diff -r 000000000000 -r 6474c204b198 js/xpconnect/tests/unit/test_bug604362.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/xpconnect/tests/unit/test_bug604362.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,12 @@
+function run_test() {
+  var Cc = Components.classes;
+  var Ci = Components.interfaces;
+  var sp = Cc["@mozilla.org/systemprincipal;1"].
+           createInstance(Ci.nsIPrincipal);
+  var s = Components.utils.Sandbox(sp);
+  s.a = [];
+  s.Cu = Components.utils;
+  s.C = Components;
+  s.do_check_neq = do_check_neq;
+  Components.utils.evalInSandbox("do_check_neq(Cu.import, undefined);", s);
+}