1  /* PR middle-end/101437 */
       2  
       3  struct S { int : 1; };
       4  
       5  void
       6  foo (volatile struct S *p)
       7  {
       8    struct S s = {};
       9    *p = s;
      10  }
      11  
      12  void
      13  bar (volatile struct S *p)
      14  {
      15    *p;
      16  }
      17  
      18  void
      19  baz (volatile struct S *p)
      20  {
      21    struct S s;
      22    s = *p;
      23  }
      24  
      25  void
      26  qux (volatile struct S *p, volatile struct S *q)
      27  {
      28    *p = *q;
      29  }