Update kotlin monorepo to v2 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.jetbrains.kotlin:kotlin-stdlib (source)	1.9.23 -> 2.0.0
org.jetbrains.kotlin:kotlin-serialization (source)	1.9.23 -> 2.0.0
org.jetbrains.kotlin:kotlin-gradle-plugin (source)	1.9.23 -> 2.0.0

---

Release Notes

JetBrains/kotlin (org.jetbrains.kotlin:kotlin-stdlib)

v2.0.0

Analysis. API

New Features

• KT-65327 Support reading klib contents in Analysis API

Performance Improvements

• KT-65560 K2: Anaysis API: ContextCollector triggers redundant resolution in the case of file elements
• KT-64987 Analysis API: 50GB memory allocation on creating empty kotlinx.collections.immutable.persistentMapOf
• KT-61789 K2: optimize getFirForNonKtFileElement for references inside super type reference
• KT-59498 K2: getOnAirGetTowerContextProvider took too much time due to on air resolve
• KT-61728 Analysis API: optimize AllCandidatesResolver.getAllCandidates

Fixes

• KT-65561 Analysis API: dummy.kt is not a physical file
• KT-65616 K2: FirDeclarationStatusImpl cannot be cast to FirResolvedDeclarationStatus from STATUS
• KT-65600 Analysis Api: FirFile for KtCodeFragments are created and not updated on changes
• KT-64919 K2 IDE: Implement KMP support for sealed class inheritors
• KT-64241 K2: Unresolved calls to functions in scripts depending on included projects
• KT-65813 Analysis API Standalone: FirDeclarationForCompiledElementSearcher does not find compiled elements
• KT-66052 AA: render expect/actual modifier
• KT-66795 KtCodeFragment.clone() is broken
• KT-66532 K2 CodeGen AA: missing annotation setup for function in source module but not in a compile target file
• KT-64833 Analysis API: Members implemented by delegation have no overridden symbols
• KT-62405 Analysis API: Symbols SUBSTITUTION_OVERRIDE have no overridden symbols
• KT-66749 K2: "Collection contains no element matching the predicate" on an unresolved call
• KT-62832 K2: ClassCastException: FirDeclarationStatusImpl cannot be cast to FirResolvedDeclarationStatus
• KT-66719 AbstractGetKlibSourceFileNameTest: The dependency to ":native:analysis-api-klib-reader" breaks JPS compilation
• KT-66603 Analysis API: support type annotations in KtPsiTypeProviderMixIn#asPsiType
• KT-64505 Analysis API Standalone: Remove test-specific calculation of sealed class inheritors
• KT-66013 Analysis API Standalone: Sealed inheritors aren't correctly calculated for source classes
• KT-62880 K2 IDE: Unresolved java annotation methods in KDoc
• KT-66530 K2: Analysis API: KtPsiTypeProvider#asKtType crashes on PsiClassType for Java type parameter with wrong use site
• KT-65571 Support VirtualFile inputs to Analysis API modules
• KT-66485 Substituted types are not provided for callable references
• KT-66498 Analysis API: 'KtFe10SymbolDeclarationOverridesProvider' considers a class to be a subclass of itself
• KT-64579 K2 IDE: "Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirValueParameterImpl(Source) but FirArgumentListImpl found"
• KT-65978 Analysis API: Use soft references in FileStructureCache
• KT-64051 K2 IDE: Analysis API: Unresolved links to typealias in KDoc
• KT-66189 K2 / IDE: KtFirExpressionTypeProvider bugs
• KT-61422 K2 IDE: "No array element type for vararg value parameter: org.jetbrains.kotlin.fir.declarations.impl.FirValueParameterImpl"
• KT-66276 K2: Analysis API: TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM false positive for script parameter
• KT-66232 K2: Analysis API: cover ScriptWithCustomDefDiagnosticsTestBaseGenerated by LL FIR tests
• KT-60996 K2: Stub Based Deserializer: Set versionRequirements to enable VERSION_REQUIREMENT_DEPRECATION diagnostics
• KT-66306 K2: Analysis API: drop ability to enable global phase resolve lock
• KT-55750 LL FIR: Implement multi-threaded resolve
• KT-65563 Analysis API: Missing session component FirExpectActualMatchingContextFactory in LLFirLibrarySession
• KT-66173 K2: No 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter' in array owner: LLFirLibrarySession
• KT-66238 Gradle kotlin build scripts - a lot of unresolved symbols after latest changes in kotlin master
• KT-65099 K2: Recursive local storage cache check for Fir2IrDeclarationStorage::createAndCacheIrPropertySymbols()
• KT-65265 Analysis API: Add library session invalidation tests
• KT-56288 Analysis API: Add tests for session invalidation on the Analysis API side
• KT-64000 K2: make AnnotationArgumentsStateKeepers more accurate
• KT-63606 K2: Analysis API: rewrite FirLazyAnnotationTransformer to avoid redundant transformations
• KT-65191 KtFirMultiplatformInfoProvider#getExpectForActual doesn't return expect function for slightly broken code
• KT-62136 Analysis API: Add concurrent tests for CleanableSoftValueCache
• KT-61222 K2: Add lifecycle management for KtResolveExtension
• KT-65960 Analysis API: Test infrastructure indexes binary libraries from decompiled files instead of stubs during IDE mode tests
• KT-65240 K2: CodeGen API fails to resolve Annotation parameter type when it runs FIR2IR for a class with a parent class from other module if the parent class has an annotation from another module
