Compiler

• KT-20356 Internal compiler error - This method shouldn't be invoked for INVISIBLE_FAKE visibility
• KT-23153 Compiler allows to set non constant value as annotation parameter

IDE

• KT-20056 TCE on creating object of an anonymous class in Kotlin script
• KT-23844 Kotlin property accessor searcher consumes CPU when invoked on a scope consisting only of Java files
• KT-24943 Project leak via LibraryEffectiveKindProviderImpl
• KT-25092 SourcePsi should be physical leaf element but got OPERATION_REFERENCE
• KT-25255 Preferences | Languages & Frameworks | Kotlin Updates: show currently installed version

IDE. Inspections and Intentions

• KT-15666 Unused symbol: delete header & its implementations together
• KT-20523 Don't mark as unused functions with @kotlin.test.* annotations and classes with such members
• KT-23105 Create actual implementation shouldn't generate default parameter values
• KT-23326 "Add missing actual members" quick fix fails with AE at KtPsiFactory.createDeclaration() with wrong expect code
• KT-23686 "Add missing actual members" should not add primary actual constructor if it's present as secondary one
• KT-23762 Add missing actual members quick fix adds actual declaration for val/var again if it was in the primary constructor

IDE. Navigation

• KT-11477 Kotlin searchers consume CPU in a project without any Kotlin files
• KT-17512 Finding usages of actual declarations in common modules

IDE. Refactorings

• KT-15351 Extract Superclass/Interface: existent target file name is rejected; TCE: "null cannot be cast to non-null type org.jetbrains.kotlin.psi.KtFile" at ExtractSuperRefactoring.createClass()
• KT-16281 Extract Interface: private member with Make Abstract = Yes produces incompilable code
• KT-16284 Extract Interface/Superclass: reference to private member turns incompilable, when referring element is made abstract
• KT-17235 Introduce Parameter leaks listener if refactoring is cancelled while in progress
• KT-17742 Refactor / Rename Java getter to get() does not update Kotlin references
• KT-18555 Refactor / Extract Interface, Superclass: Throwable: "Refactorings should be invoked inside transaction" at RefactoringDialog.show()
• KT-18736 Extract interface: import for property type is omitted
• KT-24968 Type hints disappear after "Copy" refactoring
• KT-24992 The IDE got stuck showing a modal dialog (kotlin refactoring) and doesn’t react to any actions

IDE. Tests Support

• KT-22306 Empty gutter menu for main() and test methods in Kotlin/JS project
• KT-25253 No “run” gutter icons for tests in Kotlin/JS project

Reflection

• KT-16616 KotlinReflectionInternalError: Reflection on built-in Kotlin types is not yet fully supported in getMembersOfStandardJavaClasses.kt
• KT-17542 KotlinReflectionInternalError on ::values of enum class
• KT-20442 ReflectJvmMapping.getJavaConstructor() fails with Call is not yet supported for anonymous class
• KT-21973 Method.kotlinFunction for top level extension function returns null when app is started from test sources
• KT-22048 Reflection explodes when attempting to get constructors of an enum with overridden method

Tools. JPS

• KT-25218 Build fails as Javac doesn't see Kotlin classes

Tools. kapt

• KT-25131 Kapt should not load annotation processors when generating stubs

1.2.51

Backend. JVM

• KT-23943 Wrong autoboxing for non-null inline class inside elvis with null constant
• KT-24952 EnumConstantNotPresentExceptionProxy from Java reflection on annotation class with target TYPE on JVM < 8
• KT-24986 Android project release build with ProGuard enabled crashes with IllegalAccessError: Final field cannot be written to by method

Binary Metadata

• KT-24944 Exception from stubs: "Unknown type parameter with id = 1" (EA-120997)

Reflection

• KT-23962 MalformedParameterizedTypeException when reflecting GeneratedMessageLite.ExtendableMessage

Tools. Gradle

• KT-24956 Kotlin Gradle plugin's inspectClassesForKotlinIC task for the new 1.2.50 release takes incredibly long
• KT-23866 Kapt plugin should pass arguments from compiler argument providers to annotation processors
• KT-24716 1.2.50 emits warning "Classpath entry points to a non-existent location:"
• KT-24832 Inter-project IC does not work when "kotlin-android" project depends on "kotlin" project
• KT-24938 Gradle parallel execution fails on multi-module Gradle Project
• KT-25027 Kapt plugin: Kapt and KaptGenerateStubs tasks have some incorrect inputs

Tools. Scripts

• KT-24926 NoSuchElementException in TemplateAnnotationVisitor when upgrading the Gradle Kotlin DSL to Kotlin 1.2.50

Compiler

• KT-23413 IndexOutOfBoundsException on local delegated properties from provideDelegate if there's at least one non-local delegated property
• KT-23742 Optimise inline class redundant boxing on return from inlined lambda
• KT-24513 High memory usage in Kotlin and 2018.1
• KT-24679 KotlinUCallExpression doesn't resolve callee if it is an inline method
• KT-24808 NI: nested withContext call is reported with Suspension functions can be called only within coroutine body error
• KT-24859 Disallow calls of functions annotated with receiver annotated with @RestrictsSuspension in foreign suspension context

IDE

New Features

• KT-24827 Allow to do an additional check for Kotlin plugin update before an actual install

