--- bin/varnishd/cache_ban.c.orig	2012-09-18 11:44:55.867165803 +0200
+++ bin/varnishd/cache_ban.c	2012-09-18 11:45:37.879300620 +0200
@@ -81,7 +81,7 @@
 	const void		*arg2_spec;
 };
 
-static VTAILQ_HEAD(banhead_s,ban) ban_head = VTAILQ_HEAD_INITIALIZER(ban_head);
+static volatile VTAILQ_HEAD(banhead_s,ban) ban_head = VTAILQ_HEAD_INITIALIZER(ban_head);
 static struct lock ban_mtx;
 static struct ban *ban_magic;
 static pthread_t ban_thread;