• KT-65344 K2: make FirScript statements (declarations) independent
• KT-65930 AA: receiver type for Int?::foo misses nullability
• KT-65914 AA: receiver type for this::foo returns return type of the target callable
• KT-62071 Analysis API: KtFirScopeProvider.getScopeContextForPosition throws exception when ImplicitReceiverValue.implicitScope is null
• KT-65780 K2: polish FileStructure implementation for FirFile
• KT-62840 K2 Script: everything around destructuring declaration on top level of scripts are broken
• KT-64528 K2 IDE: MPP: unregistered component 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter'
• KT-64921 K2 IDE: references in platform code resolve to expect classifier instead of actual
• KT-61296 K2: do not resolve the entire file on lazyResolve call if FirFile is passed
• KT-65683 Analysis API: Dangling file session creation causes a computeIfAbsent contract violation
• KT-64884 K2 IDE. FP [NAMED_PARAMETER_NOT_FOUND] for copy method of library data class when class has not parameter-properties
• KT-65763 K2: value parameter from library data class copy have RAW_FIR phase
• KT-65665 Analysis API: support KtDelegatedSuperTypeEntry in KtFirExpressionInfoProvider.isUsedAsExpression
• KT-62899 K2 IDE. IDE ignores @Suppress annotation for errors
• KT-65655 Analysis API: KtCodeCompilationException should not strongly reference FIR sessions
• KT-62302 Support PsiType -> KtType conversion
• KT-64604 K2: IDE K2: "Modules are inconsistent during performance tests"
• KT-65345 K2: unify FirDesignation and LLFirResolveTarget
• KT-61757 K2 IDE: resolution to buitlins does not work for from common module
• KT-65268 K2: Checking the presence of the delegated constructor call forces AST loading
• KT-63330 Analysis API: Stub-based deserialized symbol providers provide unresolved enum entry annotation arguments
• KT-65418 Analysis API: LLFirAbstractSessionFactory loads anchor module sessions eagerly
• KT-64718 Analysis API: do not expose SealedClassInheritorsProvider and FirRegularClass to IDE Plugin
• KT-65075 K2: getContainingDeclaration() is broken for declarations inside code fragments
• KT-61332 Support KtTypeCodeFragment in PsiRawFirBuilder
• KT-65150 AA: incorrect result from KtTypeProvider#getReceiverTypeForDoubleColonExpression for Java static method
• KT-56551 LL FIR: implement parallel resolve for jumping phases
• KT-65223 Psi: avoid KtFile usages
• KT-65307 Analysis API FE10: support KtFe10AnalysisSessionProvider.getAnalysisSessionByUseSiteKtModule
• KT-62695 K2 IDE: Unresolved extension functions in KDoc
• KT-65152 Analysis API: KDoc references to packages are not fully resolved
• KT-64988 K2 IDE: Navigation from the named argument in safe call does not work
• KT-63195 AA: incorrect results from KtTypeProvider#getReceiverTypeForDoubleColonExpression
• KT-64074 K2: Investigate LL divergence for Script.testTopLevelPropertyInitialization
• KT-62441 K2: IDE K2: "No dangling modifier found"
• KT-62895 K2 IDE. FP 'when' expression must be exhaustive with sealed interface from library
• KT-64993 Analysis API: KtExpressionTypeProvider.getExpectedType works incorrectly for arguments of safe calls
• KT-64883 Allow direct creation of KtCommonFile
• KT-64646 K2: properly forbid ast loading during raw fir phase in tests
• KT-64862 Psi: missed parenthesis in type reference presentation
• KT-62893 K2 IDE. FP 'when' expression must be exhaustive with Java sealed interface from library
• KT-63795 K2: lazyResolveToPhase(BODY_RESOLVE) cannot be called from a transformer with a phase BODY_RESOLVE from SealedClassInheritorsProviderIdeImpl
• KT-64805 Analysis API: introduce common entry point for multi-file test cases
• KT-64714 K2: Analysis API: CollectionsKt.map doesn't resolves from Java in kotlin repo
• KT-64647 K2: Allow to calculate decompiled inheritors for sealed classes in tests
• KT-64595 AA: stackoverflow while simplifying a type with a recursive type parameter
• KT-64825 Analysis API. Cannot compute containing PSI for unknown source kind 'org.jetbrains.kotlin.KtFakeSourceElementKind$DefaultAccessor' exception on getContainingSymbol call for default setter parameter
• KT-64080 K2: Analysis API: On-air resolve does not trigger resolution of delegated super call arguments
• KT-64243 K2: proper lazy resolution for fake overrides
• KT-62891 K2 IDE. FP [EXPOSED_FUNCTION_RETURN_TYPE] on overriding library method which returns protected type
• KT-62667 K2: Cannot find enclosing declaration for KtNameReferenceExpression (on-air, imports)
• KT-61890 Analysis API: Migrate KtFirScopeProvider to ContextCollector instead of onAirResolve
• KT-64197 K2: Code fragments are only supported in JVM
• KT-62357 K2 IDE. False positive on generated component methods and false negative on getter of @JvmRecord classes in Java
• KT-62892 K2 IDE. Java outer class from other module is not resolved when nested class is accessed with fq name in a type position
• KT-62888 K2 IDE. IDE infers reference to KMutableProperty as reference to just KProperty
• KT-64584 K2: StubBasedFirDeserializedSymbolProvider: support deserialization of delegated declarations
