Update kotlin

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
com.google.devtools.ksp (source)	2.1.10-1.0.30 -> 2.3.0
org.jetbrains.kotlinx:kotlinx-serialization-json	1.8.0 -> 1.9.0
org.jetbrains.kotlinx:kotlinx-datetime	0.6.2 -> 0.7.1-0.6.x-compat
org.jetbrains.kotlinx:kotlinx-coroutines-test	1.10.1 -> 1.10.2
org.jetbrains.kotlinx:kotlinx-coroutines-android	1.10.1 -> 1.10.2
org.jetbrains.kotlin.plugin.serialization (source)	2.1.10 -> 2.2.21
org.jetbrains.kotlin.jvm (source)	2.1.10 -> 2.2.21
org.jetbrains.kotlin.android (source)	2.1.10 -> 2.2.21
org.jetbrains.kotlin.plugin.compose (source)	2.1.10 -> 2.2.21
org.jetbrains.kotlin:kotlin-gradle-plugin (source)	2.1.10 -> 2.2.21
org.jetbrains.kotlin:kotlin-stdlib-jdk8 (source)	2.1.10 -> 2.2.21

---

Release Notes

google/ksp (com.google.devtools.ksp)

v2.3.0

Compare Source

What's Changed

• KSP1 has been deprecated #​2657
• KSP is now independent of Kotlin Versions #​2658

Full Changelog: google/ksp@2.2.20-2.0.4...2.3.0

v2.2.20-2.0.4

Compare Source

What's Changed

• Unable to build on AGP 8.11.1 using KSP 2.2.20-2.0.3 due to class cast exception #​2614

• Resolver#getJvmCheckedException(KSPropertyAccessor) throws IllegalArgumentException #​2548

• ClassCastException when building with 2.2.20-2.0.3 #​2598

• Replace KaFirStopWorldCacheCleaner with no-op implementation #​2626

• BuildConfig values are not available during annotation process after upgrading ksp from 2.2.10-2.0.2 -> 2.2.20-2.0.3 #​2597

• Missing Gradle task wiring with 2.2.20-2.0.3 #​2595

• 2.2.20-2.0.3 + protobufJavalite build errors #​2596

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.2.20-2.0.3...2.2.20-2.0.4

v2.2.20-2.0.3

Compare Source

What's Changed

• Removed usages of deprecated KGP ApiVersion - #​2400
• Android integration for KSP has moved on to the new Variant API - #​2250
• Runtime warning was added for projects that opt out of KSP2 - #​2538
• AGP version against which KSP is compiled has been upgraded - #​2552

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.1.21-2.0.2...2.2.20-2.0.3

v2.2.20-2.0.2

Compare Source

What's Changed

• Kotlin version: 2.2.20 by @​mkmuir0 in #​2590

Full Changelog: google/ksp@2.2.20-RC2-2.0.2...2.2.20-2.0.2

v2.2.10-2.0.2

Compare Source

What's Changed

• Kotlin version: 2.2.10 by @​mkmuir0 in #​2555

Full Changelog: google/ksp@2.2.10-RC2-2.0.2...2.2.10-2.0.2

v2.2.0-2.0.2

Compare Source

What's Changed

• Kotlin version: 2.2.0 by @​mkmuir0 in #​2507

Full Changelog: google/ksp@2.2.0-RC3-2.0.2...2.2.0-2.0.2

v2.1.21-2.0.2

Compare Source

What's Changed

KSP1: use new mangling scheme for inline classes #​2446
KSP task (non-)registration happens too soon #​1789
[ksp2] Resolver.getJvmName wrong for properties starts with is #​2275
Inlined JVM name is not correct #​1493
[KSP2] Annotation values of inner annotations shouldn't be marked as default #​2437
Properly support @​ all annotation use site target #​2438

