https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970
--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Julian Taylor from comment #3) > Similarly useful would be the related __has_attribute, those especially tend > to cause a huge mess of version number checks. That's already supported: https://gcc.gnu.org/gcc-5/changes.html
