https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97778
--- Comment #1 from Janez Zemva <janezz55 at gmail dot com> --- oh, once, again, -std=c++20
janezz55 at gmail dot com via Gcc-bugs Tue, 10 Nov 2020 03:21:20 -0800
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97778
--- Comment #1 from Janez Zemva <janezz55 at gmail dot com> --- oh, once, again, -std=c++20