die->type = type;
set_die_type (die, type, cu);
read_tag_reference_type (struct die_info *die, struct dwarf2_cu *cu){  struct comp_unit_head *cu_header = &cu->header;  struct type *type;  struct attribute *attr;  if (die->type)    {      return;    }  type = lookup_reference_type (die_type (die, cu));  attr = dwarf2_attr (die, DW_AT_byte_size, cu);  if (attr)    {      TYPE_LENGTH (type) = DW_UNSND (attr);    }  else    {      TYPE_LENGTH (type) = cu_header->addr_size;    }  die->type = type;}