[Bug c++/95319] [10/11 Regression] Regression from gcc9.3 when inserting into a vector with an initializer list. Error: a GNU-style designated initializer for class

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95319

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org

--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
Confirmed, started with r10-6388-ge98ebda074bf8fc5.

Reduced test-case:

$ cat pr95319.ii
namespace std {
template <class> class initializer_list {
  int *_M_array;
  unsigned long _M_len;
};
template <int _Nm> struct A { typedef int _Type[_Nm]; };
template <int _Nm> struct B { typename A<_Nm>::_Type _M_elems; };
class C {
public:
  void insert(int, B<3>);
  void insert(int, initializer_list<B<3>>);
};
} // namespace std
int a;
int
main() {
  using ArrayVector = std::C;
  auto b = ArrayVector();
  b.insert(a, {{2}});
  return 0;
}