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Releases: JetBrains/kotlin
Releases Tags
Releases ยท JetBrains/kotlin
Release list
* Kotlin 2.4.20-Beta2
* Kotlin 2.4.10
* Kotlin 2.4.10-RC2
* Kotlin 2.4.10-RC
* Kotlin 2.4.20-Beta1
* Kotlin 2.4.0
* Kotlin 2.4.0-RC2
* Kotlin 2.4.0-RC
* Kotlin 2.4.0-Beta2
* Kotlin 2.3.21
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* Kotlin 2.4.10-RC2
* Kotlin 2.4.10-RC
* Kotlin 2.4.20-Beta1
* Kotlin 2.4.0
* Kotlin 2.4.0-RC2
* Kotlin 2.4.0-RC
* Kotlin 2.4.0-Beta2
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Kotlin 2.4.20-Beta2
Kotlin 2.4.20-Beta2 Pre-release
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KotlinBuild released this 22 Jul 11:41
v2.4.20-Beta2
e9e2924
Changelog
Analysis API
* KT-86546 Check suspicious when over ConeKotlinType in ConeTypeCompatibilityChecker
* KT-65417 K2 IDE: KTOR false positive expect-actual matching error on enum class because of implicit clone() in non-JVM source sets
Analysis API. FIR
* KT-69727 K2 IDE. Wrong error in the editor on calling clone function of actual enum instance in non-jvm platform
* KT-69726 FP errors on declaring fun clone() in actual enum in not-jvm source-set
Analysis API. Infrastructure
* KT-84914 Do not publish analysis-api-test-framework
* KT-86986 kotlin-compiler-common-for-ide bundles unrelated Analysis API modules
Analysis API. Light Classes
* KT-87301 SymbolLightAccessorMethod#isValid returns false for delegated properties
* KT-87171 SLC: non-mapped Kotlin collection supertype is dropped from supertype list
* KT-87250 JvmExposeBoxed: light classes shouldn't be autogenerated for private declarations
Analysis API. PSI
* KT-84925 Move KtReference to the Kotlin IntelliJ plugin
Analysis API. Standalone
* KT-61404 Analysis API: implement proper library publishing structure
Analysis API. Stubs and Decompilation
* KT-86250 KotlinIllegalArgumentExceptionWithAttachments: No fir element was found for KtDestructuringDeclaration on destructuring declaration typing
* KT-64901 Inconsistency between AST and Stub tree in the case of non-local destructuring declarations
Analysis API. Surface
Performance Improvements
* KT-70021 Analysis API: optimize KaFirExpressionTypeProvider.expressionType for simple cases
Fixes
* KT-87337 Integrate KaContextParameterOwnerSymbol into KaCallableSymbol
* KT-78234 Analysis API: Context parameters for accessors
* KT-86786 Investigate suspicious when over ConeKotlinType in ConeKotlinType.getDirectSupertypes
* KT-72902 Shouldn't KaSymbolProvider#findClass return KaNamedClassSymbol?
* KT-87237 No expected type inside arrayOf in annotation entries
* KT-87143 findKDoc returns parent property KDoc for accessors of an overriding property
* KT-83224 Support "Compile-time functions" in the Analysis API
* KT-87174 Expected class KaFirSymbol instead of class KaFirPackageSymbol exception
* KT-87199 [Analysis API] Remove KaEnumEntryInitializerSymbol
* KT-85206 Provide information about potentially removable context-sensitive resolution qualifiers via Analysis API
* KT-86872 KtOperationReferenceExpression should be KtResolvableCall
* KT-85800 Analysis API: The internal utility PrettyPrinter is used in the public API surface
* KT-73796 Consider "KaAnnotation#useSiteTarget" removal
* KT-84184 [Analysis API] Provide a unification substitutor API
Backend. Wasm
* KT-86242 K/Wasm: deprecate and prohibit using wasmExports
* KT-87639 [Wasm] Multimodule wasm fails on Pointer usages
* KT-86245 K/Wasm: provide an API to get a reference to wasm memory
* KT-76207 K/Wasm: prototype generating suspend functions with stack-switching proposal
* KT-73452 K/Wasm: turning on range checks by default
* KT-83159 K/Wasm: generate one common base class fun interfaces (including Function*)
* KT-83356 K/Wasm: Difference in behavior on nested class initialization (for enums?)
