1  /* { dg-do compile } */
       2  /* { dg-options "-O3 -fdump-tree-ealias-graph" } */
       3  
       4  struct S
       5  {
       6    long m;
       7  };
       8  
       9  struct S
      10  fn1 (struct S *a)
      11  {
      12    if (a->m)
      13      a->m |= 2;
      14    return *a;
      15  }