Performance Improvements

• KT-20924 Slow KtLightAbstractAnnotation.getClsDelegate() lightAnnotations.kt

Fixes

• KT-4311 "Override members" works wrong when function is extension
• KT-13948 IDE plugins: improve description
• KT-17350 Implement members from interface fails when one of the generic types is unresolved
• KT-17668 Edit Configuration dialog doesn't have a button for choosing the "Main class" field
• KT-19102 Wrong equals() and hashCode() code generated for arrays of arrays
• KT-21863 Imported typealias to object declared as "Unused import directive" when only referring to methods
• KT-23272 Git commit not working
• KT-23407 Pasting callable reference from different package suggests imports, but inserts incompilable FQN
• KT-23456 UAST: Enum constant constructor call arguments missing from Kotlin enums
• KT-23942 Fix building light-classes for MPP project containing multi-file facades
• KT-24072 Kotlin SDK appears as many times as there are modules in the project
• KT-24412 Kotlin create project wizard: Kotlin/JS no SDK
• KT-24933 please remove usages of com.intellij.psi.search.searches.DirectClassInheritorsSearch#search(com.intellij.psi.PsiClass, com.intellij.psi.search.SearchScope, boolean, boolean) deprecated long ago
• KT-24958 Escaping goes insane when editing interpolated string in injected fragment editor
• KT-25024 Wrong resolve scope while resolving java.lang.String PsiClassReferenceType

IDE. Android

• KT-23040 Wrong run configuration classpath in a mixed Java/Android project
• KT-24321 Actual implementations from Android platform module are wrongly reported with no corresponding expected declaration in IDE
• KT-25018 Exception Dependencies for org.jetbrains.kotlin.resolve.calls.* cannot be satisfied on a simple project in AS 3.2 Canary

IDE. Code Style, Formatting

• KT-14066 Comments on when branches are misplaced
• KT-25008 Formatter: Use single indent for multiline elvis operator

IDE. Debugger

• KT-23162 Evaluate expression in multiplatform common test fails with JvmName missing when run in JVM
• KT-24903 Descriptors leak from KotlinMethodSmartStepTarget

IDE. Decompiler

• KT-23981 Kotlin bytecode decompiler works in AWT thread

IDE. Gradle

• KT-24614 Gradle can't get published versions until commenting repositories in settings.gradle

IDE. Hints

• KT-22432 Type hints: Don't include ".Companion" in the names of types defined inside companion object
• KT-22653 Lambda return hint is duplicated for increment/decrement expressions
• KT-24828 Double return hints on labeled expressions

IDE. Inspections and Intentions

New Features

• KT-7710 Intention to convert lambda to anonymous function
• KT-11850 Add nested lambdas with implicit parameters warning
• KT-13688 Add 'Change to val' quickfix for delegates without setValue
• KT-13782 Intention (and may be inspection) to convert toString() call to string template
• KT-14779 Inspection to replace String.format with string templates
• KT-18810 Quick-fix for 'is' absence in when
• KT-22871 Add quickfix to move const val into companion object
• KT-23082 Add quick-fix for type variance conflict
• KT-23306 Add intention of putting remaining when-values even in end, and even if there is "else"
• KT-23897 Inspections: report extension functions declared in same class
• KT-24295 Add "Remove 'lateinit'" quickfix
• KT-24509 Inspection "JUnit tests should return Unit"
• KT-24815 Add Quick fix to remove illegal "const" modifier

Fixes

• KT-12298 Fix override signature doesn't remove bogus reciever
• KT-20583 Report "redundant let" even for it in argument position
• KT-21556 "Call chain on collection type may be simplified" generates uncompiled code on IntArray
• KT-22030 Invalid Function can be private inspection
• KT-22041 "Convert lambda to reference" suggested incorrectly
• KT-22089 Explict This inspection false negative with synthetic Java property
• KT-22094 Can be private false positive with function called from lambda inside inline function
• KT-22162 Add indices to loop fails on destructing declarator
• KT-22180 "Can be private" false positive when function is called by inline function inside property initializer
• KT-22371 "Create secondary constructor" quick fix is not suggested for supertype constructor reference
• KT-22758 "Create ..." and "Import" quick fixes are not available on unresolved class name in primary constructor
• KT-23106 Implement methods should respect actual modifier as well
• KT-23452 "Remove unnecessary parentheses" reports parens of returned function
• KT-23697 Android project with 'org.jetbrains.kotlin.platform.android' plugin: all multiplatform IDE features are absent
• KT-23752 False positive "Remove variable" quick fix on property has lambda or anonymous function initializer
• KT-23788 Can't convert long char literal to string if it starts with backslash
• KT-23860 Import quick fix is not available in class constructor containing transitive dependency parameters
• KT-24349 False positive "Call on collection type may be reduced"
• KT-24374 "Class member can have private visibility" inspection reports expect members
• KT-24422 Android Studio erroneously reporting that @Inject lateinit var can be made private
• KT-24423 False inspection warning "redundant type checks for object"
• KT-24425 wrong hint remove redundant Companion
• KT-24537 False positive property can be private on actual properties in a multiplatform project
• [KT-24557](https://youtrack...

1.2.50

Compiler

• KT-23360 Do not serialize annotations with retention SOURCE to metadata
• KT-24278 Hard-code to kotlin compiler annotation for android library migration
• KT-24472 Support argfiles in kotlinc with -Xargfile
• KT-24593 Support -XXLanguage:{+|-}LanguageFeature compiler arguments to enable/disable specific features
• KT-24637 Introduce "progressive" mode of compiler

Backend. JS

• KT-23094 JS compiler: Delegation fails to pass the continuation parameter to child suspend function
• KT-23582 JS: Fails to inline, produces bad code
• KT-24335 JS: Invalid implement of external interface

Backend. JVM

• KT-12330 Slightly improve generated bytecode for data class equals/hashCode methods
• KT-18576 Debugger fails to show decomposed suspend lambda parameters
• KT-22063 Add intrinsics for javaObjectType and javaPrimitiveType
• KT-23402 Internal error: Couldn't inline method call because the compiler couldn't obtain compiled body for inline function with reified type parameter
• KT-23704 Unstable checkExpressionValueIsNotNull() generation in bytecode
• KT-23707 Unstable bridge generation order
• KT-23857 Annotation with target TYPE is not applicable to TYPE_USE in Java sources
• KT-23910 @jvmoverloads doesn't work with default arguments in common code
• KT-24427 Protected function having toArray-like signature from collection becomes public in bytecode
• KT-24661 Support binary compatibility mode for @JvmDefault

