1  static int i, j;
       2  
       3  static void __attribute__((noinline,noclone))
       4  foo (void) { i = 1; }
       5  
       6  static void __attribute__((noinline,noclone))
       7  bar (void) { j = 1; }
       8  
       9  typedef void (*fn_t)(void);
      10  void escapeme (fn_t);
      11  fn_t getme (void);
      12  
      13  extern void link_error (void);
      14  
      15  int main()
      16  {
      17    fn_t fn;
      18    escapeme (foo);
      19    fn = getme();
      20  
      21    i = 0;
      22    fn();
      23    if (i != 1)
      24      return 100;
      25    j = 0;
      26    fn();
      27    if (j != 0)
      28      link_error ();
      29    bar();
      30    if (j != 1)
      31      return 200;
      32  
      33    return 0;
      34  }