From: Victor Stinner <victor.stinner@gmail.com>
Date: Tue, 4 Mar 2014 22:07:08 +0000 (+0100)
Subject: asyncio, Tulip issue 158: Task._step() now also sets self to None if an
X-Git-Tag: v3.4.1rc1~233^2~145
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=d74ac82df9cda264c120379a41e7add5d64b9d01;p=thirdparty%2FPython%2Fcpython.git

asyncio, Tulip issue 158: Task._step() now also sets self to None if an
exception is raised.  self is set to None to break a reference cycle.
---

diff --git a/Lib/asyncio/tasks.py b/Lib/asyncio/tasks.py
index 19fa654edbed..0967e7e62839 100644
--- a/Lib/asyncio/tasks.py
+++ b/Lib/asyncio/tasks.py
@@ -325,7 +325,7 @@ class Task(futures.Future):
                         'Task got bad yield: {!r}'.format(result)))
         finally:
             self.__class__._current_tasks.pop(self._loop)
-        self = None
+            self = None  # Needed to break cycles when an exception occurs.
 
     def _wakeup(self, future):
         try: