libgomp/testsuite/libgomp.c/pr26943-4.c

   1 /* PR c++/26943 */
   2 /* { dg-do run } */
   3
   4 extern int omp_set_dynamic (int);
   5 extern void omp_set_nested (int);
   6 extern int omp_get_thread_num (void);
   7 extern void abort (void);
   8 extern void GOMP_barrier (void);
   9
  10 int a = 8, b = 12, c = 16, d = 20, j = 0, l = 0;
  11 char e[10] = "a", f[10] = "b", g[10] = "c", h[10] = "d";
  12 volatile int k;
  13
  14 int
  15 main (void)
  16 {
  17   int i;
  18   omp_set_dynamic (0);
  19   omp_set_nested (1);
  20 #pragma omp parallel num_threads (2) reduction (+:l) \
  21                      firstprivate (a, b, c, d, e, f, g, h, j)
  22   if (k == omp_get_thread_num ())
  23     {
  24 #pragma omp parallel for shared (a, e) firstprivate (b, f) \
  25                          lastprivate (c, g) private (d, h) \
  26                          schedule (static, 1) num_threads (4) \
  27                          reduction (+:j)
  28       for (i = 0; i < 4; i++)
  29         {
  30           if (a != 8 || b != 12 || e[0] != 'a' || f[0] != 'b')
  31             j++;
  32           GOMP_barrier ();
  33 #pragma omp atomic
  34           a += i;
  35           b += i;
  36           c = i;
  37           d = i;
  38 #pragma omp atomic
  39           e[0] += i;
  40           f[0] += i;
  41           g[0] = 'g' + i;
  42           h[0] = 'h' + i;
  43           GOMP_barrier ();
  44           if (a != 8 + 6 || b != 12 + i || c != i || d != i)
  45             j += 8;
  46           if (e[0] != 'a' + 6 || f[0] != 'b' + i || g[0] != 'g' + i)
  47             j += 64;
  48           if (h[0] != 'h' + i)
  49             j += 512;
  50         }
  51       if (j || a != 8 + 6 || b != 12 || c != 3 || d != 20)
  52         ++l;
  53       if (e[0] != 'a' + 6 || f[0] != 'b' || g[0] != 'g' + 3 || h[0] != 'd')
  54         l += 8;
  55     }
  56   if (l)
  57     abort ();
  58   if (a != 8 || b != 12 || c != 16 || d != 20)
  59     abort ();
  60   if (e[0] != 'a' || f[0] != 'b' || g[0] != 'c' || h[0] != 'd')
  61     abort ();
  62   return 0;
  63 }