CHANGELOG

1.3.30

Compiler

New Features

• KT-19664 Allow more permissive visibility for non-virtual actual declarations
• KT-29586 Add support for Android platform annotations
• KT-29604 Do not implicitly propagate deprecations originated in Java

Performance Improvements

• KT-24876 Emit calls to java.lang.Long.divideUnsigned for unsigned types when target version is 1.8
• KT-25974 'when' by unsigned integers is not translated to tableswitch/lookupswitch
• KT-28015 Coroutine state-machine shall use Result.throwOnFailure
• KT-29229 Intrinsify 'in' operator for unsigned integer ranges
• KT-29230 Specialize 'next' method call for unsigned integer range and progression iterators

Fixes

• KT-7185 Parse import directives in the middle of the file, report a diagnostic instead
• KT-7237 Parser recovery (angle bracket mismatch)
• KT-11656 Could not generate LightClass because of ISE from bridge generation on invalid code
• KT-13497 Better recovery in comma-separated lists in case of missing comma
• KT-13703 Restore parser better when class is missing from enum declaration
• KT-13731 Recover parser on value parameter without a type
• KT-14227 Incorrect code is generated when using MutableMap.set with plusAssign operator
• KT-19389 Couldn't inline method call 'with'
• KT-20065 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with generic typealias
• KT-20322 Debug: member value returned from suspending function is not updated immediately
• KT-20780 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with parameterized inner type alias
• KT-21405 Throwable “Rewrite at slice LEXICAL_SCOPE key: VALUE_PARAMETER_LIST” on editing string literal in kotlin-js module
• KT-21775 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with typealias used from a different module
• KT-22818 "UnsupportedOperationException: Don't know how to generate outer expression" on using non-trivial expression in default argument of expect function
• KT-23117 Local delegate + local object = NoSuchMethodError
• KT-23701 Report error when -Xmultifile-parts-inherit is used and relevant JvmMultifileClass parts have any state
• KT-23992 Target prefixes for annotations on supertype list elements are not checked
• KT-24490 Wrong type is inferred when last expression in lambda has functional type
• KT-24871 Optimize iteration and contains for UIntRange/ULongRange
• KT-24964 "Cannot serialize error type: [ERROR : Unknown type parameter 0]" with Validated typealias from Arrow
• KT-25383 Named function as last statement in lambda doesn't coerce to Unit
• KT-25431 Type mismatch when trying to bind mutable property with complex common system
• KT-25435 Try/catch as the last expression of lambda cause type mismatch
• KT-25437 Type variable fixation of postponed arguments and type variables with Nothing constraint
• KT-25446 Empty labeled return doesn't force coercion to Unit
• KT-26069 NoSuchMethodError on calling remove/getOrDefault on a Kotlin subclass of Java subclass of Map
• KT-26638 Check for repeatablilty of annotations doesn't take into account annotations with use-site target
• KT-26816 Lambdas to Nothing is inferred if multilevel collections is used (listOf, mapOf, etc)
• KT-27190 State machine elimination after inlining stopped working (regression)
• KT-27241 Contracts: smartcasts don't work correctly if type checking for contract function is used
• KT-27565 Lack of fallback resolution for SAM conversions for Kotlin functions in new inference
• KT-27799 Prohibit references to reified type parameters in annotation arguments in local classes / anonymous objects
• KT-28182 Kotlin Bytecode tool window shows incorrect output on annotated property with backing field
• KT-28236 "Cannot serialize error type: [ERROR : Unknown type parameter 2]" with inferred type arguments in generic extension function from Arrow
• KT-28309 Do not generate LVT entries with different types pointing to the same slot, but have different types
• KT-28317 Strange behavior in testJvmAssertInlineFunctionAssertionsEnabled on Jdk 6 and exception on JDK 8
• KT-28453 Mark anonymous classes for callable references as synthetic
• KT-28598 Type is inferred incorrectly to Any on a deep generic type with out projection
• KT-28654 No report about type mismatch inside a lambda in generic functions with a type parameter as a return type
• KT-28670 Not null smartcasts on an intersection of nullable types don't work
• KT-28718 progressive mode plus new inference result in different floating-point number comparisons
• KT-28810 Suspend function's continuation parameter is missing from LVT
• KT-28855 NoSuchMethodError with vararg of unsigned Int in generic class constructor
• KT-28984 Exception when subtype of kotlin.Function is used as an expected one for lambda or callable reference
• KT-28993 Incorrect behavior when two lambdas are passed outside a parenthesized argument list
• KT-29144 Interface with companion object generates invalid bytecode in progressive mode
• KT-29228 Intrinsify 'for' loop for unsigned integer ranges and progressions
• KT-29324 Warnings indexing jdk 11 classes
• KT-29367 New inference doesn't wrap annotated type from java to TypeWithEnhancement
• KT-29507 @field-targeted annotation on property with both getter and setter is absent from bytecode
• KT-29705 'Rewrite at slice CONSTRUCTOR` of JS class while editing another JVM-class
• KT-29792 UnsupportedOperationException: Unsupported annotation argument type when using Java annotation with infinity or NaN as a default value
• KT-29891 Kotlin doesn't allow to use local class literals as annotation arguments
• KT-29912 Crossinline nonsuspend lambda leads to KNPE during inlining
• KT-29965 Don't generate annotation on $default method
• KT-30030 Extensive 'Rewrite at slice'-exception with contracts in JS module of multiplatform project
• KT-22043 Report an error when comparing enum (==/!=/when) to any other incompatible type since 1.4
• KT-26150 KotlinFrontendException is thrown when callsInPlace called twice with different InvocationKind in functions with contracts
• KT-26153 Contract is allowed when it's at the beginning in control flow terms, but not in tokens order terms (contract doesn't work)
• KT-26191 Contract may not be the first statement if it's part of the expression
• KT-29178 Prohibit arrays of reified type parameters in annotation arguments in local classes / anonymous objects
• KT-20507 PROTECTED_CONSTRUCTOR_NOT_IN_SUPER_CALL not reported for generic base class constructor call, IAE at run-time
• KT-20849 Inference results in Nothing type argument in case of passing 'out T' to 'in T1'
• KT-28285 NullPointerException on calling Array constructor compiled via Excelsior JET
• KT-29376 Report a deprecation warning when comparing enum to any other incompatible type
• KT-29884 Report warning on @synchronized on inline method
• KT-30073 ClassCastException on coroutine start with crossinline lambda
• KT-30597 "Extend selection" throws exception in empty class body case

