PyTuple_Pack() was missing va_end() in its error branch which lead to a resource leak.

tiran · tiran · commit c4fe3fed6edd · 2012-09-10T02:55:13.000+02:00
diff --git a/Objects/tupleobject.c b/Objects/tupleobject.c
@@ -210,8 +210,10 @@ PyTuple_Pack(Py_ssize_t n, ...)
 
     va_start(vargs, n);
     result = PyTuple_New(n);
-    if (result == NULL)
+    if (result == NULL) {
+        va_end(vargs);
         return NULL;
+    }
     items = ((PyTupleObject *)result)->ob_item;
     for (i = 0; i < n; i++) {
         o = va_arg(vargs, PyObject *);
