Update kotlin - abandoned

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlinx:kotlinx-coroutines-test	1.7.3 -> 1.9.0
org.jetbrains.kotlinx:kotlinx-serialization-json	1.6.0 -> 1.7.3
composeOptions (source)	1.5.3 -> 1.5.15
org.jetbrains.kotlin.android (source)	1.9.10 -> 2.1.0
org.jetbrains.kotlin.plugin.serialization (source)	1.9.10 -> 2.1.0

---

Release Notes

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

v1.9.0

Compare Source

Features

• Wasm/WASI target support (#​4064). Thanks, @​igoriakovlev!
• limitedParallelism now optionally accepts the name of the dispatcher view for easier debugging (#​4023).
• No longer initialize Dispatchers.IO on the JVM when other standard dispatchers are accessed (#​4166). Thanks, @​metalhead8816!
• Introduced the Flow<T>.chunked(size: Int): Flow<List<T>> operator that groups emitted values into groups of the given size (#​1290).
• Closeable dispatchers are instances of AutoCloseable now (#​4123).

Fixes

• Calling hasNext on a Channel's iterator is idempotent (#​4065). Thanks, @​gitpaxultek!
• CoroutineScope() created without an explicit dispatcher uses Dispatchers.Default on Native (#​4074). Thanks, @​whyoleg!
• Fixed a bug that prevented non-Android Dispatchers.Main from initializing when the Firebase dependency is used (#​3914).
• Ensured a more intuitive ordering of tasks in runBlocking (#​4134).
• Forbid casting a Mutex to Semaphore (#​4176).
• Worked around a stack overflow that may occur when calling asDeferred on a Future many times (#​4156).

Deprecations and promotions

• Advanced the deprecation levels for BroadcastChannel-based API (#​4197).
• Advanced the deprecation levels for the old kotlinx-coroutines-test API (#​4198).
• Deprecated Job.cancelFutureOnCompletion (#​4173).
• Promoted CoroutineDispatcher.limitedParallelism to stable (#​3864).
• Promoted CoroutineStart.ATOMIC from ExperimentalCoroutinesApi to DelicateCoroutinesApi (#​4169).
• Promoted CancellableContinuation.resume with an onCancellation lambda to stable, providing extra arguments to the lambda (#​4088).
• Marked the classes and interfaces that are not supposed to be inherited from with the new InternalForInheritanceCoroutinesApi opt-in (#​3770).
• Marked the classes and interfaces inheriting from which is not stable with the new ExperimentalForInheritanceCoroutinesApi opt-in (#​3770).

Other

• Kotlin was updated to 2.0 (#​4137).
• Reworked the documentation for CoroutineStart and Channel-based API (#​4147, #​4148, #​4167). Thanks, @​globsterg!
• Simplified the internal implementation of Job (#​4053).
• Small tweaks, fixes, and documentation improvements.

v1.8.1

Compare Source

• Remove the @ExperimentalTime annotation from usages of TimeSource (#​4046). Thanks, @​hfhbd!
• Introduce a workaround for an Android bug that caused an occasional NullPointerException when setting the StateFlow value on old Android devices (#​3820).
• No longer use kotlin.random.Random as part of Dispatchers.Default and Dispatchers.IO initialization (#​4051).
• Flow.timeout throws the exception with which the channel was closed (#​4071).
• Small tweaks and documentation fixes.

Changelog relative to version 1.8.1-Beta

• Flow.timeout throws the exception with which the channel was closed (#​4071).
• Small documentation fixes.

