1  struct Foo {
       2    int *p;
       3    int *q;
       4  };
       5  
       6  void __attribute__((noinline))
       7  bar (int **x)
       8  {
       9    struct Foo *f = (struct Foo *)x;
      10    *(f->q) = 0;
      11  }
      12  
      13  int foo(void)
      14  {
      15    struct Foo f;
      16    int i = 1, j = 2;
      17    f.p = &i;
      18    f.q = &j;
      19    bar(&f.p);
      20    return j;
      21  }
      22  
      23  extern void abort (void);
      24  int main()
      25  {
      26    if (foo () != 0)
      27      abort ();
      28    return 0;
      29  }