522 #define _odict_FIRST(od) (((PyODictObject *)od)->od_first)  macro
524 #define _odict_EMPTY(od) (_odict_FIRST(od) == NULL)
526     for (node = _odict_FIRST(od); node != NULL; node = _odictnode_NEXT(node))
639     _odictnode_NEXT(node) = _odict_FIRST(od);  in _odict_add_head()
640     if (_odict_FIRST(od) == NULL)  in _odict_add_head()
643         _odictnode_PREV(_odict_FIRST(od)) = node;  in _odict_add_head()
644     _odict_FIRST(od) = node;  in _odict_add_head()
654         _odict_FIRST(od) = node;  in _odict_add_tail()
709     if (_odict_FIRST(od) == node)  in _odict_remove_node()
710         _odict_FIRST(od) = _odictnode_NEXT(node);  in _odict_remove_node()
782     node = _odict_FIRST(od);  in _odict_clear_nodes()
783     _odict_FIRST(od) = NULL;  in _odict_clear_nodes()
800     node_a = _odict_FIRST(a);  in _odict_keys_equal()
801     node_b = _odict_FIRST(b);  in _odict_keys_equal()
1122     node = last ? _odict_LAST(self) : _odict_FIRST(self);  in OrderedDict_popitem_impl()
1275     node = last ? _odict_LAST(self) : _odict_FIRST(self);  in OrderedDict_move_to_end_impl()
1292             if (node != _odict_FIRST(self)) {  in OrderedDict_move_to_end_impl()
1883     node = reversed ? _odict_LAST(od) : _odict_FIRST(od);  in odictiter_new()