https://gcc.gnu.org/bugzilla/show_bug.cgi?id=16191
--- Comment #9 from Jonathan Wakely <redi at gcc dot gnu.org> --- CWG 1710 was approved as a defect report in Kona 2016: > Move to accept as Defect Reports the issues in P0575R1 (Core Language "ready" > issues) and apply their proposed resolutions to the C++ working paper. So it's correct that it applies to previous standards too.