https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107980
--- Comment #4 from Andrew Pinski <pinskia at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #3) > I think we should warn but how to warn is going to have to special case the > macro I think. But saying that I do think it is valid C2X code if you take the C2X standard seperately from the older standards.