Kotlin 1.8.0 released, due to a bug at Modrinth, the release notes are currently not available here

<h2>Changelog</h2>
<h3>Compiler</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55357" rel="nofollow"><code>KT-55357</code></a> IllegalStateException when reading a class that delegates to a Java class with a definitely-not-null type with a flexible upper bound</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55068" rel="nofollow"><code>KT-55068</code></a> Kotlin Gradle DSL: No mapping for symbol: VALUE_PARAMETER SCRIPT_IMPLICIT_RECEIVER on JVM IR backend</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51284" rel="nofollow"><code>KT-51284</code></a> SAM conversion doesn't work if method has context receivers</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55065" rel="nofollow"><code>KT-55065</code></a> Kotlin Gradle DSL: Reflection cannot find class data for lambda, produced by JVM IR backend</li>
</ul>
<h3>Tools. Compiler plugins. Serialization</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55340" rel="nofollow"><code>KT-55340</code></a> Argument for kotlinx.serialization.UseSerializers does not implement KSerializer or does not provide serializer for concrete type</li>
</ul>
<h3>Tools. Gradle</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55334" rel="nofollow"><code>KT-55334</code></a> kaptGenerateStubs passes wrong android variant module names to compiler</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55255" rel="nofollow"><code>KT-55255</code></a> Gradle: stdlib version alignment fails build on dynamic stdlib version.</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55363" rel="nofollow"><code>KT-55363</code></a> [K1.8.0-Beta] Command line parsing treats plugin parameters as source files</li>
</ul>
</table>

<div data-pjax="true" data-test-selector="body-content" data-view-component="true" class="markdown-body my-3"><h2>Changelog</h2>
<h3>Compiler</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55108" rel="nofollow"><code>KT-55108</code></a> IR interpreter: Error occurred while optimizing an expression: VARARG</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54884" rel="nofollow"><code>KT-54884</code></a> "StackOverflowError: null" caused by Enum constant name in constructor of the same Enum constant</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55013" rel="nofollow"><code>KT-55013</code></a> State checker use-after-free with XCode 14.1</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54275" rel="nofollow"><code>KT-54275</code></a> K2: "IllegalArgumentException: KtParameter is not a subtype of class KtAnnotationEntry for factory REPEATED_ANNOTATION"</li>
</ul>
<h3>JavaScript</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55097" rel="nofollow"><code>KT-55097</code></a> KJS / IR + IC: Using an internal function from a friend module throws an unbound symbol exception</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54934" rel="nofollow"><code>KT-54934</code></a> KJS / IR + IC: Suspend abstract function stubs are generated with unstable lowered ic signatures</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54895" rel="nofollow"><code>KT-54895</code></a> KJS / IR + IC: broken cross module references for function default param wrappers</li>
</ul>
<h3>Language Design</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48516" rel="nofollow"><code>KT-48516</code></a> Forbid <code>@Synchronized</code> annotation on suspend functions</li>
</ul>
<h3>Libraries</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54835" rel="nofollow"><code>KT-54835</code></a> Document that Iterable.all(emptyCollection) returns TRUE.</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54168" rel="nofollow"><code>KT-54168</code></a> Expand on natural order in comparator docs</li>
</ul>
<h3>Native. Platform Libraries</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54225" rel="nofollow"><code>KT-54225</code></a> Native: update to Xcode 14.1</li>
</ul>
<h3>Tools. Compiler plugins. Serialization</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55296" rel="nofollow"><code>KT-55296</code></a> Improve exceptions in serialization plugin</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55180" rel="nofollow"><code>KT-55180</code></a> KJS: regression in serialization for Kotlin 1.8.0-beta</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54878" rel="nofollow"><code>KT-54878</code></a> JVM/IR: java.lang.ClassCastException: class org.jetbrains.kotlin.ir.types.impl.IrStarProjectionImpl cannot be cast to class org.jetbrains.kotlin.ir.types.IrTypeProjection on serializer&lt;Box&lt;*&gt;&gt;()</li>
</ul>
<h3>Tools. Gradle</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50115" rel="nofollow"><code>KT-50115</code></a> Setting toolchain via Java extension does not configure 'kotlinOptions.jvmTarget' value when Kotlin compilation tasks are created eagerly</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55222" rel="nofollow"><code>KT-55222</code></a> Migrate AndroidDependencyResolver to the new Gradle API</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54993" rel="nofollow"><code>KT-54993</code></a> Raise kotlin.jvm.target.validation.mode check default level to error when build is running on Gradle 8+</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54995" rel="nofollow"><code>KT-54995</code></a> [1.8.0-Beta] compileAppleMainKotlinMetadata fails on default parameters with <code>No value passed for parameter 'mustExist'</code></li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45335" rel="nofollow"><code>KT-45335</code></a> kotlinOptions.jvmTarget conflicts with Gradle variants</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55019" rel="nofollow"><code>KT-55019</code></a> Gradle sync: UnknownConfigurationException when adding implementation dependencies to a Kotlin with Java compilation</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55004" rel="nofollow"><code>KT-55004</code></a> jvmTarget value is ignored by depending modules if a task "UsesKotlinJavaToolchain" is configured for all project modules using allProjects {}</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54888" rel="nofollow"><code>KT-54888</code></a> Add Gradle property to suppress kotlinOptions.freeCompilerArgs modification on execution phase</li>
</ul>
<h3>Tools. Gradle. JS</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-55099" rel="nofollow"><code>KT-55099</code></a> K/JS: Second declaration of JS target without compiler type report warning incorrectly</li>
</ul>
<h3>Tools. Gradle. Multiplatform</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54634" rel="nofollow"><code>KT-54634</code></a> MPP: Test Failure causes: <code>KotlinJvmTest$Executor$execute$1 does not define failure</code></li>
</ul>
<h3>Tools. Incremental Compile</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54144" rel="nofollow"><code>KT-54144</code></a> New IC: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing an inline function with custom JvmName</li>
</ul>
</div>

