From 505ff755d704c73ac613d3e8fed02c79c6ae555a Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Sun, 9 Feb 2014 13:33:53 +0200
Subject: Issue #20437: Fixed 21 potential bugs when deleting objects
 references.

---
 Python/sysmodule.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'Python/sysmodule.c')

diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 222630c1693..2f700e65071 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -395,8 +395,7 @@ trace_trampoline(PyObject *self, PyFrameObject *frame,
     result = call_trampoline(tstate, callback, frame, what, arg);
     if (result == NULL) {
         PyEval_SetTrace(NULL, NULL);
-        Py_XDECREF(frame->f_trace);
-        frame->f_trace = NULL;
+        Py_CLEAR(frame->f_trace);
         return -1;
     }
     if (result != Py_None) {
-- 
cgit v1.2.3