v1.8.0

Compare Source

• Implement the library for the Web Assembly (Wasm) for JavaScript (#​3713). Thanks @​igoriakovlev!
• Major Kotlin version update: was 1.8.20, became 1.9.21.
• On Android, ensure that Dispatchers.Main != Dispatchers.Main.immediate (#​3545, #​3963).
• Fixed a bug that caused Flow operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream (#​4035, #​4038)
• kotlinx-coroutines-debug is published with the correct Java 9 module info (#​3944).
• kotlinx-coroutines-debug no longer requires manually setting DebugProbes.enableCoroutineCreationStackTraces to false, it's the default (#​3783).
• kotlinx-coroutines-test: set the default timeout of runTest to 60 seconds, added the ability to configure it on the JVM with the kotlinx.coroutines.test.default_timeout=10s (#​3800).
• kotlinx-coroutines-test: fixed a bug that could lead to not all uncaught exceptions being reported after some tests failed (#​3800).
• delay(Duration) rounds nanoseconds up to whole milliseconds and not down (#​3920). Thanks @​kevincianfarini!
• Dispatchers.Default and the default thread for background work are guaranteed to use the same context classloader as the object containing it them (#​3832).
• It is guaranteed that by the time SharedFlow.collect suspends for the first time, it's registered as a subscriber for that SharedFlow (#​3885). Before, it was also true, but not documented.
• Atomicfu version is updated to 0.23.1, and Kotlin/Native atomic transformations are enabled, reducing the footprint of coroutine-heavy code (#​3954).
• Added a workaround for miscompilation of withLock on JS (#​3881). Thanks @​CLOVIS-AI!
• Small tweaks and documentation fixes.

Changelog relative to version 1.8.0-RC2

• kotlinx-coroutines-debug no longer requires manually setting DebugProbes.enableCoroutineCreationStackTraces to false, it's the default (#​3783).
• Fixed a bug that caused Flow operators that limit cancel the upstream flow to forget that they were already finished if there is another such operator upstream (#​4035, #​4038)
• Small documentation fixes.

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

v1.7.3

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

This release aims to fix important issues that were discovered in the 1.7.2 release,
including the inability to sync certain projects into Android Studio/IntelliJ IDEA and exceptions from custom Uuid serializers.

It uses Kotlin 2.0.20 by default.

• Use explicit kotlin-stdlib and kotlin-test versions from version catalog (#​2818)
• Drop usage of deprecated Any?.freeze() in K/N target (#​2819)
• Check against serialName instead of simpleClassName (#​2802)
• Ignore NoClassDefFoundError when initializing builtins map for serializer() function (#​2803)
• Clarify example for SerializationException (#​2806)

v1.7.2

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

This release provides several new features, including a major Cbor configuration rework.
It uses Kotlin 2.0.20 by default.

Cbor feature set for COSE compliance

This change brings a lot of features to the CBOR format, namely:

• Serial Labels — see @CborLabel annotation and preferCborLabelsOverNames flag.
• Tagging of keys and values — see encode*Tags and verify*Tags set of flags
• Definite length encoding — see useDefiniteLengthEncoding. This flag affects object encoding, since decoding of arrays with definite lenghts is automatically supported.
• Option to globally prefer major type 2 for byte array encoding — see alwaysUseByteString flag.

Since there are quite a lot of flags now, they were restructured to a separate CborConfiguration class, similarly to JsonConfiguration.
It is possible to retrieve this configuration from CborEncoder/CborDecoder interfaces in your custom serializers (see their documentation for details).

All of these features make it possible to serialize and parse COSE-compliant CBOR, for example, ISO/IEC 18013-5:2021-compliant mobile driving license data.
In case you want to make use of them, there is a predefined Cbor.CoseCompliant instance.
However, some canonicalization steps (such as sorting keys) still need to be performed manually.

This functionality was contributed to us by Bernd Prünster.

Keeping generated serializers

One of the most requested features for serialization plugin was to continue to generate a serializer even if a custom one is specified for the class.
It allows using a plugin-generated serializer in a fallback or delegate strategy, accessing type structure via descriptor, using default serialization behavior in inheritors that do not use custom serializers.

Starting with this release, you can specify the @KeepGeneratedSerializer annotation on the class declaration to instruct the plugin to continue generating the serializer.
In this case, the serializer will be accessible using the .generatedSerializer() function on the class's companion object.

This annotation is currently experimental. Kotlin 2.0.20 or higher is required for this feature to work.

You can check out the examples in the documentation and in the PRs: #​2758, #​2669.

Serializer for kotlin.uuid.Uuid

Kotlin 2.0.20 added a common class to represent UUIDs in a multiplatform code.
kotlinx.serialization 1.7.2 provides a corresponding Uuid.serializer() for it, making it possible to use it in @Serializable classes.
Note that for now, serializer should be provided manually with @Contextual annotation.
Plugin will be able to automatically insert Uuid serializer in Kotlin 2.1.0.

