diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py index 110cd0936c007c9..ad9b09857f8fd2b 100644 --- a/Lib/test/test_asyncio/test_tasks.py +++ b/Lib/test/test_asyncio/test_tasks.py @@ -2924,6 +2924,16 @@ async def coro(): with self.assertRaises(AttributeError): del task._log_destroy_pending + def test_get_context_uninitialized_segfault(self): + # https://github.com/python/cpython/issues/154871 + + class UninitializedTask(self.Task): + def __init__(self, *args, **kwargs): + pass + + task = UninitializedTask() + self.assertIsNone(task.get_context()) + @unittest.skipUnless(hasattr(futures, '_CFuture') and hasattr(tasks, '_CTask'), diff --git a/Misc/NEWS.d/next/Library/2026-07-29-19-48-59.gh-issue-154871.tgZILS.rst b/Misc/NEWS.d/next/Library/2026-07-29-19-48-59.gh-issue-154871.tgZILS.rst new file mode 100644 index 000000000000000..8f0f1096dfe6347 --- /dev/null +++ b/Misc/NEWS.d/next/Library/2026-07-29-19-48-59.gh-issue-154871.tgZILS.rst @@ -0,0 +1,2 @@ +Fixed a crash in :meth:`asyncio.Task.get_context` +when called on an uninitialized task. diff --git a/Modules/_asynciomodule.c b/Modules/_asynciomodule.c index 0cd41d0b4c4d0dc..debdb66a2315bdf 100644 --- a/Modules/_asynciomodule.c +++ b/Modules/_asynciomodule.c @@ -2787,7 +2787,11 @@ static PyObject * _asyncio_Task_get_context_impl(TaskObj *self) /*[clinic end generated code: output=6996f53d3dc01aef input=87c0b209b8fceeeb]*/ { - return Py_NewRef(self->task_context); + if (self->task_context) { + return Py_NewRef(self->task_context); + } + + Py_RETURN_NONE; } /*[clinic input]