1  extern void abort(void);
       2  typedef long GLint;
       3  void aglChoosePixelFormat (const GLint *);
       4  
       5  void
       6  find (const int *alistp)
       7  {
       8    const int *blist;
       9    int list[32];
      10    if (alistp)
      11      blist = alistp;
      12    else
      13      {
      14        list[3] = 42;
      15        blist = list;
      16      }
      17    aglChoosePixelFormat ((GLint *) blist);
      18  }
      19  
      20  void
      21  aglChoosePixelFormat (const GLint * a)
      22  {
      23    int *b = (int *) a;
      24    if (b[3] != 42)
      25      abort ();
      26  }
      27  
      28  int
      29  main (void)
      30  {
      31    find (0);
      32    return 0;
      33  }