May 21, 2025 · May 20, 2025 · May 20, 2025
diff --git a/Lib/test/test_free_threading/test_dict.py b/Lib/test/test_free_threading/test_dict.py

 self.assertEqual(count,0)

 deftest_racing_object_get_set_dict(self):
 e=Exception()

 defwriter():
 foriinrange(10000):
 e.__dict__= {1:2}

 defreader():
 foriinrange(10000):
 e.__dict__

 t1=Thread(target=writer)
 t2=Thread(target=reader)

 withthreading_helper.start_threads([t1,t2]):
 pass

 if__name__=="__main__":
 unittest.main()
diff --git a/Objects/object.c b/Objects/object.c
 return-1;
    }
 Py_BEGIN_CRITICAL_SECTION(obj);
 Py_XSETREF(*dictptr,Py_NewRef(value));
 PyObject*olddict=*dictptr;
 FT_ATOMIC_STORE_PTR_RELEASE(*dictptr,Py_NewRef(value));
 #ifdefPy_GIL_DISABLED
 _PyObject_XDecRefDelayed(olddict);
 #else
 Py_XDECREF(olddict);
 #endif
 Py_END_CRITICAL_SECTION();
 return0;
 }
Original file line number	Diff line number	Diff line change
Expand Up		@@ -228,6 +228,22 @@ def reader_func():

		self.assertEqual(count,0)

		deftest_racing_object_get_set_dict(self):
		e=Exception()

		defwriter():
		foriinrange(10000):
		e.__dict__= {1:2}

		defreader():
		foriinrange(10000):
		e.__dict__

		t1=Thread(target=writer)
		t2=Thread(target=reader)

		withthreading_helper.start_threads([t1,t2]):
		pass

		if__name__=="__main__":
		unittest.main()
Original file line number	Diff line number	Diff line change
Expand Up		@@ -1931,7 +1931,13 @@ PyObject_GenericSetDict(PyObject obj, PyObject value, void *context)
		return-1;
		}
		Py_BEGIN_CRITICAL_SECTION(obj);
		Py_XSETREF(*dictptr,Py_NewRef(value));
		PyObjectolddict=dictptr;
		FT_ATOMIC_STORE_PTR_RELEASE(*dictptr,Py_NewRef(value));
		#ifdefPy_GIL_DISABLED
		_PyObject_XDecRefDelayed(olddict);
		#else
		Py_XDECREF(olddict);
		#endif
		Py_END_CRITICAL_SECTION();
		return0;
		}
Expand Down