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.1.21-2.0.1...2.1.21-2.0.2

v2.1.21-2.0.1

Compare Source

What's Changed

• Bump Kotlin version to 2.1.21 by @​mkmuir0 in #​2448

Full Changelog: google/ksp@2.1.21-RC2-2.0.1...2.1.21-2.0.1

v2.1.20-2.0.1

Compare Source

What's Changed

• [KSP2] Annotation values shouldn't be marked as default (synthetic origin) broken after PR #​2424 in #​2425
• [KSP2] Wrong internal method name with custom moduleName compiler option in #​2415
• [KSP2] getJvmName for internal method did not sanitize java identifiers in #​2413
• [KSP2] Annotation and argument's origin is wrong in #​2412
• [KSP2] functionKind is MEMBER for static method in interface in Java in #​2410
• KSP2 Generated .class files are not added to the classpath in #​2365
• When I write specific code, KSP throws an Unexpected class for KtSymbol error. in #​2303

Contributors

Thanks to everyone who reported bugs and participated in discussions!

Full Changelog: google/ksp@2.1.20-2.0.0...2.1.20-2.0.1

v2.1.20-2.0.0

Compare Source

What's Changed

• Bumped version to 2.0.0 and enabled KSP2 by default!
• No-op blockOtherCompilerPlugins #​2397
• A couple of fixes to compilation avoidance #​2401
• KSTypeReferenceResolvedImpl.toString(): render unexpanded #​2393

Full Changelog: google/ksp@2.1.20-1.0.32...2.1.20-2.0.0

v2.1.20-1.0.32

Compare Source

What's Changed

#​2379 [KSP2] resolved type of vararg parameter in functions changed vs KSP1
#​2358 [KSP2] Annotation missing from property when VALUE_PARAMETER target is used.

And various performance optimizations!

v2.1.20-1.0.31

Compare Source

What's Changed

• Update github actions permissions for release on 1.0.31-release by @​ting-yuan in #​2383
• Bump Kotlin version to 2.1.20 by @​mkmuir0 in #​2384

Full Changelog: google/ksp@2.1.20-RC2-1.0.31...2.1.20-1.0.31

v2.1.10-1.0.31

Compare Source

Bug Fixes

• [KSP2] KSPropertyDeclaration#type for typealias does not match its declaration. #​2345
• Incorrect isMutable on KSPropertyDeclaration from a JAVA_LIB in 2.1.10-1.0.30 #​2346
• KSP breaks compilation avoidance #​2347

Kotlin/kotlinx.serialization (org.jetbrains.kotlinx:kotlinx-serialization-json)

v1.9.0

==================

This release updates Kotlin version to 2.2.0, includes several bugfixes and provides serializers for kotlin.time.Instant.

Add kotlin.time.Instant serializers

Instant class was moved from kotlinx-datetime library to Kotlin standard library.
As a result, kotlinx-datetime 0.7.0 no longer has serializers for the Instant class.
To use new kotlin.time.Instant class in your @​Serializable classes,
you can use this 1.9.0 kotlinx-serialization version (Kotlin 2.2 is required).
You can choose between default InstantSerializer which uses its string representation,
or specify InstantComponentSerializer that represents instant as its components.
See details in the PR.

Other bugfixes

• Fix resize in JsonPath (#​2995)
• Fixed proguard rules for obfuscation to work correctly (#​2983)

v1.8.1

==================

This release updates Kotlin version to 2.1.20, while also providing several important improvements
and bugfixes.

Improvements

• Implemented encoding null in key and value of a map in Protobuf (#​2910)
• Make type argument in JsonTransformingSerializer nullable (#​2911)
• Use SPDX identifier in POMs (#​2936) (thanks to Leon Linhart)
• Add watchosDeviceArm64 to Okio integration module (#​2920) (thanks to Daniel Santiago)
• Update kotlinx-io version to 0.6.0 (#​2933) (thanks to Piotr Krzemiński)

Bugfixes

• Fix incorrect enum coercion during deserialization from JsonElement (#​2962)
• Supply proper equals(), hashCode(), and toString() for SerialDescriptor() wrapper (#​2942)
• Do not encode empty packed collections in protobuf (#​2907)

