CHANGELOG.md

1.4.30 (Feb 2021)

• KT-44083 Fix NSUInteger size for Watchos x64

1.4.30-RC (Jan 2021)

• KT-44271 Incorrect linking when targeting linux_x64 from mingw_x64 host
• KT-44219 Non-reified type parameters with recursive bounds are not supported yet
• KT-43599 K/N: Unbound symbols not allowed
• KT-42172 Kotlin/Native: StableRef.dispose race condition on Kotlin deinitRuntime
• KT-42482 Kotlin subclasses of Obj-C classes are incompatible with ISA swizzling (it causes crashes)

1.4.30-M1 (Dec 2020)

• KT-43597 Xcode 12.2 support
• KT-43276 Add watchos_x64 target
• KT-43198 Init blocks inside of inline classes
• KT-42649 Fix secondary constructors of generic inline classes
• KT-38772 Support non-reified type parameters in typeOf
• KT-42428 Inconsistent behavior of map.entries on Kotlin.Native
• Compiler customization
  • KT-40584 Untie Kotlin/Native from the fixed LLVM distribution
  • KT-42234 Move LLVM optimization parameters into konan.properties
  • KT-40670 Allow to override konan.properties via CLI
• Runtime
  • KT-42822 Kotlin/Native Worker leaks ObjC/Swift autorelease references (and indirectly bridged K/N references) on Darwin targets
  • KT-42397 Reverse-C interop usage of companion object reports spurious leaks
  • GH-4482 Add a switch to destroy runtime only on shutdown
  • GH-4575 Fix unchecked runtime shutdown
  • GH-4194 Fix possible race in terminate handler
• C-interop
  • KT-42412 Modality of generated property accessors is always FINAL
  • KT-38530 values() method of enum classes is not exposed to Objective-C/Swift
  • GH-4572 Fix for interop enum and struct generation
• Optimizations
  • KT-42294 Significantly improved compilation time
  • KT-42942 Optimize peak backend memory by clearing BindingContext after psi2ir
  • KT-31072 Don't use non-reified arguments to specialize type operations in IR inliner

1.4.21 (Dec 2020)

• Fixed KT-43517
• Fixed KT-43530
• Fixed KT-43265

1.4.20 (Nov 2020)

• XCode 12 support
• Completely reworked escape analysis for object allocation
• Use ForeignException wrapper to handle native exceptions (GH-3553)
• CocoaPods plugin improvements
• equals/hashCode support for adapted callable references (KT-39800)
• equals/hashCode support for fun interfaces (KT-39798)
• IR-level optimizations
  • Constant folding
  • String concatenation flattening
• Various fixes/improvements to compiler caches
• Some fixes to samples (calculator, tensorflow)
• Bug fixes
  • Eliminate recursive GC calls (KT-42275)
  • Fix support for @OverrideInit constructors with default arguments (KT-41910)
  • Fix support for forward declarations (KT-41655)
  • KT-41394
  • KT-41811
  • KT-41716
  • KT-41250
  • KT-42000
  • KT-41907

1.4.10 (Sep 2020)

• Fixed a newline handling in @Deprecated annotation in ObjCExport (KT-39206)
• Fixed suspend function types in ObjCExport (KT-40976)
• Fixed support for unsupported C declarations in cinterop (KT-39762)

v1.4.0 (Aug 2020)

• Objective-C/Swift interop:
  • Reworked exception handling (GH-3822, GH-3842)
  • Enabled support for Objective-C generics by default (GH-3778)
  • Support for Kotlin’s suspending functions (GH-3915)
  • Handle variadic block types in ObjC interop (KT-36766)
• Added native-specific frontend checkers (implemented in the main Kotlin repository: GH-3293, GH-3091, GH-3172)
• .dSYMs for release binaries on Apple platforms (GH-4085)
• Improved compilation time of builds with interop libraries by reworking cinterop under the hood.
• Experimental mimalloc allocator support (-Xallocator=mimalloc) to improve execution time performance. (GH-3704)
• Tune GC to improve execution time performance
• Various fixes to compiler caches and Gradle daemon usage

v1.3.72 (April 2020)

• Fix ios_x64 platform libs cache for iOS 11 and 12 (GH-4071)

v1.3.71 (March 2020)

