http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40362
--- Comment #13 from Andrew Pinski <pinskia at gcc dot gnu.org> 2012-12-29 21:32:06 UTC --- (In reply to comment #12) > ws = gomp_ptrlock_get (&ws->next_ws); This is really just: ws = gomp_ptrlock_get (ws+offsetof(next_ws)); So there are no loads there. This is a race condition only if we go from non-null to null which cannot happen here. TSAN cannot detect that as it does not understand that case which is a complex case to understand Also does TSAN understand futex's which might the other thing throwing it off just as Hellgrtind and drd was thrown off by it.
