http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49204
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-01 00:25:31 UTC --- Still outstanding tasks: timed waiting functions do nto return future_status::deferred if the shared state contains a deferred function (requires an additional virtual function to be added to the vtable) check system load when deciding whether to use async or deferred policy
