CHANGELOG

1.4.30-RC

Info about particular features

• JVM IR backend reaches Beta
• Inline classes improvements
• JVM records preview with -language-version 1.5 and -Xjvm-enable-preview
• Sealed interfaces preview with -language-version 1.5

New Features

• KT-41265 Support noarg compiler plugin for JVM IR
• KT-43592 Promote JVM IR compiler backend to Beta
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-44021 Enable JVM IR backend by default in 1.5

Fixes

• KT-11454 Load annotations on TYPE_USE/TYPE_PARAMETER positions from Java class-files
• KT-11732 Verify error for generic interface method invocation with default parameters
• KT-14612 "ISE: Recursive call in a lazy value" during processing of a (weakly) recursive type alias
• KT-18344 Upper bound of a typealias type parameter is not reported correctly if it contains the typealias itself
• KT-18768 @NotNull annotation from Java does not work with varargs
• KT-20548 java.lang.IllegalStateException: Illegal class container on simple Java code parsing
• KT-23816 Inline classes: constants and annotations
• KT-24158 AE: No receiver found on incomplete code with $-signs
• KT-24392 Nullability of Java arrays is read incorrectly if @nullable annotation has both targets TYPE_USE and VALUE_PARAMETER
• KT-29735 KNPE at KtEnumEntrySuperclassReferenceExpression.getReferencedElement with explicit type argument inside enum member constructor
• KT-31389 ClassFormatError with companion object in annotation with @JvmStatic
• KT-31907 ISE: UNIT_EXPECTED_TYPE on parsing array literal inside lambda with Unit return type
• KT-36399 Gradually support TYPE_USE nullability annotations read from class-files
• KT-41163 Double wrapped value in Result class after map operation
• KT-41284 Spring CGLIB proxies break auto-generated data class componentN and copy methods when using JVM IR
• KT-41911 JVM IR: nested big-arity function calls are not lowered
• KT-42001 Cannot resolve symbol: AssertionError: Module <sdk 1.8> is not contained in his own dependencies
• KT-42036 IR: "AssertionError: TypeAliasDescriptor expected: deserialized class Nothing" when referencing typealias with @UnsafeVariance
• KT-42530 "AssertionError: No type for resolved lambda argument" on attempting to assign a Pair to a couple of values in a scratch file
• KT-42622 NI: IllegalStateException for if expression with method reference inside flow
• KT-43051 JVM IR: extraneous methods overridding default (Java 8) collection methods in inline class that extends MutableList
• KT-43067 Inner class declaration inside inline class should be prohibited
• KT-43225 Confusing message of warning NULLABLE_TYPE_PARAMETER_AGAINST_NOT_NULL_TYPE_PARAMETER
• KT-43459 JVM_IR. Wrong signature for synthetic $annotations method for extension property on nullable primitive
• KT-43478 NI: "IndexOutOfBoundsException: Index: 3, Size: 3" caused by is check with raw type inside if condition with when inside
• KT-43519 JVM_IR. External functions generated differently in multi file facades
• KT-43524 JVM_IR. Missed deprecation flag on companion @JvmStatic property accessor
• KT-43536 JVM IR: IllegalStateException is not caught by runCatching under Deferred.await() with kotlinx.coroutines
• KT-43587 Invalid default parameter value in expect actual declaration on jvm
• KT-43630 "AssertionError: Number of arguments should not be less than number of parameters" during capturing intersection raw type with star projection
• KT-43698 NoSuchMethodError for inline class implementing interface with @JvmDefault methods, -Xjvm-default=enable
• KT-43741 Report error on inline class implementing 'kotlin.Cloneable'
• KT-43845 org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Failed to generate expression: KtBlockExpression
• KT-43956 NI: "Error type encountered – UninferredParameterTypeConstructor" on "try" and other constructs with code block as a value
• KT-44055 Left uninferred type parameter for callable references inside special calls
• KT-44113 Compiler frontend exception: Number of arguments should not be less than number of parameters, but: parameters=2, args=1
• KT-44145 No highlighting for not initialized base constructor and NoSuchMethodError in Android plugin