See more details in the corresponding PR.

Other bugfixes and improvements

• Prohibited using of zero and negative field numbers in ProtoNumber (#​2766)
• Improve readability of protobuf decoding exception messages (#​2768) (thanks to xiaozhikang0916)
• docs(serializers): Fix grammatical errors (#​2779) (thanks to jamhour1g)
• Fixed VerifyError after ProGuard optimization (#​2728)
• Add wasm-wasi target to Okio integration (#​2727)

v1.7.1

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

This is a bugfix release that aims to fix missing kotlinx-serialization-hocon artifact.
It also contains experimental integration with kotlinx-io library.
Kotlin 2.0.0 is used by default.

Fixed HOCON publication

Sadly, 1.7.0 release was published incomplete: kotlinx-serialization-hocon artifact is missing from 1.7.0 and 1.7.0-RC releases.
This release fixes this problem and now kotlinx-serialization-hocon is available again with 1.7.1 version.
No other changes were made to this artifact. Related ticket: #​2717.

Add integration with a kotlinx-io library

kotlinx-io is an official multiplatform library that provides basic IO primitives, similar to Okio.
kotlinx.serialization integration is now available in a separate artifact, located at the kotlinx-serialization-json-io coordinates.
Integration artifact provides functions similar to existing Okio integration: encodeToSink, decodeFromSource, and decodeSourceToSequence.
Check out the PR for more details.

Other bugfixes

• Prohibited use of elements other than JsonObject in JsonTransformingSerializer with polymorphic serialization (#​2715)

v1.7.0

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

This release contains all of the changes from 1.7.0-RC and is compatible with Kotlin 2.0.
Please note that for reasons explained in the 1.7.0-RC changelog, it may not be possible to use it with the Kotlin 1.9.x
compiler plugin. Yet, it is still fully backwards compatible with previous versions.

The only difference with 1.7.0-RC is that classDiscriminatorMode property in JsonBuilder is marked as experimental,
as it should have been when it was introduced (#​2680).

v1.6.3

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

This release provides a couple of new features and uses Kotlin 1.9.22 as default.

Class discriminator output mode

Class discriminator provides information for serializing and deserializing polymorphic class hierarchies.
In case you want to encode more or less information for various third party APIs about types in the output, it is possible to control
addition of the class discriminator with the JsonBuilder.classDiscriminatorMode property.
For example, ClassDiscriminatorMode.NONE does not add class discriminator at all, in case the receiving party is not interested in Kotlin types.
You can learn more about this feature in the documentation and corresponding PR.

Other features

• Add kebab-case naming strategy (#​2531) (thanks to Emil Kantis)
• Add value class support to the ProtoBufSchemaGenerator (#​2542) (thanks to Felipe Rotilho)

Bugfixes and improvements

• Fix: Hocon polymorphic serialization in containers (#​2151) (thanks to LichtHund)
• Actualize lenient mode documentation (#​2568)
• Slightly improve error messages thrown from serializer() function (#​2533)
• Do not try to coerce input values for properties (#​2530)
• Make empty objects and arrays collapsed in pretty print mode (#​2506)
• Update Gradle dokka configuration to make sure "source" button is visible in all API docs (#​2518, #​2524)

v1.6.2

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

This is a patch release accompanying Kotlin 1.9.21. It also provides additional targets that were not available in 1.6.1:
wasm-wasi and (deprecated) linuxArm32Hfp.

• Add Wasm WASI target (#​2510)
• Bring back linuxArm32Hfp target because it is deprecated, but not removed yet. (#​2505)

v1.6.1

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

This release uses Kotlin 1.9.20 by default, while upcoming 1.9.21 is also supported.

Trailing commas in Json

Trailing commas are one of the most popular non-spec Json variations.
A new configuration flag, allowTrailingComma, makes Json parser accept them instead of throwing an exception.
Note that it does not affect encoding, so kotlinx.serialization always produces Json without trailing commas.
See details in the corresponding PR

Support of WasmJs target

Kotlin/Wasm has been experimental for some time and gained enough maturity to be added to the kotlinx libraries.
Starting with 1.6.1, kotlinx.serialization provides a wasm-js flavor, so your projects with Kotlin/Wasm can have even more
functionality.
As usual, just add serialization dependencies to your build
and declare wasmJs target.
Please remember that Kotlin/Wasm is still experimental, so changes are expected.

