To be a bit more precise, it seems like the continuation extends from an invocation of cilk_spawn to the first occurrence of cilk_sync after the spawn. Since anything after the cilk_sync cannot be guaranteed to safely run in parallel with work from silk_spawn, it seems that any work stolen can only be executed up to that first sync.
To be a bit more precise, it seems like the continuation extends from an invocation of cilk_spawn to the first occurrence of cilk_sync after the spawn. Since anything after the cilk_sync cannot be guaranteed to safely run in parallel with work from silk_spawn, it seems that any work stolen can only be executed up to that first sync.