Kotlin/kotlinx-datetime (org.jetbrains.kotlinx:kotlinx-datetime)

v0.7.1

Compare Source

• Add kotlinx.datetime.Instant and kotlinx.datetime.Clock type aliases to, respectively, kotlin.time.Instant and kotlin.time.Clock to make migration more convenient.
• Add a fallback timezone database implementation for Darwin that uses the Foundation framework if the timezone database is unavailable on the filesystem (#​485).
• Restore binary compatibility in string format definitions utilizing dates on the JVM (#​545).

v0.7.0-0.6.x-compat

Compare Source

v0.7.0

Compare Source

Breaking changes:

• Remove kotlinx.datetime.Instant and kotlinx.datetime.Clock in favor of kotlin.time.Instant (#​506). See https://github.com/Kotlin/kotlinx-datetime?tab=readme-ov-file#deprecation-of-instant for a description of what to do if this causes problems.
• Unify the range of admissible LocalDate and LocalDateTime values on all platforms (#​432).
• Rename dayOfMonth to day, monthNumber to month (#​84).
• Make DayOfWeek and Month no longer type aliases to java.time.DayOfWeek and java.time.Month (#​96).
• Make "UTC" and not "Z" be the timezone identifier for TimeZone.UTC (#​474).
• Accept "z" in TimeZone.of, with the same meaning as "Z" (#​529).
• Add DateTimeFormat-based KSerializer implementations for datetime entities, and change the default serializers to be based on toString/parse pairs (#​415).

Additions:

• Add java.io.Serializable implementations for most of the entities in the library (#​143). Thanks for spotting and fixing a potential vulnerability, @​lukellmann!
• Add LocalDateRange, a range of LocalDate values (#​190). Thanks, @​PeterAttardo!
• Add YearMonth and YearMonthRange (#​457).

Tweaks and fixes:

• Support obtaining the system timezone on old Debian-based distributions (#​430).
• Fix not being able to parse some valid timezone identifiers using the timeZoneId() directive (#​444).
• Use the grammar defined in RFC 9557 for parsing timezone identifiers in the timeZoneId() directive, allowing parsing values not present in the timezone database (#​531).
• Improved error messages when formatting an invalid DateTimeComponents value (#​471).
• Set the JPMS dependency on kotlinx.serialization.core to be optional (#​496).

Kotlin/kotlinx.coroutines (org.jetbrains.kotlinx:kotlinx-coroutines-test)

v1.10.2

Compare Source

• Fixed the kotlinx-coroutines-debug JAR file including the module-info.class file twice, resulting in failures in various tooling (#​4314). Thanks, @​RyuNen344!
• Fixed Flow.stateIn hanging when the scope is cancelled in advance or the flow is empty (#​4322). Thanks, @​francescotescari!
• Improved handling of dispatcher failures in .limitedParallelism (#​4330) and during flow collection (#​4272).
• Fixed runBlocking failing to run its coroutine to completion in some cases if its JVM thread got interrupted (#​4399).
• Small tweaks, fixes, and documentation improvements.

JetBrains/kotlin (org.jetbrains.kotlin.plugin.serialization)

v2.2.21: Kotlin 2.2.21

Changelog

Backend. Wasm

• KT-81372 K/Wasm: JsException: Exception was thrown while running JavaScript code on Safari 18.2/18.3
• KT-80018 K/Wasm: exceptions don't work properly in JavaScriptCore (vm inside Safari, WebKit)

Compiler

• KT-81191 K2: "null cannot be cast to non-null type ConeTypeParameterLookupTag" with invalid code
• KT-80936 NON_PUBLIC_CALL_FROM_PUBLIC_INLINE : @PublishedApi doesn't work for fun interfaces

JavaScript

• KT-79926 Wrong export of interfaces with companions with ES Modules
• KT-81424 Kotlin/JS: Cannot Get / in a simple running application
• KT-80873 KJS: Stdlib requires ES2020-compatible JS engine due to BigInt type literal

Native

• KT-79384 K/N: Application Not Responding: Thread Deadlock

Tools. Gradle

• KT-79047 Gradle compileKotlin fails with configuration cache
• KT-81148 Publishing helpers in KGP are incompatible with Isolated Projects
• KT-80950 KGP breaks configuration cache when signing plugin with GnuPG is applied