<h2>1.8.0-Beta</h2>
<h3>Android</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53013" rel="nofollow"><code>KT-53013</code></a> Increase AGP compile version in KGP to 4.1.3</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53709" rel="nofollow"><code>KT-53709</code></a> MPP, Android SSL2: Conflicting warnings for <code>androidTest/kotlin</code> source set folder</li>
</ul>
<h3>Backend. Native. Debug</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53561" rel="nofollow"><code>KT-53561</code></a> Invalid LLVM module: "inlinable function call in a function with debug info must have a !dbg location"</li>
</ul>
<h3>Compiler</h3>
<h4>New Features</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53916" rel="nofollow"><code>KT-53916</code></a> Support Xcode 14 and new Objective-C frameworks in Kotlin/Native compiler</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54460" rel="nofollow"><code>KT-54460</code></a> Implementation of non-local break and continue</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-32208" rel="nofollow"><code>KT-32208</code></a> Generate method annotations into bytecode for suspend lambdas (on invokeSuspend)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53438" rel="nofollow"><code>KT-53438</code></a> Introduce a way to get SourceDebugExtension attribute value via JVMTI for profiler and coverage</li>
</ul>
<h4>Performance Improvements</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53347" rel="nofollow"><code>KT-53347</code></a> Get rid of excess allocations in parser</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53689" rel="nofollow"><code>KT-53689</code></a> JVM: Optimize equality on class literals</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52974" rel="nofollow"><code>KT-52974</code></a> "IllegalStateException: Symbol with IrSimpleFunctionSymbolImpl is unbound" compiling native targets of MPP project</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48678" rel="nofollow"><code>KT-48678</code></a> Coroutine debugger: disable "was optimised out" compiler feature</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54745" rel="nofollow"><code>KT-54745</code></a> Restore KtToken constructors without tokenId parameter to preserve back compatibility</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54650" rel="nofollow"><code>KT-54650</code></a> Binary incompatible ABI change in Kotlin 1.7.20</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52786" rel="nofollow"><code>KT-52786</code></a> Frontend / K2: IndexOutOfBoundsException when opting in to K2</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54004" rel="nofollow"><code>KT-54004</code></a> Builder type inference does not work correctly with variable assignment and breaks run-time</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54581" rel="nofollow"><code>KT-54581</code></a> JVM: "VerifyError: Bad type on operand stack" with generic inline function and <code>when</code> inside try-catch block</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52913" rel="nofollow"><code>KT-52913</code></a> JVM / IR: "IllegalArgumentException: Inline class types should have the same representation" when trying to down cast cast a value class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54600" rel="nofollow"><code>KT-54600</code></a> NPE on passing nullable Kotlin lambda as Java's generic SAM interface with <code>super</code> type bound</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54463" rel="nofollow"><code>KT-54463</code></a> Delegating to a field with a platform type causes java.lang.NoSuchFieldError: value$delegate</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54509" rel="nofollow"><code>KT-54509</code></a> Ir Interpreter: unable to evaluate string concatenation with "this" as argument</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54393" rel="nofollow"><code>KT-54393</code></a> Change in behavior from 1.7.10 to 1.7.20 for java field override.</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54615" rel="nofollow"><code>KT-54615</code></a> JVM: Internal error in file lowering: java.lang.AssertionError: Error occurred while optimizing an expression</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53146" rel="nofollow"><code>KT-53146</code></a> JVM IR: unnecessary checkcast of null leads to NoClassDefFoundError if the type isn't available at runtime</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51868" rel="nofollow"><code>KT-51868</code></a> JVM / IR: Inconsistent behaviour between lambda expression and SAM interface conversion for the same interface</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53947" rel="nofollow"><code>KT-53947</code></a> IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53712" rel="nofollow"><code>KT-53712</code></a> Add mode to prevent generating JVM 1.8+ annotation targets (TYPE_USE, TYPE_PARAMETER)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48532" rel="nofollow"><code>KT-48532</code></a> Remove old JVM backend</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-35187" rel="nofollow"><code>KT-35187</code></a> NullPointerException on compiling suspend inline fun with typealias to suspend function type</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54275" rel="nofollow"><code>KT-54275</code></a> K2: "IllegalArgumentException: KtParameter is not a subtype of class KtAnnotationEntry for factory REPEATED_ANNOTATION"</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-47475" rel="nofollow"><code>KT-47475</code></a> "IncompatibleClassChangeError: disagree on InnerClasses attribute": cross-module inlined WhenMappings has mismatched InnerClasses</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53197" rel="nofollow"><code>KT-53197</code></a> K2: 'init' hides member of supertype 'UIComponent' and needs 'override' modifier</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53867" rel="nofollow"><code>KT-53867</code></a> K2: @JvmRecord does not compile to a java record</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53964" rel="nofollow"><code>KT-53964</code></a> K2 is unable to work with Java records</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53349" rel="nofollow"><code>KT-53349</code></a> K2: TYPE_MISMATCH caused by non-local return</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54100" rel="nofollow"><code>KT-54100</code></a> "Type variable TypeVariable(P) should not be fixed" crash in code with errors</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49017" rel="nofollow"><code>KT-49017</code></a> Forbid usages of super or super if in fact it accesses an abstract member</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54192" rel="nofollow"><code>KT-54192</code></a> Warn about unsupported feature on generic inline class parameters</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53723" rel="nofollow"><code>KT-53723</code></a> Friend modules aren't getting passed to cache build during box tests</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53873" rel="nofollow"><code>KT-53873</code></a> K2: Duplicated diagnostics reported from user type ref checkers</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50909" rel="nofollow"><code>KT-50909</code></a> "VerifyError: Bad type on operand stack" caused by smartcasting for nullable inline class property in class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48031" rel="nofollow"><code>KT-48031</code></a> "IllegalStateException: Type variable TypeVariable(T) should not be fixed!"</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54115" rel="nofollow"><code>KT-54115</code></a> Restore Psi2IrTranslator constructor from 1.7.20</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53908" rel="nofollow"><code>KT-53908</code></a> K2: Self-referencing generics in Java class causes New Inference Error (IE: class Foo&lt;T extends Foo&gt;)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53193" rel="nofollow"><code>KT-53193</code></a> K2: compile error on project that compiles fine with normal 1.7.10</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53953" rel="nofollow"><code>KT-53953</code></a> Forbid usages of super or super if in fact it accesses an abstract member</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-47473" rel="nofollow"><code>KT-47473</code></a> NI: Missed UPPER_BOUND_VIOLATED diagnostics if use type aliases with type parameters</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54049" rel="nofollow"><code>KT-54049</code></a> K2: false positive MANY_IMPL_MEMBER_NOT_IMPLEMENTED</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-30054" rel="nofollow"><code>KT-30054</code></a> Wrong approximation if nullable anonymous object with implemented interface is used</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53751" rel="nofollow"><code>KT-53751</code></a> Postpone IgnoreNullabilityForErasedValueParameters feature</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53324" rel="nofollow"><code>KT-53324</code></a> Implement Enum.entries lowering on K/N</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-44441" rel="nofollow"><code>KT-44441</code></a> K2: report redeclaration error if there is a Java class with the same name as the Kotlin class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53493" rel="nofollow"><code>KT-53493</code></a> K2: <code>val on function parameter</code> counts as just warning</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53435" rel="nofollow"><code>KT-53435</code></a> K2: "IllegalArgumentException: class KtValueArgument is not a subtype of class KtExpression for factory ANNOTATION_ARGUMENT_MUST_BE_CONST" if string in nested annotation is concatenated</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52927" rel="nofollow"><code>KT-52927</code></a> AssertionError: LambdaKotlinCallArgumentImpl</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53922" rel="nofollow"><code>KT-53922</code></a> Make Enum.entries unstable feature to poison binaries</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53783" rel="nofollow"><code>KT-53783</code></a> Exception during psi2ir when declaring expect data object</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-41670" rel="nofollow"><code>KT-41670</code></a> JVM IR: AbstractMethodError when using inheritance for fun interfaces</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53178" rel="nofollow"><code>KT-53178</code></a> K2: implement diagnostics for serialization plugin</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53465" rel="nofollow"><code>KT-53465</code></a> Unnecessary checkcast to array of reified type is not optimized since Kotlin 1.6.20</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52970" rel="nofollow"><code>KT-52970</code></a> Default value constant in companion object works on JVM and JS, but fails on native</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-27936" rel="nofollow"><code>KT-27936</code></a> Write InnerClasses attribute for all class names used in a class file</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53007" rel="nofollow"><code>KT-53007</code></a> JVM: "Bad invokespecial instruction: current class isn't assignable to reference class" when call superclass of outer class method from inner class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53261" rel="nofollow"><code>KT-53261</code></a> Evaluate effect from inline for primitive types</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-39492" rel="nofollow"><code>KT-39492</code></a> Kotlin.Metadata's packageName field cannot be an empty string</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53664" rel="nofollow"><code>KT-53664</code></a> Ir Interpreter: unable to evaluate name of function reference marked with JvmStatic from another module</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52478" rel="nofollow"><code>KT-52478</code></a> [Native] Partial linkage: Building native binary from cached KLIBs fails if one library depends on removed nested callable member from another one</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53667" rel="nofollow"><code>KT-53667</code></a> Compiler crashes on attempt to alloc a string on the stack in new MM</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48822" rel="nofollow"><code>KT-48822</code></a> CompilationException: Back-end (JVM) Internal error: Failed to generate expression: KtProperty - ConcurrentModificationException</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50281" rel="nofollow"><code>KT-50281</code></a> IllegalStateException: unsupported call of reified inlined function</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53480" rel="nofollow"><code>KT-53480</code></a> Internal error in file lowering: java.lang.ClassNotFoundException: com.android.systemui.R$string</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50083" rel="nofollow"><code>KT-50083</code></a> Different error messages in android and JVM (Intrinsics.checkNotNullParameter).