Use ptrdiff_ikind instead of ILong for ana.arrayoob checks

src/cdomain/value/cdomains/arrayDomain.ml

@@ -834,7 +834,7 @@ end
 let array_oob_check ( type a ) (module Idx: IntDomain.Z with type t = a) (x, l) (e, v) =
   if GobConfig.get_bool "ana.arrayoob" then (* The purpose of the following 2 lines is to give the user extra info about the array oob *)
     let idx_before_end = Idx.to_bool (Idx.lt v l) (* check whether index is before the end of the array *)
-    and idx_after_start = Idx.to_bool (Idx.ge v (Idx.of_int Cil.ILong Z.zero)) in (* check whether the index is non-negative *)
+    and idx_after_start = Idx.to_bool (Idx.ge v (Idx.of_int (Cilfacade.ptrdiff_ikind ()) Z.zero)) in (* check whether the index is non-negative *)
     (* For an explanation of the warning types check the Pull Request #255 *)
     match(idx_after_start, idx_before_end) with
     | Some true, Some true -> (* Certainly in bounds on both sides.*)