Tools. Gradle. Multiplatform

• KT-61127 Remove scoped resolvable and intransitive DependenciesMetadata configurations used in the pre-IdeMultiplatformImport IDE import
• KT-81249 Kotlin 2.2.20 broke KMP implementation of Parcelize

Tools. Gradle. Native

• KT-81510 commonizeCInterop exception with 'kotlinNativeBundleConfiguration' not found
• KT-81134 Native: Gradle configuration failure likely related to Klibs cross-compilation
• KT-77732 commonizeCInterop failed with "Unresolved classifier: platform/posix/size_t"
• KT-80675 Commonized cinterops between "test" compilations produce an import failure

Tools. Maven

• KT-81218 Kotlin Maven Plugin 2.2.20: Java classes not resolved with enabled incremental compilation without daemon

Tools. Wasm

• KT-80582 Multiple reloads when using webpack dev server after 2.2.20-Beta2

v2.2.20

Analysis API

• KT-78187 Synthetic properties not to be shown as callables
• KT-72525 K2. red code and KIWA on new-lines in guarded when conditions (with parentheses)
• KT-74246 KaVisibilityChecker.isVisible is inefficient with multiple calls on the same use-site

Analysis API. Code Compilation

• KT-78382 K2 IR lowering error when interface extends interface
• KT-73201 K2 IDE: Error while evaluating expressions with local classes
• KT-78164 Evaluator: '@JvmName' annotations are not recognized in other modules
• KT-76457 K2 IDE / KMP Debugger: KISEWA “Cannot compile a common source without a JVM counterpart” on evaluating inline fun from common module inside jvm
• KT-73084 K2 evaluator cannot resolve local variables standing at the closing brace

Analysis API. FIR

Performance Improvements

• KT-76490 Do not load ast during the contracts phase if no contracts present
• KT-78132 Do not check FirElementBuilder#tryGetFirWithoutBodyResolve optimization for already resolved declarations

Fixes

• KT-72227 SOE from recursive value class
• KT-68977 K2 IDE: Reference to companion object through typealias in a function call does not work
• KT-72357 Implement partial body resolution
• KT-76932 Support context parameters on dangling modifier list
• KT-72407 FirImplementationByDelegationWithDifferentGenericSignatureChecker: FirLazyExpression should be calculated before accessing
• KT-77602 K2 / Analysis API: KAEWA “No fir element was found for KtParameter” on incorrect context()-call
• KT-77629 K2: NPE: "org.jetbrains.kotlin.fir.java.declarations.FirJavaTypeParameter.performFirstRoundOfBoundsResolution"
• KT-76855 Analysis API: KaType.asPsiType returns null for a local inner class in dependent analysis tests
• KT-72718 ImplicitReceiverValue.createSnapshot creates invalid FIR if receiver is smart-casted
• KT-76811 Analysis API: resolveToFirSymbol finds a FirPropertySymbol for a KtScript in dependent analysis
• KT-73586 [Analysis API] Add lazyResolveToPhase(STATUS) before accessing modifiers of members
• KT-71135 AA: exception from sealed inheritors checker when analyzeCopy
• KT-75534 K2 AA: "Containing declaration should present for nested declaration class KtNamedFunction" with dangling annotation on top-level anonymous function
• KT-75687 K2: local variable doesn't get to the do-while scope
• KT-56543 LL FIR: rework lazy transformers so transformers modify only declarations they suppose to

Analysis API. Infrastructure

• KT-76809 Analysis API: Dependent analysis tests frequently work with the original element instead of the copied element

Analysis API. Light Classes

• KT-78835 Find usages of a light constructor from a class with an empty body finds usages of class as well
• KT-78878 K2. Method shown as unavailable in Java when @JvmExposeBoxed is applied (redundantly) at both class and method level in Kotlin
• KT-78065 Support "Expose boxed inline value classes" in Light Classes
• KT-78076 DLC: KotlinDeclarationInCompiledFileSearcher missed accessors if types are boxed
• KT-77569 SLC: annotation missing from generated no-args constructor
• KT-75182 K2 AA. False positive red code "Unresolved reference" to a Kotlin method in Java when Kotlin uses a value class with @JvmOverloads
• KT-77564 Constructor with JvmOverloads and value class shouldn't mark regular constructors private
• KT-77505 K2: find usages on java accessor methods do not detect kotlin property accessor usages
• KT-76789 Annotation resolve shouldn't search through non-class members
• KT-76907 Wrong equality between repeatable annotation and container