</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53270" rel="nofollow"><code>KT-53270</code></a> K1: implement synthetic Enum.entries property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-41017" rel="nofollow"><code>KT-41017</code></a> FIR: should we support smartcast after null check</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52823" rel="nofollow"><code>KT-52823</code></a> Cannot access class Thread.State after upgrading to 1.7 from 1.6.1 using -Xjdk-release=1.8</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53257" rel="nofollow"><code>KT-53257</code></a> FIR: Improper context receiver argument is chosen when there are two extension receiver candidates</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53090" rel="nofollow"><code>KT-53090</code></a> Anonymous function and extension function literals are generated as classes even with -Xlambdas=indy</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53208" rel="nofollow"><code>KT-53208</code></a> K2: Cannot get annotation for default interface method parameter when compiled with <code>-Xuse-k2</code></li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53184" rel="nofollow"><code>KT-53184</code></a> K2: NoSuchMethodError on KProperty1.get() referenced via nullable typealias</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53198" rel="nofollow"><code>KT-53198</code></a> K2: Return type mismatch: expected kotlin/Unit, actual kotlin/Unit?</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53100" rel="nofollow"><code>KT-53100</code></a> Optimization needed: (CONSTANT_PRIMITIVE(x: T?)) =&gt; x</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49875" rel="nofollow"><code>KT-49875</code></a> [FIR] Support infering PRIVATE_TO_THIS visibility</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53024" rel="nofollow"><code>KT-53024</code></a> Refactor FIR renderer to composable architecture</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-29168" rel="nofollow"><code>KT-29168</code></a> Prohibit upper bounds violation with generic typealias using not all type parameters as arguments for underlying type in supertypes</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53148" rel="nofollow"><code>KT-53148</code></a> K1: introduce warning for inline virtual member in enum</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53041" rel="nofollow"><code>KT-53041</code></a> NPE in Kotlin 1.7.0 when using RxJava Maybe.doOnEvent with anonymous parameters</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49847" rel="nofollow"><code>KT-49847</code></a> Devirtualization fails to eliminate boxing in function reference context</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52875" rel="nofollow"><code>KT-52875</code></a> Extension function literal creation with <code>-Xlambdas=indy</code> fails with incorrect arguments</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53072" rel="nofollow"><code>KT-53072</code></a> INVALID_IF_AS_EXPRESSION error isn't shown in the IDE (LV 1.8)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52985" rel="nofollow"><code>KT-52985</code></a> Native: a function with type <code>T?</code> returned a <code>kotlin.Unit</code> instead of <code>null</code></li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52020" rel="nofollow"><code>KT-52020</code></a> FIR warning message includes internal rendering</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50835" rel="nofollow"><code>KT-50835</code></a> Inline functions with suspend lambdas break the tail-call optimization</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54802" rel="nofollow"><code>KT-54802</code></a> "VerifyError: Bad type on operand stack" for inline functions on arrays</li>
</ul>
<h3>IDE</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48773" rel="nofollow"><code>KT-48773</code></a> Investigate the possibility of removing dependency on old JVM backend in light classes</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51101" rel="nofollow"><code>KT-51101</code></a> FIR IDE: Exception on "Show Type Info" action</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51656" rel="nofollow"><code>KT-51656</code></a> FIR IDE: ProgressCancelled exception is masked in the compiler during resolve</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51315" rel="nofollow"><code>KT-51315</code></a> FIR IDE: move out base modules from fe10 plugin to reuse in k2 plugin</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53097" rel="nofollow"><code>KT-53097</code></a> Extract common part of light classes to another module</li>
</ul>
<h3>IDE. Debugger</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51755" rel="nofollow"><code>KT-51755</code></a> Compilation exception with scripting compilation during debug session</li>
</ul>
<h3>IDE. Gradle Integration</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53514" rel="nofollow"><code>KT-53514</code></a> HMPP: False positive for <code>None of the following functions can be called with the arguments supplied.</code> with Enum in common module</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48135" rel="nofollow"><code>KT-48135</code></a> In the IDE import, reuse dependency granular source set KLIBs across multi-project build to avoid duplicate external libraries</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51583" rel="nofollow"><code>KT-51583</code></a> Gradle 7.4+ | SamplesVariantRule interference: Could not resolve all files for configuration ':kotlinKlibCommonizerClasspath'</li>
</ul>
<h3>IDE. Inspections and Intentions</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49643" rel="nofollow"><code>KT-49643</code></a> Intentions: "Implement members" fails when base type function declaration uses unresolved generic types</li>
</ul>
<h3>IDE. Navigation</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51314" rel="nofollow"><code>KT-51314</code></a> FIR IDE: show Kotlin declarations in search symbol</li>
</ul>
<h3>IDE. Script</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54325" rel="nofollow"><code>KT-54325</code></a> .settings.gradle.kts and .init.gradle.kts are reported as standalone scripts</li>
</ul>
<h3>IDE. Tests Support</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50269" rel="nofollow"><code>KT-50269</code></a> FIR IDE: Allow running tests via gutter</li>
</ul>
<h3>JavaScript</h3>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53931" rel="nofollow"><code>KT-53931</code></a> KJS / Gradle: Regression with 1.7.20-RC: ReferenceError: println is not defined</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54520" rel="nofollow"><code>KT-54520</code></a> KJS / IR Allow IdSignature clashes</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54686" rel="nofollow"><code>KT-54686</code></a> KJS / IR: Incorrect generation of signatures when one of argument is nested class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54479" rel="nofollow"><code>KT-54479</code></a> KJS / IR + IC: Adding or removing companion fields leads java.lang.IllegalStateException in the compiler IC infrastructure</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54382" rel="nofollow"><code>KT-54382</code></a> KJS / IR: Wrong type check for inheritors of suspend functions</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54323" rel="nofollow"><code>KT-54323</code></a> KJS / IR + IC: Intrinsics from stdlib may lose their dependencies in incremental rebuild</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53361" rel="nofollow"><code>KT-53361</code></a> KJS / IR: No debug info is generated for in-line js code</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53321" rel="nofollow"><code>KT-53321</code></a> Implement Enum.entries lowering on JS/IR</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53112" rel="nofollow"><code>KT-53112</code></a> KJS IR turn on IC infra by default</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50503" rel="nofollow"><code>KT-50503</code></a> Kotlin/JS: IR + IC: compileTestDevelopmentExecutableKotlinJs fails with ISE: "Could not find library" after removing module dependency</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54120" rel="nofollow"><code>KT-54120</code></a> JS IR + IC: pointless invalidation of dependent code after modifying companions</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54011" rel="nofollow"><code>KT-54011</code></a> JS IR + IC: EnumEntries don't work well when IC is enabled</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54010" rel="nofollow"><code>KT-54010</code></a> JS IR + IC: Force IC cache invalidation after updating language version or features</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53672" rel="nofollow"><code>KT-53672</code></a> KJS / IR: "IndexOutOfBoundsException: Index 0 out of bounds for length 0" caused by function reference to extension function of reified type variable</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-43455" rel="nofollow"><code>KT-43455</code></a> KJS: IR. Incremental compilation problem with unbound symbols</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53539" rel="nofollow"><code>KT-53539</code></a> KJS: Exported class inherited non-exported class shows warning</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53443" rel="nofollow"><code>KT-53443</code></a> KJS/IR: NullPointerException caused by anonymous objects inside lambdas</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52795" rel="nofollow"><code>KT-52795</code></a> K/JS and K/Native IR-validation/compilation errors for a valid kotlin code</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52805" rel="nofollow"><code>KT-52805</code></a> KJS/IR: Invalid call of inline function in <code>also</code> block</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51151" rel="nofollow"><code>KT-51151</code></a> KJS / IR: Wrong overloaded generic method with receiver is called</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52830" rel="nofollow"><code>KT-52830</code></a> KJS/IR: Sourcemap disabling doesn't work</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52968" rel="nofollow"><code>KT-52968</code></a> KJS / IR: Buggy generation of overridden methods</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53063" rel="nofollow"><code>KT-53063</code></a> KJS / IR + IC: undefined cross module reference for implemented interface functions</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51099" rel="nofollow"><code>KT-51099</code></a> KJS / IR + IC: Cache invalidation doesn't check generic class variance annotations (in, out)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51090" rel="nofollow"><code>KT-51090</code></a> KJS / IR + IC: Cache invalidation doesn't check suspend qualifier</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51088" rel="nofollow"><code>KT-51088</code></a> KJS / IR + IC: Cache invalidation doesn't check class qualifiers (data, inline)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51083" rel="nofollow"><code>KT-51083</code></a> KJS / IR + IC: Cache invalidation doesn't check inline function which was non inline initially</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51896" rel="nofollow"><code>KT-51896</code></a> KJS / IR + IC: Cache invalidation doesn't trigger rebuild for fake overridden inline functions</li>
</ul>
<h3>Language Design</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-41886" rel="nofollow"><code>KT-41886</code></a> Ability to require opt-in for interface implementation, but not for usage</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-34943" rel="nofollow"><code>KT-34943</code></a> OVERLOAD_RESOLUTION_AMBIGUITY inconsistent with the equivalent Java code</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49110" rel="nofollow"><code>KT-49110</code></a> Prohibit access to members of companion of enum class from initializers of entries of this enum</li>
</ul>
<h3>Libraries</h3>
<h4>New Features</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-21007" rel="nofollow"><code>KT-21007</code></a> Provide Kotlin OSGI Bundle with extensions for JRE8 (and JRE7)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54082" rel="nofollow"><code>KT-54082</code></a> Comparable and subtractible TimeMarks</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50484" rel="nofollow"><code>KT-50484</code></a> Extensions for java.util.Optional in stdlib</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52928" rel="nofollow"><code>KT-52928</code></a> Provide copyToRecursively and deleteRecursively extension functions for java.nio.file.Path</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52932" rel="nofollow"><code>KT-52932</code></a> Open-ended ranges in the standard library</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49425" rel="nofollow"><code>KT-49425</code></a> Update OptIn documentation to reflect latest design changes</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54005" rel="nofollow"><code>KT-54005</code></a> Allow calling <code>declaringJavaClass</code> on Enum</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52933" rel="nofollow"><code>KT-52933</code></a> rangeUntil members in built-in types</li>
