1  struct A
       2  {
       3    A () {}
       4    virtual ~A () {}
       5  };
       6  struct B
       7  {
       8    B () {}
       9    virtual ~B () {}
      10  };
      11  struct C : public A, public B
      12  {
      13    virtual void foo ();
      14    virtual ~C () {};
      15  };
      16  inline void C::foo () {}