https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117985
--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Also add this (making ~_Vector_base constexpr): it seems to have some effect
(g++12 crashes with this but not with #c2):
```
// PR c++/117985
struct _Vector_impl {
constexpr _Vector_impl() {}
};
struct _Vector_base {
constexpr ~_Vector_base() {}
_Vector_impl _M_impl;
};
struct vector : private _Vector_base {};
struct string {
string();
};
struct VEC {
vector pane{};
};
struct FOO {
VEC screen[1]{};
string debug_name;
};
int
main ()
{
FOO{};
}
```