* KT-84267 K/Wasm: init order of companion objects is different from JVM
* KT-86192 K/Wasm: Raise a warning on usage of top-level require in JsFun
* KT-86822 K/Wasm: don't cast the result of calling callable references with Unit return type
Compiler
New Features
* KT-85925 Native: rework virtual trampolines machinery
* KT-80373 Add initial support for release compiler caches
* KT-86018 Short-form of name-based destructuring for multi-field value classes
* KT-86406 Swift Export: support supercalls for cross-language inheritance
* KT-77616 Native: consider adding an annotation that enforces thread state switching for a @SymbolName external fun`
* KT-86410 [KMP] Implement acceptance of JVM IC metadata from previous compilation
Performance Improvements
* KT-85621 Native: fix optimization in CastsOptimization
Fixes
* KT-86525 JvmExposeBoxed: Inconsistent number of parameters during reflection
* KT-87606 Compiler crash on red code with redeclaration of type parameter which is used as expression
* KT-87335 Context parameters: wrong LINENUMBER emitted for context argument loads in JVM bytecode
* KT-87245 Report UnsupportedFeature on ExplicitContextArgument
* KT-87577 Compiler crash on red code with ambiguous type parameter used as expression
* KT-72706 Confusing "INVISIBLE_REFERENCE" when calling private constructor
* KT-86957 Warning on the underscore variable is not reported for java.lang.Void call
* KT-87261 K/N debug: 'is' check miscompilation โ local variable reports wrong type when two smart-cast extractions precede an inline loop
* KT-87507 False-positive ABSTRACT_CLASS_MEMBER_NOT_IMPLEMENTED on fake-override with value parameter of type missing in dependencies
* KT-87439 Postpone UnitConversionsOnArbitraryExpressions indefinetely
* KT-87434 JAVA_CLASS_ON_COMPANION not reported when companion accessed through typealias
* KT-64622 [K/N] ar utility fails with symbol @ in module/klib name on Linux with static cache
* KT-84037 Native: rework ar invocations in the compiler
* KT-87339 JVM: Support recursive type provided as an argument of typeOf
* KT-86551 Check suspicious when over ConeKotlinType in FirExposedVisibilityDeclarationChecker#findVisibilityExposure
* KT-87395 StackOverflowError in return value checker when a Java class member is annotated with the class's own nested annotation
* KT-87290 Investigate possible bug in value class deserialization
* KT-61141 K/N: irText tests failed with K/N irText first run
* KT-85764 Native: Prohibit compiling sources in 'kotlin' package by default
* KT-86469 Check 'when's over 'ConeKotlinType' which could miss some branches in DFA
* KT-87253 Missed ConeCapturedType check in processing of equals contracts
* KT-84522 Refactor FirResolvedQualifier
* KT-84299 resolvedToCompanionObject is not set in some situations
* KT-87327 JVM IR: NullPointerException in JvmInlineClassLowering when using == between value of generic value class and another value class
* KT-86959 Native: OptimizeCasts gets confused by "complex" terms leaking between different loop iterations
* [KT-86949](https://yo...
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Assets 27
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Kotlin 2.4.10
Kotlin 2.4.10 Latest
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KotlinBuild released this 14 Jul 10:47
v2.4.10
5687445
Changelog
Backend. Wasm
* KT-87066 K/Wasm: Not all files are presented in compiler output directory with multimodule-closed-world and incremental compilation
Compiler
* KT-86939 JVM: IllegalStateException "No value for annotation parameter" when using const val in nested Java annotation array argument
* KT-83766 K2: Wrong sourcePsi is set for SymbolPsiLiteral in SLC for annotation arguments referencing a const val
* KT-86728 Reified type inference: expected type not propagated into inline call inside lambda with elvis operator
Compose Compiler
* b/522127447 Compose Compiler 2.4: classes previously inferred stable now reported runtime/Uncertain
Klibs
* KT-86501 Native: IrTypeAliasSymbolImpl is already bound. Signature: kotlinx.datetime/Instant|null[0] on iosSimulatorArm64
Tools. CLI
* KT-86930 Introduce kotlinr in the Kotlin distribution
Tools. Gradle. BCV
* KT-87223 Gradle, BCV: open version range in kotlinAbiValidationCompatClasspath causes kotlin-build-tools-impl to resolve to 2.4.20-Beta1 instead of 2.4.0
Tools. Gradle. JS
* KT-87304 jsBrowserTest fails with "exited with errors (exit code: 1)"
* KT-86057 kotlinUpgradeYarnLock skips lock file regeneration when kotlinNpmInstall is up-to-date, causing kotlinStoreYarnLock to fail
Tools. Gradle. Multiplatform
* KT-87084 False positive warning for JS and Wasm compilations when CRI is enabled
Tools. Scripts
* KT-87076 @file:CompilerOptions("-jvm-target", ...) ignored in .main.kts scripts in Kotlin 2.4.0, falling back to JVM target 1.8
* KT-86352 K2 scripting: FirResolvedTypeRef exception when resolving extension functions from imported scripts
Assets 18
* kotlin-compiler-2.4.10.spdx.json
sha256:d4e83aed809e1b0c321ae26a912d5b72d14b26ebfd4ea4b0ecf49783e5161940
