https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96489
--- Comment #8 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to DV Henkel-Wallace from comment #7) > Thanks. That is clear. > > BTW FWIW, defining <=> myself and then defining == default does appear to do > what I want (i.e. I don't have to use. = default with both operators). Right, that's what I said (or tried to say) in comment 3: "I think to get what you expect, you need to either define <=> as defaulted, or define == as defaulted." Either works fine, it doesn't need to be both. > saw that cppreference claims that `== default` will do `<=> < 0` -- though I > know that site isn't authoritative, merely close to authorotative. https://en.cppreference.com/w/cpp/language/default_comparisons seems correct, although it notes: This section is incomplete Reason: Defaulted equality comparisons
