https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102257
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Andrew Pinski from comment #2) > See https://wg21.link/cwg1228 this might be invalid code and GCC is correct > in rejecting it. So dup of PR 84849 ?