template<class T>
struct container
{
  T m;
  void forward_member_function() { m.member_function(); }
};

struct a
{
  void member_function() {}
};

struct b
{
};

struct __declspec(dllexport) my_class : public container<b>
{
};

void test_main()
{
  container<a> c;
  c.forward_member_function();
  container<b> d;
}