libgomp/testsuite/libgomp.c/pr43893.c

   1 /* PR c/43893 */
   2 /* { dg-do run } */
   3
   4 extern void abort (void);
   5
   6 int
   7 main ()
   8 {
   9   int c;
  10   unsigned int i;
  11   int j;
  12   c = 0;
  13 #pragma omp parallel for reduction(+:c)
  14   for (i = 0; i < 1; i++)
  15     c++;
  16   if (c != 1)
  17     abort ();
  18   c = 0;
  19 #pragma omp parallel for reduction(+:c)
  20   for (i = 0; i <= 0; i++)
  21     c++;
  22   if (c != 1)
  23     abort ();
  24   c = 0;
  25 #pragma omp parallel for reduction(+:c)
  26   for (j = - __INT_MAX__ - 1; j < - __INT_MAX__; j++)
  27     c++;
  28   if (c != 1)
  29     abort ();
  30   c = 0;
  31 #pragma omp parallel for reduction(+:c)
  32   for (j = - __INT_MAX__ - 1; j <= - __INT_MAX__ - 1; j++)
  33     c++;
  34   if (c != 1)
  35     abort ();
  36   c = 0;
  37 #pragma omp parallel for reduction(+:c)
  38   for (i = 2U * __INT_MAX__ + 1; i > 2U * __INT_MAX__; i--)
  39     c++;
  40   if (c != 1)
  41     abort ();
  42   c = 0;
  43 #pragma omp parallel for reduction(+:c)
  44   for (i = 2U * __INT_MAX__ + 1; i >= 2U * __INT_MAX__ + 1; i--)
  45     c++;
  46   if (c != 1)
  47     abort ();
  48   c = 0;
  49 #pragma omp parallel for reduction(+:c)
  50   for (j = __INT_MAX__; j > __INT_MAX__ - 1; j--)
  51     c++;
  52   if (c != 1)
  53     abort ();
  54   c = 0;
  55 #pragma omp parallel for reduction(+:c)
  56   for (j = __INT_MAX__; j >= __INT_MAX__; j--)
  57     c++;
  58   if (c != 1)
  59     abort ();
  60   return 0;
  61 }