lookup12.c

this is a gcc file, you can download it and learn its usetility, for further detail please look at t

// Build don't link:
// Origin: Mark Mitchell <[e-mail]>

struct B {
  struct X {};
};


struct D : public B {
  void X();

  struct X x;

  void f();
};


void D::f() 
{
  struct X y;
}