1  /* { dg-do compile } */
       2  /* { dg-options "-O -fdump-tree-dse1-details" } */
       3  
       4  extern void abort(void);
       5  void foo(int *p)
       6  {
       7    while (1)
       8     {
       9        *p = 1;
      10        *p = 0;
      11     }
      12  }
      13  void bar(int *p)
      14  {
      15    *p = 1;
      16    *p = 0;
      17    abort ();
      18  }
      19  
      20  /* { dg-final { scan-tree-dump-times "Deleted dead store" 2 "dse1" } } */