVM_IR ConstForLoopBenchmark performance regression - [`KT-48507`](https://youtrack.jetbrains.com/issue/KT-48507) JVM_IR ForLoopBenchmark regressions - [`KT-48640`](https://youtrack.jetbrains.com/issue/KT-48640) Performance regression in 'longDownToLoop' benchmarks - [`KT-29822`](https://youtrack.jetbrains.com/issue/KT-29822) Generate specialized bytecode for loops withIndex over unsigned arrays - [`KT-48669`](https://youtrack.jetbrains.com/issue/KT-48669) Generate optimizable counter loop for loops over indices of unsigned arrays - [`KT-49444`](https://youtrack.jetbrains.com/issue/KT-49444) Possible performance degradation with UInt downTo loop - [`KT-48944`](https://youtrack.jetbrains.com/issue/KT-48944) Possible performance regression with comparison of local KFunctions - [`KT-17111`](https://youtrack.jetbrains.com/issue/KT-17111) Eliminate redundant store/load instructions when the value stored is simple - [`KT-36837`](https://youtrack.jetbrains.com/issue/KT-36837) Generate more compact code for for-in-range loop in JVM_IR - [`KT-48947`](https://youtrack.jetbrains.com/issue/KT-48947) JVM / IR Possible performance regression with string templates - [`KT-48931`](https://youtrack.jetbrains.com/issue/KT-48931) JVM / IR: Performance degradation with string concatenation - [`KT-36654`](https://youtrack.jetbrains.com/issue/KT-36654) Generate more compact bytecode for safe call in JVM_IR ##### Fixes - [`KT-24643`](https://youtrack.jetbrains.com/issue/KT-24643) Prohibit using a type parameter declared for an extension property inside delegate - [`KT-51747`](https://youtrack.jetbrains.com/issue/KT-51747) Make `KtCallableDeclaration.getContextReceivers` default to preserve compatibility - [`KT-49658`](https://youtrack.jetbrains.com/issue/KT-49658) NI: False negative TYPE_MISMATCH on nullable type with `when` - [`KT-43493`](https://youtrack.jetbrains.com/issue/KT-43493) NI: [@BuilderInference](https://togithub.com/BuilderInference) prevents compilation error of "Operator '==' cannot be applied to 'Long' and 'Int'" - [`KT-51649`](https://youtrack.jetbrains.com/issue/KT-51649) Kotlin/Native: reduce binary size of watchosArm32 and iosArm32 targets by limiting inlining of runtime functions - [`KT-48626`](https://youtrack.jetbrains.com/issue/KT-48626) JVM IR: incorrect behavior for captured for-loop parameter since 1.6.20-dev-723 - [`KT-51036`](https://youtrack.jetbrains.com/issue/KT-51036) JVM / IR: "NullPointerException: Parameter specified as non-null is null" with synchronized and companion object - [`KT-51471`](https://youtrack.jetbrains.com/issue/KT-51471) Native: incorrect debug information when inheriting suspend fun invoke implementation - [`KT-51352`](https://youtrack.jetbrains.com/issue/KT-51352) "ClassCastException: class ScopeCoroutine cannot be cast to class Iterable" caused by coroutines and context receivers - [`KT-51271`](https://youtrack.jetbrains.com/issue/KT-51271) "ArrayIndexOutOfBoundsException: Index 3 out of bounds for length 3" with inlining of context function - [`KT-47084`](https://youtrack.jetbrains.com/issue/KT-47084) JVM IR: "AssertionError: inconsistent parent function for CLASS LAMBDA_IMPL" with tailrec function default parameter nested inline lambda - [`KT-30616`](https://youtrack.jetbrains.com/issue/KT-30616) Script: "Don't know how to generate outer expression" for top-level variable reference from static context (companion object, enum) - [`KT-50520`](https://youtrack.jetbrains.com/issue/KT-50520) "NPE: containingDeclaration.ac…lDeclarationType.REGULAR) must not be null" with implicit type on self-referencing lambda in a builder - [`KT-51353`](https://youtrack.jetbrains.com/issue/KT-51353) IncompatibleClassChangeError: Expected non-static field com.soywiz.korim.color.Colors.BLACK - [`KT-48945`](https://youtrack.jetbrains.com/issue/KT-48945) JVM IR: special bridge for `get` is not generated in a Map subclass - [`KT-48499`](https://youtrack.jetbrains.com/issue/KT-48499) Interface call with an inline/value parameter generates AbstractMethodError after rebuilding the module, but NOT the file. - [`KT-49998`](https://youtrack.jetbrains.com/issue/KT-49998) JVM: missing default value for annotation parameter of an unsigned type - [`KT-49793`](https://youtrack.jetbrains.com/issue/KT-49793) JVM: `IncompatibleClassChangeError: Expected non-static field` when property delegation uses receiver of another delegated property - [`KT-51302`](https://youtrack.jetbrains.com/issue/KT-51302) Kotlin/Native 