1  /* { dg-do run } */
       2  /* { dg-options "-O2 -finstrument-functions" } */
       3  /* { dg-require-effective-target return_address } */
       4  
       5  extern void abort (void);
       6  extern void exit (int);
       7  
       8  double
       9  foo (double a, double b)
      10  {
      11    double c;
      12    if (0.0 < a)
      13      c = a;
      14    else if (b > 0.0)
      15      c = 0.0;
      16    else
      17      return 0;
      18    return 2.0 * (b - c);
      19  }
      20  
      21  int main ()
      22  {
      23    if (foo (1.0, 4.0) != 6.0)
      24      abort ();
      25    exit (0);
      26  }
      27  
      28  /* Abort on non-NULL CALL_SITE to ensure that __builtin_return_address
      29     was expanded properly.  */
      30  void __attribute__((no_instrument_function))
      31  __cyg_profile_func_enter(void *this_fn, void *call_site)
      32  {
      33    if (call_site == (void *)0)
      34      abort ();
      35  }
      36  
      37  void __attribute__((no_instrument_function))
      38  __cyg_profile_func_exit(void *this_fn, void *call_site)
      39  {
      40    if (call_site == (void *)0)
      41      abort ();
      42  }
      43