-#define SET_FOREACH_BACKWARDS(e, s, i) \
- for ((i) = ITERATOR_LAST, (e) = set_iterate_backwards((s), &(i)); (e); (e) = set_iterate_backwards((s), &(i)))
+DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free);
+DEFINE_TRIVIAL_CLEANUP_FUNC(Set*, set_free_free);
+#define _cleanup_set_free_ _cleanup_(set_freep)
+#define _cleanup_set_free_free_ _cleanup_(set_free_freep)