From 8e03b4cae0cf37aac52827523fb3cf56894ffdf9 Mon Sep 17 00:00:00 2001
From: Jesus Cea <jcea@jcea.es>
Date: Mon, 10 Sep 2012 22:57:34 +0200
Subject: [PATCH] #15676: mmap: add empty file check prior to offset check <-
 Previous patch was incomplete (fix 2)

---
 Modules/mmapmodule.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Modules/mmapmodule.c b/Modules/mmapmodule.c
index 62d934c607f..03685ce6c10 100644
--- a/Modules/mmapmodule.c
+++ b/Modules/mmapmodule.c
@@ -1391,6 +1391,7 @@ new_mmap_object(PyTypeObject *type, PyObject *args, PyObject *kwdict)
             if (size == 0) {
                 PyErr_SetString(PyExc_ValueError,
                                 "cannot mmap an empty file");
+                Py_DECREF(m_obj);
                 return NULL;
             }
             if (offset >= size) {