1  #ifdef __OPTIMIZE__
       2  extern void undef (void);
       3  
       4  void bar (unsigned x) { }
       5  void baz (unsigned x) { }
       6  
       7  extern inline void foo (int a, int b)
       8  {
       9    int c = 0;
      10    while (c++ < b)
      11      (__builtin_constant_p (a) ? ((a) > 20000 ? undef () : bar (a)) : baz (a));
      12  }
      13  #else
      14  void foo (int a, int b)
      15  {
      16  }
      17  #endif
      18  
      19  int main (void)
      20  {
      21    foo(10, 100);
      22    exit (0);
      23  }