https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88028
--- Comment #5 from Marek Polacek <mpolacek at gcc dot gnu.org> --- And even more: struct S {}; struct A { S s[1]; }; template <typename> struct R { static constexpr auto h = A{S{}}; }; A foo = R<int>::h;