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#include <omp.h>

#include <stdlib.h>

int

main (void)

{

  int i = 0, j = 0, k = 0, l = 0;

#pragma omp parallel num_threads(4) reduction(-:i) reduction(|:k) \

                     reduction(^:l)

  {

    if (i != 0 || k != 0 || l != 0)

#pragma omp atomic

      j |= 1;

    if (omp_get_num_threads () != 4)

#pragma omp atomic

      j |= 2;

    i = omp_get_thread_num ();

    k = 1 << (2 * i);

    l = 0xea << (3 * i);

  }

  if (j & 1)

    abort ();

  if ((j & 2) == 0)

    {

      if (i != (0 + 1 + 2 + 3))

        abort ();

      if (k != 0x55)

        abort ();

      if (l != 0x1e93a)

        abort ();

    }

  return 0;

}