diff -r 000000000000 -r 6474c204b198 toolkit/components/workerloader/tests/moduleD-circular.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/workerloader/tests/moduleD-circular.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,11 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Module C and module D have circular dependencies.
+// This should not prevent from loading them.
+
+exports.enteredD = true;
+let C = require("chrome://mochitests/content/chrome/toolkit/components/workerloader/tests/moduleC-circular.js");
+exports.copiedFromC = JSON.parse(JSON.stringify(C));
+exports.exportedFromC = C;
+exports.finishedD = true;
\ No newline at end of file