• Fix lazy {} memory leak regression (KT-37232, GH-3944)
• Fix using cached Kotlin subclasses of Objective-C classes (GH-3986)

v1.3.70 (Dec 2019)

• Support compiler caches for debug mode (GH-3650)
• Support running Kotlin/Native compiler from Gradle daemon (GH-3442)
• Support multiple independent Kotlin frameworks in the same application (GH-3457)
• Compile-time allocation for some singleton objects (GH-3645)
• Native support for SIMD vector types in compiler and interop (GH-3498)
• API for runtime detector of cyclic garbage (GH-3616)
• Commonized StringBuilder (GH-3593) and Float.rangeTo (KT-35299)
• Fix interop with localized strings (GH-3562)
• Provide utility for user-side generation of platform libraries (GH-3538)
• On-stack allocation using local escape analysis (GH-3625)
• Code coverage support on Linux and Windows (GH-3403)
• Debugging experience improvements (GH-3561, GH-3638, GH-3606)

v1.3.60 (Oct 2019)

• Support XCode 11
• Switch to LLVM 8.0
• New compiler targets:
  • watchOS targets, watchos_x86, watchos_arm64 and watchos_arm32 (GH-3323, GH-3404, GH-3344)
  • tvOS targets tvos_x64 and tvos_arm64 (GH-3303, GH-3363)
  • native Android targets android_x86 and android_x64 (GH-3306, GH-3314)
• Standard CLI library kotlinx.cli is shipped with the compiler distribution (GH-3215)
• Improved debug information for inline functions (KT-28929, GH-3292)
• Improved runtime performance of interface calls, up to 5x faster (GH-3377)
• Improved runtime performance of type checks, up to 50x faster (GH-3291)
• Produce native binaries directly from klibs, speeds up large project compilation (GH-3246)
• Supported arbitrary (up to 255 inclusive) function arity (GH-3253)
• Supported callable references to suspend functions (GH-3197)
• Implemented experimental -Xg0 switch, symbolication of release binaries for iOS (GH-3233, GH-3367)
• Interop:
  • Allow passing untyped null as variadic function's parameter (GH-3312, KT-33525)
• Standard library:
  • Allow scheduling jobs in arbitrary K/N context, not only Worker (GH-3316)
• Important bug fixes:
  • Boxed negative values can lead to crashes on ios_arm64 (GH-3296)
  • Implemented thread-safe tracking of Objective-C references to Kotlin objects (GH-3267)

v1.3.50 (Aug 2019)

• Kotlin/Native versioning now aligned with Kotlin versioning
• Exhaustive platform libraries on macOS (GH-3141)
• Update to Gradle 5.5 (GH-3166)
• Improved debug information correctness (GH-3130)
• Major memory manager refactoring (GH-3129)
• Embed actual bitcode in produced frameworks (GH-2974)
• Compilation speed improvements
• Interop:
  • Support kotlin.Deprecated when producing framework (GH-3114)
  • Ensure produced Objective-C header does not have warnings (GH-3101)
  • Speed up interop stub generator (GH-3082, GH-3050)
  • getOriginalKotlinClass() to get KClass for Kotlin classes in Objective-C (GH-3036)
  • Supported nullable primitive types in reverse C interop (GH-3198)
• Standard library
  • API for delayed job execution on worker (GH-2971)
  • API for running via worker's job queue (GH-3078)
  • MonoClock and Duration support (GH-3028)
  • Support typeOf (KT-29917, KT-28625)
  • New zero-terminated utf8 to String conversion API (GH-3116)
  • Optimize StringBuilder for certain cases (GH-3202)
  • Implemented Array.fill API (GH-3244)

v1.3.0 (Jun 2019)

• CoreLocation platform library on macOS (GH-3041)
• Converting Unit type to Void during producing framework for Objective-C/Swift (GH-2549, GH-1271)
• Support linux/arm64 targets (GH-2917)
• Performance improvements of memory manager (GH-2813)
• FreezableAtomicReference prototype (GH-2776)
• Logging and error messages enhancements
• Interop:
  • Support nullable String return type in reverse C interop (GH-2956)
  • Support setting custom exception hook in reverse C interop (GH-2941)
  • Experimental generics support for produced frameworks for Objective-C/Swift implemented by Kevin Galligan (GH-2850)
  • Improve support for Objective-C methods clashing with methods of Any (GH-2914)
  • Support variadic Objective-C functions (GH-2896)

v1.2.1 (Apr 2019)