1.6.20-M1 compiler fails because of assertion in NativeAnnotationImplementationTransformer - [`KT-51148`](https://youtrack.jetbrains.com/issue/KT-51148) "AssertionError: At this stage there should be no remaining variables with proper constraints" caused by two type parameters - [`KT-50970`](https://youtrack.jetbrains.com/issue/KT-50970) Kotlin/Native: use arm instruction set instead of thumb-2 for iosArm32 and watchosArm32 targets - [`KT-50843`](https://youtrack.jetbrains.com/issue/KT-50843) Kotlin/Native: LLVM constant merge pass does not work for Kotlin constants - [`KT-51157`](https://youtrack.jetbrains.com/issue/KT-51157) JVM / IR: "IndexOutOfBoundsException: Index: 1, Size: 1" caused by interface hierarchy and UInt method parameter - [`KT-50498`](https://youtrack.jetbrains.com/issue/KT-50498) Exception after analysing an erroneous lambda - [`KT-50258`](https://youtrack.jetbrains.com/issue/KT-50258) `equals()` returns `false` on the same enum instances if we check it for the second time in `when` - [`KT-51062`](https://youtrack.jetbrains.com/issue/KT-51062) Progressions resolve changing warning isn't reported for Java methods - [`KT-48544`](https://youtrack.jetbrains.com/issue/KT-48544) JVM / IR: "UnsupportedOperationException: Unknown structure of ADAPTER_FOR_CALLABLE_REFERENCE" with callable reference `::arrayOf` - [`KT-50978`](https://youtrack.jetbrains.com/issue/KT-50978) \[Native] Error while building static cache: NoSuchElementException at IrTypeInlineClassesSupport.getInlinedClassUnderlyingType(InlineClasses.kt:341) - [`KT-50977`](https://youtrack.jetbrains.com/issue/KT-50977) \[Native] Error while building static cache: IllegalStateException: Class CLASS ENUM_ENTRY is not found at KonanIrlinkerKt.findClass(KonanIrlinker.kt:229) - [`KT-50976`](https://youtrack.jetbrains.com/issue/KT-50976) \[Native] Error while building static cache: IllegalStateException: No descriptor found at DescriptorByIdSignatureFinder.findDescriptorForPublicSignature(DescriptorByIdSignatureFinder.kt:157) - [`KT-51040`](https://youtrack.jetbrains.com/issue/KT-51040) Type inference fails on 1.6: "Cannot use 'CapturedType(\*)' as reified type parameter" with EnumSet and elvis operator - [`KT-51080`](https://youtrack.jetbrains.com/issue/KT-51080) Line number in mapping for the first instruction is lost - [`KT-49526`](https://youtrack.jetbrains.com/issue/KT-49526) JVM IR: Function reference with non-denotable intersection type argument is not inlined and is incorrectly approximated - [`KT-50399`](https://youtrack.jetbrains.com/issue/KT-50399) Error: unexpected variance in super type argument: out [@0](https://togithub.com/0) - [`KT-50649`](https://youtrack.jetbrains.com/issue/KT-50649) JVM IR: ClassCastException when returning Result as generic type - [`KT-50617`](https://youtrack.jetbrains.com/issue/KT-50617) JVM IR: java.lang.IndexOutOfBoundsException "Empty list doesn't contain element at index 0" when class and interface have the same name and extension function is used - [`KT-50856`](https://youtrack.jetbrains.com/issue/KT-50856) SAM conversion generates invalid bytecode for generics - [`KT-45693`](https://youtrack.jetbrains.com/issue/KT-45693) False negative INCOMPATIBLE_TYPES with `when` with generic subject - [`KT-49903`](https://youtrack.jetbrains.com/issue/KT-49903) JVM IR: InlineOnly optimization leads to behavior change for println with mutating System.out - [`KT-51022`](https://youtrack.jetbrains.com/issue/KT-51022) Fix error messages for resolution ambiguity with stub types - [`KT-51035`](https://youtrack.jetbrains.com/issue/KT-51035) PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression:" caused by recursive call of java function - [`KT-50797`](https://youtrack.jetbrains.com/issue/KT-50797) Implement fix for false negative UPPER_BOUND_VIOLATED with generic typealias using not all type parameters as arguments for underlying type - [`KT-50878`](https://youtrack.jetbrains.com/issue/KT-50878) Usage of contextual declarations from third-party library is allowed without `-Xcontext-receivers` - [`KT-49829`](https://youtrack.jetbrains.com/issue/KT-49829) Wrong "cast can never succeed" diagnostic with builder inference - [`KT-49828`](https://youtrack.jetbrains.com/issue/KT-49828) Improve builder inference diagnostics with overload resolution ambiguity - [`KT-50989`](https://youtrack.jetbrains.com/issue/KT-50989) CCE cause by EmptySubstitutor in