https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79671
--- Comment #77 from Jonathan Wakely <redi at gcc dot gnu.org> --- It was rejected in 2010, but see http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#1116 for the later discussion, and: "[Adopted at the June, 2016 meeting as document P0137R1.]" Which Jason already pointed to in Comment 72.