Analysis API. Providers and Caches

• KT-77578 Analysis API: Performance degradation of KaBaseResolutionScope.contains after introduction of library restriction scopes
• KT-78640 Analysis API: Remove "friend builtins provider" from FirDeclarationForCompiledElementSearcher
• KT-74907 Analysis API: Apply platform-based library module content restrictions consistently
• KT-77605 AA: Leaking KaDanglingFileModule through IdeKotlinPackageProvider
• KT-62474 Analysis API: Improve mergeability and performance of custom search scopes
• KT-77022 Get rid of ExpectBuiltinPostProcessor workaround
• KT-77248 Delegation of JavaModuleResolver is restricted to CliJavaModuleResolver
• KT-76850 LLFirLibrarySession cannot be cast to LLFirResolvableModuleSession
• KT-76952 Analysis API: when exhaustiveness analysis fails for sealed classes in dangling files
• KT-72390 Kotlin project full of red code

Analysis API. Standalone

• KT-78638 Analysis API Standalone: Stdlib builtins are not indexed in STUBS deserialized declaration origin mode

Analysis API. Stubs and Decompilation

• KT-77496 Support HAS_MUST_USE_RETURN_VALUE metadata flags in FirStubBasedMemberDeserializer
• KT-77778 Function receivers doesn't have annotations
• KT-77777 Receiver annotations shouldn't be present on types
• KT-77538 Support default property accessors with annotations
• KT-77763 Decompiled stubs miss inline modifier for property accessors
• KT-77309 Decompiled property from annotation constructor with default value should have a constant initializer
• KT-77168 Prefer DataInputOutputUtil for serialization/deserialization
• KT-77117 Flaky WRONG_ANNOTATION_TARGET diagnostic
• KT-76791 Function signature types are deserialized inconsistently
• KT-76947 Support functional types with context parameters

Analysis API. Surface

New Features

• KT-73473 Provide KaExpressionInformationProvider.isUsedAsResultOfLambda
• KT-77278 Implement psi-based KaFirKotlinPropertyKtPropertyBasedSymbol#hasBackingField
• KT-70770 KaLocalVariableSymbol: support isLateInit

