``` class MainDispatcher: CoroutineDispatcher() { ...

# kotlin-native

[yuya_horita]

class MainDispatcher: CoroutineDispatcher() {
    override fun dispatch(context: CoroutineContext, block: Runnable) {
        dispatch_async(dispatch_get_main_queue()) { block.run() }
    }
}

[olonho]

Could you please post self-containing reproducer somewhere?

[yuya_horita]

@olonho
https://github.com/horita-yuya/TempKotlinNativeReport

[yuya_horita]

Here, I prepared simple reproducer for this.

[olonho]

any reasons why your callDelay doesn’t do smth like runBlocking { delay(1000L) }?

[yuya_horita]

Nothing special.

[yuya_horita]

I can use delay with runBlocking, but not with the MainScope .
I just wanted to know why.

[yuya_horita]

Moreover, the reason is TypeCastException.

[yuya_horita]

Maybe, is it related with KotlinLong Objective-C type? not Kotlin.Long. This is just my conjecture

[olonho]

if you just put delay and println to runBlocking it behaves as expected, so it’s likely misleading diagnostics of calling blocking function delay in wrong context

[yuya_horita]

thank you 🙏

[elizarov]

Can you, please, file an issue to https://github.com/Kotlin/kotlinx.coroutines/issues

[yuya_horita]

I reported here 🙏
https://github.com/Kotlin/kotlinx.coroutines/issues/920