https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70167
--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It looks like r247793 fixed an ICE for:
#include <vector>
struct A{int i;};
struct B{};
struct C:A,B{};
struct V {std::vector<C> m;};
V v{{C{{1},{}}}};
It doesn't look obviously related, so do we want to add that testcase?