IDE

New Features

• KT-44075 Sealed interfaces: New Kotlin Class/File menu update

Fixes

• KT-29454 Light class with unexpected name when using obfuscated library
• KT-42194 OOME: Java heap space from incremental compilation
• KT-44116 Add language version 1.5 to the compiler configuration preferences

IDE. Android

IDE. Completion

• KT-44016 Code completion: support for "sealed interface"

IDE. Gradle. Script

• KT-39105 AE “JvmBuiltins has not been initialized properly” after creating new Gradle/Kotlin-based project via old Project Wizard

IDE. Inspections and Intentions

New Features

• KT-44017 Sealed interfaces: Java side Inspection "implementation of Kotlin sealed interface is forbidden"
• KT-43941 Sealed interfaces: intention to extend class/interface

IDE. Misc

• KT-44018 Sealed interfaces: IDE side implementation for hierarchy provider

IDE. Multiplatform

• KT-40814 MISSING_DEPENDENCY_CLASS when consuming native-shared library in a source-set with fewer targets than library has

IDE. Run Configurations

• KT-34535 Unable to run common tests on Android via gutter icon in a multiplatform project

IDE. Scratch

• KT-25038 Scratch: Destructuring declaration produces an unresolved reference

IDE. Script

• KT-44117 IDE / Scripts: custom kotlin script definitions aren't loaded

JavaScript

Fixes

• KT-41076 KJS / IR: "AssertionError: Assertion failed" caused by overridden extensiion function in child class
• KT-42357 KotlinJS - external class constructor with vararg does not correctly handle spread operator.
• KT-43212 JS IR: support init blocks inside inline classes
• KT-43901 Call to enum values() method from enum companion object leads to non-initialized enum instances

Libraries

• KT-41278 map.entries.contains can return false if the argument is not MutableEntry

Middle-end. IR

• KT-41765 [Native/IR] Could not resolveFakeOverride()
• KT-42054 Psi2ir: "RuntimeException: IrSimpleFunctionSymbolImpl is already bound" when using result of function with overload resolution by lambda return type

Native

• KT-44271 [Kotlin/Native] Incorrect linking when targeting linux_x64 from mingw_x64 host
• KT-44219 1.4.30-M1: Non-reified type parameters with recursive bounds are not supported yet

Native. ObjC Export

• KT-43599 K/N: Unbound symbols not allowed

Native. Stdlib

• KT-42172 Kotlin/Native: StableRef.dispose race condition on Kotlin deinitRuntime
• KT-42482 Kotlin subclasses of Obj-C classes are incompatible with ISA swizzling (it causes crashes)

Tools. CLI

• KT-43294 Support -no-stdlib option for the kotlin runner

Tools. Compiler Plugins

• KT-43725 Prohibit inner and local classes in kotlin-noarg

Tools. Gradle

• KT-43740 Gradle out-of-process runner fails with unclear diagnostics if build directory does not exist
• KT-43895 Fix cacheability warnings for the Kotlin plugins

Tools. Gradle. JS

• KT-43668 PackageJson task use file dependencies as is (files and directories), but only files necessary
• KT-43793 nodeArgs in NodeJsExec task
• KT-43842 KJS: Invalid output.library support for null value
• KT-44104 KJS / Gradle: An ability to pass jvm args to K2JSDce process

Tools. Gradle. Multiplatform

• KT-44298 Kotlin 1.4.20+ MPP "root" module publication does not include the source JAR that used to be published in the -metadata modules

Tools. Incremental Compile

• KT-42937 another compilation fail (problem with compilation caches?)

Tools. Kapt

• KT-44130 KAPT changes field order in 1.4.30-M1

Tools. Scripts

• KT-43534 Allow running "main.kts" script that does not end in a "main.kts" filename (would allow kotlin scripting on GitHub Actions)
• KT-43176 NoSuchMethodError: 'int Script.access$getAValue$p(Script) for not-inlined functions
• KT-43294 Support -no-stdlib option for the kotlin runner

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