Bugfixes and improvements

• Fix TaggedDecoder nullable decoding (#​2456) (thanks to Phillip Schichtel)
• Fix IllegalAccessException for some JPMS boundaries (#​2469)
• Cbor: check if inline value classes are marked as @​ByteString (#​2466) (thanks to eater)
• Improve polymorphic deserialization optimization (#​2481)
• Update Okio dependency to 3.6.0 (#​2473)
• Add protobuf conformance tests (#​2404) (thanks to Doğaç Eldenk)
• Support decoding maps with boolean keys (#​2440)

JetBrains/kotlin (org.jetbrains.kotlin.android)

v2.1.0: Kotlin 2.1.0

Changelog

Analysis API

New Features

• KT-68603 KotlinDirectInheritorsProvider: add an option to ignore non-kotlin results

Performance Improvements

• KT-70757 Performance problem in KaFirVisibilityChecker for KaFirPsiJavaClassSymbol

Fixes

• KT-70437 Class reference is not resolvable
• KT-57733 Analysis API: Use optimized ModuleWithDependenciesScopes in combined symbol providers
• KT-72389 K2: False positive "Redundant 'protected' modifier" for protected property inside protected constructor from private or internal class
• KT-69190 K2: False-positive "redundant private modifier"
• KT-64984 Analysis API: Support Wasm target
• KT-70375 K2: NPE at org.jetbrains.kotlin.analysis.api.fir.symbols.KaFirNamedClassSymbolBase.createPointer
• KT-71259 K2 evaluator: Invalid smart cast info collecting for Code Fragments
• KT-69360 Lack of implicit receiver for the last statement under lambda in scripts
• KT-70890 Analysis API: Experiment with weak references to LL FIR/analysis sessions in session caches
• KT-70657 Analysis API: Inner types from classes with generics are incorrectly represented by the compiled jars
• KT-71055 Suspend calls inside 'analyze()' break the block guarantees
• KT-70815 Analysis API: Implement stop-the-world session invalidation
• KT-69819 K2 IDE: LHS type in callable references is unresolved when it has type arguments and is qualified
• KT-68761 Analysis API: Experiment with limited-size cache in KaFirSessionProvider
• KT-70384 Analysis API Standalone: The same class in the same two renamed jars is unresolved
• KT-71067 Exceptions from references cancel Find Usages
• KT-69535 Redesign 'containingSymbol'
• KT-71025 K2 IDE: Scopes in "importingScopeContext" have reversed ordering and "indexInTower" values
• KT-67483 K2 IDE: Serializable plugin causes infinite resolve recursion when there is a star import from a class with annotation call
• KT-69416 K2 IDE / Completion: “No classifier found” on simple value creating
• KT-70257 CCE: class kotlin.UInt cannot be cast to class java.lang.Number
• KT-70376 K2 IDE / Kotlin Debugger: IAE “Only componentN functions should be cached this way, but got: toString” on evaluating toString() method for value class
• KT-70264 AA: service registration via XML fails with AbstractMethodError in Lint CLI
• KT-69950 Analysis API: Introduce isSubtypeOf(ClassId)
• KT-68625 K2: “lazyResolveToPhase(STATUS) cannot be called from a transformer with a phase STATUS.”
• KT-67665 K2: contract violation for value class with a constructor parameter with an implicit type
• KT-67009 Analysis API: Add abbreviated type tests for type aliases from source modules
• KT-69977 KaFirFunctionalType#getAbbreviation is always null
• KT-68341 Analysis API: Expanded function types from libraries don't have an abbreviated type
• KT-68857 Analysis API: Refactor annotations
• KT-70386 Do not filter out overloads from different libraries in dangling files
• KT-65552 K2: CANNOT_CHECK_FOR_ERASED in KtTypeCodeFragment
• KT-65803 K2: Analysis API: KtFirTypeProvider#getSubstitutedSuperTypes throws an exception in the case of "Wrong number of type arguments"
• KT-68896 Support VirtualFile binary dependency inputs to Analysis API modules
• KT-69395 K2 IDE: incorrect overload selection from binary dependencies in a shared native source set
• KT-68573 ISE: "Unexpected constant value (kotlin/annotation/AnnotationTarget, CLASS)" at Kt1DescUtilsKt.toKtConstantValue()
• KT-69576 Analysis API: FIR implementation of "isImplicitReferenceToCompanion" returns false for companion references in implicit invoke operator calls
• KT-69568 Analysis API: FIR implementation of "isImplicitReferenceToCompanion" returns true for non-companion references in qualified calls
• KT-69436 Analysis API Platform: Encapsulate LLFirDeclarationModificationService as an engine service
• KT-63004 K2: Analysis API: Design API for querying declarations generated by compiler plugins (similar to indices)
• KT-69452 AA FIR: wrong source PSI after compile-time evaluation
• KT-69598 AA: definitely not-null type at receiver position should be wrapped in parenthesis
• KT-60484 Analysis API: add support for KtType pointers similar to KtSymbolPointer
• KT-68884 Analysis API: Rename/deprecate/remove declarations as part of Stabilization
• KT-69453 AA FIR: miss to handle expected type of lambda with explicit label
• KT-69533 Protect implementation parts of Analysis API with opt-in annotations

