+
+ /* Const variants */
+ p = &parent;
+ c = &c2;
+ ok1(list_next(&p->children, &c1, list) == &c2);
+ ok1(list_prev(&p->children, &c1, list) == NULL);
+ ok1(list_next(&p->children, c, list) == &c3);
+ ok1(list_prev(&p->children, c, list) == &c1);
+ ok1(list_next(&parent.children, c, list) == &c3);
+ ok1(list_prev(&parent.children, c, list) == &c1);
+ ok1(list_next(&p->children, &c3, list) == NULL);
+ ok1(list_prev(&p->children, &c3, list) == &c2);
+