https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66970
--- Comment #19 from Allan Jensen <linux at carewolf dot com> --- (In reply to felix from comment #18) > So even if this feature is adopted as-is, it will necessitate some changes > in the documentation. And while I can sympathise with claims that this > behaviour is surprising, what are the alternatives? If keywords should count > as built-ins, should __has_builtin(sizeof) expand to 1? Should > __has_builtin(volatile)? No just keywords that begin with __builtin_..