https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93161
--- Comment #2 from Wesley Shillingford <wezrule at hotmail dot com> --- Thanks for the swift reply. (In reply to Jonathan Wakely from comment #1) > That paper is more than two years old. The current working draft does > specify the equality operators, e.g. [cmp.strongord] I didn't realise those papers are not revised if there are changes, noted for the future thanks. > > http://wg21.link/P1946 > That paper was approved two months ago and is part of the current working > draft. You are correct, I've now the mailings list, which lists it as approved. Perhaps I misinterpreted Bo Persson's comment. > I don't see a libstdc++ bug here. Yep seems so, I will inform MSVC if this is not fixed next preview (P1946 does not currently appear on their conformance list yet), many thanks!