Hello community, hope you all doing well. I am getting compilation error by this code. This code written in BaseFragment, and I am trying to use it in the child. The error I am getting is:

e: org.jetbrains.kotlin.codegen.CompilationException: Back-end (JVM) Internal error: Couldn't inline method call 'collectInMainBy' into

So why it can’t be inlined?

inline fun <reified T> Flow<T>.collectInMainBy(
    crossinline onCollect: suspend (T) -> Unit,
    crossinline onFailure: suspend (Throwable) -> Unit = { Timber.e(it, tag) }
) {
    onEachCatching(onCollect, onFailure).launchInMain(lifecycleScope)
}

inline fun <reified T> Flow<T>.onEachCatching(
    crossinline onEach: suspend (T) -> Unit,
    crossinline onFailure: suspend (Throwable) -> Unit
) : Flow<T> {
    return onEach {
        onEach(it)
    }.catch {
        onFailure(it)
    }
}

fun <T> Flow<T>.launchInMain(scope: CoroutineScope): Job = scope.launch(Dispatchers.Main) {
    collect()
}

Call side:

buttonProceed.clicks().collectInMainBy(
    onCollect = { viewModel.proceedButtonClicked() }
)

I think onFailure default block is not suspend.

I solved this problem by replacing

crossinline

to

noinline

. Dunno why with

crossinline

modificator the

onFailure

block default implementation couldn’t be inlined.