Frontend

• KT-21129 Unused parameter in property setter is not reported
• KT-21157 Kotlin script: engine can take forever to eval certain code after several times
• KT-22740 REPL slows down during extensions compiling
• KT-23124 Kotlin multiplatform project causes IntelliJ build errors
• KT-23209 Compiler throwing frontend exception
• KT-23589 Report a warning on local annotation classes
• KT-23760 Unable to implement common interface with fun member function with typealiased parameter

Android

• KT-23244 Option to Disable View Binding generation in Kotlin Android Extensions Plugin

IDE

• KT-8407 TestNG: running tests from context creates new run configuration every time
• KT-9218 Searching for compilable files takes too long
• KT-15019 Editor: args reference in .kts file is red
• KT-18769 Expand Selection on opening curly brace should select the entire block right away
• KT-19055 Idea hangs on copy-paste big Kotlin files
• KT-20605 Unresolved reference on instance from common module function
• KT-20824 Type mismatch for common function taking a non-mapped Kotlin's expected class from stdlib-common, with actual typealias on JVM
• KT-20897 Can't navigate to declaration after PsiInvalidElementAccessException exception
• KT-22527 Kotlin UAST does not evaluate values inside delegation expressions
• KT-22868 Implementing an expected class declaration using actual typealias produces "good code that is red"
• KT-22922 Override Members should add experimental annotation when required
• KT-23384 Hotspot in org.jetbrains.kotlin.idea.caches.resolve.IDELightClassGenerationSupport.getKotlinInternalClasses(FqName, GlobalSearchScope) IDELightClassGenerationSupport.kt ?
• KT-23408 Don't render @nonnull and @nullable annotations in parameter info for Java methods
• KT-23557 Expression Bodies should have implicit return in Uast
• KT-23745 Unable to implement common interface
• KT-23746 Logger$EmptyThrowable "[kts] cannot find a valid script definition annotation on the class class ScriptTemplateWithArgs" with LivePlugin enabled
• KT-23975 Move Kotlin internal actions under Idea Internal actions menu
• KT-24268 Other main menu item
• KT-24438 ISE “The provided plugin org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar is not compatible with this version of compiler” after rebuilding simple Gradle-based project via JPS.

IDE. Configuration

• KT-10935 Add menu entry to create new kotlin .kts scripts
• KT-20511 Library added from maven (using IDEA UI) is not detected as Kotlin/JS library (since type="repository")
• KT-20665 Kotlin Gradle script created by New Project/Module wizard fails with Gradle 4.1+
• KT-21844 Create Kotlin class dialog: make class abstract automatically
• KT-22305 Language and API versions of Kotlin compiler are “Latest” by default in some ways of creating new project
• KT-23261 New MPP design: please show popup with error message if module name is not set
• KT-23638 Kotlin plugin breaks project opening for PhpStorm/WebStorm
• KT-23658 Unclear options “Gradle” and “Gradle (Javascript)” on configuring Kotlin in Gradle- and Maven-based projects
• KT-23845 IntelliJ Maven Plugin does not pass javaParameters option to Kotlin facet
• KT-23980 Move "Update Channel" from "Configure Kotlin Plugin Updates" to settings
• KT-24504 Existent JPS-based Kotlin/JS module is converted to new format, while New Project wizard and facet manipulations still create old format

IDE. Debugger

• KT-23886 Both java and kotlin breakpoints in kotlin files
• KT-24136 Debugger: update drop-down menu for the line with lambdas

IDE. Editing

• KT-2582 When user inputs triple quote, add matching triple quote automatically
• KT-5206 Long lists of arguments are not foldable
• KT-23457 Auto-import and Import quick fix do not suggest classes from common module [Common test can't find class with word Abstract in name.]
• KT-23235 Super slow editing with auto imports enabled

IDE. Gradle

• KT-23234 Test names for tests containing inner classes are sporadically reported to teamcity runs.
• KT-23383 Optional plugin dependency for kotlin gradle plugin 'java' subsystem dependent features
• KT-22588 Resolver for 'project source roots and libraries for platform JVM' does not know how to resolve on Gradle Kotlin DSL project without Java and Kotlin
• KT-23616 Synchronize script dependencies not at Gradle Sync
• KT-24444 Do not store proxy objects from Gradle importer in the project model
• KT-24586 MVNFE “Cannot resolve external dependency org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.41 because no repositories are defined.” on creating Gradle project with Kotlin only (probably due to lack of repositories block)
• KT-24671 dependencies missed in buildscript block after creating new Gradle-based project in 173 IDEA

IDE. Inspections and Intentions

New Features

• [`KT-...

1.2.50

Compiler

• KT-23360 Do not serialize annotations with retention SOURCE to metadata
• KT-24278 Hard-code to kotlin compiler annotation for android library migration
• KT-24472 Support argfiles in kotlinc with -Xargfile
• KT-24593 Support -XXLanguage:{+|-}LanguageFeature compiler arguments to enable/disable specific features

Backend. JS

• KT-23094 JS compiler: Delegation fails to pass the continuation parameter to child suspend function
• KT-23582 JS: Fails to inline, produces bad code
• KT-24335 JS: Invalid implement of external interface

