IssueTracker

Hi, thanks for report!

Could you attach a bit more information about the heap at this point (e.g. a heap dump) if the leak is not reproducible in trivial project?

Attached!

I looked into the heap dump, seems like we are not disposing certain snapshots. Current snapshot id seems to be around 42k, but we have 108, 116 and 14123 in invalid SnapshotIdSet for current global snapshot. It is hard to figure out what caused it without repro though, as those snapshots seem to be already collected by GC.

I managed to repro it after a bunch of debugging. The bad news is that it's caused when using Coil within a LazyColumn, so that library is doing something that's causing you to leak snapshots... somehow.

Repro:

1. Add implementation io.coil-kt:coil-compose:2.1.0 to build.gradle
2. Add the following composable:

@Composable fun Leak() {
    val lazyListState = rememberLazyListState()
    val items by remember { mutableStateOf(List(10000) { it }) }

    LazyColumn(state = lazyListState) {
        items(items) {
            Box(Modifier.fillMaxWidth()) {
                AsyncImage(
                    model = "https://i.picsum.photos/id/104/200/200.jpg?hmac=3XxEVXVjwoI45-6sum_iMwNZ52GT-SJacVWr4fh4hqI",
                    contentDescription = null
                )
            }
        }
    }
}

3. Scroll
4. Memory 📈