https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102613
--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> --- Looking at what clang++ does, they emit 01.C:1:1: error: static_assert failed "\360\237\230\200" etc. and don't really support -finput-charset=ISO-8859-1 etc. (-finput-charset=utf-8 works).
