From 02a9eeeb8547b3f0940a0295df8a78ce2181ec30 Mon Sep 17 00:00:00 2001
From: Ondrej Zajicek <santiago@crfreenet.org>
Date: Mon, 12 Jan 2009 14:40:21 +0100
Subject: Slist update

---
 lib/slists.c | 3 +++
 lib/slists.h | 1 +
 2 files changed, 4 insertions(+)

(limited to 'lib')

diff --git a/lib/slists.c b/lib/slists.c
index 3577430..6e0df39 100644
--- a/lib/slists.c
+++ b/lib/slists.c
@@ -61,6 +61,9 @@ s_get(siterator *i)
   f->next = g;
   if (g)
     g->prev = f;
+
+  i->prev = NULL;
+  i->next = NULL;
   return n;
 }
 
diff --git a/lib/slists.h b/lib/slists.h
index 27520c9..2334e36 100644
--- a/lib/slists.h
+++ b/lib/slists.h
@@ -84,5 +84,6 @@ void s_insert_node(snode *, snode *);
 snode *s_get(siterator *);
 void s_put(siterator *, snode *n);
 static inline void s_init(siterator *i, slist *l) { s_put(i, SHEAD(*l)); }
+static inline int s_is_used(siterator *i) { return (i->prev != NULL); }
 
 #endif
-- 
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