https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106421
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- It is undefined but still valid.
pinskia at gcc dot gnu.org via Gcc-bugs Sun, 24 Jul 2022 13:22:26 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106421
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- It is undefined but still valid.