https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65364
--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- See https://gcc.gnu.org/ml/gcc-patches/2015-02/msg00557.html for a patch and https://gcc.gnu.org/ml/gcc-patches/2015-02/msg00737.html for some analysis for darwin.
