From 81f241ab2e19db9e421a300c00f9fb1c4e0003df Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Wed, 25 Mar 2015 02:25:25 +0100
Subject: [PATCH] Issue #23571: If io.TextIOWrapper constructor fails in
 _Py_DisplaySourceLine(), close the binary file to fix a resource warning.

---
 Python/traceback.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/Python/traceback.c b/Python/traceback.c
index c2aba522bf6..2bea29e44a2 100644
--- a/Python/traceback.c
+++ b/Python/traceback.c
@@ -309,13 +309,20 @@ _Py_DisplaySourceLine(PyObject *f, PyObject *filename, int lineno, int indent)
     }
     fob = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "Os", binary, encoding);
     Py_DECREF(io);
-    Py_DECREF(binary);
     PyMem_FREE(found_encoding);
 
     if (fob == NULL) {
         PyErr_Clear();
+
+        res = _PyObject_CallMethodId(binary, &PyId_close, "");
+        Py_DECREF(binary);
+        if (res)
+            Py_DECREF(res);
+        else
+            PyErr_Clear();
         return 0;
     }
+    Py_DECREF(binary);
 
     /* get the line number lineno */
     for (i = 0; i < lineno; i++) {