Hint Resolve tc_val_pointer_nullval.

(* Specifications: *)
Lemma mapsto_tuint_tptr_nullval:
forall sh p t, mapsto sh (Tpointer t noattr) p nullval = mapsto sh size_t p nullval.
Lemma mapsto_null_mapsto_pointer:
forall t sh v,
Archi.ptr64 = false ->
mapsto sh (Tint I32 Signed noattr) v nullval =
mapsto sh (Tpointer t noattr) v nullval.
Lemma mapsto_null_mapsto_pointer:
forall t sh v,
Archi.ptr64 = false ->
mapsto sh tint v nullval =
mapsto sh (tptr t) v nullval.