1  /* PR tree-optimization/25501
       2     The PHI merge pass used to try to merge PHI nodes that cannot
       3     actually merged, causing a segfault later.  Make sure that does not
       4     happen any more.  */
       5  
       6  /* { dg-options "-O1 -fdump-tree-mergephi1" } */
       7  
       8  int
       9  foo (int a)
      10  {
      11    int b;
      12    int c;
      13    int d;
      14  
      15    if (a == 2)
      16      b = 3;
      17    else
      18      b = 5;
      19  
      20    c = 7;
      21  
      22    d = 11;
      23  
      24    for (;;)
      25      {
      26        if (d == 5)
      27  	break;
      28  
      29        d = b;
      30      }
      31  
      32    return 13;
      33  }
      34  
      35  /* { dg-final { scan-tree-dump-times "Removing basic block" 0 "mergephi1"} } */