"Compiling" version
diff --git a/Include/listobject.h b/Include/listobject.h
index 5ff057e..4a2bd72 100644
--- a/Include/listobject.h
+++ b/Include/listobject.h
@@ -14,6 +14,11 @@
 returned item's reference count.
 */
 
+typedef struct {
+	OB_VARHEAD
+	object **ob_item;
+} listobject;
+
 extern typeobject Listtype;
 
 #define is_listobject(op) ((op)->ob_type == &Listtype)
@@ -25,3 +30,6 @@
 extern int inslistitem PROTO((object *, int, object *));
 extern int addlistitem PROTO((object *, object *));
 extern int sortlist PROTO((object *));
+
+/* Macro, trading safety for speed */
+#define GETLISTITEM(op, i) ((op)->ob_item[i])