https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69701
--- Comment #6 from Andrew Pinski <pinskia at gcc dot gnu.org> --- http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1291 [Accepted at the November, 2020 meeting as part of paper P1787R6 and moved to DR at the February, 2021 meeting.] So there is a defect report in this area after all ....