https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69204
--- Comment #9 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to bugzillas from comment #8) > (In reply to bugzillas from comment #7) > > I did some bisecting. r219770 is the commit which breaks my example. > > ...or just exposes an already existing failure. No it just exposes the problem of using futex system calls with TSAN.