https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65146
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to H.J. Lu from comment #7) > We need to first decide what we want out of i386 atomic. > Please send a post to > > https://groups.google.com/forum/#!forum/ia32-abi Did this ever get taken to the ABI group? GCC and Clang seem to give different results, so we have implementation divergence causing ABI incompatibilities.