/* PyTypeObject has already been initialized */
if (Py_REFCNT(type) != 0) {
    return 0;
}

int
_PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc,
                           unsigned long tp_flags)
{
    PyMemberDef *members;
    Py_ssize_t n_members, n_unnamed_members;

#ifdef Py_TRACE_REFS
    /* if the type object was chained, unchain it first
       before overwriting its storage */
    if (type->ob_base.ob_base._ob_next) {
        _Py_ForgetReference((PyObject *)type);
    }
#endif

    /* PyTypeObject has already been initialized */
    if (Py_REFCNT(type) != 0) {
        PyErr_BadInternalCall();
        return -1;
    }