Sourced from kotlin-stdlib's releases.

Kotlin 1.6.0

Changelog

Android

• KT-48019 Bundle Kotlin Tooling Metadata into apk artifacts
• KT-47733 JVM / IR: Android Synthetic don't generate _findCachedViewById function

Compiler

New Features

• KT-47984 In-place arguments inlining for @​InlineOnly functions
• KT-12794 Allow runtime retention repeatable annotations when compiling under Java 8
• KT-43714 Support annotations on class type parameters (AnnotationTarget.TYPE_PARAMETER)
• KT-45949 Kotlin/Native: Improve bound check elimination
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-48194 Try to resolve calls where we don't have enough type information, using the builder inference despite the presence of the annotation
• KT-47736 Support conversion from regular functional types to suspending ones in JVM IR
• KT-39055 Support property delegate created via synthetic method instead of field

Performance Improvements

• KT-45185 FIR2IR: get rid of IrBuiltIns usages
• KT-47918 JVM / IR: Performance degradation with const-bound for-cycles
• KT-33835 Bytecode including unnecessary null checks for safe calls where left-hand side is non-nullable
• KT-41510 Compilation of kotlin html DSL is still too slow
• KT-48211 We spend a lot of time in ExpectActual declaration checker when there is very small amount of actual/expect declaration
• KT-39054 Optimize delegated properties which call get/set on the given KProperty instance on JVM
• KT-46615 Don't generate nullability assertions in methods for directly invoked lambdas

Fixes

• KT-49613 JVM / IR: "Exception during IR lowering" with java fun interface and it's non-trivial usage
• KT-49548 "ClassCastException: java.util.ArrayList$Itr cannot be cast to kotlin.collections.IntIterator" with Iterable inside let
• KT-22562 Deprecate calls to "suspend" named functions with single dangling lambda argument
• KT-47120 JVM IR: NoClassDefFoundError when there are an extension and a regular function with the same name
• KT-49477 Has ran into recursion problem with two interdependant delegates
• KT-49442 ClassCastException on reporting [EXPOSED_FROM_PRIVATE_IN_FILE] Deprecation: private-in-file class should not expose 'private-in-class'
• KT-49371 JVM / IR: "NoSuchMethodError" with multiple inheritance
• KT-44843 PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression" with delegate who has name or parameter with the same name as a property
• KT-49294 Turning FlowCollector into 'fun interface' leads to AbstractMethodError
• KT-18282 Companion object referencing it's own method during construction compiles successfully but fails at runtime with VerifyError
• KT-25289 Prohibit access to class members in the super constructor call of its companion and nested object
• KT-32753 Prohibit @​JvmField on property in primary constructor that overrides interface property
• KT-43433 Suspend conversion is disabled message in cases where it is not supported and quickfix to update language version is suggested
• KT-49399 Building repeatable annotation with Container nested class fails with ISE: "Repeatable annotation class should have a container generated"
• KT-49209 Default upper bound for type variables should be non-null
• KT-49335 NPE in RepeatedAnnotationLowering.wrapAnnotationEntriesInContainer when using @Repeatable annotation from different file
• KT-48876 java.lang.UnsupportedOperationException: org.jetbrains.kotlin.ir.expressions.impl.IrReturnableBlockImpl@4a729df2

... (truncated)

Sourced from kotlin-stdlib's changelog.

1.6.0

Android

• KT-48019 Bundle Kotlin Tooling Metadata into apk artifacts
• KT-47733 JVM / IR: Android Synthetic don't generate _findCachedViewById function

Compiler

New Features

• KT-47984 In-place arguments inlining for @​InlineOnly functions
• KT-12794 Allow runtime retention repeatable annotations when compiling under Java 8
• KT-43714 Support annotations on class type parameters (AnnotationTarget.TYPE_PARAMETER)
• KT-45949 Kotlin/Native: Improve bound check elimination
• KT-43919 Support loading Java annotations on base classes and implementing interfaces' type arguments
• KT-48194 Try to resolve calls where we don't have enough type information, using the builder inference despite the presence of the annotation
• KT-47736 Support conversion from regular functional types to suspending ones in JVM IR
• KT-39055 Support property delegate created via synthetic method instead of field

Performance Improvements

• KT-45185 FIR2IR: get rid of IrBuiltIns usages
• KT-47918 JVM / IR: Performance degradation with const-bound for-cycles
• KT-33835 Bytecode including unnecessary null checks for safe calls where left-hand side is non-nullable
• KT-41510 Compilation of kotlin html DSL is still too slow
• KT-48211 We spend a lot of time in ExpectActual declaration checker when there is very small amount of actual/expect declaration
• KT-39054 Optimize delegated properties which call get/set on the given KProperty instance on JVM
• KT-46615 Don't generate nullability assertions in methods for directly invoked lambdas

Fixes

• KT-49613 JVM / IR: "Exception during IR lowering" with java fun interface and it's non-trivial usage
• KT-49548 "ClassCastException: java.util.ArrayList$Itr cannot be cast to kotlin.collections.IntIterator" with Iterable inside let
• KT-22562 Deprecate calls to "suspend" named functions with single dangling lambda argument
• KT-47120 JVM IR: NoClassDefFoundError when there are an extension and a regular function with the same name
• KT-49477 Has ran into recursion problem with two interdependant delegates
• KT-49442 ClassCastException on reporting [EXPOSED_FROM_PRIVATE_IN_FILE] Deprecation: private-in-file class should not expose 'private-in-class'
• KT-49371 JVM / IR: "NoSuchMethodError" with multiple inheritance
• KT-44843 PSI2IR: "org.jetbrains.kotlin.psi2ir.generators.ErrorExpressionException: null: KtCallExpression" with delegate who has name or parameter with the same name as a property
• KT-49294 Turning FlowCollector into 'fun interface' leads to AbstractMethodError
• KT-18282 Companion object referencing it's own method during construction compiles successfully but fails at runtime with VerifyError
• KT-25289 Prohibit access to class members in the super constructor call of its companion and nested object
• KT-32753 Prohibit @​JvmField on property in primary constructor that overrides interface property
• KT-43433 Suspend conversion is disabled message in cases where it is not supported and quickfix to update language version is suggested
• KT-49399 Building repeatable annotation with Container nested class fails with ISE: "Repeatable annotation class should have a container generated"
• KT-49209 Default upper bound for type variables should be non-null
• KT-49335 NPE in RepeatedAnnotationLowering.wrapAnnotationEntriesInContainer when using @Repeatable annotation from different file
• KT-48876 java.lang.UnsupportedOperationException: org.jetbrains.kotlin.ir.expressions.impl.IrReturnableBlockImpl@4a729df2
• KT-48131 IAE "Repeatable annotation container value must be a class reference" on using Kotlin-repeatable annotation from dependency

... (truncated)

• 829d1d8 Add changelog for 1.6.0
• 99b69ae Merge KT-MR-4942: Mark packages for relocation to fix classpath interferring ...
• 583488e [scripting] Fix NPE in aether.kt
• 0d1f362 Fix PureAndroidAndJavaConsumeMppLibIT working with test project
• 46af453 JVM KT-49613 don't generate indy reference to protected constructor
• d5275aa Mark packages for relocation to fix classpath interferring in main-kts
• a3820d4 JVM KT-49548 progression iterators can be tainted
• 63044b1 Update -Xjvm-default description
• e8e3c72 Update INTERFACE_CANT_CALL_DEFAULT_METHOD_VIA_SUPER message
• ddd02fe JvmDefault. Allow non default inheritance with special flag
• Additional commits viewable in compare view

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