diff -r 000000000000 -r 6474c204b198 toolkit/components/commandlines/test/unit/test_bug666224.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/commandlines/test/unit/test_bug666224.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+function run_test() {
+    var cmdLine=Components.classes["@mozilla.org/toolkit/command-line;1"].createInstance(Components.interfaces.nsICommandLine);
+    try {
+        cmdLine.getArgument(cmdLine.length);
+    } catch(e) {} 
+}