From c82729e44f2935f72b5cd0e7eb36a87558459663 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Thu, 14 Nov 2013 01:21:00 +0100
Subject: [PATCH] Issue #19437: Fix fold_unaryops_on_constants() of the
 peephole optimizer, clear the exception when PyList_Append() fails

---
 Python/peephole.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Python/peephole.c b/Python/peephole.c
index a49790a60f8..4185462b34a 100644
--- a/Python/peephole.c
+++ b/Python/peephole.c
@@ -275,6 +275,7 @@ fold_unaryops_on_constants(unsigned char *codestr, PyObject *consts, PyObject *v
     len_consts = PyList_GET_SIZE(consts);
     if (PyList_Append(consts, newconst)) {
         Py_DECREF(newconst);
+        PyErr_Clear();
         return 0;
     }
     Py_DECREF(newconst);