"Compiling" version
diff --git a/Include/tupleobject.h b/Include/tupleobject.h
index d22e6b9..46a0031 100644
--- a/Include/tupleobject.h
+++ b/Include/tupleobject.h
@@ -14,6 +14,11 @@
 returned item's reference count.
 */
 
+typedef struct {
+	OB_VARHEAD
+	object *ob_item[1];
+} tupleobject;
+
 extern typeobject Tupletype;
 
 #define is_tupleobject(op) ((op)->ob_type == &Tupletype)
@@ -22,3 +27,6 @@
 extern int gettuplesize PROTO((object *));
 extern object *gettupleitem PROTO((object *, int));
 extern int settupleitem PROTO((object *, int, object *));
+
+/* Macro, trading safety for speed */
+#define GETTUPLEITEM(op, i) ((op)->ob_item[i])