Hint Resolve isptr_is_pointer_or_null.

Definition add_ptr_int  {cs: compspecs}  (ty: type) (v: val) (i: Z)

(* Specifications: *)
Lemma add_ptr_int_offset: forall {cs: compspecs} t v n, repable_signed (sizeof t) -> repable_signed n ->
Lemma typed_false_cmp: forall op i j , typed_false tint (force_val (sem_cmp op ti
Lemma typed_true_cmp: forall op i j, typed_true tint (force