diff options
Diffstat (limited to 'Objects/typevarobject.c')
| -rw-r--r-- | Objects/typevarobject.c | 38 |
1 files changed, 20 insertions, 18 deletions
diff --git a/Objects/typevarobject.c b/Objects/typevarobject.c index 069e1d9..db9c219 100644 --- a/Objects/typevarobject.c +++ b/Objects/typevarobject.c @@ -364,24 +364,26 @@ typevar_new_impl(PyTypeObject *type, PyObject *name, PyObject *constraints, } } - if (!PyTuple_CheckExact(constraints)) { - PyErr_SetString(PyExc_TypeError, - "constraints must be a tuple"); - return NULL; - } - Py_ssize_t n_constraints = PyTuple_GET_SIZE(constraints); - if (n_constraints == 1) { - PyErr_SetString(PyExc_TypeError, - "A single constraint is not allowed"); - Py_XDECREF(bound); - return NULL; - } else if (n_constraints == 0) { - constraints = NULL; - } else if (bound != NULL) { - PyErr_SetString(PyExc_TypeError, - "Constraints cannot be combined with bound=..."); - Py_XDECREF(bound); - return NULL; + if (constraints != NULL) { + if (!PyTuple_CheckExact(constraints)) { + PyErr_SetString(PyExc_TypeError, + "constraints must be a tuple"); + return NULL; + } + Py_ssize_t n_constraints = PyTuple_GET_SIZE(constraints); + if (n_constraints == 1) { + PyErr_SetString(PyExc_TypeError, + "A single constraint is not allowed"); + Py_XDECREF(bound); + return NULL; + } else if (n_constraints == 0) { + constraints = NULL; + } else if (bound != NULL) { + PyErr_SetString(PyExc_TypeError, + "Constraints cannot be combined with bound=..."); + Py_XDECREF(bound); + return NULL; + } } PyObject *module = caller(); if (module == NULL) { |