Kotlin 1.1.4-3 hotfix released

New hotfix for Kotlin 1.1.4 released; giant amount of bugs fixed
31 August 2017   947

A hotfix for latest Kotlin version 1.1.4 has been released. Let's see what it fixes.

List of fixed bugs:

  • SamWithReceiver compiler plugin not used by IntelliJ for .kt files
  • Gradle Kotlin Plugin does not work with the gradle java-library plugin
  • Console spam when opening idea-community project in debug IDEA
  • [Coroutines + Kapt3] Assertion failed in ClassClsStubBuilder.createNestedClassStub
  • kapt3 & Parcelize: Compilation error
  • Kotlin 1.1.4 noarg plugin breaks with sealed classes
  • Kapt error after updating to 1.1.4 - stub adds type parameters where there are none
  • Mocking of final named suspend methods with mockito fails
  • kapt3: not always including argument to @javax.inject.Named in generated stubs
  • "Convert to expression body" is not shown in 162 / AS23 branches for multi-liners
  • NPE caused by Map<String, Boolean>?.get
  • PerModulePackageCacheService calls getOrderEntriesForFile() for every file, even those that can't affect Kotlin resolve
  • Provide an opt-out flag for separate classes directories (Gradle 4.0+)
  • if an imported library already exists it should be redetected during gradle import

Learn more at GitHub

JetBrains to Roll Out Kotlin/Native 0.8

Version 0.8 of Kotlin/Native brings new features and bug fixes
13 July 2018   137

The project team of Kotlin / Native introduced the release of version 0.8. Corrections and additions have concerned the security of multithreaded programming, the expansion of library functionality and support for iOS devices. As always, alot of bugs are fixed.


Implemented the concept of object freezing

object Config {
  var width: Int = 10
  private set
  init {
    val file = fopen("config.txt", "r")
    if (file != null) {
              try {
              val buffer = ByteArray(2 * 1024)
                 while (true) {
                 val nextLine = fgets(buffer.refTo(0), buffer.size, file)?.toKString()
                 if (nextLine == null || nextLine.isEmpty()) break
                 val records = nextLine.split('=')
                 if (records.size != 2) continue
                 val key = records[0].trim()
                 val value = records[1].trim()
                 when (key) {
                         "width" -> width = value.toInt()
             } finally {

This code considers the configuration file and will later receive the Config.width property. 

The Config file itself is divided for any number of threads or vorkers. After publication, the object is frozen and any attempt to change it will result in an exception (InvalidMutabilityException).

The second peculiarity of parallelism in the Kotlin / Native project is indivisible values and references. Let's add an image:

object Config {
private val icon_ = AtomicReference()
val icon: Image
get() = icon_.get()!!
fun updateIcon(file: String) {
val imageData = Image(file)
icon_.compareAndSwap(icon_.get(), imageData.freeze())

All information about the icon in the AtomicReference is frozen. Any changes are indivisible and similar information is visible to each client.

Kotlin Libraries

Starting v 0.8, the standard library (kotlin. *) is compatible with other platforms. Standard number generator and the function of mixing the collections are designed to eliminate the use of sharpened for a specific platform API. As an experiment, the project supports other libraries, for example, kotlinx.coroutines, kotlinx.serialization, and also the Ktor HTTP client.

Changes for iOS devices

Fixed issues with the publication in the App Store and the initialization of the platform. Support for the 32-bit ARM architecture of iOS processors, which allows using Kotlin / Native on older devices from Apple added.