libgomp/testsuite/libgomp.c/nestedfn-1.c

   1 /* { dg-do run } */
   2
   3 #include <omp.h>
   4 #include <stdlib.h>
   5
   6 int
   7 main (void)
   8 {
   9   int a = 1, b = 2, c = 3;
  10   void
  11   foo (void)
  12   {
  13     int l = 0;
  14 #pragma omp parallel shared (a) private (b) firstprivate (c) \
  15                      num_threads (2) reduction (||:l)
  16     {
  17       if (a != 1 || c != 3) l = 1;
  18 #pragma omp barrier
  19       if (omp_get_thread_num () == 0)
  20         {
  21           a = 4;
  22           b = 5;
  23           c = 6;
  24         }
  25 #pragma omp barrier
  26       if (omp_get_thread_num () == 1)
  27         {
  28           if (a != 4 || c != 3) l = 1;
  29           a = 7;
  30           b = 8;
  31           c = 9;
  32         }
  33       else if (omp_get_num_threads () == 1)
  34         a = 7;
  35 #pragma omp barrier
  36       if (omp_get_thread_num () == 0)
  37         if (a != 7 || b != 5 || c != 6) l = 1;
  38 #pragma omp barrier
  39       if (omp_get_thread_num () == 1)
  40         if (a != 7 || b != 8 || c != 9) l = 1;
  41     }
  42     if (l)
  43       abort ();
  44   }
  45   foo ();
  46   if (a != 7)
  47     abort ();
  48   return 0;
  49 }