From c53b4280795088a50e26c216ea023d13822b33f5 Mon Sep 17 00:00:00 2001
From: Victor Julien <victor@inliniac.net>
Date: Fri, 25 Jul 2014 17:41:34 +0200
Subject: [PATCH] Fix engine getting stuck because of optimizations

At -O1+ in both Gcc and Clang, PacketPoolWait would optimize the
wait loop in the wrong way. Adding a compiler barrier to prevent
this optimization issue.
---
 src/tmqh-packetpool.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tmqh-packetpool.c b/src/tmqh-packetpool.c
index 1f7f5bd248..1f0a3ec7b9 100644
--- a/src/tmqh-packetpool.c
+++ b/src/tmqh-packetpool.c
@@ -151,7 +151,7 @@ void PacketPoolWait(void)
     PktPool *my_pool = GetThreadPacketPool();
 
     while(PacketPoolIsEmpty(my_pool))
-        ;
+        cc_barrier();
 }
 
 /** \brief a initialized packet