404     teedataobject *dataobj;  member
631         link = teedataobject_jumplink(to->dataobj);  in tee_next()
634         Py_SETREF(to->dataobj, (teedataobject *)link);  in tee_next()
637     value = teedataobject_getitem(to->dataobj, to->index);  in tee_next()
647     Py_VISIT((PyObject *)to->dataobj);  in tee_traverse()
659     Py_INCREF(to->dataobj);  in tee_copy()
660     newto->dataobj = to->dataobj;  in tee_copy()
686     to->dataobj = (teedataobject *)teedataobject_newinternal(it);  in tee_fromiterable()
687     if (!to->dataobj) {  in tee_fromiterable()
716     Py_CLEAR(to->dataobj);  in tee_clear()
731     return Py_BuildValue("O(())(Oi)", Py_TYPE(to), to->dataobj, to->index);  in tee_reduce()
751     Py_XSETREF(to->dataobj, tdo);  in tee_setstate()