• KT-60324 K2 IDE: "NoSuchElementException: List is empty at JavaOverrideChecker#buildErasure"
• KT-62896 K2 IDE. FP ABSTRACT_MEMBER_NOT_IMPLEMENTED on inheriting class from library which implements interface by delegation
• KT-62947 Analysis API: Error while resolving FirPropertyImpl
• KT-64468 Analysis API: Implement mixed multi-module tests which support different kinds of KtModules
• KT-56541 Symbol Light Classes: No @NotNull annotations are generated for accessors of lateinit properties of unresolved types
• KT-63547 K2 IDE. False Positive AMBIGUOUS_ANNOTATION_ARGUMENT
• KT-64205 Analysis API: Do not import non-top-level callables by default
• KT-63056 K2: Cannot mutate an immutable ImplicitReceiverValue on FirCodeFragment analysis
• KT-64108 K2: KtFirSymbolDeclarationOverridesProvider shouldn't provide fake overrides
• KT-63752 K2: java.lang.StackOverflowError FirFieldSymbol.getHasInitializer
• KT-63718 Analysis API: Stub-based dependency symbol providers of library source sessions compute the wrong package name sets
• KT-64225 K2: IDE K2: "FirLazyBlock should be calculated before accessing" in evaluate debuger completion
• KT-64186 Analysis API: ContextCollector provides incorrect scopes for anonymous objects
• KT-63979 K2 IDE: presentation of types in completion is too verbose
• KT-63681 K2: LL FIR: Improve isResolved check coverage of after lazy resolution
• KT-62982 K2: Cannot get a PSI element for 'Enum.values'
• KT-59732 FirLazyResolveContractViolationException: lazyResolveToPhase(IMPORTS) cannot be called from a transformer with a phase IMPORTS from serialisation plugin
• KT-62676 K2 IDE: Reference shortener does not recoginize redundant this references
• KT-63627 K2 IDE: shorten reference shortens required qualifier
• KT-62675 K2 IDE: Reference shortener does not recoginize redundant labels
• KT-60957 K2: Analysis API: Reference shortener does not work correctly with invoke function calls on properties
• KT-63771 fe10: KtNamedClassOrObjectSymbol#isInline does not cover value classes
• KT-60327 K2 IDE. "IllegalArgumentException: source must not be null" during delegation declaration
• KT-62421 K2: IDE K2: "lazyResolveToPhase(BODY_RESOLVE) cannot be called from a transformer with a phase BODY_RESOLVE."
• KT-62587 K2 IDE. FP unresolved reference on accessing nested class in annotation argument
• KT-63700 K2: "FirLazyExpression should be calculated before accessing" in the case of secondary constructor
• KT-61383 K2: 'KtCompilerFacility' fails on code fragment compilation in library sources with duplicated dependencies
• KT-62111 K2 IDE. IllegalArgumentException on for loop with iterator declaration attempt
• KT-63538 Analysis API: Removing a contract statement via PsiElement.delete() does not trigger an out-of-block modification
• KT-63694 K1/K2 IDE. "RuntimeException: Broken stub format, most likely version of kotlin.FILE (kotlin.FILE) was not updated after serialization changes" exception on incorrect class name
• KT-63660 K2: expect-actual gutter icons must be shown when declarations are matched but incompatible
• KT-63560 Analysis API: Modifiable PSI tests cannot rely on the cached application environment to allow write access
• KT-62980 Implement KtFirSimpleNameReference#getImportAlias
• KT-63130 Analysis API: No receiver found for broken code during commit document
• KT-62705 K2: "lazyResolveToPhase(IMPORTS) cannot be called..." from light classes
• KT-60170 K2 IDE: CCE from KtFirCallResolver on invalid code with wrong implicit invoke
• KT-61783 K2: Analyze 'KtCodeFragment' in a separate session
• KT-62010 K2: IDE K2: "ConeClassLikeTypeImpl is not resolved to symbol for on-error type"
• KT-62957 Analysis API: NullPointerException on call resolution when builtins are not available
• KT-61252 K2: IDE K2: "By now the annotations argument mapping should have been resolved"
• KT-62935 Analysis API: kotlin.Cloneable should not be available in Kotlin/Native sources
• KT-62910 Analysis API: create AbstractFirPsiNativeDiagnosticsTest for LL FIR
• KT-63096 K2: Analysis API: KotlinAnnotationsResolver for IDE is created with incorrect scope
• KT-62310 K2 IDE. False positives errors with external annotations
• KT-63282 K2 Script: annotation arguments phase should resolve propagated annotations
• KT-62397 K2 IDE. FP Error in the editor on RequiresOptIn annotation from the lib despite the warning level
• KT-63223 Analysis API: reference to declarations with kotlin* package are not resolved
• KT-62626 IllegalStateException: Cannot build symbol for class org.jetbrains.kotlin.psi.KtScriptInitializer
• KT-62693 K2: IDE K2: "PSI should present for declaration built by Kotlin code"
• KT-62674 K2: "Scope for type ConeClassLikeTypeImpl" is null from transitive dependencies
• KT-61889 Analysis API: Migrate KtFirReferenceShortener to ContextCollector instead of FirResolveContextCollector
• KT-62772 Analysis API: No 'org.jetbrains.kotlin.fir.java.FirSyntheticPropertiesStorage'(31) in array owner: LLFirSourcesSession when analysing builtins in a context of common code
• KT-60319 K2 IDE: "Stability for initialized variable always should be computable"
• KT-62859 K2 IDE: "Evaluate expression" throws exception when calling "Any?.toString()"