IDE

New Features

• KT-26950 Support Multiline TODO comments
• KT-29034 Make JvmDeclarationSearch find private fields in kotlin classes

Performance Improvements

• KT-29457 FindImplicitNothingAction#update freezes UI for 30 secs
• KT-29551 CreateKotlinSdkActivity runs on UI thread

Fixes

• KT-11143 Do not insert closing brace for string template between open brace and identifier
• KT-18503 Optimize imports produces red code
• KT-27283 KotlinULiteralExpression and PsiLanguageInjectionHost mismatch
• KT-27794 KotlinAnnotatedElementsSearcher doesn't process method parameters
• KT-28272 UAST: Need to be able to identify SAM conversions
• KT-28360 Getting tons of "There are 2 classes with same fqName" logs in IntelliJ
• KT-28739 Bad caret position after Insert curly braces around variable inspection
• KT-29013 Injection with interpolation loses suffix
• KT-29025 Implement UReferenceExpression.referenceNameElement for Kotlin
• KT-29287 Exception in ultra-light classes on method annotated with @throws
• KT-29381 Highlight return lambda expressions when cursor is one the call with lambda argument
• KT-29434 Can not detect injection host in string passed as argument into arrayOf() function
• KT-29464 Project reopening does not create missing Kotlin SDK for Native modules (like it does for other non-JVM ones)
• KT-29467 Maven/Gradle re-import does not add missing Kotlin SDK for kotlin2js modules (non-MPP JavaScript)
• KT-29804 Probable error in the "Kotlin (Mobile Android/iOS)" new project template in IntelliJ
• KT-30033 UAST: Delegation expression missing from parse tree
• KT-30388 Disable constant exception reporting from release versions
• KT-30524 "java.lang.IllegalStateException: This method shouldn't be invoked for LOCAL visibility" on add import
• KT-30534 KotlinUObjectLiteralExpression returns classReference whose referenceNameElement is null
• KT-30546 Kotlin UImportStatement's children references always resolve to null

