Use PyTuple_Pack instead of Py_BuildValue.
diff --git a/Python/compile.c b/Python/compile.c
index 61e22d1..5e7f35d 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -1489,8 +1489,7 @@
 	int arg;
 
         /* necessary to make sure types aren't coerced (e.g., int and long) */
-        /* XXX should use: t = PyTuple_Pack(2, o, o->ob_type); */
-        t = Py_BuildValue("(OO)", o, o->ob_type);
+        t = PyTuple_Pack(2, o, o->ob_type);
         if (t == NULL)
             return -1;