https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102357
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- https://github.com/cplusplus/draft/commit/219538a7be4f3e71f05070d1a52aa7150505e732 is the editorial change that resolved CWG 2221, but I don't think it's relevant here.