From e75996a77ca1974ffa36f9b7be6cd9d3023c49e7 Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Thu, 31 Oct 2013 16:34:08 +0100
Subject: Issue #19437: Fix PyCFuncPtrType constructor, handle
 _ctypes_alloc_format_string() failure

---
 Modules/_ctypes/_ctypes.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Modules/_ctypes/_ctypes.c b/Modules/_ctypes/_ctypes.c
index 32d67b0..0deffa0 100644
--- a/Modules/_ctypes/_ctypes.c
+++ b/Modules/_ctypes/_ctypes.c
@@ -2245,6 +2245,10 @@ PyCFuncPtrType_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
        argtypes would be a ctypes type).
     */
     stgdict->format = _ctypes_alloc_format_string(NULL, "X{}");
+    if (stgdict->format == NULL) {
+        Py_DECREF((PyObject *)stgdict);
+        return NULL;
+    }
     stgdict->flags |= TYPEFLAG_ISPOINTER;
 
     /* create the new instance (which is a class,
-- 
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