From 42e9d94bc5d7134461a03afe9526e0926ed223dc Mon Sep 17 00:00:00 2001
From: Victor Stinner <victor.stinner@gmail.com>
Date: Fri, 19 Aug 2016 17:58:54 +0200
Subject: [PATCH] Fix a refleak in call_maybe()

Issue #27128. Fix a reference leak if creating the tuple to pass positional
parameters fails.
---
 Objects/typeobject.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Objects/typeobject.c b/Objects/typeobject.c
index 00995d481d..950835c6b7 100644
--- a/Objects/typeobject.c
+++ b/Objects/typeobject.c
@@ -1314,8 +1314,10 @@ call_maybe(PyObject *o, char *name, PyObject **nameobj, char *format, ...)
 
     va_end(va);
 
-    if (args == NULL)
+    if (args == NULL) {
+        Py_DECREF(func);
         return NULL;
+    }
 
     assert(PyTuple_Check(args));
     retval = PyObject_Call(func, args, NULL);
-- 
2.50.1