gcc/testsuite/gcc.c-torture/execute/ieee/acc1.c

   1 /* Tail call optimizations would reverse the order of additions in func().  */
   2
   3 double func (const double *array)
   4 {
   5   double d = *array;
   6   if (d == 0.0)
   7     return d;
   8   else
   9     return d + func (array + 1);
  10 }
  11
  12 int main ()
  13 {
  14   double values[] = { 0.1e-100, 1.0, -1.0, 0.0 };
  15   if (func (values) != 0.1e-100)
  16     abort ();
  17   exit (0);
  18 }