[Bug c++/94951] [8/9/10/11 Regression] dereferencing type-punned pointer will break strict-aliasing rules when using super class for a template type

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94951

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Slightly simplified testcase:
struct A { unsigned a[32]; };
template <int N>
struct B : public A
{
  static B<N> foo () { B<N> t; t.a[0] = 4; return t; }
};