Regression test for #506

git-svn-id: http://www.varnish-cache.org/svn/trunk/varnish-cache@4053 d4fa192b-c00b-0410-8231-f00ffab90ce4

bin/varnishtest/tests/r00506.vtc

+# $Id$
+
+test "Illegal HTTP status from backend"
+
+server s1 {
+	rxreq
+	send "HTTP/1.1 1000\n\nFoo"
+} -start
+
+varnish v1 -vcl+backend {
+	sub vcl_recv {
+	}
+} -start
+
+client c1 {
+	txreq
+	rxresp
+} -run