• KT-63058 K2 IDE: Code completion unexpectedly imports static/companion object method
• KT-62588 getExpectedType should not calculate type of the expression
• KT-61990 K2: Unexpected returnTypeRef for FirSyntheticProperty
• KT-62625 K2: 'FirLazyExpression should be calculated before accessing' for unresolved super type
• KT-62691 K2: optimize getFirForNonKtFileElement for references inside 'where'
• KT-62834 K2: missing file node level in control flow builder
• KT-62768 Analysis API: No 'org.jetbrains.kotlin.fir.scopes.impl.FirDelegatedMembersFilter'(44) in array owner: LLFirSourcesSession exception on analysing common code
• KT-62874 K2: FirLazyExpression should be calculated before accessing
• KT-62407 Analysis API: resolve [this] in KDoc to extension receiver
• KT-61204 K2: "FirLazyExpression should be calculated before accessing in ktor HttpBinApplication"
• KT-61901 Analysis API: Declared member scopes for Java classes are missing static members
• KT-61800 Analysis API: Provide separate declared member scopes for non-static and static callables
• KT-61255 Analysis API: Get rid of valueOf, values and entries from a declared member scope
• KT-62466 Expected type for functional expression should include inferred types
• KT-61203 IDE K2: "Expected FirResolvedArgumentList for FirAnnotationCallImpl of FirRegularClassImpl(Source) but FirArgumentListImpl found"
• KT-61791 Analysis API: Implement combined getPackage for combined Kotlin symbol providers
• KT-62437 K2 IDE. Resolution does not work inside lambda expression in constructor argument in supertypes
• KT-62244 K2: Analysis API Standalone: Resolving klib dependencies from binary roots terminates application
• KT-62897 K2 IDE. Unresolved declarations from libraries which are doubled in intellij project libraries
• KT-61615 K2: No 'org.jetbrains.kotlin.fir.analysis.js.checkers.FirJsModuleKind' in array owner: LLFirSourcesSession
• KT-59334 K2: LLFirImplicitTypesLazyResolver problems
• KT-62038 K2: Nested classes are missing in symbol light class structure tests for libraries
• KT-61788 Analysis API: Symbol for FirAnonymousInitializer cannot be null
• KT-62139 Analysis API: KtFe10AnalysisSession.createContextDependentCopy does not need validity check
• KT-62090 Analysis API: introduce an API to get a substitution formed by class inheritance
• KT-62268 K2 IDE. No autocompletion and IllegalStateException for Pair
• KT-60325 K2 IDE. "IllegalArgumentException: source must not be null" on throw usage attempt
• KT-61431 K2: KtPropertyAccessorSymbolPointer pointer already disposed for $$result script property
• KT-58490 K2: LLFirTypeLazyResolver problems
• KT-58494 K2: LLFirAnnotationArgumentsLazyResolver problems
• KT-58492 K2: LLFirBodyLazyResolver problems
• KT-58769 K2: LL FIR: implement platform-dependent session factories
• KT-60343 K2 IDE. IllegalArgumentException on passing incorrect type parameter to function
• KT-61842 K2: reduce number of "in-block modification" events
• KT-62012 K2: "KtReadActionConfinementLifetimeToken is inaccessible: Called outside analyse method"
• KT-61371 K2: Analysis API standalone: register compiler symbol provider for libraries in standalone mode
• KT-60611 K2: reduce number of "in-block modification" events
• KT-61425 Analysis API: Provide a way to get a declared member scope for an enum entry's initializing anonymous object
• KT-61405 Analysis API: An enum entry should not be a KtSymbolWithMembers
• KT-55504 AA: remove dependency on :compiler:cli from standalone AA
• KT-60904 K2: IDE K2: "For DESTRUCTURING_DECLARATION_ENTRY with text _, one of element types expected, but FirValueParameterSymbol found"
• KT-61260 K2 Scripts: Containing function should be not null for KtParameter
• KT-61568 FIR Analysis API: collectCallCandidates gives presence to the top level functions in the presence of more suitable overrides
• KT-60610 K2 IDE: move "out of block" processing logic into LL FIR
• KT-61597 Analysis API: KotlinIllegalStateExceptionWithAttachments: expected as maximum one expect for the actual on errorneous code with multiple expects
• KT-59793 K2: class org.jetbrains.kotlin.fir.declarations.impl.FirErrorImportImpl cannot be cast to class org.jetbrains.kotlin.fir.declarations.FirResolvedImport
• KT-61599 K2: ContextCollector: Support smart cast collection
• KT-61689 Analysis API: ContextCollector provides incorrect context in scripts
• KT-61683 Analysis API: resolve ambiguities in kotlin project
• KT-61245 Analysis API: ContextCollector provides incorrect context for supertype constructor calls
• KT-60384 K2: Opening @JvmName source in IDEA: NPE at PsiRawFirBuilder$Visitor.toFirConstructor()
• KT-60918 K2 IDE: "FirDeclaration was not found for class org.jetbrains.kotlin.psi.KtDestructuringDeclarationEntry, fir is null"
• KT-61013 K2 Scripts: LLFirReturnTypeCalculatorWithJump: No designation of local declaration
• KT-59517 K2 IDE: KotlinExceptionWithAttachments: Modules are inconsistent
• KT-61331 K2: add cache restoring in case of existing context
• KT-61408 K2: IDE K2: "Inconsistency in the cache. Someone without context put a null value in the cache"

