// Bug: catching pointers by reference doesn't work right.

extern "C" int printf (const char *, ...);

struct E {
  int x;
  E(int i) { x = i; };
};

int main()
{
  try {
    E *p = new E(5);
    throw p;
  }

  catch (E *&e) {
    printf ("address of e is 0x%lx\n", (long)e);
    return !(long(e) != 5 && e->x == 5);
  }
  return 2;
}