Performance Improvements

• KT-78526 Get rid of redundant checkValidity from withPsiValidityAssertion

Fixes

• KT-77674 Analysis API: Redundant smart cast to the original type
• KT-76577 Guard KaFirStopWorldCacheCleaner from deadlocks via threads waiting
• KT-78820 K2: ISE "FIR element class FirErrorExpressionImpl is not supported in constant evaluation" through RedundantValueArgumentInspection
• KT-75057 Analysis API: Reference to object through typealias in invoke operator call leads to original type
• KT-79042 Do not restore KaTypePointer if target kind has changed
• KT-72421 AA: "KtReference.resolveToSymbols" returns empty list when ASSIGN_OPERATOR_AMBGUITY error is present
• KT-63464 AA: KtPsiTypeProvider#asPsiType doesn't substitute kotlin.Unit
• KT-75913 K2: SymbolLightLazyAnnotation evaluates arguments and replaces them with constants
• KT-78628 K2. Setting Receiver=true in Change Signature produces parameter of regular function type receiver instead of extension function type
• KT-78278 ISE: FIR element "class org.jetbrains.kotlin.fir.expressions.impl.FirErrorResolvedQualifierImpl" is not supported in constant evaluation at org.jetbrains.uast.kotlin.internal.FirKotlinUastConstantEvaluator.evaluate
• KT-73184 Analysis API: KaFunctionCall.argumentMapping is unexpectedly deparenthesised
• KT-73327 Cover all psi inputs with scope validity assertions
• KT-78613 PSI: add binary compatibility checks
• KT-74013 Analysis API: Cover the API surface with @SubclassOptInRequired annotations
• KT-76614 Move the parser and lexer to a separate module
• KT-78552 KaFunctionValueParameter is not marked as KaLifetimeOwner
• KT-71152 Add back SubclassOptInRequired to classes in KaModule.kt
• KT-71876 Support storing parameter names in KaFunctionType
• KT-77738 AA: inconsistent KaType.allSupertypes regarding multiple iterations
• KT-75358 K2 AA, KaFirVisibilityChecker: private member of anonymous object is not visible inside it
• KT-73723 K2 AA, KaFirVisibilityChecker: protected member of superclass is not visible from anonymous object
• KT-78057 [Analysis API, K2] Context parameters are not resolved in KDoc
• KT-73758 K2 Mode: "KaEvaluator.evaluate" does not work for simple arithmetic expressions
• KT-72301 K2 AA. PSI should present for declaration built by Kotlin code on property access syntax of generic Java getter through Kotlin subclass
• KT-77730 K2: Unable to get a light PSI for a nested annotation used with fully-qualified name
• KT-73216 K2: unresolvable references in type parameters
• KT-71794 Analysis API: Types with errors have unresolved qualifiers in lambda parameters position
• KT-65846 Support parameter names in functional type rendering
• KT-76738 K2 AA: rendering constructor of sealed class inserts protected modifier
• KT-77515 KaTypeProvider#receiverType should be more tolerant to an error code
• KT-77333 K2 AA: KaFirTypeProvider.getType: InvalidFirElementTypeException: For TYPE_REFERENCE with text I, unexpected element of type: FirSuperReceiverExpressionImpl found
• KT-76044 K2 AA: isFun is true for restored symbol of Java interface with several methods
• KT-77264 KaTypeProvider#type should be more tolerant to an error code
• KT-77282 KaPropertySymbol: support isDelegatedProperty for libraries
• KT-77254 K2 AA: expectedType doesn't provide anything for parameter default value
• KT-74777 KaVariableSymbol.hasBackingField returns incorrect result for libraries
• KT-77280 Rename KaPropertyAccessorSymbol#isCustom to isNotDefault
• KT-77210 Analysis API: scopeContext shows implicit receiver with a class instance in the class constructor
• KT-77196 Clarify differences between KaPropertyAccessorSymbol#{isDefault, hasBody}
• KT-76580 K2: No expected type for the second+ vararg argument
• KT-76750 K2. internal exception 'Unable to provide inlay hint' on typo in nested lambdas
• KT-73290 Analysis API: Improve the architecture of content scopes and resolution scopes
• KT-73055 Get rid of the deprecated Analysis API API
• KT-70199 K2: ConcurrentModificationException at FirCallCompleter$LambdaAnalyzerImpl.analyzeAndGetLambdaReturnArguments

Backend. Wasm

New Features

• KT-65721 K/Wasm: stop unconditionally exporting any main function from the root package