Analysis. Light Classes

Performance Improvements

• KT-63486 SLC: a lot of RAM is allocated in org.jetbrains.kotlin.asJava.LightClassUtil.isMangled

Fixes

• KT-66692 SLC: findAttributeValue for attribute w/ default value in Java returns null
• KT-61734 SLC: wildcard suppression not honored
• KT-65112 Symbol Light Classes don't support annotations on type parameters
• KT-65843 K2: Light method returns kotlin.Unit type for TestResult return type
• KT-65653 SLC: wrong binary resolution to function with value class
• KT-65393 SLC: missing deprecated-hidden property
• KT-64772 SLC: presence of source PSI for compiler-generated declaration
• KT-65425 K2 IDE: Seeing a reference to the class generated by compiler plugin exposed from Java code caused NPE from light classes
• KT-64937 SLC: internal setters are not mangled
• KT-63949 K2 IDE. Analyze hang on @Autowired constructor analysis
• KT-63087 K2 IDE: in .java source reference to JvmName names on unsigned type / value class are unresolved
• KT-64605 K2 IDE: usage of @Repeatable annotation in Java: false positive "Duplicate annotation"
• KT-64795 SLC: distinguish last v.s. non-last vararg value parameter type during binary resolution
• KT-61605 K2 IDE: Light elements do not obey platform contracts
• KT-57536 SLC: no need to populate members with expect modifier
• KT-64320 Decouple kotlin psi from java PSI
• KT-64282 Decouple KotlinIconProviderService from java PSI
• KT-63552 Symbol Light Classes don't support arrayOf and similar without parameters in property initializers and default parameter values

