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/* { dg-do compile } */

/* { dg-options "-O -fdump-tree-dce2" } */

/* Verify that we can eliminate the useless conversions to/from

   const qualified pointer types

     this_2 = o_1;

     D.20003_4 = this_2->data_m;

     this_5 = D.20003_4;

     D.20005_6 = this_5->value;

   copyprop should propagate o_1 and D.20003_4 to the loads of data_m

   and value.  dce removes all traces of this.  */

struct Data {

  int get() const { return value; }

  int value;

};

struct Object {

  int operator[](int i) const { return data_m->get(); }

  Data *data_m;

};

int foo(Object&o)

{

  return o[0];

}

/* { dg-final { scan-tree-dump-not ".* = \[^>;\]*;" "dce2" { xfail *-*-* } } } */

/* { dg-final { cleanup-tree-dump "dce2" } } */