• Fix Objective-C interop with React (GH-2872)
• Fix “not in vtable” compiler crash when generating frameworks (GH-2865)
• Implement some optimizations (GH-2854)
• Fix release build for 32-bit Windows (GH-2848)
• Fix casts to type parameters with multiple bounds (GH-2888)
• Fix “could not get descriptor uniq id for deserialized class FlagEnum” compiler crash when generating framework (GH-2874)

v1.2.0 (Apr 2019)

• New intermediate representation based library format allowing global optimizations
• Exception backtraces in debug mode on macOS and iOS targets contains symbolic information
• Support for 32-bit Windows targets (target mingw_x86)
• Support for cross-compilation to Linux (x86-64 and arm32) from macOS and Windows hosts
• Static Apple frameworks can be produced
• Support Gradle 5.1
• Fix alignment-related issues on ARM32 and MIPS platforms
• Write unhandled exceptions stacktrace on device to iOS crash log
• Fix undefined behavior in some arithmetic operations
• Interop:
  • Get rid of libffi dependency
  • Support returning struct from C callbacks
  • Support passing Kotlin strings to C interop functions accepting UTF-32 arguments
  • Fix bool conversion
  • Support variable length arrays
  • Provide Kotlin access to C compiler intrinsics via platform.builtins package
  • Support clang modules (for Objective-C only)
  • Experimental integration with CocoaPods
• IDE
  • Kotlin/Native plugin is supported in CLion 2018.3 and AppCode/CLion 2019.1
  • Basic highlighting support for .def files
  • Navigation to source files from exception backtrace

v1.1.0 (Dec 2018)

• Performance optimizations:
  • runtime: optimization of queue of finalization
  • compiler: loop generation optimization
  • compiler: reduce RTTI size
  • runtime: reduce size of the object header
• Contracts support
• Regex engine: fix quantifier processing

v0.9.3 (Sep 2018)

• Bugfixes

v0.9.2 (Sep 2018)

• Support Xcode 10.0
• iOS 9.0 is the minimal supported version for all targets
• Swift interop improvements
• Support shared top level values of some immutable types (i.e. String and atomic references)
• Support release Kotlin 1.3.0

v0.9.1 (Sep 2018)

• Improve naming in produced Objective-C frameworks. Use ‘Kotlin’ prefix instead of ‘Stdlib’ prefix.
• Improvements in KLIB: Library versioning, IDEA-friendly internal format.

v0.9 (Sep 2018)

• Support Kotlin 1.3M2
  • Note: Common modules of multiplatform projects also should use Kotlin 1.3
• Major standard library (native parts) rework and rename
• New Gradle plugin with multiplatform integration and reworked DSL
• Support unsigned types in Kotlin and interop
• Support non-experimental coroutines API (kotlin.coroutines)
• Top level object var/val can only be accessed from the main thread
• Support lazy properties in singleton objects
• Update LLVM to 6.0.1

v0.8 (Jul 2018)

• Singleton objects are frozen after creation, and shared between threads
• String and primitives types are frozen by default
• Common stdlib with Kotlin/JVM and Kotlin/JS
• Implemented kotlin.random.* and Collection.shuffle
• Implemented atomic integers and atomic references
• Multiple bugfixes in compiler (coroutines, inliner)
• Support 32-bit iOS (target ios_arm32)
• New experimental Gradle plugin
• Support Xcode 9.4.1
• Optimizations (switch by enum, memory management)

v0.7.1 (Jun 2018)

• Bugfixes in the runtime (indexOf, GC for kotlin.Array, enum equality) and the compiler
• Fix NSBlock problem, preventing upload of binaries to the AppStore
• Create primitive type boxes and kotlin.String as frozen by default
• Support Gradle 4.7, provide separate run task for each executable
• Support Xcode 9.4 and CoreML and ClassKit frameworks on Apple platforms
• Improved runtime Kotlin variable examination
• Minor performance optimizations in compiled code and runtime
• Add disableDesignatedInitializerChecks definition file support

v0.7 (May 2018)