</ul>
<h4>Performance Improvements</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53508" rel="nofollow"><code>KT-53508</code></a> Cache typeOf-related KType instances when kotlin-reflect is used</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51907" rel="nofollow"><code>KT-51907</code></a> Switch JVM target of the standard libraries to 1.8</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53277" rel="nofollow"><code>KT-53277</code></a> Stabilize experimental API for 1.8</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53864" rel="nofollow"><code>KT-53864</code></a> Review deprecations in stdlib for 1.8</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-47707" rel="nofollow"><code>KT-47707</code></a> Remove the system property and the brittle <code>contains</code> optimization code itself</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52336" rel="nofollow"><code>KT-52336</code></a> Different behavior on JVM and Native in stringBuilder.append(charArray, 0, 1)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53927" rel="nofollow"><code>KT-53927</code></a> Remove deprecation from ConcurrentModificationException constructors</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53134" rel="nofollow"><code>KT-53134</code></a> stdlib &gt; object Charsets &gt; not thread safe lazy initialization</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51063" rel="nofollow"><code>KT-51063</code></a> Gradle project with JPS runner: "JUnitException: Failed to parse version" JUnit runner internal error with JUnit</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52908" rel="nofollow"><code>KT-52908</code></a> Native: setUnhandledExceptionHook swallows exceptions</li>
</ul>
<h3>Native</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51043" rel="nofollow"><code>KT-51043</code></a> Kotlin Native: ObjC-Interop: kotlin.ClassCastException: null cannot be cast to kotlin.Function2</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50786" rel="nofollow"><code>KT-50786</code></a> Native: prohibit suspend calls inside autoreleasepool {}</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53346" rel="nofollow"><code>KT-53346</code></a> MPP project with kotlinx-serialization-json:1.4.0-RC is not built</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52834" rel="nofollow"><code>KT-52834</code></a> Implement test infrastructure for K2/Native</li>
</ul>
<h3>Native. C Export</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-36878" rel="nofollow"><code>KT-36878</code></a> Reverse C Interop: incorrect headers generation for primitive unassigned type arrays</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53599" rel="nofollow"><code>KT-53599</code></a> [Reverse C Interop] Provide box/unbox API for unsigned primitive types</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-41904" rel="nofollow"><code>KT-41904</code></a> Kotlin/Native : error: duplicate member for interface and function with the same name</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-42830" rel="nofollow"><code>KT-42830</code></a> [Reverse C Interop] Add API to get value of boxed primitives</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-39496" rel="nofollow"><code>KT-39496</code></a> K/N C: optional unsigned types as function parameters crash the compiler</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-39015" rel="nofollow"><code>KT-39015</code></a> Cannot compile native library with nullable inline class</li>
</ul>
<h3>Native. C and ObjC Import</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54738" rel="nofollow"><code>KT-54738</code></a> Cocoapods cinterop: linking platform.CoreGraphics package</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54001" rel="nofollow"><code>KT-54001</code></a> Kotlin/Native: support header exclusion in cinterop def files</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53151" rel="nofollow"><code>KT-53151</code></a> Native: Custom declarations in .def don't work with modules, only headers</li>
</ul>
<h3>Native. ObjC Export</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53680" rel="nofollow"><code>KT-53680</code></a> Obj-C refinement annotations</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54119" rel="nofollow"><code>KT-54119</code></a> Native: runtime assertion failed due to missing thread state switch</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-42641" rel="nofollow"><code>KT-42641</code></a> Don't export generated component* methods from Kotlin data classes to Obj-C header</li>
</ul>
<h3>Native. Platform Libraries</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-39747" rel="nofollow"><code>KT-39747</code></a> Why is there no WinHttp API in Kotlin/Native's Windows API?</li>
</ul>
<h3>Native. Runtime</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49228" rel="nofollow"><code>KT-49228</code></a> Kotlin/Native: Allow to unset unhandled exception hook</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-27305" rel="nofollow"><code>KT-27305</code></a> Fix <strong>FILE</strong> macro inside <code>RuntimeCheck</code> and <code>RuntimeAssert</code></li>
</ul>
<h3>Native. Runtime. Memory</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54498" rel="nofollow"><code>KT-54498</code></a> Deprecation message of 'FreezingIsDeprecated' is not really helpful</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53182" rel="nofollow"><code>KT-53182</code></a> New memory manager: Unexpected memory usage on IOS</li>
</ul>
<h3>Native. Stdlib</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52429" rel="nofollow"><code>KT-52429</code></a> Small Usability Improvements for Worker API</li>
</ul>
<h3>Reflection</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54611" rel="nofollow"><code>KT-54611</code></a> <code>KTypeImpl</code> does not take into account class loader from the <code>classifier</code> property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48136" rel="nofollow"><code>KT-48136</code></a> Make <code>Reflection.getOrCreateKotlinPackage</code> use cache when <code>kotlin-reflect</code> is used</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50705" rel="nofollow"><code>KT-50705</code></a> Use ClassValue to cache KClass objects in kotlin-reflect</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53454" rel="nofollow"><code>KT-53454</code></a> Properly cache the same class's KClass when it's loaded by multiple classloaders in getOrCreateKotlinClass</li>
</ul>
<h3>Specification</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53646" rel="nofollow"><code>KT-53646</code></a> Incorporate rangeUntil (..&lt;) operator into specification</li>
</ul>
<h3>Tools. CLI</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54116" rel="nofollow"><code>KT-54116</code></a> Add JVM target bytecode version 19</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53278" rel="nofollow"><code>KT-53278</code></a> Support values 6 and 8 for -Xjdk-release</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-46312" rel="nofollow"><code>KT-46312</code></a> CLI: Kotlin runner should use platform class loader to load JDK modules on Java 9+</li>
</ul>
<h3>Tools. Commonizer</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54310" rel="nofollow"><code>KT-54310</code></a> Commonizer fails on 1.8.0-dev K/N distributions</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48576" rel="nofollow"><code>KT-48576</code></a> [Commonizer] platform.posix.pselect not commonized in Ktor</li>
</ul>
<h3>Tools. Compiler Plugins</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-46959" rel="nofollow"><code>KT-46959</code></a> Kotlin Lombok: Support generated builders (<a class="user-mention notranslate" data-hovercard-type="user" data-hovercard-url="/users/builder/hovercard" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://github.com/builder">@builder</a>)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53647" rel="nofollow"><code>KT-53647</code></a> [K2] Unresolved reference compilation error occurs if a field is annotated with @ Singular and has type Iterable&lt;&gt;</li>
</ul>
<h3>Tools. Compiler plugins. Serialization</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53157" rel="nofollow"><code>KT-53157</code></a> Recursion detected in a lazy value under LockBasedStorageManager in kotlinx.serialization</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-49660" rel="nofollow"><code>KT-49660</code></a> kotlinx.serialization: IndexOutOfBoundsException for parameterized sealed class</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-43910" rel="nofollow"><code>KT-43910</code></a> JS IR: Serialization with base class: "IndexOutOfBoundsException: Index 0 out of bounds for length 0"</li>
</ul>
<h3>Tools. Daemon</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52622" rel="nofollow"><code>KT-52622</code></a> Kotlin/JS, Kotlin/Common compilations start Kotlin daemon incompatible with Kotlin/JVM compilation on JDK 8</li>
</ul>
<h3>Tools. Gradle</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54703" rel="nofollow"><code>KT-54703</code></a> Stdlib substitution does not work with JPMS modules</li>
</ul>
<h4>New Features</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53357" rel="nofollow"><code>KT-53357</code></a> Change single build metrics property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-34464" rel="nofollow"><code>KT-34464</code></a> Kotlin build report path not clickable in the IDE</li>
</ul>
<h4>Performance Improvements</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52520" rel="nofollow"><code>KT-52520</code></a> Remove usage of reflection from CompilerArgumentsGradleInput</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53118" rel="nofollow"><code>KT-53118</code></a> Fully up-to-date builds are slower with Kotlin 1.7.0</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54136" rel="nofollow"><code>KT-54136</code></a> Duplicated classes cause build failure if a dependency to kotlin-stdlib specified in an android project</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51923" rel="nofollow"><code>KT-51923</code></a> Improve usability of errors and warnings by being able to click on them</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54439" rel="nofollow"><code>KT-54439</code></a> Project failed to sync Native LaguageSettings to compiler options in afterEvaluate</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54399" rel="nofollow"><code>KT-54399</code></a> Undeprecate 'kotlinOptions' DSL</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54306" rel="nofollow"><code>KT-54306</code></a> Change the naming of newly added Compiler*Options classes and interfaces</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53885" rel="nofollow"><code>KT-53885</code></a> Bump minimal supported Gradle version to 6.8.3</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53773" rel="nofollow"><code>KT-53773</code></a> Protect and system properties can contain sensitive data</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53732" rel="nofollow"><code>KT-53732</code></a> Add custom values limits for build scan reports</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52624" rel="nofollow"><code>KT-52624</code></a> Compatibility with Gradle 7.3 release</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51831" rel="nofollow"><code>KT-51831</code></a> Gradle: remove <code>kotlin.compiler.execution.strategy</code> system property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-51679" rel="nofollow"><code>KT-51679</code></a> Change deprecation level to error for KotlinCompile setClasspath/getClasspath methods</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48843" rel="nofollow"><code>KT-48843</code></a> Add ability to disable Kotlin daemon fallback strategy</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53617" rel="nofollow"><code>KT-53617</code></a> KotlinCompilerExecutionStrategy value is ignored by depending modules if configure once for all project modules using allProjects {}</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53823" rel="nofollow"><code>KT-53823</code></a> Kotlin Gradle Plugin uses deprecated Gradle API: Provider.forUseAtConfigurationTime()</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54142" rel="nofollow"><code>KT-54142</code></a> Increase Kotlin Gradle plugin Gradle target API to 7.5</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50161" rel="nofollow"><code>KT-50161</code></a> Android