https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Matt Clarkson from comment #2) > Because wehen I compile with clang against the libstdc++ the problem will > still occur and __GNUC__ will not be defined. This happens on any distro > where GCC is the default but ships clang as an alternative compiler. Not something which GCC supports directly. You need to ask clang folks about that :). Anyways 4.9.x is no longer maintained; there will be no new releases after the current release of 4.9.4 (which happened two years after the first release of 4.9.0).