JetBrains/kotlin v1.5.0-M2

Kotlin 1.5.0-M2

on GitHub

Changelog

Compiler

New Features

• KT-30222 Support JVM target version selection in Kotlin bytecode tool window
• KT-41884 Support 'file' target for JvmSynthetic annotation
• KT-44278 Generate SAM-converted lambdas and function references using 'invokedynamic' on JDK 1.8+

Performance Improvements

• KT-26060 Support a compiler mode to compile lambda expressions using invokedynamic instruction
• KT-42621 Kotlin binary size considerably larger for code extensively using stream API

Fixes

• KT-20306 Make 'when' over an 'expect' enum class non-exhaustive
• KT-20869 kotlin.jvm.internal.DefaultConstructorMarker should be public
• KT-26592 Do not generate private suspend functions as synthetic package-private
• KT-38100 Support local delegated properties (not inlined) in new JVM default modes
• KT-40392 Deprecate JvmDefault annotation and old -Xjvm-default modes
• KT-41758 Deprecate kotlin.Metadata.bytecodeVersion and avoid using it in the compiler
• KT-42092 JVM / IR: "AnalyzerException: Argument 1: expected R, but found J" when trying to add to ArrayList the result of a function applied to int
• KT-42321 JVM IR: do not cast integer value based on the type of a literal receiver of an operator call
• KT-42404 "Supertypes of the following classes cannot be resolved" in Rider project
• KT-42472 No TYPE_INFERENCE_UPPER_BOUND_VIOLATED for Delegated Properties do not check types (in Kotlin 1.4.10)
• KT-43167 JVM IR, serialization: "No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER" with data class containing property defined in body
• KT-43303 NI: False negative TYPE_INFERENCE_UPPER_BOUND_VIOLATED when inferred type argument is not a subtype of type parameter upper bound
• KT-44368 "IllegalStateException: Error type encountered" when inlining 'invoke' operator without enough information on type variable
• KT-44412 JVM IR backend fails to compile break in condition of do while
• KT-44471 Fix failing script tests after switching to 1.5
• KT-44474 Compiler expects sealed type inheritors from platform specific source-sets in when expression in common source-set
• KT-44483 JVM IR: CCE on calling generic vararg function reference with Array expected type
• KT-44550 KotlinBinaryClassCache leaks Kotlin plugin classloader on plugin unload
• KT-44546 NI: changed variable fixation order (that can lead to changed resolution)
• KT-44583 "Supertypes of the following classes cannot be resolved" error message gives no context
• KT-44627 JVM IR: ACCIDENTAL_OVERRIDE when overriding a generic field where the type parameter has a primitive bound
• KT-44703 JVM / IR: "IllegalStateException: Unhandled special name in mangledNameFor" caused by a reference to inline class inside interface's companion with lazy initialization
• KT-44714 Debugger / Coroutines: Local variables are trimmed out too aggressively
• KT-44722 JVM IR: ClassCastException with inline class, let and bound function reference
• KT-44726 JVM IR: Incorrect KType nullability for platform type reified as non-null
• KT-44798 JVM IR: Inherited platform declarations clash for class implementing both List and Set
• KT-44801 1.4.30 JVM IR: Unbound symbols not allowed with anonymous object
• KT-44803 FIR bootstrap: incorrect nullability is set for type alias-based type
• KT-44827 Non-existing outer class is written in anonymous class for SAM wrapper in inline lambda with capture
• KT-44878 JVM_IR: "IllegalStateException: Unexpected types" when checking non-nullable variable is in range between nullable ones with smart-cast
• KT-44926 MPP: Actual typealias to compiled inline class incompatible with expect inline class
• KT-44974 LambdaConversionException in case of SAM-converted captuing extension lambda
• KT-45008 JVM IR: hashCode is generated as invokeinterface if smart cast to interface is present
• KT-45011 JVM / IR: "AssertionError: Unbound symbols not allowed"
• KT-45022 IR: "AssertionError: Undefined variable referenced" from psi2ir caused by plusAssign operator of object
• KT-45064 JVM IR: "java.lang.AssertionError: SyntheticAccessorLowering should not attempt to modify other files!" with member reference to property in another file with private setter
• KT-45069 JVM / IR: New SAM conversions mode fails when converting from Unit to Any
• KT-45131 JVM / IR: "RuntimeException: Lambda, SAM or anonymous object should have only one constructor" caused by inline class that type cast to reified type parameter inside lambda in inline function
• KT-45243 "IllegalStateException: Lambdas shouldn't be visited by ESExpressionVisitor" caused by lambda inside kotlin.test.assertNotNull
• KT-45259 JVM: ClassCastException caused by Result as lambda parameter type
• KT-45292 AssertionError with recursive inline extension property
• KT-45300 Deprecate super calls in public-api inline functions
• KT-45409 Rename jspecify annotations’ package and default not null annotation

