https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101886
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> --- This use of 'auto' was not accepted into C++20, so fixing this bug in the vestigial Concepts TS implementation is a low priority.
jason at gcc dot gnu.org via Gcc-bugs Sun, 27 Mar 2022 10:53:30 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101886
--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> --- This use of 'auto' was not accepted into C++20, so fixing this bug in the vestigial Concepts TS implementation is a low priority.