151 KB 2026-07-14T10:34:31Z
* kotlin-compiler-2.4.10.zip
sha256:473dd66c7a3ef4b182065b3da670466c1bf2773a9dbb0ed8b33a39fe9d4f876d
83 MB 2026-07-14T10:34:26Z
* kotlin-compiler-2.4.10.zip.sha256
sha256:3aeacee3b0b6d1e4993c24b1f7be10b1ed22999224251f3da939c83c0c403a58
64 Bytes 2026-07-14T10:34:30Z
* kotlin-native-prebuilt-linux-x86_64-2.4.10.spdx.json
sha256:26c716f4eadcfcaf5037495d918a102cdd68f29d4d381cfc353d54f5c3c03881
426 Bytes 2026-07-14T10:34:43Z
* kotlin-native-prebuilt-linux-x86_64-2.4.10.tar.gz
sha256:c9e356e8518144f275f1514cfe38b07db949f93e47e054832b8974fff1fd33e0
207 MB 2026-07-14T10:34:32Z
* kotlin-native-prebuilt-linux-x86_64-2.4.10.tar.gz.sha256
sha256:10b54a60126673d14ad6b38c7f8b812b2536eb8263c29443f6647092136c576b
64 Bytes 2026-07-14T10:34:42Z
* kotlin-native-prebuilt-macos-aarch64-2.4.10.spdx.json
sha256:1f1f3ba6335f2a07a29fb656e8edd18783bca5bf6be0d0f76c1bd171507f54c1
426 Bytes 2026-07-14T10:34:55Z
* kotlin-native-prebuilt-macos-aarch64-2.4.10.tar.gz
sha256:55ded039bb56a69aec9df354a92b42df9e916104e3c53d8d9852d9cc6617ed9d
247 MB 2026-07-14T10:34:44Z
* kotlin-native-prebuilt-macos-aarch64-2.4.10.tar.gz.sha256
sha256:3b204521f5089b3e88da90c94a0f0c1cbba2d240cf5546a478e526d2a5b723b3
64 Bytes 2026-07-14T10:34:54Z
* kotlin-native-prebuilt-macos-x86_64-2.4.10.spdx.json
sha256:dd94c37e34e6879af243b84e862c9d323b9844d4d62d8d9a664afc911eedbf86
426 Bytes 2026-07-14T10:35:09Z
* Source code (zip)
2026-07-06T11:15:34Z
* Source code (tar.gz)
2026-07-06T11:15:34Z
* Show all 18 assets Loading
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Kotlin 2.4.10-RC2
Kotlin 2.4.10-RC2 Pre-release
Pre-release
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KotlinBuild released this 07 Jul 12:46
v2.4.10-RC2
5687445
Changelog
Backend. Wasm
* KT-87066 K/Wasm: Not all files are presented in compiler output directory with multimodule-closed-world and incremental compilation
Tools. Gradle. BCV
* KT-87223 Gradle, BCV: open version range in kotlinAbiValidationCompatClasspath causes kotlin-build-tools-impl to resolve to 2.4.20-Beta1 instead of 2.4.0
Tools. Gradle. JS
* KT-87304 jsBrowserTest fails with "exited with errors (exit code: 1)"
Assets 18
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Kotlin 2.4.10-RC
Kotlin 2.4.10-RC Pre-release
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KotlinBuild released this 25 Jun 09:46
v2.4.10-RC
bc04b90
Changelog
Compiler
* KT-86939 JVM: IllegalStateException "No value for annotation parameter" when using const val in nested Java annotation array argument
* KT-83766 K2: Wrong sourcePsi is set for SymbolPsiLiteral in SLC for annotation arguments referencing a const val
* KT-86728 Reified type inference: expected type not propagated into inline call inside lambda with elvis operator
Compose compiler
* b/522127447 Fixed a bug that was making the stability of pre-cast types be used in certain skipping checks instead of the stability of post-cast types
Klibs
* KT-86501 Native: IrTypeAliasSymbolImpl is already bound. Signature: kotlinx.datetime/Instant|null[0] on iosSimulatorArm64
Tools. CLI
* KT-86930 Introduce kotlinr in the Kotlin distribution
Tools. Gradle. JS
* KT-86057 kotlinUpgradeYarnLock skips lock file regeneration when kotlinNpmInstall is up-to-date, causing kotlinStoreYarnLock to fail
Tools. Gradle. Multiplatform
* KT-87084 False positive warning for JS and Wasm compilations when CRI is enabled
Tools. Scripts
* KT-87076 @file:CompilerOptions("-jvm-target", ...) ignored in .main.kts scripts in Kotlin 2.4.0, falling back to JVM target 1.8
* KT-86352 K2 scripting: FirResolvedTypeRef exception when resolving extension functions from imported scripts
Assets 18
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Kotlin 2.4.20-Beta1
Kotlin 2.4.20-Beta1 Pre-release
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KotlinBuild released this 24 Jun 13:16
v2.4.20-Beta1
adf5829
Changelog
Analysis API
* KT-85418 Implement an API for accessing deserialized file annotations in Analysis API
* KT-74448 K2. False positive MISSING_DEPENDENCY_SUPERCLASS in LinkedListTest.kt, kotlinx.coroutines
* KT-85856 containingSymbol of constructor property differs for local and non-local classes
Analysis API. Code Compilation
* KT-76457 K2 IDE / KMP Debugger: KISEWA โCannot compile a common source without a JVM counterpartโ on evaluating inline fun from common module inside jvm
Analysis API. FIR
* KT-70552 No expects for actual
* KT-86014 Types are broken after remove parameter through change signature
* KT-86363 KotlinIllegalArgumentExceptionWithAttachments: No dangling modifier found on companion blocks
* KT-86147 Drop kotlin.parallel.resolve.under.global.lock registry key
* KT-85543 Avoid lazy resolve for the contracts phase if no constracts might be resolved
Analysis API. Infrastructure
* KT-86186 Analysis API: Codebase tests run twice in some analysis modules โ pick a single JUnit runner and migrate
* KT-85360 Drop kotlin-compiler-testdata-for-ide artifact
* KT-85585 Simplify the dependencies graph for the Analysis API modules
