(** Fourth, the position of each field respects its alignment. *)

(* Specifications: *)
Lemma field_offset_aligned:
forall env id fld ofs ty,
field_offset env id fld = OK ofs -> field_type id fld = OK ty ->
(alignof env ty | ofs).
Lemma field_offset_aligned:
forall env id fld ofs ty,
field_offset env id fld = OK ofs -> field_type id fld = OK ty ->
(alignof env ty | ofs).