• Interop with Objective-C/Swift changes:
  • Uniform direct and reverse interops (values could be passed in both directions now)
  • Interop by exceptions
  • Type conversion and checks (as, is) for interop types
  • Seamless interop on numbers, strings, lists, maps and sets
  • Better interop on constructors and initializers
• Switched to Xcode 9.3 on Apple platforms
• Introduced object freezing API, frozen object could be used from multiple threads
• Kotlin enums are frozen by default
• Switch to Gradle 4.6
• Use Gradle native dependency model, allowing to use .klib as Maven artifacts
• Introduced typed arrays API
• Introduced weak references API
• Activated global devirtualization analysis
• Performance improvements (box caching, bridge inlining, others)

v0.6.2 (Mar 2018)

• Support several expectedBy-dependencies in Gradle plugin.
• Improved interaction between Gradle plugin and IDE.
• Various bugfixes

v0.6.1 (Mar 2018)

• Various bugfixes
• Support total ordering in FP comparisons
• Interop generates string constants from string macrodefinitions
• STM32 blinky demo in pure Kotlin/Native
• Top level variables initialization redesign (proper dependency order)
• Support kotlin.math on WebAssembly targets
• Support embedded targets on Windows hosts

v0.6 (Feb 2018)

• Support multiplatform projects (expect/actual) in compiler and Gradle plugin
• Support first embedded target (STM32 board)
• Support Kotlin 1.2.20
• Support Java 9
• Support Gradle 4.5
• Transparent Objective-C/Kotlin container classes interoperability
• Produce optimized WebAssembly binaries (10x smaller than it used to be)
• Improved APIs for object transfer between threads and workers
• Allow exporting top level C function in reverse interop with @CName annotation
• Supported debugging of code with inline functions
• Multiple bugfixes and performance optimizations

v0.5 (Dec 2017)

• Reverse interop allowing to call Kotlin/Native code compiled as framework from Objective-C/Swift programs
• Reverse interop allowing to call Kotlin/Native code compiled as shared object from C/C++ programs
• Support generation of shared objects and DLLs by the compiler
• Migration to LLVM 5.0
• Support WebAssembly target on Linux and Windows hosts
• Make string conversions more robust
• Support kotlin.math package
• Refine workers and string conversion APIs

v0.4 (Nov 2017)

• Objective-C frameworks interop for iOS and macOS targets
• Platform API libraries for Linux, iOS, macOS and Windows
• Kotlin 1.2 supported
• val and function parameters can be inspected in debugger
• Experimental support for WebAssembly (wasm32 target)
• Linux MIPS support (little and big endian, mips and mipsel targets)
• Gradle plugin DSL fully reworked
• Support for unit testing annotations and automatic test runner generation
• Final executable size reduced
• Various interop improvements (forward declaration, better handling of unsupported types)
• Workers object subgraph transfer checks implemented
• Optimized low level memory management using more efficient cycle tracing algorithm

v0.3.4 (Oct 2017)

• Intermediate release

v0.3.2 (Sep 2017)

• Bug fixes

v0.3.1 (Aug 2017)

• Improvements in C interop tools (function pointers, bitfields, bugfixes)
• Improvements to Gradle plugin and dependency downloader
• Support for immutable data linked into an executable via ImmutableDataBlob class
• Kotlin 1.1.4 supported
• Basic variable inspection support in the debugger
• Some performance improvements ("for" loops, memory management)
• .klib improvements (keep options from .def file, faster inline handling)
• experimental workers API added (see sample)

v0.3 (Jun 2017)

• Preliminary support for x86-64 Windows hosts and targets
• Support for producing native activities on 32- and 64-bit Android targets
• Extended standard library (bitsets, character classification, regular expression)
• Preliminary support for Kotlin/Native library format (.klib)
• Preliminary source-level debugging support (stepping only, no variable inspection)
• Compiler switch -entry to select entry point
• Symbolic backtrace in runtime for unstripped binaries, for all supported targets

v0.2 (May 2017)

• Added support for coroutines
• Fixed most stdlib incompatibilities
• Improved memory management performance
• Cross-module inline function support
• Unicode support independent from installed system locales
• Interoperability improvements
  • file-based filtering in definition file
  • stateless lambdas could be used as C callbacks
  • any Unicode string could be passed to C function
• Very basic debugging support
• Improve compilation and linking performance

v0.1 (Mar 2017)

Initial technical preview of Kotlin/Native