diff options
Diffstat (limited to 'src/libstd/task/spawn.rs')
| -rw-r--r-- | src/libstd/task/spawn.rs | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/libstd/task/spawn.rs b/src/libstd/task/spawn.rs index 8f06fede057..c932a9660c2 100644 --- a/src/libstd/task/spawn.rs +++ b/src/libstd/task/spawn.rs @@ -230,11 +230,15 @@ fn each_ancestor(list: &mut AncestorList, // 'do_continue' - Did the forward_blk succeed at this point? (i.e., // should we recurse? or should our callers unwind?) + let forward_blk = Cell::new(forward_blk); + // The map defaults to None, because if ancestors is None, we're at // the end of the list, which doesn't make sense to coalesce. return do (**ancestors).map_default((None,false)) |ancestor_arc| { // NB: Takes a lock! (this ancestor node) do access_ancestors(ancestor_arc) |nobe| { + // Argh, but we couldn't give it to coalesce() otherwise. + let forward_blk = forward_blk.take(); // Check monotonicity assert!(last_generation > nobe.generation); /*##########################################################* |