libgomp/testsuite/libgomp.c/pr26943-2.c

   1 /* PR c++/26943 */
   2 /* { dg-do run } */
   3
   4 extern int omp_set_dynamic (int);
   5 extern void abort (void);
   6
   7 int a = 8, b = 12, c = 16, d = 20, j = 0;
   8 char e[10] = "a", f[10] = "b", g[10] = "c", h[10] = "d";
   9
  10 int
  11 main (void)
  12 {
  13   int i;
  14   omp_set_dynamic (0);
  15 #pragma omp parallel for shared (a, e) firstprivate (b, f) \
  16                          lastprivate (c, g) private (d, h) \
  17                          schedule (static, 1) num_threads (4) \
  18                          reduction (+:j)
  19   for (i = 0; i < 4; i++)
  20     {
  21       if (a != 8 || b != 12 || e[0] != 'a' || f[0] != 'b')
  22         j++;
  23 #pragma omp barrier     /* { dg-warning "may not be closely nested" } */
  24 #pragma omp atomic
  25       a += i;
  26       b += i;
  27       c = i;
  28       d = i;
  29 #pragma omp atomic
  30       e[0] += i;
  31       f[0] += i;
  32       g[0] = 'g' + i;
  33       h[0] = 'h' + i;
  34 #pragma omp barrier     /* { dg-warning "may not be closely nested" } */
  35       if (a != 8 + 6 || b != 12 + i || c != i || d != i)
  36         j += 8;
  37       if (e[0] != 'a' + 6 || f[0] != 'b' + i || g[0] != 'g' + i)
  38         j += 64;
  39       if (h[0] != 'h' + i)
  40         j += 512;
  41     }
  42   if (j || a != 8 + 6 || b != 12 || c != 3 || d != 20)
  43     abort ();
  44   if (e[0] != 'a' + 6 || f[0] != 'b' || g[0] != 'g' + 3 || h[0] != 'd')
  45     abort ();
  46   return 0;
  47 }