variant filter breaks KotlinCompile cache compatibility</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54113" rel="nofollow"><code>KT-54113</code></a> LanguageSettings to KotlinNativeLink.toolOptions sync are executed on the wrong context</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54112" rel="nofollow"><code>KT-54112</code></a> Missing target input on KotlinNativeLink task</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45879" rel="nofollow"><code>KT-45879</code></a> Documentation: Wrong kotlin languageVersion "1.6 (EXPERIMENTAL)"</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54103" rel="nofollow"><code>KT-54103</code></a> Remove JvmTarget.JVM_1_6 from generated Gradle compiler type</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50598" rel="nofollow"><code>KT-50598</code></a> MULTIPLE_KOTLIN_PLUGINS_SPECIFIC_PROJECTS_WARNING is only shown on first build</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52209" rel="nofollow"><code>KT-52209</code></a> Corrupted cache and non-incremental build if produce caches "in process" and restore then compiling with kotlin daemon</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-41642" rel="nofollow"><code>KT-41642</code></a> "TaskDependencyResolveException: Could not determine the dependencies" when trying to apply stdlib</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53390" rel="nofollow"><code>KT-53390</code></a> Drop usage of -Xjava-source-roots when passing java sources required for Kotlin compilation</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-38622" rel="nofollow"><code>KT-38622</code></a> Non-incremental compilation because of R.jar with Android Gradle plugin 3.6</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53615" rel="nofollow"><code>KT-53615</code></a> Gradle: Fix deprecation warnings in CleanableStoreImpl</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-38576" rel="nofollow"><code>KT-38576</code></a> AnalysisResult.RetryWithAdditionalRoots crashes during incremental compilation with java classes in classpath</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53244" rel="nofollow"><code>KT-53244</code></a> Report from gradle about compiler plugins</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45747" rel="nofollow"><code>KT-45747</code></a> Add basic JUnit 5 Kotlin Gradle Plugin Android tests setup</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52839" rel="nofollow"><code>KT-52839</code></a> Warn in Gradle log why incremental compilation failed</li>
</ul>
<h3>Tools. Gradle. Cocoapods</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54314" rel="nofollow"><code>KT-54314</code></a> Cocoapods: Signing pod dependency for Xcode 14</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54060" rel="nofollow"><code>KT-54060</code></a> Xcode 14: disable bitcode embedding for Apple frameworks</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53127" rel="nofollow"><code>KT-53127</code></a> Cocoapod plugin ignores pod version</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53340" rel="nofollow"><code>KT-53340</code></a> Change default linking type for frameworks registered by cocoapods plugin</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53392" rel="nofollow"><code>KT-53392</code></a> Deprecate and delete downloading pod dependencies by direct link</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53695" rel="nofollow"><code>KT-53695</code></a> Build of macOS application fails if a framework is integrated via Cocoapods plugin</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53174" rel="nofollow"><code>KT-53174</code></a> CocoaPods: Synthetic Podfile does not specify platform</li>
</ul>
<h3>Tools. Gradle. JS</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53374" rel="nofollow"><code>KT-53374</code></a> KJS / Gradle: Implement IDEA sync detection logic via ValueSource to improve configuration cache support</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53788" rel="nofollow"><code>KT-53788</code></a> KJS / Gradle: Disable Gradle build cache for KotlinJsDce when development mode is enabled</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53614" rel="nofollow"><code>KT-53614</code></a> Kotlin/JS upgrade npm dependencies</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52950" rel="nofollow"><code>KT-52950</code></a> KJS: Report if yarn.lock was updated during built</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53367" rel="nofollow"><code>KT-53367</code></a> KJS: Migrate cssSupport API</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45789" rel="nofollow"><code>KT-45789</code></a> KJS / IR: Transitive NPM dependencies are not included in PublicPackageJsonTask output</li>
</ul>
<h3>Tools. Gradle. Multiplatform</h3>
<h4>New Features</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53396" rel="nofollow"><code>KT-53396</code></a> Support 'implementation platform()' by gradle kotlin mpp plugin for JVM target</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-40489" rel="nofollow"><code>KT-40489</code></a> MPP / Gradle: support BOM (enforcedPlatform) artifacts in source set dependencies DSL</li>
</ul>
<h4>Fixes</h4>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-27292" rel="nofollow"><code>KT-27292</code></a> MPP: jvm { withJava() }: Gradle build: Java source under Kotlin root is resolved while building, but does not produce output class files</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-34650" rel="nofollow"><code>KT-34650</code></a> Naming clash in MPP+Android: androidTest vs androidAndroidTest</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54387" rel="nofollow"><code>KT-54387</code></a> Remove MPP alpha stability warning</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-31468" rel="nofollow"><code>KT-31468</code></a> Targets disambiguation doesn't work if a depending multiplatform module uses <code>withJava()</code> mode</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-35916" rel="nofollow"><code>KT-35916</code></a> Gradle MPP plugin: Configurations for a main compilation and its default source set have different naming</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54090" rel="nofollow"><code>KT-54090</code></a> Take an Apple test device from the device list</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53256" rel="nofollow"><code>KT-53256</code></a> Implement K/N compiler downloading for KPM</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45412" rel="nofollow"><code>KT-45412</code></a> KotlinCompilation: Make sure .kotlinSourceSets and .allKotlinSourceSets include the default source set</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54071" rel="nofollow"><code>KT-54071</code></a> MPP/AGP compatibility: Bump maxSupportedVersion to 7.3.0</li>
</ul>
<h3>Tools. Gradle. Native</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53191" rel="nofollow"><code>KT-53191</code></a> Native cinterop sync problem with gradle</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54583" rel="nofollow"><code>KT-54583</code></a> watchosDeviceArm64 target shouldn't register test tasks</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53107" rel="nofollow"><code>KT-53107</code></a> Add arm64 support for watchOS targets (Xcode 14)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52303" rel="nofollow"><code>KT-52303</code></a> Gradle / Native: Build tasks ignore project.buildDir</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-47355" rel="nofollow"><code>KT-47355</code></a> Support macos target for FatFramework task</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53339" rel="nofollow"><code>KT-53339</code></a> MPP / CocoaPods: The static framework fails to install on a real iOS device</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-31573" rel="nofollow"><code>KT-31573</code></a> Missing description for Native Gradle tasks</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53131" rel="nofollow"><code>KT-53131</code></a> Gradle Sync: "NoSuchElementException: Array contains no element matching the predicate" with CocoaPods</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53686" rel="nofollow"><code>KT-53686</code></a> Task assembleReleaseXCFramework fails with "error: the path does not point to a valid framework" if project name contains a dash</li>
</ul>
<h3>Tools. Incremental Compile</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53266" rel="nofollow"><code>KT-53266</code></a> Increment Compilation: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing companion object constant field</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53871" rel="nofollow"><code>KT-53871</code></a> New IC: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing an inline property accessor</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53231" rel="nofollow"><code>KT-53231</code></a> New IC reports build failures for missing classpath snapshots</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-19804" rel="nofollow"><code>KT-19804</code></a> Relocatable IC caches</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52946" rel="nofollow"><code>KT-52946</code></a> CompileKotlinJs task is executed non-incrementally if there were changes made to the dependant module</li>
</ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53266" rel="nofollow"><code>KT-53266</code></a> Increment Compilation: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing companion object constant field</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53871" rel="nofollow"><code>KT-53871</code></a> New IC: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing an inline property accessor</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53231" rel="nofollow"><code>KT-53231</code></a> New IC reports build failures for missing classpath snapshots</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-19804" rel="nofollow"><code>KT-19804</code></a> Relocatable IC caches</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52946" rel="nofollow"><code>KT-52946</code></a> CompileKotlinJs task is executed non-incrementally if there were changes made to the dependant module</li>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53266" rel="nofollow"><code>KT-53266</code></a> Increment Compilation: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing companion object constant field</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53871" rel="nofollow"><code>KT-53871</code></a> New IC: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing an inline property accessor</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53231" rel="nofollow"><code>KT-53231</code></a> New IC reports build failures for missing classpath snapshots</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-19804" rel="nofollow"><code>KT-19804</code></a> Relocatable IC caches</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52946" rel="nofollow"><code>KT-52946</code></a> CompileKotlinJs task is executed non-incrementally if there were changes made to the dependant module</li>
</ul>
<h3>Tools. JPS</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-45474" rel="nofollow"><code>KT-45474</code></a> False positive NO_ELSE_IN_WHEN on sealed class with incremental compilation</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54228" rel="nofollow"><code>KT-54228</code></a> Switching abstract to sealed classes causes incremental issue</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-38483" rel="nofollow"><code>KT-38483</code></a> JPS: Stopping compilation causes IDE CompilationCanceledException</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-50310" rel="nofollow"><code>KT-50310</code></a> False positive NO_ELSE_IN_WHEN on incremental build when adding sealed classes</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48813" rel="nofollow"><code>KT-48813</code></a> Move cache version to compiler</li>
</ul>
<h3>Tools. Kapt</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54187" rel="nofollow"><code>KT-54187</code></a> JVM IR + kapt: incorrect modifier <code>final</code> is generated for nested enum in interface</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-48827" rel="nofollow"><code>KT-48827</code></a> Remove 'kapt.use.worker.api' property</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-52761" rel="nofollow"><code>KT-52761</code></a> Kotlin 1.7.0 breaks kapt processing for protobuf generated java sources</li>
</ul>
<h3>Tools. Scripts</h3>
<ul>
<li><a href="https://youtrack.jetbrains.com/issue/KT-54355" rel="nofollow"><code>KT-54355</code></a> Scripts: Internal compiler error (languageVersion=1.9)</li>
<li><a href="https://youtrack.jetbrains.com/issue/KT-53009" rel="nofollow"><code>KT-53009</code></a> Scripting: NDFDE “Descriptor wasn't found for declaration SCRIPT” on using script definition with kotlin from master</li>
</ul>