IDE

• KT-44487 MPP, IDE: No error in IDE when sealed class inheritor from common source-set is not used in exhaustive when expression in platform source-set
• KT-45254 Highlighting for files with certain errors appears only on second opening

IDE. Decompiler, Indexing, Stubs

• KT-43699 IDE: Unresolved extension method from Java code for simple class with typealias and generics (IllegalStateException: Unknown type parameter)
• KT-44756 Infinite "UpToDateStubIndexMismatch: PSI and index do not match." with IDEA 2021.1 EAP upon attempt to open "org.gradle.configurationcache" even they seem to be the same

IDE. Gradle Integration

• KT-37127 Implement precise importing of platforms of root source sets (commonMain/commonTest) when hierarchical multiplatform support is enabled

IDE. Misc

• KT-44675 Incorrect reference to resource into 202 plugin

IDE. Refactorings

• KT-44839 Sealed interfaces: move refactoring warnings works with "more freedom for sealed classes" rules for language level < 1.5

IDE. Script

• KT-43288 Allow push notifications about script configuration /dependencies changes via the ScriptDefinitionsProvider EP

JavaScript

• KT-39272 KJS / IR: Can't use javascript keywords as JsName
• KT-41650 JS IR BE: default should be a reserved identifier
• KT-44433 KJS IR: support function interfaces with suspend member
• KT-45059 KJS / IR: Add possibility for runtime diagnostics of DCE result

Libraries

• KT-12109 Add stdlib method that combines mapNotNull() and first/firstOrNull()
• KT-26234 Floored division and remainder function for numeric types
• KT-32996 kotlin.test: add assertContentEquals for comparing content of arrays, iterables, sequences
• KT-42071 Strict version of String.toBoolean()
• KT-42720 Kotlin ArrayDeque on JVM: provide optimized toArray method
• KT-42840 Commonize and generalize String.contentEquals that is currently JVM-only
• KT-44369 Commonize Char.titlecaseChar() and Char.titlecase() that are currently JVM-only
• KT-44783 Add IS_VALUE flag for value classes to kotlinx-metadata-jvm
• KT-44815 Remove kotlin-annotations-android and JVM compiler support for @ParameterName/@DefaultValue/@defaultnull
• KT-45213 Update Unicode version used in K/N for Char and String case conversion functions

Middle-end. IR

• KT-45170 IR: "AssertionError: Single expression value for GET_OBJECT" caused by inc operator of field inside scope function inside object

Native

• KT-44295 1.4.21 Kotlin native ndk compiler crash
• KT-44774 ld fails with CALL16 reloc at 0x48f00 not against global symbol (Linux MIPS)

Native. C and ObjC Import

• KT-44824 cinterop tool no longer appends .klib to produced klibs

Native. ObjC Export

• KT-44549 In the Xcode debug session, call stack is missing a frame when the iOS app fails

Native. Platforms

• KT-45094 Fail to compile Kotlin Native sources under Oracle Linux 7

Reflection

• KT-44594 Avoid using unnecessary array types reflection in kotlin-reflect
• KT-44782 Add KClass.isValue to kotlin-reflect

Tools. CLI

• KT-45566 JDK 16 - e: java.lang.NoClassDefFoundError: Could not initialize class org.jetbrains.kotlin.com.intellij.pom.java.LanguageLevel

Tools. Gradle

• KT-44361 Gradle: deprecate options includeRuntime, noStdlib, noReflect
• KT-44834 Gradle Kotlin DSL: Add languageSettings configuration lambda without apply call

Tools. Gradle. JS

• KT-45574 Sync Kotlin/JS compile tasks into one folder (build/js/packages//kotlin)

Tools. JPS

• KT-44644 Mark all @JvmMultifileClass parts compiled in the previous round as dirty in the JPS plugin, similarly to how it’s done in the Gradle plugin

Tools. Scripts

• KT-45194 KT: Generate Kotlin Entities script: it doesn't work
• KT-44580 Scripts: Unable to set new file annotation hooks after first snippet compilation

Tools. kapt

• KT-45168 KAPT: Java stubs generated for Kotlin files generated by annotation processors

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