die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0);
set_die_type (die, make_cv_type (TYPE_CONST (base_type), 1, base_type, 0), cu);
read_tag_volatile_type (struct die_info *die, struct dwarf2_cu *cu){  struct type *base_type;  if (die->type)    {      return;    }  base_type = die_type (die, cu);  die->type = make_cv_type (TYPE_CONST (base_type), 1, base_type, 0);}