Kotlin 1.7.20 just got [released](https://github.com/JetBrains/kotlin/releases)!

# Changelog

## Analysis API

• KT-52667 FIR IDE: fun interfaces (SAM interfaces) are not properly resolved
• KT-52136 FIR: Implicit type declaration from the other module cannot be used for overloading

## Analysis API. FE1.0

• KT-51962 Analysis API: Finish Analysis API for FE1.0

## Analysis API. FIR

• KT-52779 FIR IDE: Import Optimizer cannot handle generic type qualifiers
• KT-50236 Fix OOB modification trackers for non-Kotlin code
• KT-51240 Analysis API: KtAnalysisSession for a specific module cannot create a symbol for PSI that cannot be seen from that module.
• KT-50868 Analysis API: decompiled type aliases are not resolved

## Compiler

• KT-53739 Builder inference, extension hides members
• KT-53733 Kotlin/Native: update source documentation for the new default memory manager
• KT-53667 Compiler crashes on attempt to alloc a string on the stack in new MM
• KT-53480 Internal error in file lowering: java.lang.ClassNotFoundException: com.android.systemui.R$string
• KT-52843 Compose: NPE at Parameters.getParameterByDeclarationSlot if inline function with default arguments takes a lambda which captures value class represented by Long
• KT-51868 JVM / IR: Inconsistent behaviour between lambda expression and SAM interface conversion for the same interface
• KT-53475 Kotlin/Native for iOS: "IllegalArgumentException: Sequence has more than one element"

## New Features

• KT-52495 Support until operator in back-ends
• KT-52420 Implement resolve of until operator
• KT-52419 Implement until operator in the parser
• KT-33755 Kotlin/Native: Provide a way to customize a bundle Identifier of a generated framework
• KT-51665 FIR: implement label resolve for "typed this" case
• KT-52361 Report warning on potentially empty intersection types

## Performance Improvements

• KT-47816 Disable script discovery for non-script environments
• KT-48635 JVM IR: Double/Float values are boxed when comparing for equality in equals method of data/value classes
• KT-23397 Optimize out field for property delegate when it's safe (JVM)

## Fixes

• KT-53272 Backend Internal error: Exception during IR lowering / No such value argument slot: 2
• KT-53124 Receiver type mismatch when combining extension properties, type projections, Java sources, and F-bounded type-variables
• KT-51868 JVM / IR: Inconsistent behaviour between lambda expression and SAM interface conversion for the same interface
• KT-36770 Prohibit unsafe calls with expected @NotNull T and given Kotlin generic parameter with nullable bound
• KT-52974 "IllegalStateException: Symbol with IrSimpleFunctionSymbolImpl is unbound" compiling native targets of MPP project
• KT-53007 JVM: "Bad invokespecial instruction: current class isn't assignable to reference class" when call superclass of outer class method from inner class
• KT-53019 K2: cannot cast callable reference to Function1 in runtime
• KT-53031 K2 compiler crashes with IllegalStateException: No type in ProtoBuf.ValueParameter
• KT-29168 Prohibit upper bounds violation with generic typealias using not all type parameters as arguments for underlying type in supertypes
• KT-52432 Using the IDE compiled with K2 (useFir) throws VerifyError exception
• KT-52327 False negative: TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM isn't reported
• KT-49682 Support JVM IR in KAPT stub generation
• KT-24643 Prohibit using a type parameter declared for an extension property inside delegate
• KT-51972 FIR, Gradle: "Symbol is invisible" compilation error with enabled Kotlin Lombok compiler plugin
• KT-52011 [FIR] All-open compiler plugin isn't supported
• KT-51950 JVM IR: "IndexOutOfBoundsException: Cannot pop operand off an empty stack" with crossinline lambdas and interface delegation
• KT-52540 Native: kotlin.NotImplementedError with Arrow library
• KT-48031 "IllegalStateException: Type variable TypeVariable(T) should not be fixed!"
• KT-47708 RequiresOptIn check does not flag experimental method usage in SAM lambda expressions
• KT-52913 JVM / IR: "IllegalArgumentException: Inline class types should have the same representation" when trying to down cast cast a value class
• KT-50771 IR partial linkage: Removed abstract callable members are not supported
• KT-52994 Enable generic inline classes as experimental feature
• KT-52742 CYCLE_IN_ANNOTATION_PARAMETER_ERROR false positive on annotations with default values
• KT-52743 Non-null generic functions throws NPE when assigned to val
• KT-52745 Frontend / K2: "IncompatibleClassChangeError: class A$B overrides final method A.length()I" caused by delegation in a sealed class
• KT-52832 Tree-generator's method FirExpression::isFirType returns true and false for different field names; it should always be true
• KT-52403 IncompatibleClassChangeError when inlining suspend funs
• KT-50107 Missed USAGE_IS_NOT_INLINABLE diagnostic: Leaking inline lambda parameter through extension receiver
• KT-47965 Missed USAGE_IS_NOT_INLINABLE diagnostic on inline lambda parameter usage as receiver of .let call
• KT-25787 No error on crossinline usage of receiver parameter of functional type in an inline function
• KT-52762 Frontend / K2: Named arguments for Java classes lead to "Cannot find a parameter with this name"
• KT-52680 K2: overload resolution ambiguity if this is casted in a different method
• KT-52676 K2: Unsupported compile-time value IrGetFieldImpl instead of IrConst in AnnotationCodegen for constant from Java
• KT-50293 False positive: USELESS_CAST on stub types
• KT-52175 WRONG_ANNOTATION_TARGET for annotation that used inside if
• KT-52338 "IncompatibleClassChangeError: Expected non-static field" with Kotlin class with same-named companion object property as base Java class field
• KT-49507 JVM: "IllegalAccessError: class X tried to access private field" with same-named Kotlin property and Java base class field
• KT-44512 FIR DFA: incorrect smartcast after null assignment inside a lambda
• KT-49200 FIR/FE 1.0: different behavior with multiple matching star imports
• KT-52718 declaringClass deprecation message mentions the wrong replacement in 1.7
• KT-52190 FIR2IR: Unexpected IrErrorTypeImpl type for put method inside buildMap
• KT-52197 Incorrect inference of var type inside lambda that passed to extension function with type parameters that defined inside this lambda
• KT-52057 Unsupported compile-time value STRING_CONCATENATION and GET_FIELD in annotation arguments
• KT-47823 JVM IR: "IllegalArgumentException: Inline class types should have the same representation" with break usage in the loop range
• KT-51883 Kotlin 1.6.20 generates "-" in type names around lambdas and inline extension function with reified type which breaks Apache Beam
• KT-52684 Syntax error regression on complicated combination of LT and GTEQ
• KT-52417 Reflection: Can't reflect on type parameters captured by SAM converted lambda
• KT-46797 JVM IR: suspendImpl has no generic signature, breaking reified types in anonymous object supertypes when using the type token pattern
• KT-51464 FIR: Unable to infer type in coroutines flow code
• KT-52163 JVM IR: Double.compareTo(Int) compiled to integer comparison
• KT-41980 FIR: erroneous scope during annotation resolve
• KT-47159 KtPsiUtils.areParenthesesUseless() is returning a false positive on expressions for interface delegation
• KT-51418 Substitute anonymous type's supertypes
• KT-35544 kotlin.TypeCastException has no message on Native
• KT-52386 StackOverflowError during Kotlin/Native gradle build
• KT-52592 NPE from KProperty.getExtensionDelegate on property delegated to another property
• KT-52551 Delegating to object property reference does not invoke object's initializer
• KT-51704 Contracts: "AssertionError: Arguments and parameters size mismatch" with companion object
• KT-25527 False positive UNUSED_VALUE for delegated property/variable
• KT-51002 [FIR] Hidden declaration hides visible one
• KT-51008 [FIR] Star import does not work for nested calssifiers of java class
• KT-52407 FIR: Star import has lower priority than built-in import
• KT-52431 Reported error instead of warning due to empty intersection type found
• KT-49394 Bad message and suggestion: The feature "unit conversion" is disabled
• KT-51168 FIR: Inference error with Java interop and captured types
• KT-49961 "AssertionError: Left expression was not processed: BINARY_EXPRESSION" when analyzing dangling [bracketed] expression inside elvis
• KT-50108 Difference in fun interface conversion behavior for uninitialized not-null function values
• KT-51889 Calls to super-classes constructors with context receivers fail on runtime
• KT-51228 [FIR] Unresolved reference on callable reference on implicit this with smartcast
• KT-52364 False positive for INFERRED_TYPE_VARIABLE_INTO_EMPTY_INTERSECTION
• KT-52237 JVM / IR: "IllegalArgumentException: No argument for parameter VALUE_PARAMETER CONTINUATION_CLASS" when implementing Map interface on class with suspending functions
• KT-50832 Method references to suspend inline functions are processed incorrectly
• KT-52194 False positive "Class 'my.packge.MyClass' is compiled by a pre-release version of Kotlin and cannot be loaded by this version of the compiler" but builds fine
• KT-47203 JVM Debugger: Parameter value doesn't change for tailrec function
• KT-52131 False positive variable unused warning when calling inline function in finally block
• KT-51738 Debugger: stepping over in inline function with multiple inline lambda invocations is incorrect
• KT-52198 Losing reference to the value of an outer variable (Ref$ObjectRef) when using suspend inline with suspendCancellableCoroutine
• KT-50994 FIR: AssertionError during inference of delegated properties with implicit types
• KT-51757 FIR does not see various JS/Native specific declarations in common modules
• KT-51201 FIR: ARGUMENT_TYPE_MISMATCH diagnostic contains generic parameter instead of the actual type
• KT-48444 FIR: type argument rejected for annotation
• KT-51754 JVM: Local variable table invalid for do-while with continue
• KT-51936 Breakpoint not hit on last line of suspend function on Android
• KT-27333 Forbid @Synchronized annotation on suspend functions
• KT-51530 "StackOverflowError: CoroutineTransformerMethodVisitor.spillVariables" with data class in Flow
• KT-51460 FIR: Protected property inaccessible from inner class
• KT-53947 IllegalStateException: No mapping for symbol: VALUE_PARAMETER INSTANCE_RECEIVER
• KT-51234 Context receivers can be duplicated in function declaration
• KT-51576 Context receivers: "AssertionError: Callers must check that current token is IDENTIFIER followed with '@'" with at character
• KT-49479 JVM / IR: "IllegalStateException: IrErrorType" during IR lowering with non-trivial recursion calls
• KT-52270 NullPointerException caused by braces on if-else returning a method reference inside lambda
• KT-47621 False negative INVISIBLE_MEMBER on call to inaccessible protected synthetic property setter
• KT-37796 NI: "ISE: Error type encountered" when inferring type of a property that delegates to itself
• KT-45430 PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression: toString()" with recursive function call in "also" block in nontrivial context
• KT-52691 K2: Expected FirResolvedTypeRef with ConeKotlinType but was FirImplicitTypeRefImpl with intertwined functional interfaces
• KT-52822 Fix contract for KtElement.getReference()
• KT-50223 IndexOutOfBoundsException from ClassicTypeSystemContext$DefaultImpls.getParameter during call resolution
• KT-51963 Change Maven version to 1.7.255
• KT-47664 Incorrect type checking in the case of generic types
• KT-48765 NI: Inferred type does not respect the bound of type variable
• KT-51243 False positive error "No required context receiver" inside contextual lambda
• KT-43541 TYPE_MISMATCH for member function which is not occur for top level function during unsafe cast
• KT-51016 [FIR] False positive OVERLOAD_RESOLUTION_AMBIGUITY between two extensions on different supertypes
• KT-50155 FIR: support contextual receivers
• KT-38637 Catch NoSuchFieldException in optimized when expression over enum

