http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59305
--- Comment #4 from Jack Howarth <howarth at nitro dot med.uc.edu> --- Created attachment 31452 --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=31452&action=edit assembly file for gcc.dg/atomic/c11-atomic-exec-5.c -O0 on darwin12