https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58938
--- Comment #19 from Jonathan Wakely <redi at gcc dot gnu.org> --- A prototype implementation that doesn't rely on atomics: https://gcc.gnu.org/ml/gcc-patches/2016-09/msg01526.html https://gcc.gnu.org/ml/gcc-patches/2016-09/msg01546.html (both patches are needed).