Performance Improvements

• KT-70097 Optimize shared primitive variables in Native and Wasm

Fixes

• KT-80106 devServer in Kotlin/Wasm overwrites defaults, causing missing static paths
• KT-80018 K/Wasm: exceptions don't work properly in JavaScriptCore (vm inside Safari, WebKit)
• KT-66072 K/Wasm: improve how exceptions work in JS interop
• KT-77897 WasmJs: ClassCastException when using star-projection with nullable transformation in generic extension function
• KT-71533 K/Wasm + K2: no error on KClass::qualifiedName usages
• KT-73931 WASM: "RuntimeError: illegal cast" with nullable generic
• KT-65403 [WASM] RuntimeError is thrown instead of ClassCastException
• KT-79317 [Wasm] Do not throw CCE for ExcludedFromCodegen declarations
• KT-66085 K/WASM: Runtime error is uncaught with catch (e: Throwable)
• KT-78036 K/Wasm: generate a message with "expected" and "actual" types in case of CCE
• KT-78384 K/Wasm: Incorrect debug info of local declarations in inline function from another file
• KT-72220 Wasm: Unclear exception in case of missed dependency
• KT-71691 No trace on Wasm/JS if an error occurred in initializing global variables in a file with the main function
• KT-67554 [Wasm] Consider to have reference equals or/and equals for function references
• KT-71521 K/Wasm: incorrect results on equality checks for capturing property references
• KT-71522 K/Wasm: incorrect results on equality checks for function references
• KT-69570 K/Wasm: JsExport with default parameter value compiles to invalid Wasm
• KT-71517 K/Wasm: KClass::qualifiedName for local classes and objects returns non-null value
• KT-68309 WASM: Anonymous class simpleName returns "" instead of null
• KT-77272 K/Wasm: Remove kotlin.wasm.internal.ClosureBox* classes from the standard library
• KT-66106 Wasm: lambda was not invoked in test lambda2.kt
• KT-77855 [Wasm] Improve virtual function calls speed for lambdas
• KT-77501 Wasm: unsigned vararg compiles to invalid Wasm
• KT-76775 [Wasm] Inconsistent FP mod operation
• KT-77464 Wasm: KType.toString() has simple names even with -Xwasm-kclass-fqn
• KT-77465 Wasm: KTypeParamter printed without variance information

Compiler

New Features

• KT-71768 Enable -Xjvm-default=all-compatibility by default to generate JVM default interface methods
• KT-78374 Make indy lambda function name generation more consistent
• KT-45683 Allow generics in contract type assertions
• KT-27090 Support contracts in getter and setter for top-level extension properties
• KT-76766 Warning is missing for wrong subclass checking
• KT-71244 Incorporate existing @CheckReturnValue annotation(s) into Kotlin's unused return value checker
• KT-73256 Implement all meta-target for annotations
• KT-78792 Report warning for redundant return in expression body
• KT-32313 Support contracts for operator functions
• KT-70722 Implement better Kotlin warnings for value classes and JEP 390 (Warnings for Value-Based Classes)
• KT-65688 Generate when-expressions over final classes via invokedynamic typeSwitch + tableswitch on JDK 21+
• KT-54344 Trigger the unused expression warning for interpolated strings, even when the expression may have side effects
• KT-74807 Implement 'full' unused return value checker mode
• KT-77653 K/N: an optimization pass to remove redundant type checks
• KT-64477 Enhance KotlinLightParser to make it able to parse scripts
• KT-74809 Support unnamed local variables
• KT-72941 ANNOTATIONS_ON_BLOCK_LEVEL_EXPRESSION_ON_THE_SAME_LINE missing in K2
• KT-75061 Support context-sensitive resolution in type position

Performance Improvements

• KT-77993 Optimize old PSI/LightTree Kotlin parser
• KT-78672 Consider having FirCallableSymbol.callableId null for local properties / parameters
• KT-77839 K2: consider not creating CallableId for value parameters / variables / fields
• KT-74981 Kotlin/Native: large binary size for iOS target in 2.1.0(LLVM16)
• KT-77838 K2: consider replacing LinkedHashMap with HashMap inside scopes and scope session
• KT-76698 Android Studio compose preview holds read lock 700ms for KaCompilerFacility API
• KT-68677 Kotlin compilation issue when using EnumMap and Pair

