gcc/testsuite/gcc.dg/20001117-1.c

   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