1  /* PR tree-optimization/98455 */
       2  /* { dg-do compile } */
       3  /* { dg-options "-O1 -fno-tree-dce --param case-values-threshold=1" } */
       4  
       5  void
       6  n4 (int io, int vb)
       7  {
       8    double uc[2] = { 1.0, 2.0, };
       9  
      10    if (io == 0)
      11      uc[0] = 0.0;
      12  
      13    for (;;)
      14      if (io == 0)
      15        if (vb == 0)
      16          uc[0] = uc[1];
      17        else if (vb == 1)
      18          uc[1] = 0.0;
      19  }