When you follow the restrictions on stackless coroutines, the coroutine can, as you mentioned, elide stack allocations for the "child" coroutines. If you want t

When you follow the restrictions on stackless coroutines, the coroutine can, as you mentioned, elide stack allocations for the "child" coroutines. If you want to make a call that can't have its stack allocation elided, you explicitly tell the runtime to spawn it as a top-level task.