Backend. JVM

• KT-12330 Slightly improve generated bytecode for data class equals/hashCode methods
• KT-18576 Debugger fails to show decomposed suspend lambda parameters
• KT-22063 Add intrinsics for javaObjectType and javaPrimitiveType
• KT-23402 Internal error: Couldn't inline method call because the compiler couldn't obtain compiled body for inline function with reified type parameter
• KT-23704 Unstable checkExpressionValueIsNotNull() generation in bytecode
• KT-23707 Unstable bridge generation order
• KT-23857 Annotation with target TYPE is not applicable to TYPE_USE in Java sources
• KT-23910 @jvmoverloads doesn't work with default arguments in common code
• KT-24427 Protected function having toArray-like signature from collection becomes public in bytecode
• KT-24661 Support binary compatibility mode for @JvmDefault

Frontend

• KT-21129 Unused parameter in property setter is not reported
• KT-21157 Kotlin script: engine can take forever to eval certain code after several times
• KT-22740 REPL slows down during extensions compiling
• KT-23124 Kotlin multiplatform project causes IntelliJ build errors
• KT-23209 Compiler throwing frontend exception
• KT-23589 Report a warning on local annotation classes
• KT-23760 Unable to implement common interface with fun member function with typealiased parameter

IDE

• KT-8407 TestNG: running tests from context creates new run configuration every time
• KT-9218 Searching for compilable files takes too long
• KT-15019 Editor: args reference in .kts file is red
• KT-18769 Expand Selection on opening curly brace should select the entire block right away
• KT-19055 Idea hangs on copy-paste big Kotlin files
• KT-20605 Unresolved reference on instance from common module function
• KT-20824 Type mismatch for common function taking a non-mapped Kotlin's expected class from stdlib-common, with actual typealias on JVM
• KT-20897 Can't navigate to declaration after PsiInvalidElementAccessException exception
• KT-22527 Kotlin UAST does not evaluate values inside delegation expressions
• KT-22868 Implementing an expected class declaration using actual typealias produces "good code that is red"
• KT-22922 Override Members should add experimental annotation when required
• KT-23384 Hotspot in org.jetbrains.kotlin.idea.caches.resolve.IDELightClassGenerationSupport.getKotlinInternalClasses(FqName, GlobalSearchScope) IDELightClassGenerationSupport.kt ?
• KT-23408 Don't render @nonnull and @nullable annotations in parameter info for Java methods
• KT-23557 Expression Bodies should have implicit return in Uast
• KT-23745 Unable to implement common interface
• KT-23746 Logger$EmptyThrowable "[kts] cannot find a valid script definition annotation on the class class ScriptTemplateWithArgs" with LivePlugin enabled
• KT-23975 Move Kotlin internal actions under Idea Internal actions menu
• KT-24268 Other main menu item
• KT-24438 ISE “The provided plugin org.jetbrains.kotlin.scripting.compiler.plugin.ScriptingCompilerConfigurationComponentRegistrar is not compatible with this version of compiler” after rebuilding simple Gradle-based project via JPS.

IDE. Configuration

• KT-10935 Add menu entry to create new kotlin .kts scripts
• KT-20511 Library added from maven (using IDEA UI) is not detected as Kotlin/JS library (since type="repository")
• KT-20665 Kotlin Gradle script created by New Project/Module wizard fails with Gradle 4.1+
• KT-21844 Create Kotlin class dialog: make class abstract automatically
• KT-22305 Language and API versions of Kotlin compiler are “Latest” by default in some ways of creating new project
• KT-23261 New MPP design: please show popup with error message if module name is not set
• KT-23638 Kotlin plugin breaks project opening for PhpStorm/WebStorm
• KT-23658 Unclear options “Gradle” and “Gradle (Javascript)” on configuring Kotlin in Gradle- and Maven-based projects
• KT-23845 IntelliJ Maven Plugin does not pass javaParameters option to Kotlin facet
• KT-23980 Move "Update Channel" from "Configure Kotlin Plugin Updates" to settings
• KT-24504 Existent JPS-based Kotlin/JS module is converted to new format, while New Project wizard and facet manipulations still create old format

IDE. Debugger

• KT-23886 Both java and kotlin breakpoints in kotlin files
• KT-24136 Debugger: update drop-down menu for the line with lambdas

IDE. Editing

• KT-2582 When user inputs triple quote, add matching triple quote automatically
• KT-5206 Long lists of arguments are not foldable
• KT-23457 Auto-import and Import quick fix do not suggest classes from common module [Common test can't find class with word Abstract in name.]
• KT-23235 Super slow editing with auto imports enabled

IDE. Gradle

• KT-23234 Test names for tests containing inner classes are sporadically reported to teamcity runs.
• KT-23383 Optional plugin dependency for kotlin gradle plugin 'java' subsystem dependent features
• KT-22588 Resolver for 'project source roots and libraries for platform JVM' does not know how to resolve on Gradle Kotlin DSL project without Java and Kotlin
• KT-23616 Synchronize script dependencies not at Gradle Sync
• KT-24586 MVNFE “Cannot resolve external dependency org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.2.41 because no repositories are defined.” on creating Gradle project with Kotlin only (probably due to lack of repositories block)
• KT-24671 dependencies missed in buildscript block after creating new Gradle-based project in 173 IDEA

IDE. Inspections and Intentions

New Features

• KT-7822 Convert foreach to for loop should place caret on the variable declaration
• KT-9943 Quick fix/Intention to indent a raw string
• KT-15063 Inspection for coroutine: unused Deferred result
• [KT-16085](https://youtrack.jetbrains.com/issue...