* KT-85381 Remove tests for the FE10 implementation
Analysis API. Light Classes
New Features
* KT-84645 Support resolving to companion block members & extensions from Java (light classes)
* KT-80775 Support PsiClass#getRecordComponents in light classes
Fixes
* KT-57537 SLC: propagate default parameter value from (@JvmOverloads) expect declarations to actual declarations
* KT-63568 Symbol Light Classes: KtAnnotationApplicationWithArgumentsInfo.normalizedArguments() may work incorrectly when psi is not set
* KT-70428 AA: good code is red when a Java class extends a Kotlin class implementing MutableList by delegation
* KT-36740 MPP: False-positive incompatible types in .java when using expect-class returned by non-expect member from common when actual is actual typealias
* KT-67749 Analysis API: Symbol Light classes should be available only to pure JVM sources
* KT-85040 [Analysis API] Improve Java / Kotlin interop in KMP projects
* KT-68169 K2 IDE. KMP. False positive type mismatch in java file of jvm source-set when using common declaration which expects String
* KT-37783 KMP Java Interop: JVM-only methods on actual superclass not resolved in Java for common subclass
* KT-40059 Provide type correction for expect/actual types used from Java-code
* KT-71429 MPP: False positive "Function1 is not a functional interface" when calling code from Common in Java
* KT-70426 SLC: kotlin.Collection#size is not exposed by default
* KT-60480 Symbol Light Classes: Classes implementing kotlin.collections.* interfaces don't implement all methods from the corresponding java.util.* interfaces
* KT-36991 IDE: "both methods have same erasure" for Java classes directly or indirectly extending Kotlin collections
* KT-22594 KotlinCollection.getSize is not highlighted as an error in Java
Analysis API. PSI
* KT-85052 Move mutation methods out of the Kotlin PSI
* KT-84925 Move KtReference to the Kotlin IntelliJ plugin
* KT-85427 Use factory-like pattern instead of reflection in KtNodeType
* KT-84789 Ensure all KtClassBody.parent usages are correct
* KT-85154 PSI: "AE: parent is ERROR_ELEMENT" with top-level destructuring declaration
Analysis API. Providers and Caches
* KT-82220 Analysis API: Support platform-specific session components and checkers in metadata sessions
* KT-82731 Analysis API: Limit granular tree change processing to a few files
Analysis API. Standalone
* KT-85112 AA does not see packages from unpacked klibs
* KT-86417 Support parameters in 'getExpectsForActual()'
* KT-84916 Metadata stub deserializers aren't properly set up for Analysis API Standalone
* KT-83191 Analysis API: JvmDependenciesIndexImpl performs very poorly for large classpaths
Analysis API. Stubs and Decompilation
* KT-86520 KotlinDeclarationInCompiledFileSearcher doesn't support visibility-mangled declarations
* KT-64901 Inconsistency between AST and Stub tree in the case of non-local destructuring declarations
* KT-84444 Support stubs for companion blocks & extensions
Analysis API. Surface
New Features
* KT-73214 Add KaScope#declarations with name filter
* KT-69085 Provide API to retrieve label/name from KtFunctionLikeSymbol
* KT-70771 KaLocalVariableSymbol: support isDelegatedProperty
* KT-85239 Streaming version of collectDiagnostics()
* KT-85037 Add API for KaFunctionType's returnType modification
* KT-80460 AA: Introduce KtExpression.isStableForSmartCasting API
* KT-82519 Automatically recognize the appropriate analysis mode for in-memory file copies based on their content
* KT-65912 Analysis API: Implement type building API for all KtType
Fixes
* KT-66039 K2: Analysis API: redesign resolution API
* KT-70794 K2 IDE: Reference to object does not resolve as LHS in "plusAssign" assignment expression
* KT-70774 Unary operators on literals are not resolvable
* KT-86757 Flaky annotations result for @all annotation on a backing field
* KT-85382 Remove the FE10 implementation
* KT-86681 [Analysis API] Move isDelegated to KaVariableSymbol
* KT-86685 collectCallCandidates works incorrectly for a constructor vs. a companion invoke
* KT-86514 No expected type within collection literal in annotation entry using array rather than varargs
* KT-76076 K2 AA: safe call expression navigates to parent array index access expression
* KT-86418 Support property accessors in 'getExpectsForActual()'
* KT-71312 KaFirPsiJavaClassSymbol.{hasAnnotations, annotationSimpleNames} is inconsistent with FirJavaClass implementation
* KT-86394 Resolve from KDoc reference is inconsistent with source code
* KT-86248 isUsedAsExpression true for typealias lhs in ::
* KT-85778 Analysis API: Ensure that all public endpoints in implementation modules are internal or opt-in
* KT-78285 resolveToCallCandidates inconsistent behaviour with invoke operator and constructor
* KT-85852 CCE in buildClassType
* KT-85989 Super type references should be aware of type alias constructors
* KT-84184 [Analysis API] Provide a unification substitutor API
* KT-84584 Support companion extensions and blocks in the Analysis API
* [KT-84932](https://yo...
