1  /* { dg-do run } */
       2  /* { dg-additional-options "-ftree-parallelize-loops=2" } */
       3  
       4  void abort (void);
       5  
       6  unsigned int g_sum = 1;
       7  
       8  unsigned int x[500][500];
       9  
      10  void __attribute__((noinline,noclone))
      11  parloop (int N)
      12  {
      13    int i, j;
      14    unsigned int sum;
      15  
      16    /* Double reduction is detected, outer loop is parallelized.  */
      17    sum = 0;
      18    for (i = 0; i < N; i++)
      19      for (j = 0; j < N; j++)
      20        sum += x[i][j];
      21  
      22    g_sum = sum;
      23  }
      24  
      25  int
      26  main (void)
      27  {
      28    x[234][432] = 2;
      29  
      30    parloop (500);
      31  
      32    if (g_sum != 2)
      33      abort ();
      34  
      35    return 0;
      36  }