ResolutionWithStubTypesChecker - [`KT-49729`](https://youtrack.jetbrains.com/issue/KT-49729) Implement deprecation warning for private constructors of sealed classes - [`KT-49349`](https://youtrack.jetbrains.com/issue/KT-49349) Implement deprecation for invalid if as expression in rhs of elvis - [`KT-46285`](https://youtrack.jetbrains.com/issue/KT-46285) \[SEALED_SUPERTYPE_IN_LOCAL_CLASS] Error message isn't adopted to local objects and sealed interfaces - [`KT-49002`](https://youtrack.jetbrains.com/issue/KT-49002) Allow OptIn marker on override if base class has the same marker - [`KT-48899`](https://youtrack.jetbrains.com/issue/KT-48899) Report warnings on overrides with wrong types nullability - [`KT-49461`](https://youtrack.jetbrains.com/issue/KT-49461) Implement prohibitation of access to members of companion of enum class from initializers of entries of this enum - [`KT-49754`](https://youtrack.jetbrains.com/issue/KT-49754) Kotlin/JS: [@JsExport](https://togithub.com/JsExport) on enum class reports NON_EXPORTABLE_TYPE warning - [`KT-49598`](https://youtrack.jetbrains.com/issue/KT-49598) Misleading error message "Using [@JvmRecord](https://togithub.com/JvmRecord) is only allowed with -jvm-target 15 and -Xjvm-enable-preview flag enabled" - [`KT-44133`](https://youtrack.jetbrains.com/issue/KT-44133) Inline classes: class literal in annotation arguments uses underlying type - [`KT-47703`](https://youtrack.jetbrains.com/issue/KT-47703) ClassCastException: Programmatically created annotation can't hold Array\- [`KT-51222`](https://youtrack.jetbrains.com/issue/KT-51222) KJS / IR: "RangeError: Maximum call stack size exceeded": Default function overloads marked with [@JsExport](https://togithub.com/JsExport) are broken - [`KT-45054`](https://youtrack.jetbrains.com/issue/KT-45054) KJS: Export secondary constructors as class static methods - [`KT-37916`](https://youtrack.jetbrains.com/issue/KT-37916) KJS: .d.ts generation not working for enum classes - [`KT-48199`](https://youtrack.jetbrains.com/issue/KT-48199) KJS / IR: Improve error message for linkage problems - [`KT-51030`](https://youtrack.jetbrains.com/issue/KT-51030) KJS / IR: internal class that implements public interface is missing getters - [`KT-45434`](https://youtrack.jetbrains.com/issue/KT-45434) KJS: "WRONG_EXPORTED_DECLARATION" when using `JsExport` on interfaces - [`KT-50934`](https://youtrack.jetbrains.com/issue/KT-50934) KJS / IR: Re-export all JS-exports from the main module for the multi-module mode - [`KT-45620`](https://youtrack.jetbrains.com/issue/KT-45620) KJS / IR: Remainder of division of `Int.MIN_VALUE` by -1 is negative zero (-0) - [`KT-44981`](https://youtrack.jetbrains.com/issue/KT-44981) KJS / IR crashes on `kotlin.js.js` calls with complex constexpr - [`KT-41964`](https://youtrack.jetbrains.com/issue/KT-41964) KJS IR: Reference to local variable and parameter from js fun could be broken unexpectedly - [`KT-50682`](https://youtrack.jetbrains.com/issue/KT-50682) Kotlin/JS: IR + IC: TypeError "Cannot read properties of undefined" when properties from different sources refer one another in initializers - [`KT-50175`](https://youtrack.jetbrains.com/issue/KT-50175) Kotlin/JS, IR: with incremental compilation top level properties initialization is not lazy - [`KT-40236`](https://youtrack.jetbrains.com/issue/KT-40236) KJS: IR. Invalid override for external field with [@JsName](https://togithub.com/JsName) - [`KT-46525`](https://youtrack.jetbrains.com/issue/KT-46525) KJS / IR: Generate context-dependent names for lambdas and object expressions - [`KT-49779`](https://youtrack.jetbrains.com/issue/KT-49779) KJS / IR: Exported abstract class implementing interface not export interfaces member in d.ts - [`KT-49773`](https://youtrack.jetbrains.com/issue/KT-49773) KJS / IR: Exported enum implementing interface - [`KT-41912`](https://youtrack.jetbrains.com/issue/KT-41912) KJS / IR: generates invalid defineProperty methods for class hierarchies - [`KT-46225`](https://youtrack.jetbrains.com/issue/KT-46225) KJS IR: tailrec function with capturing lambda in default parameter value leads to UninitializedPropertyAccessException at compile time - [`KT-50528`](https://youtrack.jetbrains.com/issue/KT-50528) Kotlin/JS: IR + IC: TypeError: "combined.get_icpjjy_k$ is not a function" for code calling `GlobalScope.launch {}` - [`KT-50512`](https://youtrack.jetbrains.com/issue/KT-5051
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