https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95561
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> --- Are you using -std=gnu++17 or -std=c++17 ?
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95561
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> --- Are you using -std=gnu++17 or -std=c++17 ?