IDE. Android

• KT-29847 Many IDEA plugins are not loaded in presence of Kotlin plugin: "Plugins should not have cyclic dependencies"

IDE. Code Style, Formatting

• KT-23295 One-line comment indentation in functions with expression body
• KT-28905 When is "... if long" hitting?
• KT-29304 Settings / Code Style / Kotlin mentions "methods" instead of functions

IDE. Completion

• KT-18663 Support "smart enter/complete statement" completion for method calls
• KT-28394 Improve code completion for top level class/interface to incorporate filename
• KT-29435 org.jetbrains.kotlin.types.TypeUtils.contains hanging forever and freezing IntelliJ
• KT-27915 Stop auto-completing braces for companion objects

IDE. Debugger

• KT-22250 Evaluate: 'this' shows different values when evaluated as a variable/watch
• KT-24829 Access to coroutineContext in 'Evaluate expression'
• KT-25220 Evaluator: a instance of Pair returned instead of String ("Extract function" failed)
• KT-25222 Evaluate: ClassCastException: ObjectValue cannot be cast to IntValue ("Extract function" failed)
• KT-26913 Change local variable name mangling ($receiver -> this_)
• KT-28087 [Kotlin/JVM view] Inconsistent debugging data inside forEachIndexed
• KT-28134 Separate JVM/Kotlin views in "Variables" tool window
• KT-28192 Exception from KotlinEvaluator: cannot find local variable
• KT-28680 Missing this word completion in "Evaluate expression" window
• KT-28728 Async stack trace support for Kotlin coroutines
• KT-21650 Debugger: Can't evaluate value, resolution error
• KT-23828 Debugger: "Smart cast is impossible" when evaluating expression
• KT-29661 Evaluate expression: "Cannot find local variable" for variable name escaped with backticks
• KT-29814 Can't evaluate a property on star-projected type
• KT-29871 Debugger in IDE does not handle correctly extensions.
• KT-30182 Incorrect KT elvis expression debugger evaluation
• KT-29189 [BE] 'Step Over' falls through 'return when' (and 'return if') instead of executing individual branches
• KT-29234 ISE “@NotNull method org/jetbrains/kotlin/codegen/binding/CodegenBinding.anonymousClassForCallable must not return null” on debugging with breakpoints in Kotlin script file
• KT-29423 Unable to evaluate lambdas on jdk 9-11
• KT-30220 Empty variables view when breakpoint inside an lambda inside class
• KT-30318 KotlinCoroutinesAsyncStackTraceProvider slows down java debugging

IDE. Decompiler

• KT-9618 Exception in ClassClsStubBuilder.createNestedClassStub() while opening recent project
• KT-29427 Exception in ClassClsStubBuilder.createNestedClassStub() for obfuscated library

IDE. Gradle

• KT-26865 Gradle build in IDE: error messages in Native sources are not hyperlinks
• KT-28515 Failed to import Kotlin project with gradle 5.0
• KT-29564 kotlin.parallel.tasks.in.project=true causes idea to create kotlin modules with target JVM 1.6
• KT-30076 Memory leaks in Kotlin import
• KT-30379 Gradle 5.3 publishes an MPP with broken Maven scope mapping

IDE. Gradle. Script

• KT-27684 Gradle Kotlin DSL: the rootProject field is unresolved in IDEA for a common module
• KT-29465 IndexNotReadyException on context menu invocation for build.gradle.kts file
• KT-29707 "Navigate declaration" navigates to compiled class in gradle cache folder instead of classes defined in gradle buildSrc folder
• KT-29832 Multiple Script Definitions for settings.gradle.kts
• KT-30623 Errors in build.gradle.kts after applying new script dependencies

IDE. Hints

• KT-29196 Variable type hints are redundant for constructor calls of nested classes
• KT-30058 IndexNotReadyException from quick documentation when popup is active

IDE. Hints. Inlay

• KT-19558 Wrong position of type hint while renaming Kotlin variable
• KT-27438 "Show lambda return expression hints" breaks code indentation
• KT-28870 Rework "Lambda return expression" hint as between_lines_hint of disable it by default

