diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-586482-5.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-586482-5.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,18 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+function check() {
+    obj2.__proto__ = null;
+    return arguments.callee.caller;
+}
+
+var obj = { f: function() { check(); }};
+
+var obj2 = { __proto__: obj };
+
+obj2.f();
+
+reportCompare(0, 0, "ok");