https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90590
--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Marek Polacek from comment #4) > Suppressing the warning when the enumerator comes from a system header > should be fairly easy using in_system_header_at. Yes, I got that working myself already. > But for the "use reserved > names" requirement -- should we just check whether the name of an enumerator > starts with an '_'? No, because "_" and "_foo" are not reserved names. I suggest "_[_A-Z]" i.e. underscore followed by either another underscore or uppercase letter. In practice, for libstdc++'s purposes, it might be enough to check for just "_[_S]" but I'd have to double-check that.