Apple Ecosystem

• KT-64096 Diagnostic when embedAndSign used for framework with cocoapods-dependencies
• KT-63821 Copy framework to BUILT_PRODUCTS_DIR in the embedAndSign task
• KT-67892 KotlinNativeLink task instantiates with a fixed list of apiFiles
• KT-66446 Diagnostic never showed, and build fails when CocoaPods dependency is used with embedAndSign task and linking type is dynamic
• KT-66445 Diagnostic never showed when CocoaPods dependency is used with embedAndSign task and linking type is static
• KT-62373 "Xcode higher than tested" diagnostic
• KT-63212 podInstall task fails without a proper diagnostic when xcodeproj gem is outdated

Backend. Native. Debug

• KT-65553 K2: Native: kt42208WithPassingLambdaToAnotherFunction test fails with K2
• KT-57365 [Native] Incorrect debug info on inline function call site

Backend. Wasm

New Features

• KT-65009 Generate TypeScript definitions for the @JsExport declarations in K/Wasm
• KT-58088 [PL] Support & enable partial linkage for Wasm
• KT-66327 Include information about particular Wasm target into KLib manifest

Fixes

• KT-66465 WASM support doesn't appear to be able to see some common declarations
• KT-66905 K/Wasm: support new version of exception handling proposal
• KT-66515 Wasm: "call param types must match" during the build
• KT-67435 K/Wasm: import.meta.url transforming into absolute local path in webpack
• KT-65777 Implement named export for Kotlin/Wasm
• KT-65660 [WasmJs] Support catching JS exceptions
• KT-65824 Wasm: Allow unsigned primitives to be used inside functions annotated with @JsExport
• KT-66103 Wasm: companion object is not initialized in test initializers1.kt
• KT-66471 Null method reference with Kotlin/Wasm on 2.0.0-Beta4
• KT-65210 K/Wasm ::class operator produces Number KClass for Short expression
• KT-66065 [Wasm] Make specialisations for closured primitive values
• KT-64890 K/Wasm compiler crash with external class and Kodein
• KT-66104 Wasm: compiler crash: NoSuchElementException: Sequence contains no element matching the predicate
• KT-65778 Create the same TypeScript tests infrastructure for Kotlin/Wasm that we have now for Kotlin/JS
• KT-65411 Kotlin/Wasm: Boolean boxed instances are not the same
• KT-65713 Kotlin/Wasm generates a wrapper that cannot run in Deno
• KT-63939 Kotlin/Wasm Support lazy associated object initialisation
• KT-61888 [Kotlin/wasm] in kotlin.test support for @AfterTest for async tests
• KT-64803 K/Wasm: non-capturing lambdas are not singleton unlike same lambdas in jvm
• KT-64449 K2: Implement K1WasmWasiCodegenBoxTestGenerated for K2
• KT-64829 K/Wasm: division remainder has a wrong sign
• KT-58852 WASM: two methods with different varargs: Class korlibs.template.dynamic.DynamicShape has 2 methods with the same signature [register(kotlin.Array<T of kotlin.Array>)
• KT-61263 K/Wasm: add a way to turn on k2 in wasm examples using Compose
• KT-62863 Execution failed for task ':kotlinx-serialization-properties:wasmJsD8Test' in serialization in the K2 QG
• KT-62657 K/Wasm: switch to json repots for Kotlin Wasm Benchmarks
• KT-62147 [Kotlin/Wasm] Nothing typed when expression cause a backend error
• KT-61958 Update SpiderMonkey and return its usage in box tests when they switch to the final opcodes for GC and FTR proposals
• KT-60828 K/Wasm: return br_on_cast_fail usages
• KT-59084 WASM: "RuntimeError: illegal cast" caused by inline class and JsAny
• KT-60700 [WASM] test FirWasmCodegenBoxTestGenerated.testSuspendUnitConversion failed after KT-60259

