From fbb1c5ee068d209e33f6e15ecb4821d5d8b107fa Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Wed, 30 Mar 2016 20:40:02 +0300
Subject: Issue #26494: Fixed crash on iterating exhausting iterators.

Affected classes are generic sequence iterators, iterators of str, bytes,
bytearray, list, tuple, set, frozenset, dict, OrderedDict, corresponding
views and os.scandir() iterator.
---
 Objects/setobject.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Objects/setobject.c')

diff --git a/Objects/setobject.c b/Objects/setobject.c
index 582f280e34..4ef692db33 100644
--- a/Objects/setobject.c
+++ b/Objects/setobject.c
@@ -839,8 +839,8 @@ static PyObject *setiter_iternext(setiterobject *si)
     return key;
 
 fail:
-    Py_DECREF(so);
     si->si_set = NULL;
+    Py_DECREF(so);
     return NULL;
 }
 
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