Are returns inside composable currently bugged (alpha07)? I'm getting a lot of

java.lang.IllegalStateException: Start/end imbalance

when using them Wrapping the whole follow code into a conditional block instead fixes the issue

We haven’t seen any issues - can you create a simple repro? This could be a runtime issue or a compiler issue

No problem, will try to do that this weekend

I also encountered this error as well.. I had a composable:

@Composable
fun MyComposable(
    myStateList: List<MyState>, 
    ...,
) {
    // ------- This here is causing the error
    val transformedMyState = myStateList.map {
        myTransformation(it)
    }
    // ------- Removing the code above, also removes the error
    LazyRowForIndexed(transformedMyState) {
        ...
    }
}

It was perfectly working on

alpha06

and only encountered the error after migrating to

alpha07

. So in the end I settled to:

@Composable
fun MyComposable(
    myStateList: List<MyState>, 
    ...,
) {
    LazyRowForIndexed(
        myStateList.map {
            myTransformation(it)
        }
    ) {
        ...
    }
}

I then no longer get the error... 🤔

wow, that’s pretty curious

Will try and recreate it... ill do after work and share the link here...

thank you

Hi @Leland Richardson [G], I'm unsuccessful in recreating the error.. it seems that the error wasn't cause by the things I mentioned above... hmmm... I would try and backtrack my changes..

@Leland Richardson [G] Sorry for the delay, I managed to reproduce it with the following minified snippet:

@Composable
fun BuggedComposable(
) {
    Surface {
        Box(modifier = Modifier.fillMaxSize()) {
            val state = mutableStateOf<String?>(null)
            val title = state.value ?: return@Box
        }
    }
}

Removing the

?: return@Box

fixes the crash. Do you want me to file a bug with this? (Using alpha07 and kotlin 1.4.0)

oh, nice. thanks so much for this repro

will do

thank you!

Any news on this @Leland Richardson [G] ?

Again happening on 1.4