https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103511
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- This seems like a defect in the standard.
redi at gcc dot gnu.org via Gcc-bugs Wed, 01 Dec 2021 00:35:28 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103511
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- This seems like a defect in the standard.