1.2.50

Compiler

• KT-23360 Do not serialize annotations with retention SOURCE to metadata
• KT-24278 Hard-code to kotlin compiler annotation for android library migration

Backend. JS

• KT-23582 JS: Fails to inline, produces bad code
• KT-24335 JS: Invalid implement of external interface

Backend. JVM

• KT-12330 Slightly improve generated bytecode for data class equals/hashCode methods
• KT-22063 Add intrinsics for javaObjectType and javaPrimitiveType
• KT-23704 Unstable checkExpressionValueIsNotNull() generation in bytecode
• KT-23707 Unstable bridge generation order
• KT-23910 @jvmoverloads doesn't work with default arguments in common code
• KT-18576 Debugger fails to show decomposed suspend lambda parameters
• KT-23402 Internal error: Couldn't inline method call because the compiler couldn't obtain compiled body for inline function with reified type parameter

Frontend

• KT-23760 Unable to implement common interface with fun member function with typealiased parameter
• KT-21129 Unused parameter in property setter is not reported
• KT-23589 Report a warning on local annotation classes
• KT-23124 Kotlin multiplatform project causes IntelliJ build errors
• KT-23209 Compiler throwing frontend exception
• KT-21157 Kotlin script: engine can take forever to eval certain code after several times
• KT-22740 REPL slows down during extensions compiling

IDE

• KT-19055 Idea hangs on copy-paste big Kotlin files
• KT-15019 Editor: args reference in .kts file is red
• KT-18769 Expand Selection on opening curly brace should select the entire block right away
• KT-20605 Unresolved reference on instance from common module function
• KT-20824 Type mismatch for common function taking a non-mapped Kotlin's expected class from stdlib-common, with actual typealias on JVM
• KT-20897 Can't navigate to declaration after PsiInvalidElementAccessException exception
• KT-22868 Implementing an expected class declaration using actual typealias produces "good code that is red"
• KT-23745 Unable to implement common interface
• KT-23975 Move Kotlin internal actions under Idea Internal actions menu
• KT-24268 Other main menu item
• KT-22527 Kotlin UAST does not evaluate values inside delegation expressions
• KT-23557 Expression Bodies should have implicit return in Uast
• KT-23384 Hotspot in org.jetbrains.kotlin.idea.caches.resolve.IDELightClassGenerationSupport.getKotlinInternalClasses(FqName, GlobalSearchScope) IDELightClassGenerationSupport.kt ?

IDE. Configuration

• KT-10935 Add menu entry to create new kotlin .kts scripts
• KT-23638 Kotlin plugin breaks project opening for PhpStorm/WebStorm
• KT-23980 Move "Update Channel" from "Configure Kotlin Plugin Updates" to settings

IDE. Debugger

• KT-23886 Both java and kotlin breakpoints in kotlin files
• KT-24136 Debugger: update drop-down menu for the line with lambdas

IDE. Editing

• KT-2582 When user inputs triple quote, add matching triple quote automatically
• KT-23235 Super slow editing with auto imports enabled
• KT-5206 Long lists of arguments are not foldable
• KT-23457 Auto-import and Import quick fix do not suggest classes from common module [Common test can't find class with word Abstract in name.]

IDE. Gradle

• KT-23234 Test names for tests containing inner classes are sporadically reported to teamcity runs.
• KT-23383 Optional plugin dependency for kotlin gradle plugin 'java' subsystem dependent features
• KT-22588 Resolver for 'project source roots and libraries for platform JVM' does not know how to resolve on Gradle Kotlin DSL project without Java and Kotlin
• KT-23616 Synchronize script dependencies not at Gradle Sync

IDE. Inspections and Intentions

New Features

• KT-7822 Convert foreach to for loop should place caret on the variable declaration
• KT-9943 Quick fix/Intention to indent a raw string
• KT-16085 Inspection "main should return Unit"
• KT-20305 Inspection: Refactor sealed sub-class to object
• KT-21413 Missing inspection: parentheses can be deleted when the only constructor parameter is a function not existing
• KT-23137 Intention for converting to block comment and vise versa
• KT-23266 Add intention(s) to put arguments / parameters on one line
• KT-23419 Intention to replace vararg with array and vice versa
• KT-23617 Add inspection: redundant internal in local anonymous object / class
• KT-23775 IntelliJ plugin: improve "accessor call that can be replaced with property"
• KT-24235 Inspection to replace async.await with withContext
• KT-24263 Add Make variable immutable quickfix for const

Performance Improvements

• KT-23566 "Can be private" works on ResolutionResultsCache.kt (from Kotlin project) enormously slow

Fixes

• KT-6364 Incorrect quick-fixes are suggested for nullable extension function call
• KT-11156 Incorrect highlighting for nested class in "Redundant SAM-constructor" inspection
• KT-11427 "Replace if with when" does not take break / continue into account
• KT-11740 Invert if condition intention should not remove line breaks
• KT-12042 "Merge with next when" is not applicable when the statements delimited by semicolon or comment
• KT-12168 "Remove explicit type specification" intention produce incompilable code in case of function type
• KT-14391 RemoveUnnecessaryParenthesesIntention lost comment on closing parenthesis
• KT-14556 Quickfix to suggest use of spread operator does not work with mapOf
• KT-15195 Redundant parentheses shouldn't be reported if lambda is not on the same line
• KT-19629 "Convert to primary constructor" quick fix should not move init{...} section down
• KT-20332 Unused property declaration suppression by annotation doesn't work if annotation is targeted to getter
• KT-22092 Intention "Specify return type explicitly": Propose types from overriden declarations
• KT-22632 Gutter icon "go to actual declaration" is absent for enum values on actual side
• KT-22741 Wrong suggestion for Replace 'if' expression with elvis expression
• KT-22831 Inspection for converting to elvis operator does not work for local vars
• KT-22860 "Add annotation target" quick fix does not take...

