1  extern int f1 (void **);
       2  extern void f2 (void *);
       3  
       4  struct s
       5  {
       6    unsigned char field1;
       7    int field2;
       8  };
       9  
      10  static inline struct s *
      11  get_globals (void)
      12  {
      13    struct s * r;
      14    void * rr;
      15  
      16    if (f1 (&rr))
      17      return 0;
      18    r = rr;
      19    if (! r)
      20      {
      21        extern struct s t;
      22        r = &t;
      23      }
      24    r->field1 = 1;
      25    return r;
      26  }
      27  
      28  void
      29  atexit_common (const void *dso)
      30  {
      31    struct s *g = get_globals ();
      32  
      33    if (! g)
      34      return;
      35    if (g->field1)
      36      {
      37        g->field2 = 0;
      38        f2 (g);
      39      }
      40    else
      41      f2 (g);
      42  }