followup

Author: JelleZijlstra

Lib/test/test_typing.py

@@ -1318,6 +1318,9 @@ def test_bound(self):
         self.assertIs(Ts_bound.__bound__, int)
         Ts_tuple_bound = TypeVarTuple('Ts_tuple_bound', bound=(int, str))
         self.assertEqual(Ts_tuple_bound.__bound__, (int, str))
+        obj = object()
+        Ts_object = TypeVarTuple('Ts_object', bound=obj)
+        self.assertIs(Ts_object.__bound__, obj)
         Ts_no_bound = TypeVarTuple('Ts_no_bound')
         self.assertIsNone(Ts_no_bound.__bound__)
 
@@ -10541,8 +10544,11 @@ def test_paramspec_bound(self):
         self.assertEqual(P.__bound__, [int, str])
         P2 = ParamSpec('P2', bound=(int, str))
         self.assertEqual(P2.__bound__, (int, str))
-        P3 = ParamSpec('P3')
-        self.assertIs(P3.__bound__, None)
+        obj = object()
+        P3 = ParamSpec('P3', bound=obj)
+        self.assertIs(P3.__bound__, obj)
+        P4 = ParamSpec('P4')
+        self.assertIs(P4.__bound__, None)
 
     def test_paramspec_gets_copied(self):
         # bpo-46581

Objects/typevarobject.c

@@ -1342,7 +1342,6 @@ paramspec_new_impl(PyTypeObject *type, PyObject *name, PyObject *bound,
     }
     PyObject *module = caller();
     if (module == NULL) {
-        Py_XDECREF(bound);
         return NULL;
     }
     PyObject *ps = (PyObject *)paramspec_alloc(
@@ -1627,12 +1626,8 @@ typevartuple_impl(PyTypeObject *type, PyObject *name, PyObject *bound,
         PyErr_SetString(PyExc_ValueError, "Variance cannot be specified with infer_variance.");
         return NULL;
     }
-    if (Py_IsNone(bound)) {
-        bound = NULL;
-    }
     PyObject *module = caller();
     if (module == NULL) {
-        Py_XDECREF(bound);
         return NULL;
     }
     PyObject *result = (PyObject *)typevartuple_alloc(