IDE. Hints. Parameter Info

• KT-29574 Incorrect parameter info popup for lambda nested in object

IDE. Inspections and Intentions

New Features

• KT-16118 "Introduce import alias" intention
• KT-17119 Inspection for (Scala-like) = { ... } syntax without expected type in function definition
• KT-26128 Inspection for suspension inside synchronized and withLock functions
• KT-27556 Add intention for collections, !collection.isEmpty() -> collection.isNotEmpty()
• KT-27670 Add quick fix: wrap expression in a lambda if compatible functional type is required
• KT-28803 Inspection: result of enum entries comparison is always false / true
• KT-28953 Add intention to add underscores to decimal numerical literal
• KT-29001 Add intention to move variable declaration before when-expression into when's subject
• KT-29113 Warn about redundant requireNotNull and checkNotNull usages
• KT-29321 "Remove empty primary constructor": apply for enum entries
• KT-12134 Suggest to remove qualifier in FQN name
• KT-17278 Inspection to replace Java 8 Map.forEach with Kotlin's forEach
• KT-26965 Add inspection + quickfix for replacing Collection.count() with .size
• KT-30123 Add intention to replace isEmpty/isNotEmpty method negation
• KT-25272 Unused expression as last expression of normal function should have quickfix to add "return"
• KT-30456 Improve: intention "Introduce Import Alias" should suggest new names for the new alias.

Fixes

• KT-7593 On splitting property declaration for functional expression additional bracket added
• KT-12273 "Replace with operator" intention is suggested for some non-operator functions and produces invalid code
• KT-18715 Replace if with elvis swallows comments
• KT-19254 Intention to convert object literal to class always creates a class named "O"
• KT-25501 "Replace overloaded operator with function call" changes semantics of increment and decrement operators
• KT-26979 "Lambda argument inside parentheses" inspection is not reported, if function type is actual type argument, but not formal parameter type
• KT-27143 Intention "Replace camel-case name with spaces" is suggested for snake_case names in test functions and renames them incorrectly
• KT-28081 "Convert to lambda" changes expression type for interface with multiple supertypes
• KT-28131 False positive "Redundant lambda arrow" with a functional type argument
• KT-28224 "Add braces to 'else' statement" moves comment outside braces when 'if-else' is inside 'if / when' branch
• KT-28592 False positive "Remove redundant backticks" for underscore variable name
• KT-28596 "Can be replaced with binary operator" shouldn't be suggested when receiver or argument is floating point type
• KT-28641 "Remove useless cast" produces a dangling lambda ("Too many arguments" error)
• KT-28698 "Convert to apply" intention: include function calls with this passed as an argument
• KT-28773 Kotlin/JS: Wrong inspection to replace .equals() with == on dynamic values
• KT-28851 'Convert parameter to receiver' adds Array<out T> wrapper to vararg parameter and drops override modifier in implementations
• KT-28969 TYPE_MISMATCH in array vs non-array case: two quick fixes exist for annotation and none of them adds array literal
• KT-28995 "Add parameter to constructor" quickfix for first enum member changes arguments for all members
• KT-29051 "Add parameter to constructor" quickfix for not-first enum member: "PsiInvalidElementAccessException: Element: class org.jetbrains.kotlin.psi.KtStringTemplateExpression #kotlin because: different providers"
• KT-29052 "Add parameter to constructor" quickfix for not-first enum member inserts FQN type for parameter
• KT-29056 KNPE in ConvertPrimaryConstructorToSecondary with missing property identifier
• KT-29085 False positive "Class member can have 'private' visibility" for a const val used in a public inline function
• KT-29093 False positive inspection "Redundant lambda arrow" with nested lambdas
• KT-29099 "Convert to apply" intention is not available for a single function call
• KT-29128 False positive 'Explicitly given type is redundant here' when typealias is used
• KT-29153 False negative "'rangeTo' or the '..' call should be replaced with 'until'" with bracketed expressions
• KT-29193 Quick fix "Create extension function" List<Int>.set should not be suggested for read-only collections
• KT-29238 Non-canonical modifiers order inspection incorrectly includes annotations into range
• KT-29248 "Convert member to extension" doesn't preserve visibility
• KT-29416 False positive "Redundant property getter" for external getter
• KT-29469 False positive in "Boolean literal argument without parameter name" inspection for varargs parameters
• KT-29549 Make package name convention inspection global
• KT-29567 "Remove empty class body" is a poor name for inspection text
• KT-29606 Do not propose to remove unused parameter of property setter
• KT-29763 False negative "Object literal can be converted to lambda" for block body function with explicit return
• KT-30007 False negative "Add import for '...'" in UserType
• KT-19944 multiplatform: Convert expect/actual function to property should keep the caret on the converted function
• KT-27289 "Create" quick fix on FQN does nothing with KNPE at KotlinRefactoringUtilKt$chooseContainerElement$1.renderText()
• KT-29312 "Make constructor parameter a property" produces wrong modifier order + exception "Invalid range specified"
• KT-29414 "Main parameter is not necessary" inspection reports parameter of main() in object
• KT-29499 "Unsafe call of inline function with nullable extension receiver" inspection ignores inferred nullability
• KT-29927 Missing "Import members from" intention with type check operator in when branch
• KT-30010 Introduce alternative quick-fixes for map[key]!!
• KT-30166 False positive "Redundant companion reference" on companion with the outer class name
• KT-14886 Create Property from Usage should place generated property next to other properties
• KT-16139 Adding explicit type argument leads to type mismatch
• KT-19462 False positive inspection "Redundant lambda arrow" for overloaded functions
• KT-22137 Create class quickfix is not suggested in return statement
• KT-23259 False positive unchecked cast warning/quickfix result in good code turning red
• KT-27641 "Specify type explicitly" suggests too general type even when type hint shows specific generic type
• KT-29124 False positive inspection 'Redundant lambda arrow' with generic function/constructor with lambda argument
• KT-29590 False positive inspection "Redundant lambda arrow" with vararg lambda arguments passed via spread operator
• KT-29977 False positive "Unused import directive" for typealias of an enum imported as static
• KT-30233 Change order of the quick fixes when method does not accept nullable types
• KT-30341 False positive 'Use withIndex() instead of manual index increment' inspection with destructive declaration in 'for' loop
• KT-30414 "Replace return with 'if' expression" drops return label
• KT-30426 Don't preserve extra line when adding remaining branches for when
• KT-30433 "Convert member to extension" doesn't update external Kotlin calls
• KT-30117 Kotlin unused import analysis accesses file editor manager model outside UI thread

