https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93479
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Barry Revzin from comment #0) > The check for __3way_builtin_ptr_cmp needs to reject arrays, since the > expression declval<T>() <=> declval<U>() does not resolve to a built-in > operator comparing pointers (it doesn't resolve to any operator). I think it should require declval<T>() <=> declval<U>() to be valid. I forgot to actually check that.