Compiler

New Features

• KT-24664 No smartcast on stable property if receiver had non-null assertion
• KT-45375 Generate all Kotlin lambdas via invokedynamic + LambdaMetafactory by default
• KT-23915 Add smart cast to non-nullable type after elvis operator
• KT-61077 Support provideDelegate inference from var property type
• KT-59688 K2: consider removing smartcasts only from the only visibile property with specific name, not from all of them
• KT-7389 Intersection type for type parameter with multiple upper bounds in star projection
• KT-63477 Consider supporting builder-style type inference from Unit coercion of last statements in lambdas
• KT-61907 K2: builder inference works with assignments to member properties
• KT-61909 K2: builder inference infers correct types from assignments to extension properties
• KT-59551 K2: builder inference works with anonymous functions if builder parameter has a receiver with a postponed type variable
• KT-65443 [K/N] Implement header caches
• KT-4113 Smart casts for properties to not-null functional types at invoke calls
• KT-65681 K2: Improve error message of UPPER_BOUND_VIOLATED when upper bound is a captured type or other non-denotable type
• KT-32754 Choose existing extensions over additional built-ins members from JDK except overrides
• KT-57800 Support synthetic properties on super receiver
• KT-64350 K2: deprecate using typealias as a callable qualifier in imports
• KT-26565 Choose existing extensions over additional built-ins members from JDK
• KT-65478 JVM: Change inlined variable naming format
• KT-64702 Upper bound of type parameter is ignored when capturing of in-projection appears in out position
• KT-60274 K2: builder inference works through a delegated local variable inside builder argument
• KT-65859 Calls refinement extension point
• KT-15220 Reuse resolution results of common code for platform modules in multiplatform projects
• KT-60476 K2: False positive NO_VALUE_FOR_PARAMETER in platform code for value class with default parameter in common declaration
• KT-65153 K/N: extract liveness analysis to a separate phase
• KT-59098 Support -Xjdk-release=1.6/1.7 with -jvm-target 1.8
• KT-63670 Implement platform specific declaration clash diagnostics across all backends
• KT-62547 Introduce a language feature flag for smartcasts based on "memory" variables
• KT-60820 K1: Empty vararg value is inserted in serialized annotation call with expect default vararg value
• KT-58172 Forbid expect class A actual constructor
• KT-54443 Smart cast to non-null after safe-call in require
• KT-25747 DFA variables: propagate smart cast results from local variables
• KT-22997 Smart-cast should merge is-check for non-nullable type and a null check to a nullable type
• KT-22996 Smart casts should observe nullability after is-check with a nullable subject type
• KT-22004 Allow to resolve CONFLICTING_OVERLOADS with Deprecated(HIDDEN)
• KT-61955 Support more wider actual member visibility, if the expect member is effectively final
• KT-59504 K2 compiler does not require resolved 'componentX' functions for the placeholder ('_') variables in the destructuring declarations
• KT-62239 Allow enum entries without parentheses uniformly
• KT-11712 Smart cast is not applied for invisible setter

Performance Improvements

• KT-47545 NI: Slow type inference involving large when-expression (ConstraintInjector.processConstraints)
• KT-62714 Do not add nullability annotations to the methods of inner classes in enum entries
• KT-62903 Unoptimzied when compilation
• KT-67388 FP intellij: performance degradation in build 611
• KT-67507 K2: Slow compilation times when a class has a lot of possibly conflicting declarations
• KT-65005 K2: Investigate testCommonSuperTypeContravariant performance
• KT-65996 Compiler enters endless loop
• KT-66341 K2: Don't build IdSignatures in FIR2IR with IR f/o builder
• KT-66172 K2: Improve memory consumption of KtPsiSourceElement
• KT-50860 Combination of array set convention and plusAssign works exponentially
• KT-62798 'in' range checks are not intrinsified in kotlin-stdlib
• KT-65579 K2: performance regression in FP Space
• KT-61635 K2: getConstructorKeyword call in PsiRawFirBuilder.toFirConstructor forces AST load
• KT-62619 FIR: Checker performance regression due to MISSING_DEPENDENCY checkers
• KT-62044 Do not add nullability annotations to the methods of anonymous class
• KT-62706 Optimize KtSourceElement.findChild()
• KT-62513 Do not add nullability annotations to the methods of local classes
• KT-61991 K2: avoid redundant full body resolution for properties during implicit type phase
• KT-61604 [K/N] Bitcode dependency linking is slow for large compilations
• KT-61121 [K/N] Kotlin Native compiler performance is slow when generating large frameworks
• KT-57616 K2: Consider optimizing reversed versions of persistent lists in FirTowerDataContext