Compiler: Fixes

• KT-23901 Incremental compilation fails on Java 9
• KT-23931 Exception on optimizing eternal loops
• KT-23900 Exception on some cases with nested arrays
• KT-23809 Exception on processing complex hierarchies with suspend functions when -Xdump-declarations-to is active

Other changes

• KT-23973 New compiler behavior lead to ambiguous mappings in Spring Boot temporarily reverted

Compiler

New Features

• KT-22703 Allow expect/actual annotation constructors to have default values
• KT-19159 Support crossinline lambda parameters of suspend function type
• KT-21913 Support default arguments for expected declarations
• KT-19120 Provide extra compiler arguments in ScriptTemplateDefinition
• KT-19415 Introduce @JvmDefault annotation
• KT-21515 Restrict visibility of classifiers inside companion objects

Performance Improvements

• KT-10057 Use lcmp instruction instead of kotlin/jvm/internal/Intrinsics.compare
• KT-14258 Suboptimal codegen for private fieldaccess to private field in companion object
• KT-18731 == between enums should use reference equality, not Intrinsics.areEqual().
• KT-22714 Unnecessary checkcast to array of object from an array of specific type
• KT-5177 Optimize code generation for for loop with withIndex()
• KT-19477 Allow to implement several common modules with a single platform module
• KT-21347 Add compiler warning about using kotlin-stdlib-jre7 or kotlin-stdlib-jre8 artifacts

Fixes

• KT-16424 Broken bytecode for nullable generic methods
• KT-17171 ClassCastException in case of SAM conversion with out variance
• KT-19399 Incorrect bytecode generated for inline functions in some complex cases
• KT-21696 Incorrect warning for use-site target on extension function
• KT-22031 Non-abstract expect classes should not have abstract members
• KT-22260 Never flag inline suspend fun with NOTHING_TO_INLINE
• KT-22352 Expect/actual checker can't handle properties and functions with the same name
• KT-22652 Interface with default overrides is not perceived as a SAM
• KT-22904 Incorrect bytecode generated for withIndex iteration on Array<Int>
• KT-22906 Invalid class name generated for lambda created from method reference in anonymous object
• KT-23044 Overriden public property with internal setter cannot be found in runtime
• KT-23104 Incorrect code generated for LHS of an intrinsified in operator in case of generic type substituted with Character
• KT-23309 Minor spelling errors in JVM internal error messages
• KT-22001 JS: compiler crashes on += with "complex" receiver
• KT-23239 JS: Default arguments for non-final member function support is missing for MPP
• KT-17091 Converting to SAM Java type appends non-deterministic hash to class name
• KT-21521 Compilation exception when trying to compile a suspend function with tailrec keyword
• KT-21605 Cross-inlined coroutine with captured outer receiver creates unverifiable code
• KT-21864 Expect-actual matcher doesn't consider generic upper bounds
• KT-21906 ACTUAL_MISSING is reported for actual constructor of non-actual class
• KT-21939 Improve ACTUAL_MISSING diagnostics message
• KT-22513 Flaky "JarURLConnection.getUseCaches" NPE during compilation when using compiler plugins

Libraries

• KT-11208 readLine() shouldn't use buffered reader

IDE

New Features

• KT-10368 Run Action for Kotlin Scratch Files
• KT-16892 Shortcut to navigate between header and impl
• KT-23005 Support prefix/suffix attributes for language injection in Kotlin with annotations and comments

Performance Improvements

• KT-19484 KotlinBinaryClassCache retains a lot of memory
• KT-23183 ConfigureKotlinNotification.getNotificationString() scans modules with Kotlin files twice
• KT-23380 Improve IDE performance when working with Spring projects

Fixes

• KT-15482 KotlinNullPointerException in IDE from expected class with nested class
• KT-15739 Internal visibility across common and platform-dependent modules
• KT-19025 Not imported build.gradle.kts is all red
• KT-19165 IntelliJ should suggest to reload Gradle projects when build.gradle.kts changes
• KT-20282 'Move statement up' works incorrectly for statement after finally block if try block contains closure
• KT-20521 Kotlin Gradle script: valid build.gradle.kts is red and becomes normal only after reopening the project
• KT-20592 KotlinNullPointerException: nested class inside expect / actual interface
• KT-21013 "Move statement up/down" fails for multiline declarations
• KT-21420 .gradle.kts editor should do no semantic highlighting until the first successful dependency resolver response
• KT-21683 Language injection: JPAQL. Injection should be present for "query" parameter of @NamedNativeQueries
• KT-21745 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Maven
• KT-21746 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Gradle
• KT-21753 Language injection: SpEL. Not injected for key in @Caching
• KT-21771 All annotations in Annotations.kt from kotlin-test-js module wrongly have ACTUAL_MISSING
• KT-21831 Opening class from kotlin-stdlib-jdk8.jar fails with EE: "Stub list in ... length differs from PSI"
• KT-22229 Kotlin local delegated property Import auto-removed with "Java: Optimize imports on the fly"
• KT-22724 ISE: "psiFile must not be null" at KotlinNodeJsRunConfigurationProducer.setupConfigurationFromContext()
• KT-22817 Hitting 'Propagate Parameters' in Change Signature throws UnsupportedOperationException
• KT-22851 Apply button is always active on Kotlin compiler settings tab
• KT-22858 Multiplatform: String constructor parameter is reported in Java file of jvm module on creation of a new instance of a class from common module
• KT-22865 Support multiple expectedBy dependencies when importing project from Gradle or Maven
• KT-22873 Common module-based light classes do not see JDK
• KT-22874 Exception on surround with "if else" when resulting if should be wrapped with ()
• KT-22925 Unable to view Type Hierarchy from constructor call in expression
• KT-22926 Confusing behavior of Type Hierarchy depending on the caret position at superclass constructor
• KT-23097 Enhance multiplatform project wizard
• KT-23271 Warn about using kotlin-stdlib-jre* libs in dependencyManagement section in Maven with eap and dev Kotlin versions
• KT-20672 IDE can't resolve references to elements from files with @JvmPackageName
• KT-23546 Variable name auto-completion popup gets in the way
• KT-23546 Do not show duplicated names in variabl...