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Kotlin 2.4.0
Kotlin 2.4.0
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KotlinBuild released this 03 Jun 09:31
v2.4.0
add726c
Changelog
Analysis API
* KT-83867 OVERLOAD_RESOLUTION_AMBIGUITY false positive with assertEquals in IJ repo
* KT-83723 [Analysis API] Enable experimental KDoc resolver by default
* KT-83388 Analysis API: properly support KMP in KotlinPackageProvider
* KT-65683 Analysis API: Dangling file session creation causes a computeIfAbsent contract violation
Analysis API. Code Compilation
* KT-78946 Evaluation of variable with local class in type parameter leads to InventNamesForLocalClasses exception
Analysis API. FIR
* KT-68260 K2 AA: InvalidFirElementTypeException โFor CALLABLE_REFERENCE_EXPRESSION with text ::lam1, unexpected element of type: no element foundโ with illegal callable reference call
* KT-70896 AA: False positive deprecation warning with override of built-in method in JDK mapped class
* KT-84711 K2 IDE sometimes loses FIR plugin-generated declarations after file changes
* KT-84625 Analysis API: collectDesignationPath fails for nested classes inside plugin-generated top-level classes
* KT-84596 Improve K2 Jooq completion performance
* KT-84525 KaValueParameterSymbol#getHasSynthesizedName returns false for FirDeclarationOrigin.SubstitutionOverride.DeclarationSite
* KT-83546 Kotlin analysis reach ClsCustomNavigationPolicy
* KT-84259 Move CommonDefaultImportsProvider to the frontend independent module
* KT-82945 Analysis API: KotlinIllegalArgumentExceptionWithAttachments: Expected FirResolvedTypeRef with ConeKotlinType but was FirUserTypeRefImpl
* KT-71135 AA: exception from sealed inheritors checker when analyzeCopy
Analysis API. Infrastructure
Fixes
* KT-83905 Analysis API: Improve UX with test data
* KT-84913 Extract compiler classes used by the PSI & Analysis API to a separate module
* KT-64986 Analysis API: Implement Analysis API tests for different KMP Platforms
* KT-84776 The test data manager misses the redundancy check in the update mode
* KT-84962 The test data manager misses -ea flag
* KT-84388 Preserve the EOF status in the test data manager to avoid extra changes
* KT-84362 Analysis API tests produce many warnings due to "not yet loaded registry"
* KT-84279 Test Data Manager fails on a clean build
* KT-83913 Exclude compiler-based Analysis API tests from Git tracking
* KT-80379 Extract per-module test generators for AA tests
* KT-84120 Move CLI modules out of kotlin-compiler-fe10-for-ide
* KT-83200 Track external dependencies of the Analysis API modules
Analysis API. Light Classes
* KT-82434 Light classes should prefer enum entries to properties
* KT-84200 SLC: return type is not boxed for delegated methods with generic original method
* KT-72451 "CCE: class PsiPrimitiveType cannot be cast to class PsiClassType" with same-named enum class and typealias
Analysis API. PSI
* KT-84715 removeModifier doesn't delete whitespaces around the removed modifier
* KT-84564 KtEnumEntry.delete deletes semicolon
* KT-84781 Use computed properties in KotlinElementTypeProviderImpl
* KT-83846 Set up guidelines for PSI
* KT-84135 Deprecate KtSelfType
Analysis API. Providers and Caches
* KT-82731 Analysis API: Limit granular tree change processing to a few files
* KT-79234 Analysis API: Usage of asMap() on Caffeine caches bypasses stats counters
* KT-74090 Analysis API: Support dumb mode (restricted analysis)
Analysis API. Standalone
* KT-83801 Nested typealiases are not correctly indexed in standalone mode
Analysis API. Stubs and Decompilation
* KT-85371 StackOverflowError from LLKotlinStubBasedLibrarySymbolProvider and StubBasedClassDeserialization
* KT-83935 Support KDoc loading in decompiled stubs
Analysis API. Surface
New Features
* KT-85239 Streaming version of collectDiagnostics()
* KT-82519 Automatically recognize the appropriate analysis mode for in-memory file copies based on their content
* KT-73534 SAM method API
* KT-82993 Support explicit backing fields in the Analysis API
Fixes
* KT-79186 KtCompletionExtensionCandidateChecker does not work for extensions when using callable references of a type
* KT-83759 Analysis API: Mark platform interface APIs with @KaPlatformInterface
* KT-83921 Extend KaKDocProvider to read Kdoc from KLIB metadata
* KT-77426 KaFirCompilerFacility uses an arbitrary JVM counterpart for common sources
* KT-84737 KaCallableSymbol#directlyOverriddenSymbols doesn't work for java overrides of kotlin properties
* KT-84621 Migrate symbol tests to ManagedTest properly
* KT-80575 KaFirJavaInteroperabilityComponent#getJavaGetterName should not throw exception on incomplete code
* KT-84397 KtDefaultAnnotationArgumentReference should return only results with value name
* KT-84804 buildSubstitutor does not work correctly with Java type parameters
* KT-84389 Cover references with ABI and documentation checks