Analysis API. FIR

Performance Improvements

• KT-71566 FirElementBuilder#getFirForNonKtFileElement should iterate a Psi file over and over
• KT-71224 Analysis API: FirElementFinder.collectDesignationPath relies on naive iteration through FIR files

Fixes

• KT-70327 Analysis API: Batch inspection causes deadlock in ValueWithPostCompute
• KT-69070 Analysis API: Querying declared member scope for Java symbols results in exception in some use cases
• KT-68268 LLSealedInheritorsProvider: reduce scope to kotlin files
• KT-69671 TYPES phase contract violation through JavaSymbolProvider
• KT-70624 Declaration symbols from code fragments are treated as not local
• KT-70662 NPE: FirLazyBodiesCalculatorKt.calculateLazyBodyForProperty
• KT-70859 Do not fail highlighting due to resolution problems
• KT-70474 FirLazyResolveContractViolationException from JavaSymbolProvider
• KT-70323 FirLazyResolveContractViolationException: lazyResolveToPhase(TYPES) cannot be called from a transformer with a phase TYPES
• KT-71567 LLFirCompilerRequiredAnnotationsTargetResolver should calculate annotation arguments on demand
• KT-71584 getNonLocalContainingOrThisDeclaration treats KtParameter from functional type as non-local

Analysis API. Light Classes

Performance Improvements

• KT-69998 Drop redundant cache from ClassInnerStuffCache

Fixes

• KT-69833 Support value classes
• KT-71693 Wrong name mangling for JvmField class property and companion property clash
• KT-71469 KtLightClassForDecompiledDeclaration: missed kotlinOrigin
• KT-70710 Provide light classes for KMP modules in Android Lint
• KT-70548 SLC: text of class object access expression is not the same as raw text
• KT-70572 SLC: missing isInheritor implementation for type parameter
• KT-70491 SLC: inconsistent source PSI of no-arg constructor for all default values
• KT-70458 SLC: missed auxiliaryOriginalElement for delegated property
• KT-70232 Support a companion object inside value classes
• KT-70349 @delegate:` annotations are missed for light class fields
• KT-68328 Move KtLightClassBase to ULC

Analysis API. Providers and Caches

• KT-65618 K2: resulted FirClass.psi != requested PsiClass from completion
• KT-69292 K2: Analysis API: A property's MUST_BE_INITIALIZED diagnostic is not updated after changing field usage in an accessor
• KT-71468 Drop redundant logic from LLFirJavaFacadeForBinaries
• KT-71700 Cache result of resolveToCall
• KT-71520 Analysis API: LLFirNativeForwardDeclarationsSymbolProvider spends a lot of time in indices

Analysis API. Standalone

• KT-65110 Analysis API: In Standalone mode the order of symbols is unstable

Analysis API. Stubs and Decompilation

• KT-71565 KtClassOrObject should use isLocal from greenStub

Analysis API. Surface

New Features

• KT-69960 resolveToCallCandidates should support operators
• KT-69961 resolveToCallCandidates should support properties

