https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67094
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- -x c++ means the input is c++ source no matter what the extension.