#include <stdio.h>

class Base
  {
  public:
    virtual void m () { puts ("base::m"); }
    virtual void stub () {}
  };

class Derived : public Base
  {
  public:
    virtual void m () { puts ("derived::m"); }
    virtual void stub () {}
  };

int
main ()
{
  Derived derived_local;
  Derived *derivedp = &derived_local;
  Base *basep = &derived_local;

  derivedp->m ();
  basep->m ();

  return 0;
}