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gh-110864: TypeVar constructor: Partially revert gh-110784, constraints cannot be NULL (#110922)

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Nikita Sobolev 2023-10-16 18:01:04 +03:00 • committed by GitHub
parent 02d26c4bef
commit 6a4528d70c
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1 changed files with 14 additions and 20 deletions
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34
Objects/typevarobject.c
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@ -363,26 +363,20 @@ typevar_new_impl(PyTypeObject *type, PyObject *name, PyObject *constraints,
} }
} }
if (constraints != NULL) { assert(PyTuple_CheckExact(constraints));
if (!PyTuple_CheckExact(constraints)) { Py_ssize_t n_constraints = PyTuple_GET_SIZE(constraints);
PyErr_SetString(PyExc_TypeError, if (n_constraints == 1) {
"constraints must be a tuple"); PyErr_SetString(PyExc_TypeError,
return NULL; "A single constraint is not allowed");
} Py_XDECREF(bound);
Py_ssize_t n_constraints = PyTuple_GET_SIZE(constraints); return NULL;
if (n_constraints == 1) { } else if (n_constraints == 0) {
PyErr_SetString(PyExc_TypeError, constraints = NULL;
"A single constraint is not allowed"); } else if (bound != NULL) {
Py_XDECREF(bound); PyErr_SetString(PyExc_TypeError,
return NULL; "Constraints cannot be combined with bound=...");
} else if (n_constraints == 0) { Py_XDECREF(bound);
constraints = NULL; return NULL;
} else if (bound != NULL) {
PyErr_SetString(PyExc_TypeError,
"Constraints cannot be combined with bound=...");
Py_XDECREF(bound);
return NULL;
}
} }
PyObject *module = caller(); PyObject *module = caller();
if (module == NULL) { if (module == NULL) {