https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105067
Bug ID: 105067 Summary: ICE: in operator[], at vec.h:889 Product: gcc Version: 12.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: hewillk at gmail dot com Target Milestone: --- 12 Regression template<class> template<class T> concept C = requires { typename T::type; }; template <C> class S {}; S<void> s; https://godbolt.org/z/YjazY4ajv