I can’t catch exception thrown inside async corout...

# coroutines

[Landerl Young]

I can’t catch exception thrown inside async coroutine. Can anybody helps, thanks ~

I have a complex business logic, which can finally be simplified like this

object CoroutineCrashTest {
    private val scope = GlobalScope + Job()

    fun run() = scope.launch(Dispatchers.Default) {
        doAwaitInside()
    }

    private suspend fun doAwaitInside() {
        try {
            testAsync().await()
        } catch (e: IllegalStateException) {
            // catched but still crash
        }
    }

    private fun testAsync() = scope.async(Dispatchers.Default) {
        throw IllegalStateException("test")
    }
}

When run() is executed, the IllegalStateException will go beyond doAsyncInside and finally be handled by the Thread.unchaughtExceptionHandler. On Android the app crashes, on JVM the console logs the exception.

However if i change the scope declare to

val scope = GlobalScope

Everything works fine, just as expected. Which is really spooky.🤣

BTW:
my kotlin version is 1.3.11
my coroutine version is 1.1.0