* KT-57042 K2, Analysis API: KaJavaInteroperabilityComponent#callableSymbol returns null for a Java getter implementing Kotlin property
* KT-80856 Analysis API: analysisContextModule incorrectly determines the module of an original file when used for dangling file context assignment
* KT-84363 AA, isUsedAsExpression: Unhandled Non-KtExpression parent of KtExpression: class org.jetbrains.kotlin.psi.KtContractEffect
* KT-70476 Analysis API: "KtDefaultAnnotationArgumentReference.resolveToSymbols" does not work in FIR implementation
* KT-68499 Split KtDefaultAnnotationArgumentReference on K1 and K2 implementation
* KT-70521 Analysis API: Impossible to distinguish between 'iterator' operator calls dispatched with imports from objects
* KT-77669 Context arguments are missed on implicit invoke calls
* KT-77670 resolveToCall: extensionReceiver is incorrectly chosed due to a conflict with context parameters for an implicit invoke call
* KT-68633 K2 AA: IAE "Expected class KaClassSymbol instead of class KaFirEnumEntrySymbol" with enum entry initializer
* KT-83777 Analysis API: The resolution scope of a context module accepts elements from associated dangling files
* KT-82571 No expected type for overridden property without explicit type
* KT-83223 Support "Explicit context arguments" in the Analysis API
* KT-65186 K2: Analysis API: KtExpressionTypeProvider.getExpectedType works incorrectly for the right hand side of assignment expressions
* KT-76011 KaFirNamedClassSymbol#companionObject doesn't provide generated objects generated by compiled plu...
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Assets 18
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Kotlin 2.4.0-RC2
Kotlin 2.4.0-RC2 Pre-release
Pre-release
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KotlinBuild released this 27 May 12:43
v2.4.0-RC2
add726c
Changelog
Backend. J2KLIB
* KT-86367 [JKLIB] kotlin.Cloneable built-in class not found
Compose compiler
* b/511102714 Made the default stability of non-final classes Unknown
instead of Stable
Tools. Build Tools API
* KT-86395 [BTA] forward-compatibility violation: NoSuchMethodError on JvmSnapshotBasedIncrementalCompilationConfiguration. breaks IC
Tools. Gradle
* KT-86346 Compiler warnings printed twice in console โ once as w: and again as Gradle "Problem found:" block
Tools. Gradle. BCV
* KT-86268 ABI validation tasks fail with Unsupported platform toolchain type when using kotlin.compilerVersion pointing to an older compiler after BTA migration in 2.4.0-Beta2
Tools. Gradle. Wasm
* KT-86457 [Wasm, Gradle] BinaryenExec.standardOutput is silently ignored after migration to Gradle Workers
Assets 18
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Kotlin 2.4.0-RC
Kotlin 2.4.0-RC Pre-release
Pre-release
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KotlinBuild released this 13 May 12:30
v2.4.0-RC
5fbe6f8
Changelog
Backend. J2KLIB
* KT-84877 [J2KLIB] Remove withKotlinBuiltinsHack present in JKlibIrLinker.kt
* KT-85846 Tests failing with fake override property missing accessors or backing field
* KT-85717 IllegalStateException due to already bound symbol
* KT-86204 [JKlib] Propagate private members from dependecies in the IR tree
Compiler
* KT-86210 Update -Xannotation-default-target CLI parameter doc
* KT-85948 Contracts in 2.4 stdlib is not compatible with 2.3 compiler
* KT-85957 Contract on function is getting discarded if any of effect declarations is unknown
* KT-86130 False positive UNINITIALIZED_ENUM_COMPANION on LV 2.3 and lower
* KT-84860 False positive UNINITIALIZED_ENUM_COMPANION in enum access with explicit receiver in enum initializer when enum class has a companion
* KT-84319 Add JVM target bytecode version 26
* KT-85825 Context parameter lambda loses context type when wrapped in nested run blocks
* KT-84960 Property contract leaks unsubstituted type parameter in smart cast
Compose compiler
* b/509945632 Do not generate groups in inline lambdas without @Composable calls
IR. Interpreter
* KT-86083 Create a new CLI flag to enable IntrinsicConstEvaluation feature
JVM. Reflection
* KT-86017 KClass.constructors returns all java.lang.String constructors for mapped type kotlin.String
* KT-85999 Reflection: ByteArray KType incorrectly has type arguments in Kotlin 2.4.0
Libraries
* KT-86027 Hide returnsResultOf under a separate flag and remove its usages from kotlin stdlib
Native
* KT-84733 LLVM Update: rebase LLVM once the upstream stabilizes
Tools. Compiler Plugin API
* KT-85969 KtLint incompatible with Kotlin 2.4.0-Beta2 (parsing errors / Extensions storage issue)
Tools. Compiler Plugins
* KT-86170 PowerAssert: Stabilize runtime ABI for initial release
* KT-85250 PowerAssert: Automatically add runtime library dependency
Tools. Compiler plugins. Serialization
* KT-85554 Serialization: "IndexOutOfBoundsException" on property generated by Compose plugin
