https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110150
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- basically you are getting optional<optional<.....<int> ...>>>>
pinskia at gcc dot gnu.org via Gcc-bugs Tue, 06 Jun 2023 14:53:01 -0700
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110150
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> --- basically you are getting optional<optional<.....<int> ...>>>>