gl_oset_add (nodes, node);
gl_oset_add (nodes, new_node);
gl_oset_add (nodes, node);
gl_oset_add (nodes, new_node);
multi_entry->h.hash_next = entry->hash_next;
multi_entry->h.hashcode = entry->hashcode;
multi_entry->magic = MULTIPLE_NODES_MAGIC;
multi_entry->h.hash_next = entry->hash_next;
multi_entry->h.hashcode = entry->hashcode;
multi_entry->magic = MULTIPLE_NODES_MAGIC;