* KT-85963 IncompatibleClassChangeError: Expected non-static field $stable on deserialization of @Serializable data class when Compose compiler plugin is applied before Serialization plugin
Tools. Gradle
* KT-85373 Compile against Gradle API 9.5.0
* KT-85374 Run tests against Gradle 9.5.0
Tools. Gradle. Multiplatform
* KT-85877 The number of SPM direct dependencies is multiplied on number on targets
* KT-85706 SwiftPM Import: Updating package version in build script updates version in the lock file
* KT-83370 Incorrect metadata transformation for stdlib's webMain source set
Tools. Gradle. Native
* KT-85984 linkReleaseFrameworkIosSimulatorArm64 is executed during Debug iOS build since 2.4.0-Beta2
* KT-86024 Empty main compilations cause w: [COMPILER_ARGUMENTS_WARNING] There are libraries in -friend-modules CLI argument that are not included in -library CLI argument:
Tools. Gradle. Wasm
* KT-85974 K/Wasm: Do not set -Xir-per-module for Wasm tasks
Assets 18
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Kotlin 2.4.0-Beta2
Kotlin 2.4.0-Beta2 Pre-release
Pre-release
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KotlinBuild released this 22 Apr 09:52
v2.4.0-Beta2
271a4ce
Changelog
Analysis API
* KT-65683 Analysis API: Dangling file session creation causes a computeIfAbsent contract violation
Analysis API. FIR
* KT-70896 AA: False positive deprecation warning with override of built-in method in JDK mapped class
* KT-84625 Analysis API: collectDesignationPath fails for nested classes inside plugin-generated top-level classes
Analysis API. Infrastructure
* KT-84913 Extract compiler classes used by the PSI & Analysis API to a separate module
* KT-64986 Analysis API: Implement Analysis API tests for different KMP Platforms
* KT-80379 Extract per-module test generators for AA tests
Analysis API. PSI
* KT-84715 removeModifier doesn't delete whitespaces around the removed modifier
* KT-84564 KtEnumEntry.delete deletes semicolon
* KT-84781 Use computed properties in KotlinElementTypeProviderImpl
Analysis API. Stubs and Decompilation
* KT-85371 StackOverflowError from LLKotlinStubBasedLibrarySymbolProvider and StubBasedClassDeserialization
* KT-83935 Support KDoc loading in decompiled stubs
Analysis API. Surface
* KT-82519 Automatically recognize the appropriate analysis mode for in-memory file copies based on their content
* KT-85239 Streaming version of collectDiagnostics()
* KT-83921 Extend KaKDocProvider to read Kdoc from KLIB metadata
* KT-77426 KaFirCompilerFacility uses an arbitrary JVM counterpart for common sources
* KT-84737 KaCallableSymbol#directlyOverriddenSymbols doesn't work for java overrides of kotlin properties
* KT-84621 Migrate symbol tests to ManagedTest properly
* KT-80575 KaFirJavaInteroperabilityComponent#getJavaGetterName should not throw exception on incomplete code
Backend. Wasm
* KT-76205 K/Wasm: stabilize and turn on incremental compilation by default
* KT-83728 [Wasm] Invalid Ir type while suspend call with blocked if null comprehansion
* KT-81637 K/JS/Wasm interop: Inconsistent behavior of is/as operations for JsReference<C> and C
Compiler
New Features
* KT-84484 Companion Extensions Analysis & Resolution
* KT-84298 K2: Generate IR for Companion Blocks & Extensions
* KT-84292 Enforce Companion Blocks & Extensions Language Feature during Resolution
* KT-84291 Companion Blocks & Extensions Checkers
* KT-84290 Callable References to Companion Block Declarations & Extensions
* KT-84287 Build Raw FIR for Companion Blocks & Extensions
* KT-73256 Implement all meta-target for annotations
* KT-84319 Add JVM target bytecode version 26
* KT-84297 Serialize & Deserialize Companion Block Declarations & Extensions to/from Metadata
* KT-84199 Implement DontMakeExplicitNullableJavaTypeArgumentsFlexible feature
Fixes
* KT-80489 Collection literals: experimental version (Frontend)
* KT-84566 Prevent launching Default dispatcher threads from IJ SDK in kotlin compiler
* KT-85358 Native: roll back the workaround for KT-84678 once MapLibre has been properly fixed
* KT-84931 Incorrect type nullability in SAM super type in anonymous class-based SAM conversion
* KT-83920 False positive "modifier 'value' is not applicable to 'local variable'" with soft keyword in positional destructuring (square bracket) declaration
* KT-85626 @JvmRecord in commonMain breaks compileCommonMainKotlinMetadata with "Cannot access 'java.lang.Record'"
* KT-52673 Don't report deprecation warning/error on imports
* KT-84991 Improve Argument type mismatch diagnostics
* KT-82216 Sanitize '.kotlin_module' filename
* KT-84678 K/N: Undefined symbol from SPM-added ObjC frameworks when linking iOS target
* KT-77726 Move FirUnusedExpressionChecker to the default checkers list
* KT-85354 checkPsiTypeConsistency: add psi text attachments
* KT-85479 Improve diagnostic messages for upper bound violations
