gh-154871: Fix asyncio.Task.get_context() crash on uninitialized tasks (GH-154898)

(cherry picked from commit afd10f0)

Co-authored-by: Bhuvansh <bhuvanshkataria@gmail.com>

Author: BHUVANSH855

Lib/test/test_asyncio/test_tasks.py

@@ -2943,6 +2943,16 @@ 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'),

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.

Modules/_asynciomodule.c

@@ -2795,7 +2795,11 @@ 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]