local3.c

gcc-you can use this code to learn something about gcc, and inquire further into linux,

// Bug: g++ lies about DECL_CONTEXT, so the backend thinks B::f is not
// function-local.
// Contributed by Jason Merrill <[e-mail]>
// excess errors test

struct A {
  virtual void f () = 0;
};

int main()
{
   struct B : public A {
     void f () { }
   }; 

   B b;
}