Compiler

New Features

• KT-22703 Allow expect/actual annotation constructors to have default values
• KT-19159 Support crossinline lambda parameters of suspend function type
• KT-21913 Support default arguments for expected declarations
• KT-19120 Provide extra compiler arguments in ScriptTemplateDefinition
• KT-19415 Introduce @JvmDefault annotation
• KT-21515 Restrict visibility of classifiers inside companion objects

Performance Improvements

• KT-10057 Use lcmp instruction instead of kotlin/jvm/internal/Intrinsics.compare
• KT-14258 Suboptimal codegen for private fieldaccess to private field in companion object
• KT-18731 == between enums should use reference equality, not Intrinsics.areEqual().
• KT-22714 Unnecessary checkcast to array of object from an array of specific type
• KT-5177 Optimize code generation for for loop with withIndex()
• KT-19477 Allow to implement several common modules with a single platform module
• KT-21347 Add compiler warning about using kotlin-stdlib-jre7 or kotlin-stdlib-jre8 artifacts

Fixes

• KT-16424 Broken bytecode for nullable generic methods
• KT-17171 ClassCaseException in case of SAM conversion with out variance
• KT-19399 Incorrect bytecode generated for inline functions in some complex cases
• KT-21696 Incorrect warning for use-site target on extension function
• KT-22031 Non-abstract expect classes should not have abstract members
• KT-22260 Never flag inline suspend fun with NOTHING_TO_INLINE
• KT-22352 Expect/actual checker can't handle properties and functions with the same name
• KT-22652 Interface with default overrides is not perceived as a SAM
• KT-22904 Incorrect bytecode generated for withIndex iteration on Array<Int>
• KT-22906 Invalid class name generated for lambda created from method reference in anonymous object
• KT-23044 Overriden public property with internal setter cannot be found in runtime
• KT-23104 Incorrect code generated for LHS of an intrinsified in operator in case of generic type substituted with Character
• KT-23309 Minor spelling errors in JVM internal error messages
• KT-22001 JS: compiler crashes on += with "complex" receiver
• KT-23239 JS: Default arguments for non-final member function support is missing for MPP
• KT-17091 Converting to SAM Java type appends non-deterministic hash to class name
• KT-21521 Compilation exception when trying to compile a suspend function with tailrec keyword
• KT-21605 Cross-inlined coroutine with captured outer receiver creates unverifiable code
• KT-21864 Expect-actual matcher doesn't consider generic upper bounds
• KT-21906 ACTUAL_MISSING is reported for actual constructor of non-actual class
• KT-21939 Improve ACTUAL_MISSING diagnostics message
• KT-22513 Flaky "JarURLConnection.getUseCaches" NPE during compilation when using compiler plugins

Libraries

• KT-11208 readLine() shouldn't use buffered reader

IDE

New Features

• KT-10368 Run Action for Kotlin Scratch Files
• KT-16892 Shortcut to navigate between header and impl
• KT-23005 Support prefix/suffix attributes for language injection in Kotlin with annotations and comments

Performance Improvements

• KT-19484 KotlinBinaryClassCache retains a lot of memory
• KT-23183 ConfigureKotlinNotification.getNotificationString() scans modules with Kotlin files twice
• KT-23380 Improve IDE performance when working with Spring projects

Fixes

• KT-15482 KotlinNullPointerException in IDE from expected class with nested class
• KT-15739 Internal visibility across common and platform-dependent modules
• KT-19025 Not imported build.gradle.kts is all red
• KT-19165 IntelliJ should suggest to reload Gradle projects when build.gradle.kts changes
• KT-20282 'Move statement up' works incorrectly for statement after finally block if try block contains closure
• KT-20521 Kotlin Gradle script: valid build.gradle.kts is red and becomes normal only after reopening the project
• KT-20592 KotlinNullPointerException: nested class inside expect / actual interface
• KT-21013 "Move statement up/down" fails for multiline declarations
• KT-21420 .gradle.kts editor should do no semantic highlighting until the first successful dependency resolver response
• KT-21683 Language injection: JPAQL. Injection should be present for "query" parameter of @NamedNativeQueries
• KT-21745 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Maven
• KT-21746 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Gradle
• KT-21753 Language injection: SpEL. Not injected for key in @Caching
• KT-21771 All annotations in Annotations.kt from kotlin-test-js module wrongly have ACTUAL_MISSING
• KT-21831 Opening class from kotlin-stdlib-jdk8.jar fails with EE: "Stub list in ... length differs from PSI"
• KT-22229 Kotlin local delegated property Import auto-removed with "Java: Optimize imports on the fly"
• KT-22724 ISE: "psiFile must not be null" at KotlinNodeJsRunConfigurationProducer.setupConfigurationFromContext()
• KT-22817 Hitting 'Propagate Parameters' in Change Signature throws UnsupportedOperationException
• KT-22851 Apply button is always active on Kotlin compiler settings tab
• KT-22858 Multiplatform: String constructor parameter is reported in Java file of jvm module on creation of a new instance of a class from common module
• KT-22865 Support multiple expectedBy dependencies when importing project from Gradle or Maven
• KT-22873 Common module-based light classes do not see JDK
• KT-22874 Exception on surround with "if else" when resulting if should be wrapped with ()
• KT-22925 Unable to view Type Hierarchy from constructor call in expression
• KT-22926 Confusing behavior of Type Hierarchy depending on the caret position at superclass constructor
• KT-23097 Enhance multiplatform project wizard
• KT-23271 Warn about using kotlin-stdlib-jre* libs in dependencyManagement section in Maven with eap and dev Kotlin versions
• KT-20672 IDE can't resolve references to elements from files with @JvmPackageName
• KT-23546 Variable name auto-completion popup gets in the way

IDE. Gradle. Script

• KT-23228 Do not hig...

