1 files changed, 6 insertions, 0 deletions
diff --git a/Lib/test/test_descr.py b/Lib/test/test_descr.py
index 0ff4d02..71b6954 100644
--- a/Lib/test/test_descr.py
+++ b/Lib/test/test_descr.py
@@ -1303,6 +1303,12 @@ order (MRO) for bases """
         with self.assertRaises(AttributeError):
             del X().a
 
+        # Inherit from object on purpose to check some backwards compatibility paths
+        class X(object):
+            __slots__ = "a"
+        with self.assertRaisesRegex(AttributeError, "'X' object has no attribute 'a'"):
+            X().a
+
     def test_slots_special(self):
         # Testing __dict__ and __weakref__ in __slots__...
         class D(object):