## Docs & Examples

• KT-49896 Kotlin/JS: improve -Xir-property-lazy-initialization description due to making it true by default

## IDE

• KTIJ-22286 Kotlin JPS project created via wizard does not contain Kotlin libraries in case of not-released version
• KTIJ-22065 IDE notification motivating Kotlin users to use EAP
• KTIJ-22209 Configure Kotlin on 221 idea adds 1.6.10 Kotlin (despite the fact that IDE plugin is 1.7.10)
• KTIJ-22171 Fix test BuiltInDecompilerConsistencyTest
• KTIJ-22016 Empty .kt file and build.gradle.kts can trigger an error while searching for a facade light class
• KT-52571 MPP Tasks on import are not up-to-date after subsequent launches
• KT-47777 ISE thrown from KtLightClassForFacadeImpl.Companion.createForFacadeNoCache has wrong message.

## IDE. FIR

• KT-52360 FIR IDE: Make the fix of isInheritor method better
• KT-51786 FIR IDE: IllegalStateException exception in Inspections' infrastructure
• KT-52331 Analysis API: ArrayIndexOutOfBoundsException exception in Diagnostics' infrastructure

## IDE. Code Style, Formatting

• KTIJ-21346 Incorrect formatting for functions with context receivers and visibility modifiers

## IDE. Completion

• KTIJ-21910 FIR IDE: Fix completion tests started failing after visibility checker refinement

## IDE. Decompiler, Indexing, Stubs

• KTIJ-21243 ContextReceivers: "UpToDateStubIndexMismatch: PSI and index do not match" plugin exception on - - library with context receivers usage attempt

## IDE. Gradle Integration

• KT-47627 IDE import fails with com.intellij.util.lang.PathClassLoader error for runCommonizer Gradle task on 212, 213 IDEAs
• KTIJ-21638 MPP: IntelliJ can not resolve MPP references in common-code
• KT-52216 HMPP / KTOR: False positive "TYPE_MISMATCH" with Throwable descendant

## IDE. Inspections and Intentions

• KTIJ-22540 Invalid "remove unnecessary parentheses" when delegating a functional interface to a SAM in brackets

## IDE. J2K

• KTIJ-21665 J2K generates non compiling code when lifting return and one branch is broken before binary operator

## IDE. JS

• KTIJ-22337 Wizard: Kotlin/Js for browser: cssSupport DSL should be updated

## IDE. K2

• KTIJ-21672 FIR IDE: Method reference on generic class breaks resolve
• KTIJ-21714 FIR IDE: Inherently imported type from another module is not properly resolved

## IDE. Script

• KT-52525 Update scripts handling in source roots

## IDE. Misc

• KTIJ-21699 Refactoring: move out parts of the plugin useful for both FE10 and K2

## JavaScript

## New Features

• KT-39423 KJS: Optionally generate a method to handle optional parameters for function in typescript
• KT-42282 KJS IR: add an ability to run separate tests

## Performance Improvements

• KT-50270 KJS IR: Unnecessary getter and setter calls when accessing class members

## Fixes

• KT-51133 Kotlin/JS - IR: even simple lambdas generate a lot of useless boilerplate
• KT-51123 Provide a way to add comments to generated JS
• KT-48493 KJS / IR: Invalid d.ts for inner classes inside objects
• KT-52553 KJS / IR: diamond hierarchy with super.toString produces stack overflow in runtime
• KT-23252 JS: Unit materialization on declaration and assignment
• KT-51128 Kotlin/JS - IR generate huge count of useless blocks
• KT-50778 KJS/IR: Inline class has no field when building production distribution
• KT-50157 KSJ IR: Applying identity equality operator to Chars always returns false
• KT-38262 Javascript generation (and Typescript) fails on 'then', 'catch' and 'finally' (and others?) claiming they are reserved names
• KT-51066 KJS / IR: suspend lambda parameter of value class is undefined
• KT-51102 KJS/IR: Assertion failed at translateCallArguments(jsAstUtils.kt:343)
• KT-51878 KJS / Legacy: Unit is not materialized in an overridden method, but it should be

## Language Design

• KT-47986 Implicit inferring a type variable into an upper bound in the builder inference context
• KT-49264 Deprecate infix function calls of functions named "suspend" with dangling function literal
• KT-25636 Native: Object is frozen by default problem
• KT-49303 Implement support for basic compile-time evaluation

## Libraries

• KT-52932 Open-ended ranges in the standard library
• KT-52909 Implement a walk extension function for java.nio.file.Path
• KT-52910 Provide visit extension functions for java.nio.file.Path
• KT-48232 Multiplatform function for computing cubic root
• KT-52778 The documentation for the Duration does not indicate any differences from the ISO-8601
• KT-52618 ThreadLocalRandom is not a good source of randomness on Android before SDK 34, so don't use it for Kotlin Random
• KT-52910 Provide visit extension functions for java.nio.file.Path
• KT-52909 Implement a walk extension function for java.nio.file.Path
• KT-52910 Provide visit extension functions for java.nio.file.Path
• KT-52909 Implement a walk extension function for java.nio.file.Path