IDE. Multiplatform

• KT-29918 Outdated Ktor version in Kotlin (JS Client/JVM Server) multiplatform project generated via New Project Wizard

IDE. Navigation

• KT-26924 Overriding Methods list has more values than it should be in case of inline class
• KT-28661 "Is implemented in" gutter icon shows duplicate function implementations in inline classes
• KT-28838 Group by file structure doesn't work for text search in Kotlin

IDE. Refactorings

• KT-27602 Kotlin property renaming change target name several times during rename making it hard to process it by reference handlers
• KT-29062 Extract Superclass refactoring throws Exception if sourceRoots.size() <= 1
• KT-29796 Label rename refactoring does not work on label usage

IDE. Scratch

• KT-23985 Allow to run Kotlin Worksheet without module classpath
• KT-27955 Interactive mode for Kotlin Scratch files
• KT-28958 Exception "Read access is allowed from event dispatch thread or inside read-action only" when running a scratch file with "Use REPL" and "Make before Run" enabled
• KT-30200 "java.lang.Throwable: Couldn't find expression with start line ..." on edition of a scratch file during its execution with interactive mode enabled

IDE. Script

• KT-29770 IntelliJ IDEA makes too many requests for the classpath of a Gradle Kotlin build script
• KT-29893 IDE is frozen during project configuration because of ScriptTemplatesFromDependenciesProvider
• KT-30146 Preferences from Kotlin scripting section reset to default after project reopening

IDE. Tests Support

• KT-25956 With failed test function class gutter icon is "failure", but function icon is "success"

IDE. Wizards

• KT-17829 Please unify naming of Kotlin projects and frameworks for JVM
• KT-28941 Tip of the day: obsolete project types from "New project wizard"

