1int a = 1, b;
2
3g () { return 0; }
4h (x) {}
5
6f ()
7{
8  if (g () == -1)
9    return 0;
10  a = g ();
11  if (b >= 1)
12    h (a);
13  return 0;
14}
15
16main ()
17{
18  f ();
19  if (a != 0)
20    abort ();
21  exit (0);
22}
23