From 343aad7d340dfd84b4b384b16f795755c123993b Mon Sep 17 00:00:00 2001
From: Matthew Sackman <matthew@rabbitmq.com>
Date: Mon, 13 Dec 2010 17:41:43 +0000
Subject: Do not, ever, use lists:concat. It does not do what you think

---
 src/rabbit_variable_queue.erl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/rabbit_variable_queue.erl b/src/rabbit_variable_queue.erl
index bf7d2a5d..f1658028 100644
--- a/src/rabbit_variable_queue.erl
+++ b/src/rabbit_variable_queue.erl
@@ -1363,7 +1363,7 @@ ack(MsgStoreFun, Fun, AckTags, State) ->
                                        gb_trees:delete_any(SeqId, RAI)})}
           end, {{[], orddict:new()}, State}, AckTags),
     IndexState1 = rabbit_queue_index:ack(SeqIds, IndexState),
-    AckdGuids = lists:concat(
+    AckdGuids = lists:append(
                   orddict:fold(
                     fun (IsPersistent, Guids, Gs) ->
                             MsgStoreFun(MSCState, IsPersistent, Guids),
-- 
cgit v1.2.1