Libraries

• KT-27108 .toDouble() and .toFloat() conversions for unsigned types
• KT-29520 Random.Default cannot be used asJavaRandom
• KT-30109 Documentation for Result.onSuccess and Result.onFailure are flipped around
• KT-26378 'contains' overloads for unsigned integer ranges with other unsigned integer types
• KT-26410 High-order function overloads for unsigned arrays
• KT-27262 Binary search for specialized arrays of unsigned integers
• KT-28339 Add fill extension function for unsigned primitive arrays
• KT-28397 UByteArray plus UByteArray = List
• KT-28779 Implement method sum() for arrays of unsigned primitives
• KT-29151 Documentation for CharSequence.take() & String.take() shows examples of Iterable.take()
• KT-30035 add max/maxOf/min/minOf for unsigned types
• KT-30051 elementAt extension function of Array/PrimitiveAray/UnsignedArray does not throw IndexOutOfBoundException on incorrect index (JS only)
• KT-30141 JS: document Array.get behavior

Tools. CLI

• KT-26240 Support JVM bytecode targets 9, 10, 11, 12

Tools. Gradle

• KT-12295 Gradle IC: Compile error leads to non-incremental build
• KT-12700 Add a way to diagnose IC problems
• KT-26275 Check new MPP IC
• KT-27885 Drop support for Gradle 3.x and earlier
• KT-27886 Drop support for Android Gradle plugin 2.x
• KT-28552 Gradle 4.7 import fails on Kotlin/mpp projects with Java11
• KT-29275 Drop support for Gradle 4.0
• KT-29758 Gradle build failed with exception on publication of a multiplatform library with Gradle metadata enabled: org.jetbrains.kotlin.gradle.plugin.mpp.HierarchyAttributeContainer cannot be cast to org.gradle.api.internal.attributes.AttributeContainerInternal
• KT-29966 Fix inter-project IC with new MPP for JS/JVM targets
• KT-27059 Ensure a dependency on the multiplatform project in the POM when publishing a single-platform module with the maven plugin
• KT-29971 ConcurrentModificationException in Kotlin Gradle plugin (GradleCompilerRunner.buildModulesInfo)
• KT-21030 Automatically detect java 1.8 sources in kotlin-android gradle plugin
• KT-27675 Enable Kapt build cache by default
• KT-27714 Kotlin MPP Android targets don't have their attributes copied to the configurations of the compilations
• KT-29761 Inter-project IC does not work for kaptGenerateStubs* tasks on Android
• KT-29823 Update 'org.gradle.usage' attribute rules to support the 'JAVA_API_JARS' value
• KT-29964 A universal Gradle DSL way of configuring all compilations of all targets doesn't work for Android target of a multiplatform project
• KT-30276 Warn if the Kotlin Gradle plugin is loaded multiple times
• KT-30322 Memory leak in CompilationSourceSetUtil
• KT-30492 Classes not removed for out/in process compilation

Tools. J2K

• KT-29713 java.lang.IllegalStateException at converting @RestController java file to Kotlin file

Tools. JPS

• KT-30137 Deadlock during concurrent classloading

Tools. Maven

• KT-29251 NSME: MavenProjectsManager.scheduleArtifactsDownloading() at KotlinMavenImporter.scheduleDownloadStdlibSources()

Tools. REPL

• KT-19276 Console spam when opening idea-community project in debug IDEA

Tools. Scripts

• KT-29296 Script evaluation - impossible to set base classloader to null
• KT-27051 Support dynamic versions in @file:DependsOn
• KT-27815 Compiler options in the scripting compilation configuration are ignored on compilation/evaluation
• KT-28593 Idea tries to associate file type with the script definition discovery file
• KT-29319 scripts default jvmTarget causes inlining problems - default should be 1.8
• KT-29741 KJvmCompiledScript can not be deserialized KJvmCompiledModule if it's null
• KT-30210 Coroutines in main.kts crash with NoSuchMethodError because kotlin-main-kts.jar has embedded coroutines

Tools. kapt

• KT-26977 kapt plugin applied in platform.jvm module preventing visibility of common code
• KT-27506 Kapt error "no interface expected here" in class implementing interface with secondary constructor
• KT-28220 kapt can generate invalid stub files for imports of enum constants
• KT-28306 Cannot extend an generic interface with function body while using kapt and correctErrorTypes in Kotlin 1.3
• KT-23880 Kapt: Support incremental annotation processors
• KT-29302 Java classes doesn't resolve Kotlin classes when kapt.use.worker.api = true
• KT-30163 Kapt: Javadoc in Java source model mangled (leading asterisks are preserved)