From 41c9f880d8bf59e80b6ca5963c3e9e2b17386736 Mon Sep 17 00:00:00 2001
From: Alex Martelli <aleaxit@gmail.com>
Date: Tue, 22 Apr 2003 09:24:48 +0000
Subject: [PATCH] fixed a potential refcount bug (thanks Raymond!).

---
 Python/bltinmodule.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Python/bltinmodule.c b/Python/bltinmodule.c
index 0eb835793a0..6c1a3d290ca 100644
--- a/Python/bltinmodule.c
+++ b/Python/bltinmodule.c
@@ -1824,10 +1824,10 @@ builtin_sum(PyObject *self, PyObject *args)
 		if (PyObject_TypeCheck(result, &PyBaseString_Type)) {
 			PyErr_SetString(PyExc_TypeError,
 				"can't sum strings [use ''.join(seq) instead]");
-			Py_DECREF(result);
 			Py_DECREF(iter);
 			return NULL;
 		}
+		Py_INCREF(result);
 	}
 
 	for(;;) {