Compiler

New Features

• KT-22703 Allow expect/actual annotation constructors to have default values
• KT-19159 Support crossinline lambda parameters of suspend function type
• KT-21913 Support default arguments for expected declarations
• KT-19120 Provide extra compiler arguments in ScriptTemplateDefinition
• KT-19415 Introduce @JvmDefault annotation
• KT-21515 Restrict visibility of classifiers inside companion objects

Performance Improvements

• KT-10057 Use lcmp instruction instead of kotlin/jvm/internal/Intrinsics.compare
• KT-14258 Suboptimal codegen for private fieldaccess to private field in companion object
• KT-18731 == between enums should use reference equality, not Intrinsics.areEqual().
• KT-22714 Unnecessary checkcast to array of object from an array of specific type
• KT-5177 Optimize code generation for for loop with withIndex()
• KT-19477 Allow to implement several common modules with a single platform module
• KT-21347 Add compiler warning about using kotlin-stdlib-jre7 or kotlin-stdlib-jre8 artifacts

Fixes

• KT-16424 Broken bytecode for nullable generic methods
• KT-17171 ClassCaseException in case of SAM conversion with out variance
• KT-19399 Incorrect bytecode generated for inline functions in some complex cases
• KT-21696 Incorrect warning for use-site target on extension function
• KT-22031 Non-abstract expect classes should not have abstract members
• KT-22260 Never flag inline suspend fun with NOTHING_TO_INLINE
• KT-22352 Expect/actual checker can't handle properties and functions with the same name
• KT-22652 Interface with default overrides is not perceived as a SAM
• KT-22904 Incorrect bytecode generated for withIndex iteration on Array<Int>
• KT-22906 Invalid class name generated for lambda created from method reference in anonymous object
• KT-23044 Overriden public property with internal setter cannot be found in runtime
• KT-23104 Incorrect code generated for LHS of an intrinsified in operator in case of generic type substituted with Character
• KT-23309 Minor spelling errors in JVM internal error messages
• KT-22001 JS: compiler crashes on += with "complex" receiver
• KT-23239 JS: Default arguments for non-final member function support is missing for MPP
• KT-17091 Converting to SAM Java type appends non-deterministic hash to class name
• KT-21521 Compilation exception when trying to compile a suspend function with tailrec keyword
• KT-21605 Cross-inlined coroutine with captured outer receiver creates unverifiable code
• KT-21864 Expect-actual matcher doesn't consider generic upper bounds
• KT-21906 ACTUAL_MISSING is reported for actual constructor of non-actual class
• KT-21939 Improve ACTUAL_MISSING diagnostics message

Libraries

• KT-11208 readLine() shouldn't use buffered reader

IDE

New Features

• KT-10368 Run Action for Kotlin Scratch Files
• KT-16892 Shortcut to navigate between header and impl
• KT-23005 Support prefix/suffix attributes for language injection in Kotlin with annotations and comments

Performance Improvements

• KT-19484 KotlinBinaryClassCache retains a lot of memory
• KT-23183 ConfigureKotlinNotification.getNotificationString() scans modules with Kotlin files twice
• KT-23380 Improve IDE performance when working with Spring projects

Fixes

• KT-15482 KotlinNullPointerException in IDE from expected class with nested class
• KT-15739 Internal visibility across common and platform-dependent modules
• KT-19025 Not imported build.gradle.kts is all red
• KT-19165 IntelliJ should suggest to reload Gradle projects when build.gradle.kts changes
• KT-20282 'Move statement up' works incorrectly for statement after finally block if try block contains closure
• KT-20521 Kotlin Gradle script: valid build.gradle.kts is red and becomes normal only after reopening the project
• KT-20592 KotlinNullPointerException: nested class inside expect / actual interface
• KT-21013 "Move statement up/down" fails for multiline declarations
• KT-21420 .gradle.kts editor should do no semantic highlighting until the first successful dependency resolver response
• KT-21683 Language injection: JPAQL. Injection should be present for "query" parameter of @NamedNativeQueries
• KT-21745 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Maven
• KT-21746 Warning and quickfix about kotlin-stdlib-jre7/8 -> kotlin-stdlib-jdk7/8 in Gradle
• KT-21753 Language injection: SpEL. Not injected for key in @Caching
• KT-21771 All annotations in Annotations.kt from kotlin-test-js module wrongly have ACTUAL_MISSING
• KT-21831 Opening class from kotlin-stdlib-jdk8.jar fails with EE: "Stub list in ... length differs from PSI"
• KT-22229 Kotlin local delegated property Import auto-removed with "Java: Optimize imports on the fly"
• KT-22724 ISE: "psiFile must not be null" at KotlinNodeJsRunConfigurationProducer.setupConfigurationFromContext()
• KT-22817 Hitting 'Propagate Parameters' in Change Signature throws UnsupportedOperationException
• KT-22851 Apply button is always active on Kotlin compiler settings tab
• KT-22858 Multiplatform: String constructor parameter is reported in Java file of jvm module on creation of a new instance of a class from common module
• KT-22865 Support multiple expectedBy dependencies when importing project from Gradle or Maven
• KT-22873 Common module-based light classes do not see JDK
• KT-22874 Exception on surround with "if else" when resulting if should be wrapped with ()
• KT-22925 Unable to view Type Hierarchy from constructor call in expression
• KT-22926 Confusing behavior of Type Hierarchy depending on the caret position at superclass constructor
• KT-23097 Enhance multiplatform project wizard
• KT-23271 Warn about using kotlin-stdlib-jre* libs in dependencyManagement section in Maven with eap and dev Kotlin versions
• KT-20672 IDE can't resolve references to elements from files with @JvmPackageName

IDE. Gradle. Script

• KT-23228 Do not highlight .gradle.kts files in non-Gradle projects

IDE. Inspections and Intentions

New Features

• KT-16382 Intention to convert expr.unsafeCast<Type>() to expr as Type and vice versa
• [`KT-2043...