From dda20542abcccac04a7f630695e6a30304f7dcf8 Mon Sep 17 00:00:00 2001
From: Pieter Noordhuis <pcnoordhuis@gmail.com>
Date: Fri, 4 Jun 2010 11:32:33 +0200
Subject: [PATCH] safety assert in listTypeNext

---
 redis.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/redis.c b/redis.c
index 30f05a63..1882d742 100644
--- a/redis.c
+++ b/redis.c
@@ -5029,6 +5029,9 @@ static void listTypeReleaseIterator(listTypeIterator *li) {
  * and advances the position of the iterator. Returns 1 when the current
  * entry is in fact an entry, 0 otherwise. */
 static int listTypeNext(listTypeIterator *li, listTypeEntry *entry) {
+    /* Protect from converting when iterating */
+    redisAssert(li->subject->encoding == li->encoding);
+
     entry->li = li;
     if (li->encoding == REDIS_ENCODING_ZIPLIST) {
         entry->zi = li->zi;