Android app with coroutines 0.30.1-eap13 crashes in runtime

java.lang.IllegalStateException: Module with Main dispatcher is missing. Add dependency with required Main dispatcher, e.g. 'kotlinx-coroutines-android'
        at kotlinx.coroutines.Dispatchers.getMain(Dispatchers.kt:61)

kotlinx-coroutines-android is obviously added. Version 0.30.0-eap13 works fine.

[trashkalmar]

If an app is obfustacted with default proguard settings, it crashes in runtime. Here is sample project to reproduce an issue: https://www.dropbox.com/s/eay696h9qmxjl5e/sample.zip?dl=1 UPD: I’ve created PR #662 but it will not work, because @Keep annotation is Android specific. Is the only way to add proguard rules?

-keepnames class kotlinx.coroutines.CoroutineExceptionHandler {}
-keepnames class kotlinx.coroutines.internal.MainDispatcherFactory {}

[jvlad]

The same issue with 0.30.1 in release build only (i. e. when minifyEnabled true is specified)

Android Studio 3.1.2 Build #AI-173.4720617, built on April 14, 2018 JRE: 1.8.0_152-release-1024-b01 x86_64 JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o Mac OS X 10.13.4

Didn’t work:

-keepnames class kotlinx.coroutines.CoroutineExceptionHandler {}
-keepnames class kotlinx.coroutines.internal.MainDispatcherFactory {}

Worked:

-keepnames class kotlinx.** { *; }