https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64883
--- Comment #54 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Iain Sandoe from comment #53) > well, the point was that we can file a bug/radar against current system > headers using things outside the implementation space, but that won't fix > things retrospectively. Why do we need to fix it? It's not our problem.