diff options
Diffstat (limited to 'Lib/asyncio')
| -rw-r--r-- | Lib/asyncio/base_events.py | 7 | ||||
| -rw-r--r-- | Lib/asyncio/taskgroups.py | 7 |
2 files changed, 12 insertions, 2 deletions
diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py index 9e6f6e3ee7e..6e6e5aaac15 100644 --- a/Lib/asyncio/base_events.py +++ b/Lib/asyncio/base_events.py @@ -477,7 +477,12 @@ class BaseEventLoop(events.AbstractEventLoop): task.set_name(name) - return task + try: + return task + finally: + # gh-128552: prevent a refcycle of + # task.exception().__traceback__->BaseEventLoop.create_task->task + del task def set_task_factory(self, factory): """Set a task factory that will be used by loop.create_task(). diff --git a/Lib/asyncio/taskgroups.py b/Lib/asyncio/taskgroups.py index 9fa772ca9d0..8af199d6dcc 100644 --- a/Lib/asyncio/taskgroups.py +++ b/Lib/asyncio/taskgroups.py @@ -205,7 +205,12 @@ class TaskGroup: else: self._tasks.add(task) task.add_done_callback(self._on_task_done) - return task + try: + return task + finally: + # gh-128552: prevent a refcycle of + # task.exception().__traceback__->TaskGroup.create_task->task + del task # Since Python 3.8 Tasks propagate all exceptions correctly, # except for KeyboardInterrupt and SystemExit which are |