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