https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100903
--- Comment #11 from M Welinder <terra at gnome dot org> --- >/home/jwakely/gcc/14/include/c++/14.0.0/compare:160:5: note: declared here > 160 | operator<=>(partial_ordering, __cmp_cat::__not_literal_zero auto) > = delete; > | ^~~~~~~~ I don't think we can hope for much more than this. That's almost readable! You might want to look at https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95242#c2 and following comments.