gh-129289: fix crash when task finalizer is not called in asyncio (#129840)

1 files changed, 16 insertions, 0 deletions

diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 5a28d4c185b..de2e658bca6 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -2296,6 +2296,22 @@ class BaseTaskTests:
 
         self.assertEqual(self.all_tasks(loop=self.loop), set())
 
+    def test_task_not_crash_without_finalization(self):
+        Task = self.__class__.Task
+
+        class Subclass(Task):
+            def __del__(self):
+                pass
+
+        async def coro():
+            await asyncio.sleep(0.01)
+
+        task = Subclass(coro(), loop = self.loop)
+        task._log_destroy_pending = False
+
+        del task
+
+        support.gc_collect()
 
     @mock.patch('asyncio.base_events.logger')
     def test_tb_logger_not_called_after_cancel(self, m_log):