From 2ed22c8b29039dce0ae795c4ba3c334b9ec860f4 Mon Sep 17 00:00:00 2001
From: antirez <antirez@gmail.com>
Date: Sat, 17 Oct 2009 22:02:59 +0200
Subject: [PATCH] MSET fixed, was not able to replace keys already set for a
 stupid bug

---
 redis.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/redis.c b/redis.c
index 3077badb..c8cb67f0 100644
--- a/redis.c
+++ b/redis.c
@@ -4128,9 +4128,16 @@ static void msetGenericCommand(redisClient *c, int nx) {
     }
 
     for (j = 1; j < c->argc; j += 2) {
-        dictAdd(c->db->dict,c->argv[j],c->argv[j+1]);
-        incrRefCount(c->argv[j]);
-        incrRefCount(c->argv[j+1]);
+        int retval;
+
+        retval = dictAdd(c->db->dict,c->argv[j],c->argv[j+1]);
+        if (retval == DICT_ERR) {
+            dictReplace(c->db->dict,c->argv[j],c->argv[j+1]);
+            incrRefCount(c->argv[j+1]);
+        } else {
+            incrRefCount(c->argv[j]);
+            incrRefCount(c->argv[j+1]);
+        }
         removeExpire(c->db,c->argv[j]);
     }
     server.dirty += (c->argc-1)/2;
-- 
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