https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120600
--- Comment #2 from Halalaluyafail3 <luigighiron at gmail dot com> --- (In reply to Andrew Pinski from comment #1) > I think this is a dup of bug 80005. That bug looks to have been fixed in GCC 10. This is specifically about header name parsing when macros are used for __has_include or the opening parenthesis.