Performance Improvements

• KT-70529 KaSymbol: reduce the number of cached usages
• KT-70165 Introduce PSI-based KaSymbols for K2

Fixes

• KT-69371 Analysis API: expose only interfaces/abstract classes for the resolution API
• KT-69696 KaSymbolByFirBuilder should filter call-site substitutions
• KT-69679 KaDelegatedConstructorCall should have substituted signature
• KT-70206 anonymousSymbol API throws an exception for regular functions
• KT-69699 Receiver type is not substituted in the case of conflict declarations
• KT-69381 Analysis API: Investigate the viability of current KaSymbol caches
• KT-70199 K2: ConcurrentModificationException at FirCallCompleter$LambdaAnalyzerImpl.analyzeAndGetLambdaReturnArguments
• KT-70661 Invalid FirDeclarationOrigin ScriptTopLevelDestructuringDeclarationContainer
• KT-70663 KaFirDestructuringDeclarationSymbol: Failed requirement
• KT-63490 Analysis API: Accessing the Analysis API should be prohibited during dumb mode
• KT-63390 K2: Analysis API: add annotations to KtClassInitializerSymbol
• KT-55124 Design common ancestor for KtValueParameter and KtReceiverParameterSymbol
• KT-71731 directlyOverridenSymbols/allOverridenSymbols works incorrectly for intersection overrides

Apple Ecosystem

• KT-66262 Deprecate and remove support for bitcode embedding from the Kotlin Gradle plugin
• KT-66894 XCFramework task fails when name passed to xcframework DSL is different from framework's name
• KT-65675 XCFrameworkTask produces an xcframework with mismatched casing in embedded frameworks
• KT-69119 xcodeVersion task fails if Xcode isn't installed and apple-specific native targets aren't declared

Backend. Wasm

New Features

• KT-70786 Improve DX of the variable view during debugging in Chrome/Firefox for Kotlin/Wasm
• KT-70331 Support incremental compilation for the Wasm backend
• KT-71686 K/Wasm: Add functions to convert between Kotlin and JS array types
• KT-68185 [WasmJs] Attach js exception object to JsException

Fixes

• KT-71294 Wasm Artifacts/Resource are being loaded relatively instead of absolutely
• KT-71473 K/Wasm: Use --closed-world and related options for Binaryen
• KT-72297 [Wasm] Unused associated object class lead to compiler fail
• KT-72156 custom-formatters.js exists in JAR after publishToMavenLocal but not in the published artifact in Maven public
• KT-65799 K/Wasm: remove default exports from wasm exports
• KT-71800 Wasm compiler: Fix member generation for data classes with an array-type property
• KT-71580 String::toFloat on wasm behaves differently compared to other targets
• KT-71523 K/Wasm: cleanup after fix for KT-71474
• KT-71475 K/Wasm: KClass::qualifiedName returns incorrect result for nested or companion objects
• KT-71474 K/Wasm: KProperty*Impl equals work incorrectly for clabbale reference created in different files or modules
• KT-61130 K/Wasm: Function signatures may clash with base class internal methods from a friend module
• KT-70820 [Kotlin QG] wasm-validator fails when running compile[...]KotlinWasmJsOptimize
• KT-70819 [Kotlin QG] node.js fails when running wasmJs[...]Test KGP tasks
• KT-70394 Investigate increased wasm binary size after switching stdlib compilation to K2
• KT-69627 Remove create###Array functions from WASM stdlib
• KT-68509 Fatal: error validating input in compileProductionExecutableKotlinWasmJsOptimize

Compiler

New Features

• KT-71094 Kotlin/Native incremental compilation: fail compilation if cache build failed
• KT-21908 Support 'when' exhaustiveness checking for generic type parameter with sealed class upper bound
• KT-70679 Kotlin/Native: fill WritableTypeInfo from Swift Export type mapping
• KT-59798 Builder inference is not working when combined with let expression
• KT-54227 Cannot use nullable Nothing as reified type parameter
• KT-71430 Kotlin-to-Java direct actualization implementation
• KT-68163 Expose supplementary compiler warnings via CLI
• KT-69321 Swift export: enable auto-linkage of binary dependencies
• KT-11526 Improve diagnostics for "X overrides nothing"
• KT-49710 False positive NO_ELSE_IN_WHEN with nullable type as receiver
• KT-69729 Support calling super interface Java methods from Kotlin interface
• KT-69508 Improve "Public-API inline function cannot access non-public-API" check for the inline property accessors