## Native

• KT-53346 MPP project with kotlinx-serialization-json:1.4.0-RC is not built

## Native. C Export

• KT-45468 Kotlin/Native: Bitcode verification error when trying to export a cached klib to a static or dynamic library

## Native. C and ObjC Import

• KT-53373 Native: @ExportObjCClass doesn't work with the new memory manager
• KT-49034 Kotlin/Native: cnames.structs.Foo resolves into wrong declaration
• KT-26478 Objective-C object's class name is null in ClassCastException's message

## Native. ObjC Export

• KT-51593 Include more information in Objective-C header documentation
• KT-33117 Improve customizing Info.plist in produced frameworks
• KT-52681 Native: @end; for Objective-C is generated with an unnecessary semicolon

## Native. Platforms

• KT-52226 Kotlin/Native: Add support for cross-compilation of MIPS targets from macOS and Windows hosts

## Native. Runtime

• KT-52430 KMM 1.6.21 framework built with Xcode13, new MM GC Can't support iOS 9.x
• KT-53534 Kotlin/Native: -Xruntime-logs=gc=info flag doesn't work with compiler caches in 1.7.20-beta

## Native. Runtime. Memory

• KT-52692 Kotlin/Native: fix tests with aggressive GC
• KT-52130 Kotlin/Native: use Xallocator for Kotlin objects only
• KT-51436 Kotlin/Native: optimize mark queue

## Reflection

• KT-51804 An error occurs when callBy a KFunction that contains a value class as an argument, has a default argument set, and has more than 32 arguments.

## Tools. CLI

• KT-52465 CLI: IllegalStateException IrSimpleFunctionPublicSymbolImpl when source root is duplicated
• KT-52380 Invalid path to compiler plugins should be reported as a compiler error
• KT-51025 JVM CLI compiler takes class file from classpath instead of input java source file
• KT-51846 Setting random value to the compiler argument where number is expected should produce an error. "-Xbackend-threads=abcd"

## Tools. Compiler Plugins

• KT-52486 [K2] Looking for function/constructor whose parameters are annotated or meta annotated
• KT-52872 Mark supportsK2 in ComponentRegistrar.kt as JvmDefault to avoid compatibility problems
• KT-52804 A function obtained by Fir IrBuiltins has an incorrect package
• KT-52468 Rename module and jar for lombok compiler plugin

## Tools. Gradle

• KT-53670 Gradle: Cyclic dependency between kotlin-gradle-plugin-idea-1.7.20-Beta and kotlin-gradle-plugin-idea-proto-1.7.20-Beta
• KT-53615 Gradle: Fix deprecation warnings in CleanableStoreImpl
• KT-53118 Fully up-to-date builds are slower with Kotlin 1.7.0
• KT-51923 Improve usability of errors and warnings by being able to click on them
• KT-53244 Report from gradle about compiler plugins
• KT-52839 Warn in Gradle log why incremental compilation failed
• KT-46019 Compatibility with Gradle 7.1 release
• KT-47047 Migrate Kotlin Gradle Plugin from using Gradle conventions
• KT-52698 Don't add InspectClassesForMultiModuleIC task when new incremental compilation is enabled
• KT-52867 Provide simplified JVM toolchain configuration method
• KT-45747 Add basic JUnit 5 Kotlin Gradle Plugin Android tests setup
• KT-46034 Shadow Kotlin Gradle plugin dependencies
• KT-28664 Support ExtensionContainer on kotlin targets and source sets.
• KT-19472 Useful extensions of Gradle Kotlin DSL provided by Gradle Kotlin plugin
• KT-34393 Kotlin Gradle DSL: Inconsistent srcDir configuration between Java and Kotlin
• KT-51629 There isn't enough info about incremental compilation state in logs while running build with --info key

## Tools. Gradle. Cocoapods

• KT-53174 CocoaPods: Synthetic Podfile does not specify platform
• KT-53127 "MaterialComponents normal armv7" in Cocoapods plugin between Kotlin 1.6.21 and 1.7.0
• KT-44155 Cocoapods doesn't support pods without module map file inside
• KT-49032 Cocoapods cinterop: some header files are not found
• KT-53337 Add warning about future changing default linking type of framework provided via cocoapods plugin

## Tools. Gradle. JS

• KT-52637 KJS / Gradle: Add SCSS webpack config
• KT-51527 Kotlin/JS: BrowserXRun causes full-screen Webpack error "Compiled with problems: asset size limit/entrypoint size limit" for fresh Kotlin-React project from wizard
• KT-51532 Kotlin/JS: passing environment variable via Gradle script causes "Execution optimizations have been disabled" warnings
• KT-52221 Kotlin/JS: failed Node tests are not reported in a standard way

## Tools. Gradle. Multiplatform

• KT-52243 CInteropProcess is not cacheable despite the annotation
• KT-52741 MPP: klib outputs are not reproducible
• KT-52208 MPP: Gradle plugin 1.7 doesn't support latest api versions (1.8, 1.9)
• KT-54071 MPP/AGP compatibility: Bump maxSupportedVersion to 7.3.0

## Tools. Gradle. Native

• KT-52632 Gradle / Native: commonizeNativeDistributionTask can never be up-to-date
• KT-52328 "ld: framework not found SQLCipher" linkDebugTestIosSimulatorArm64 error

## Tools. Incremental Compile

• KT-53168 Incremental compilation doesn't perform correctly after a few iterations
• KT-52925 [IR BE] Non incremental build occurs after build failure for compileKotlinJs task
• KT-52946 CompileKotlinJs task is executed non-incrementally if there were changes made to the dependant module
• KT-52329 Reduce memory usage of classpath snapshot cache
• KT-53266 Increment Compilation: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing companion object constant field
• KT-53231 New IC reports build failures for missing classpath snapshots

## Tools. JPS

• KT-47824 'when expression must be exhaustive' isn't thrown during incremental compilation
• KT-51873 JPS build is incorrect after gdw build
• KTIJ-17072 JPS does not rebuild Kotlin usages of declared in Java when enum entry is added
• KT-51537 Rebuild module on plugin classpaths change

## Tools. REPL

• KT-45065 REPL: Incorrect output for unsigned value
• KT-53043 Scripting: Changes in REPL protocol: mark end of errors

## Tools. Scripts

• KT-52598 Scripts and REPL snippets are not checked against using 'kotlin' package
• KT-47187 Kotlin ScriptEngine Failes to Compile a Trivial Statement After Failing to Compile a Broken One
• KT-47191 [Kotlin Script Engine] Compiling Without Evaluating Leaves Engine in a Bad State

## Tools. Kapt

• KT-52761 Kotlin 1.7.0 breaks kapt processing for protobuf generated java sources

Kotlin 1.7.20-RC just got [released](https://github.com/JetBrains/kotlin/releases)!

## Changelog

### Compiler

• KT-53739 Builder inference, extension hides members
• KT-53733 Kotlin/Native: update source documentation for the new default memory manager
• KT-53667 Compiler crashes on attempt to alloc a string on the stack in new MM
• KT-53480 Internal error in file lowering: java.lang.ClassNotFoundException: com.android.systemui.R$string
• KT-52843 Compose: NPE at Parameters.getParameterByDeclarationSlot if inline function with default arguments takes a lambda which captures value class represented by Long
• KT-51868 JVM / IR: Inconsistent behaviour between lambda expression and SAM interface conversion for the same interface
• KT-53475 Kotlin/Native for iOS: "IllegalArgumentException: Sequence has more than one element"

### Libraries

• KT-52910 Provide visit extension functions for java.nio.file.Path
• KT-52909 Implement a walk extension function for java.nio.file.Path

### Native

• KT-53346 MPP project with kotlinx-serialization-json:1.4.0-RC is not built

### Native. C and ObjC Import

• KT-53373 Native: @ExportObjCClass doesn't work with the new memory manager

### Native. Runtime

• KT-53534 Kotlin/Native: -Xruntime-logs=gc=info flag doesn't with compiler caches in 1.7.20-beta

### Tools. Gradle

• KT-53670 Gradle: Cyclic dependency between kotlin-gradle-plugin-idea-1.7.20-Beta and kotlin-gradle-plugin-- idea-proto-1.7.20-Beta
• KT-53615 Gradle: Fix deprecation warnings in CleanableStoreImpl
• KT-53118 Fully up-to-date builds are slower with Kotlin 1.7.0

### Tools. Gradle. Cocoapods

• KT-53337 Add warning about future changing default linking type of framework provided via cocoapods plugin

### Tools. Incremental Compile

• KT-53266 Increment Compilation: "IllegalStateException: The following LookupSymbols are not yet converted to ProgramSymbols" when changing companion object constant field
• KT-53231 New IC reports build failures for missing classpath snapshots

### Tools. Kapt

• KT-52761 Kotlin 1.7.0 breaks kapt processing for protobuf generated java sources

Kotlin 1.7.20-Beta just got [released](https://blog.jetbrains.com/kotlin/2022/08/kotlin-1-7-20-beta/)!

Now fully supporting 1.8 - 1.19