https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99742
Bug ID: 99742 Summary: Parameter packs not expanded with nested requirements Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: hewillk at gmail dot com Target Milestone: --- template <bool... B> concept C = (requires { requires B; } && ...); static_assert(C<true, true>); gcc rejects this code. https://godbolt.org/z/c6sEq5KEs