From 692796a948ab67d75f7010e96b31885eefbd88e5 Mon Sep 17 00:00:00 2001
From: Yury Selivanov <yury@magic.io>
Date: Tue, 8 Nov 2016 19:04:57 -0500
Subject: [PATCH] Issue #26081: Fix refleak in
 _asyncio.Future.__iter__().throw.

---
 Misc/NEWS                | 2 ++
 Modules/_asynciomodule.c | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/Misc/NEWS b/Misc/NEWS
index fee8579a94f..ffbdb8918f3 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -38,6 +38,8 @@ Library
 
 - Issue #28634: Fix asyncio.isfuture() to support unittest.Mock.
 
+- Issue #26081: Fix refleak in _asyncio.Future.__iter__().throw.
+
 Documentation
 -------------
 
diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c
index 7df6fa5008b..df81b105ec5 100644
--- a/Modules/_asynciomodule.c
+++ b/Modules/_asynciomodule.c
@@ -1044,14 +1044,16 @@ FutureIter_throw(futureiterobject *self, PyObject *args)
     else {
         if (PyExceptionClass_Check(type)) {
             val = PyObject_CallObject(type, NULL);
+            PyErr_SetObject(type, val);
+            Py_DECREF(val);
         }
         else {
             val = type;
             assert (PyExceptionInstance_Check(val));
             type = (PyObject*)Py_TYPE(val);
             assert (PyExceptionClass_Check(type));
+            PyErr_SetObject(type, val);
         }
-        PyErr_SetObject(type, val);
     }
     return FutureIter_iternext(self);
 }