libgomp/testsuite/libgomp.c/omp-nested-1.c

   1 // { dg-do run }
   2
   3 extern void abort(void);
   4 #define N 1000
   5
   6 int foo()
   7 {
   8   int i = 0, j;
   9
  10   #pragma omp parallel for num_threads(2) shared (i)
  11   for (j = 0; j < N; ++j)
  12     {
  13       #pragma omp parallel num_threads(1) shared (i)
  14       {
  15         #pragma omp atomic
  16         i++;
  17       }
  18     }
  19
  20   return i;
  21 }
  22
  23 int main()
  24 {
  25   if (foo() != N)
  26     abort ();
  27   return 0;
  28 }