diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/String/string-object-length.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/String/string-object-length.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+var BUGNUMBER = 650621;
+var summary = 'String object length test';
+
+print(BUGNUMBER + ": " + summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+assertEq(raisesException(InternalError)('for (args = "" ;;) args+=new String(args)+1'), true);
+
+reportCompare(true, true);
+