Performance Improvements

• KT-71353 FP Kotlin performance degradation (around Cone types hierarchy changes)
• KT-71159 [K2] OOM on large enum classes with fields
• KT-69718 K2: Check for jvm nullability annotations in fir2ir is slow
• KT-68417 Native: LLVM 16 inliner is slow on K/N-produced modules
• KT-63971 K2: Redundant @ParameterName in abbreviated type in metadata

Fixes

• KT-71550 JVM IR: NPE on identity equals of boolean true with null
• KT-72214 -fpass-plugin (clangFlags) is not applied since Kotlin 2.0.20
• KT-68933 CompilationException: Back-end: Could not get inlined class
• KT-72255 Promote jspecify from warning to error
• KT-73065 CCE with context receivers
• KT-61033 K2: implement a diagnostic corresponding to K1's MISSING_BUILT_IN_DECLARATION
• KT-72345 K2: Method 'get' without @Override annotation not called
• KT-71260 K2: Internal compiler error in IrFakeOverrideSymbolBase.getOwner when there is no actual for expect
• KT-72996 false-positive unresolved reference error on an overloaded callable reference in a lambda return position on the left-hand size of an elvis operator
• KT-72552 AutoboxingTransformer fails on during linkage on nested lambdas with cinteroped types
• KT-71751 K2: Skipping code in last statement of lambda
• KT-71121 Kotlin/JS incremental compilation fails with KotlinIllegalArgumentExceptionWithAttachments
• KT-60521 Drop language versions 1.4 and 1.5
• KT-70461 K2: "Inline class types should have the same representation" caused by value class and smart check
• KT-72238 Argument type mismatch in builder inside extension function after ?:
• KT-70306 K2: Lambdas are unserializable: inferred from Java param ? super I
• KT-67383 Incorrect optimisation when optimising for loop with UByte
• KT-68653 Switch latest stable language version in Kotlin project to 2.1
• KT-71708 False negative UNSUPPORTED for collection literals as trailing return value
• KT-72281 K/N: "Failed to wait for cache to be built"
• KT-72017 Enum property reflection returning null KClassifier property for Enum classes defined inside Kotlin Scripts
• KT-69040 PCLA: deal with "deep" calls that can be fully analyzed properly
• KT-69920 K2: java.lang.IllegalArgumentException: FirNamedArgumentExpressionImpl.replaceConeTypeOrNull() during Space project compilation
• KT-69549 Try to move callable reference transformation earlier in pipeline
• KT-63944 Kotlin/Native: Cache flavor selection doesn't respect GC kind
• KT-71649 K2: Put operator on mutableMap<T?, V>() causes crashes on null key
• KT-70667 K2: "Type parameter * has inconsistent bounds" caused by wildcard and where-clause
• KT-70562 @SubclassOptInRequired cannot accept multiple experimental marker
• KT-69407 K2: Compiler crash (Shouldn't be here) due to unresolved reference in FirProjectionRelationChecker
• KT-71508 JAVA_CLASS_INHERITS_KT_PRIVATE_CLASS isn't reported when java class is inherited from an effectively private class
• KT-72178 K2: "Unexpected FirPlaceholderProjectionImpl" exception when using "_" as key type in EnumMap
• KT-70407 Error/warning message for @SubclassOptInRequired-annotated class should provide more context
• KT-72302 K2: no error on type operator in annotation parameter default value
• KT-58820 OPT_IN_USAGE_ERROR's message text does not account for SubclassOptInRequired
• KT-71662 PCLA: a type variable is not fixed on demand to a type containing a not-fixed type variable
• KT-69739 K2: "KotlinIllegalArgumentExceptionWithAttachments: Unexpected FirPlaceholderProjectionImpl" caused by unresolved references
• KT-72154 Dokka fails with not array: KClass<out Annotation> on Kotlin 2.1.20-dev with @SubclassOptInRequired
• KT-70756 K2. Compiler crash with FileAnalysisException on incorrect symbol in nesting lambda
