https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90885
--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Eric Gallager from comment #9) > * the "not from the expansion of <iso646.h>’s xor macro" criterion I can see > possibly being a difficulty, due to how many other bugs there are about > gcc's handling of macros from system headers... That's not relevant to C++ because xor is a keyword not a macro.