Fixes

• KT-79979 K2: ClassCastException when overriding extension property with delegation
• KT-67146 UPPER_BOUND_VIOLATED missing on implicit type arguments
• KT-76477 Kotlin/Native: fix compiler performance reporting in sources->klib and klibs->binary
• KT-79866 kotlinc 2.2.0 silently emits 'NonExistentClass' instead of reporting an error
• KT-78666 "Platform declaration clash" caused by indy lambda name generation which generates conflicting names
• KT-80285 IJ monorepo: broken compilation after 2.2.20-RC update
• KT-79442 "Multiple annotations of type kotlin.coroutines.jvm.internal.DebugMetadata": 2.2.0-Beta1 generates broken code with JVM default suspend methods in interfaces
• KT-78589 "Class does not have member field" caused by delegation from a Java to Kotlin class
• KT-79816 Java Interfaces implemented by delegation have non-null return checks
• KT-78097 False positive NO_ELSE_IN_WHEN on sealed interface with negative is check
• KT-77182 A function in a file annotated with @file:MustUseReturnValue doesn't produce a warning when it is used from compiled code
• KT-79085 Adding -Xreturn-value-checker=full to kotlinc causes "error: conflicting overloads"
• KT-75268 K2: Implement the new compilation scheme for MPP (compiler part)
• KT-78843 FIR tree: comments within String concatenation aren't visited in 2.2.0
• KT-77401 [FIR] ParameterNameTypeAttribute.name doesn't support @ParameterName with compile-time constant property argument
• KT-73611 Remove -Xextended-compiler-checks in favor of a deprecation cycle
• KT-79276 Dexing fails with "Cannot read field X because is null" with 2.2.0
• KT-79781 Missing MISSING_DEPENDENCY_CLASS when using type alias with inaccessible RHS
• KT-78621 false-positive type mismatch error on value of nullable type as value of platform type
• KT-79547 "UnsupportedOperationException: Not supported" with inlining and value classes
• KT-52706 Bad signature for generic value classes with substituted type parameter
• KT-79519 Nested type alias is unreachable from another module
• KT-76839 False-negative MISSING_DEPENDENCY_CLASS on parameter of data class constructor
• KT-78352 False-positive IDENTITY_SENSITIVE_OPERATIONS_WITH_VALUE_TYPE when comparing with equality operator (==)
• KT-78815 Symbol not found: __ZNSt3__117bad_function_callD1Ev error on iOS 15.5 simulator in Xcode 16.3 after update to 2.2.0-Beta2
• KT-25341 NOT_YET_SUPPORTED_IN_INLINE reported over anonymous object border
• KT-77099 'all' annotation target is not a soft keyword
• KT-76478 FIR: Implement IDE-only checker for types exposed in inline function
• KT-79355 Failed to fix the problem of desugared inc with new reverse implies returns contract
• KT-79277 Implies returns contract doesn't affect the return type of the function if it is in the argument position
• KT-79271 Implies returns contract doesn't impact exhaustiveness
• KT-79218 SMARTCAST_IMPOSSIBLE for top‑level extension‑property getter despite returnsNotNull contract
• KT-79220 returnsNotNull contract ignored on extension function with nullable receiver
• KT-79354 IllegalStateException: Debug metadata version mismatch. Expected: 1, got 2 with compiler 2.2.20-Beta1 and stdlib 2.2.0
• KT-78479 IR lowering failed / Unexpected null argument for composable call
• KT-77986 K2: False negative: "Local classes are not yet supported in inline functions"
• KT-79076 'IllegalStateException: Cannot serialize error type: ERROR CLASS: Uninferred type' with Exposed column using recursive generic type
• KT-78726 Split runPsiToIr phase into runPsiToIr and runIrLinker
• KT-77672 K/N: come up with a fallback strategy for the casts optimization pass
• KT-76365 K2: Missing ABSTRACT_SUPER_CALL
• KT-76585 K2: RETURN_IN_FUNCTION_WITH_EXPRESSION_BODY is not reported inside initializers of local variables
• KT-79099 K2: Do not inherit inline modifier
• KT-76902 Omit type-use annotations from diagnostics
• KT-64499 Report error on overloading by order of context parameters
• KT-58988 K2: Deprecate exposing package-private parameter of internal method
• KT-77199 OPT_IN_USAGE_ERROR is still absent when calling the enum primary constructor
• KT-72800 K2: java.util.NoSuchElementException when introduce variable
• KT-79056 Add experimental language version 2.5
• KT-17460 Diagnostics and intention on suspend function that is overriden with non-suspend one.
• KT-78351 Plugins: VIRTUAL_MEMBER_HIDDEN caused by FirSupertypeGenerationExtension
• KT-78527 No LESS_VISIBLE_TYPE_ACCESS_IN_INLINE_WARNING is reported when a private companion object is accessed via the class name
• KT-79045 FirExpectActualMatcherTransformer should not visit bodies
• KT-74570 K2: Linenumber for annotation o

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