Fixes

• KT-67486 K2: Calling method from a Java (implementing a Kotlin class) with named parameters is no longer possible if Java method has different parameter names
• KT-64615 Inconsistent error messages for platform type nullability assertions
• KT-65062 K2: build kotlinx.collections.immutable and pass to CI
• KT-68164 Smart cast fails for KT-49404
• KT-56545 Fix incorrect functions mangling in JVM backend in case of accidental clashing overload in a Java subclass
• KT-49404 Fix type unsoundness for contravariant captured type based on Java class
• KT-64598 K2: build Arrow with k2 user project
• KT-61039 False positive ABSTRACT_MEMBER_NOT_IMPLEMENTED in K1 when expect actual super types scopes don't match
• KT-56408 Inconsistent rules of CFA in class initialization block between K1 and K2
• KT-63580 "AssertionError: access of const val: GET_FIELD" caused by const value and variable with delegation
• KT-67993 K2: PCLA Inference throws exception with local objects
• KT-61768 Wrong bytecode index in LineNumberTable when there is an incremental operation
• KT-63567 "NoSuchMethodError" on getting value of lazily initialized property by companion's const value
• KT-56078 K2: build kotlinx.coroutines
• KT-67609 K2: False negative INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION_ERROR
• KT-57750 Report ambiguity error when resolving types and having the same-named classes star imported
• KT-65603 K2: No approximation is done on public, but effectively private property
• KT-59932 K2: Disappeared AMBIGUOUS_ANONYMOUS_TYPE_INFERRED
• KT-59906 K2: Disappeared CAPTURED_VAL_INITIALIZATION
• KT-53886 NoSuchMethodError exception in Kotlin/Native compiler
• KT-57678 K2: Inconsistency in how K2 analyzes unresolved code for loops and changing closures
• KT-57871 K1/K2 inconsistency on if-conditional without else-branch in parenthesis
• KT-56384 K2: build IntelliJ monorepo master branch
• KT-49191 Leaked integer literals from lambda with flexible return type
• KT-65812 K2: "OutOfMemoryError: Java heap space" in kotlin.utils.SmartList.add
• KT-67224 K2/Native: Member overrides different '@Throws' filter from separate module
• KT-65623 K2: Unresolved reference in connection with casts
• KT-64136 K2: NSME with Anvil compiler plugin
• KT-51241 Provide a error when override method has different set of context receivers
• KT-52920 Confusing "Multiple arguments applicable for context receiver" error message
• KT-67912 K2: Cannot inference type properly from inline function with Type parameter
• KT-68056 Prohibit referencing java field in case of conflict with property from companion object of the derived class
• KT-61129 K2: Implement error suppression warning
• KT-67367 K2: Incorrect resolution to top-level function with less specific signature in presence of SAM constructor on the same tower level
• KT-50179 Fix DUPLICATE_LABEL_IN_WHEN warning with new rules of complex boolean constants
• KT-45334 Prohibit referencing constructors of sealed classes by its inner members
• KT-59943 K2: Disappeared OPERATOR_MODIFIER_REQUIRED
• KT-67875 K2: Resolution ambiguity between Iterable and varargs
• KT-67699 Not enough information to infer type argument for 'Error' using Arrow's Raise context receiver since Kotlin 2.0.0-Beta3
• KT-66527 K2: type mismatch on override for type
• KT-59897 K2: Disappeared PACKAGE_OR_CLASSIFIER_REDECLARATION
• KT-50020 K2: False-negative USAGE_IS_NOT_INLINEABLE when lambda in receiver position
• KT-44557 Implement main function detection to FIR
• KT-67810 K2: public-API inline function cannot access non-public-API annotation enum
• KT-66447 Implement KT-59138 under a language feature
• KT-54862 Anonymous type can be exposed from private inline function from type argument
• KT-37592 Property invoke of a functional type with receiver is preferred over extension function invoke
• KT-51194 False negative CONFLICTING_INHERITED_MEMBERS when dependency class contained in two different versions of the same dependency
• KT-67221 K2: "new inference error [NewConstraintError at Incorporate TypeVariable" for captured type
• KT-66701 K2: Java interface method override via Kotlin class rejected
• KT-60604 K2: introduced NON_PUBLIC_CALL_FROM_PUBLIC_INLINE, @PublishedApi needed for constants in annotations
• KT-64309 Generate a variable mapping for continuation parameter in suspend methods just from the start
• KT-65438 K2: Introduce WEAKLY_HIDDEN concept to built-in-JDK content mapping
• KT-65235 JDK 21 might lead to change in overloads resolution
• KT-66768 K1: False positive UNRESOLVED_REFERENCE in super.getFirst/getLast call
• KT-67106 Platforms libs-dependant autotests for ObjC checkers
• KT-65440 K2: Mark all potential implementations of List.ge

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