• KT-72173 K2: simple object names from root package are resolved without imports in non-root packages when used as values
• KT-71480 JAVA_CLASS_INHERITS_KT_PRIVATE_CLASS isn't reported while java object isn't created
• KT-71034 Failing compiler/testData/codegen/box/inlineClasses/kt70461.kt
• KT-71016 K/Wasm: Failing compiler/testData/codegen/box/inlineClasses/kt70461.kt
• KT-52469 Deprecate reified type parameter instantiating into intersection types
• KT-71753 PCLA: false-negative operator ambiguity error on fixing a type variable on demand for an operator assignment
• KT-59871 K2: Fix introduced diagnostics
• KT-71563 'llegalStateException: Source classes should be created separately before referencing' when actualized through typealias and java direct actualization
• KT-64741 Avoid leaking ConeTypeVariable types in diagnostics from PCLA
• KT-60447 Builder inference fails to infer generic type argument from local class
• KT-69170 K2: "Unresolved reference" caused by generics and fun interfaces
• KT-71756 K2 evaluator: broken resolve of private members during debug of Kotlin project itself
• KT-68893 Invalid annotation in contract crashes with K2
• KT-71490 K2: missing REDUNDANT_ELSE_IN_WHEN
• KT-64403 Implement BlackBoxCodegenTestSpecGenerated for K2
• KT-71551 JVM IR K1: NPE on generating a function imported from an object from another module
• KT-71210 K2: false negative FUNCTION_CALL_EXPECTED / NESTED_CLASS_ACCESSED_VIA_INSTANCE_REFERENCE with companion objects
• KT-71528 K2/JVM: ClassCastException around Array<Nothing?>
• KT-71228 K2: "IllegalArgumentException: Failed requirement" caused by lambda parameter and class type
• KT-71738 K2: False negative REDECLARATION inside object expression
• KT-71701 K2: false positive CAN_BE_VAL with lateinit and non-in-place lambda
• KT-68694 K2 IDE / Kotlin Debugger: AE “Unresolved reference: <HIDDEN: samples/gen/classes/enum class/EnumClass.lam is invisible” on evaluating private lambda inside enum entry
• KT-70970 K2 IDE / Kotlin Debugger: AE “Only assignable IrValues can be set” on calling overloaded inc() operator on interface
• KT-70824 K2: NoSuchFieldException when evaluating private extension property
• KT-70390 K2 IDE / Kotlin Debugger: can't invoke lambda from private class during evaluation
• KT-68701 K2 IDE / Kotlin Debugger: AE “ERROR_CALL 'Unresolved reference: <HIDDEN: /privateLambda is invisible>#' type=IrErrorType(null)” on evaluating private top-level lambda
• KT-68695 K2 IDE / Kotlin Debugger: AE “Unsupported callable reference” on evaluating ::lateinitStr on private lateinit property
• KT-70861 K2 IDE / Kotlin Debugger: can't evaluate Clazz::class call for private class
• KT-34911 Improve error message for WRONG_ANNOTATION_TARGET: list applicable targets
• KT-71601 K2: When with a subject of type dynamic always considered exhaustive
• KT-33091 Kotlin/Native: Compiler crashes if an external class is declared
• KT-59651 K1/K2: Assertion error on external enum usage attempt
• KT-69939 Extract a category of internal FIR checkers from supplementary FIR checkers
• KT-70850 Pull down typeArguments from ConeKotlinType to ConeClassLikeType
• KT-71117 K2: "IllegalArgumentException: No type for StarProjection" with star projection and function type
• KT-71251 Native & JS K2: Missing check for calling isInitialized inside inline fun
• KT-70161 Native: extracting LLVM 16 on Linux makes the compiler print many "Ignoring unknown extended header keyword 'LIBARCHIVE.creationtime'" messages
• KT-71215 K2: UB due to the erroneous greening of the red code with multiple delegation with java
• KT-59386 K2: Missing CONSTANT_E

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