1 struct a { 2 char b[100]; 3 }; foo(struct a * a)4 int foo(struct a *a) 5 { 6 if (&a->b) 7 return 1; 8 return 0; 9 } 10 extern void abort (void); main()11 int main() 12 { 13 if (foo((struct a *)0) != 0) 14 abort (); 15 return 0; 16 } 17