* KT-84585 Upper bound violated warning for expansion of type alias in LHS
* KT-84924 Native: stdlib-cache.lock used by mulitple processes
* KT-85244 False positive DUPLICATE_BRANCH_CONDITION_IN_WHEN with guard condition
* KT-78432 No-arg constructor should be generated for regular classes with a value class parameter in case of JvmExposeBoxed
* KT-85487 Investigate why WrapContinuationForTailCallFunctions does not work in Android Test
* KT-59633 K2: Implement running AndroidRunner tests with FIR
* KT-85392 Native: concurrency issues in per-file caches
* KT-76237 Store File-level annotations in KLIB metadata separately
* KT-85162 Introduce diagnostics to refine numeric types casting
* KT-80060 False positive REDUNDANT_CALL_OF_CONVERSION_METHOD in case of overloads
* KT-85289 False-positive smartcast from == with type parameter based variable
* KT-83890 return-value-checker: false positive "Unused return value of 'context'" on kotlin.context() functions
* KT-84106 False negative "NON_EXHAUSTIVE_WHEN": "NoWhenBranchMatchedException" at runtime with sealed and platform type
* KT-85005 Consider all: target in the checker of repeatable annotations
* KT-85210 Enabling -XXLanguage:+IntrinsicConstEvaluation breaks highlighting on some broken code
* KT-85217 Rework implementation supporting simple-to-suspend function conversion
* KT-85036 Introduce a proper handling of optional expectation annotations in platform checkers during metadata compilation
* KT-85086 False-negative JVM_EXPOSE_BOXED_CANNOT_BE_THE_SAME
* KT-84082 [OPT_IN_USAGE_ERROR] duplicates for destructuring declaration
* KT-84732 Collection literals: "Expected FirCollectionLiteralImpl to be resolved" in RHS of equality operator
* KT-84841 Collection literals: Drop special treatment of when with expected type
* KT-85007 Properly implement special rules for kotlin.Result in @JvmExposeBoxed support
* KT-74383 Support new callable reference nodes in JVM backend
* KT-84828 Cleanup JVM backend from the old callable references-related code
* KT-85006 Refine error messages for INAPPLICABLE_ALL_TARGET diagnostic
* KT-84296 Support Companion Blocks in CFG
* KT-85058 Remove final field modification in DescriptorRendererOptionsImpl to prevent warnings on JDK 26+
* KT-85021 False positive SUBCLASS_CANT_CALL_COMPANION_PROTECTED_NON_STATIC error in multi-module project
* KT-84727 [K/N] Segfault when returning null as generic Int typ...
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Kotlin 2.3.21
Kotlin 2.3.21
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KotlinBuild released this 23 Apr 10:11
v2.3.21
fea1ad8
Changelog
Backend. Wasm
* KT-84610 [Wasm] Failed to compile klibs in IC mode
Compiler
* KT-84566 Prevent launching Default dispatcher threads from IJ SDK in kotlin compiler
* KT-85358 Native: roll back the workaround for KT-84678 once MapLibre has been properly fixed
* KT-85626 @JvmRecord in commonMain breaks compileCommonMainKotlinMetadata with "Cannot access 'java.lang.Record'"
* KT-85405 Postpone/Revert DontIgnoreUpperBoundViolatedOnImplicitArguments
* KT-84678 K/N: Undefined symbol from SPM-added ObjC frameworks when linking iOS target
* KT-85021 False positive SUBCLASS_CANT_CALL_COMPANION_PROTECTED_NON_STATIC error in multi-module project
JavaScript
* KT-82395 Support top-level declarations from compiler plugins in JS incremental compilation
* KT-84475 K/JS: false-positive exportability warnings in multi-module project
* KT-84633 Kotlin/JS: "Serializer for class not found" error when IR output granularity is whole-program
* KT-85047 Kotlin/JS: @JsStatic on suspend fun of class companion generates incorrect d.ts
* KT-84517 K/JS: bad mappings data in outputted Kotlin stdlib source map
Libraries
* KT-71848 Kotlinx.metadata: Add CompilerPluginData into Km API
Native. C and ObjC Import
* KT-85399 Kotlin/Native: TypeCastException when casting ObjC Protocol MetaClass with genericSafeCasts enabled
* KT-85508 K/N: TypeCastException when using nw_parameters_create_secure_tcp block parameter on 2.3.20
Tools. Gradle
* KT-84729 Update Gradle plugin-publish version to enable configuration cache badge on Gradle plugins portal
Tools. Gradle. Compiler plugins
* KT-85257 AGP/Compose: MergeMappingFileTask clears R8 artifacts due to @OutputDirectory annotation on AGP 9.1+
Tools. Scripts
* KT-85105 Scripts: JVM backend internal error (IR lowering) when scratch file contains anonymous object
* KT-85103 Exception while generating code when explain destructuring decls
* KT-84842 scriptCompilationClasspathFromContext behavior changed from 2.3.10 to 2.3.20
* KT-85029 Kotlin Scripting: ScriptDiagnostic reports "at null" instead of error location
Tools. Statistics (FUS)
* KT-85628 KGP: composite build FUS metrics fail on access of 'configurationTimeMetrics'
Assets 18
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