Coroutines Riddle: What happens when you execute t...

# coroutines

[Paul Woitaschek]

Coroutines Riddle: What happens when you execute this with coroutines 1.4.0?

inline class A(val value: String)

fun main() {
    runBlocking {
        val aFlow = flowOf(A("Hello"))
        combine(aFlow, aFlow) { a, b ->
            a to b
        }.toList()
    }
}

[tseisel]

I have java.lang.ClassCastException: A cannot be cast to java.lang.String ...
probably an issue with boxed inline classes

[Marcelo Hernandez]

It no longer crashes on certain Android 7 devices? 😆 🤷‍♂️

[Marcelo Hernandez]

I guess I was referring to usage of `combine`; not the actual usage of fun main 🙂

[Paul Woitaschek]

@Marcelo Hernandez Ha, that was my issue 😍

[Marcelo Hernandez]

Seems related to https://github.com/Kotlin/kotlinx.coroutines/issues/2353