https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102181
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- It compiles with -std=gnu++20 but not -std=c++20
redi at gcc dot gnu.org via Gcc-bugs Thu, 02 Sep 2021 14:36:55 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102181
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- It compiles with -std=gnu++20 but not -std=c++20