Index: Objects/typeobject.c
===================================================================
--- Objects/typeobject.c	(revision 84317)
+++ Objects/typeobject.c	(working copy)
@@ -188,8 +188,8 @@
 
 
 static PyMemberDef type_members[] = {
-    {"__basicsize__", T_INT, offsetof(PyTypeObject,tp_basicsize),READONLY},
-    {"__itemsize__", T_INT, offsetof(PyTypeObject, tp_itemsize), READONLY},
+    {"__basicsize__", T_PYSSIZET, offsetof(PyTypeObject,tp_basicsize),READONLY},
+    {"__itemsize__", T_PYSSIZET, offsetof(PyTypeObject, tp_itemsize), READONLY},
     {"__flags__", T_LONG, offsetof(PyTypeObject, tp_flags), READONLY},
     {"__weakrefoffset__", T_LONG,
      offsetof(PyTypeObject, tp_weaklistoffset), READONLY},
Index: Lib/test/test_types.py
===================================================================
--- Lib/test/test_types.py	(revision 84317)
+++ Lib/test/test_types.py	(working copy)
@@ -243,6 +243,10 @@
         self.assertRaises(TypeError, type, 1, 2)
         self.assertRaises(TypeError, type, 1, 2, 3, 4)
 
+    def test_type_members(self):
+        self.assertGreater(object.__basicsize__, 0)
+        self.assertGreater(str.__itemsize__, 0)
+
     def test_buffers(self):
         self.assertRaises(ValueError, buffer, 'asdf', -1)
         cmp(buffer("abc"), buffer("def")) # used to raise a warning: tp_compare didn't return -1, 0, or 1