[Bug sanitizer/69204] ThreadSanitizer: False positive on std::promise usage

[pinskia at gcc dot gnu.org]

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.