diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/extensions/watch-undefined-setter.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/extensions/watch-undefined-setter.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/
+ * Contributor:
+ *   Gary Kwong
+ */
+
+var gTestfile = 'watch-undefined-setter.js';
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 560277;
+var summary =
+  'Crash [@ JSObject::getParent] or [@ js_WrapWatchedSetter] or ' +
+  '[@ js_GetClassPrototype]';
+
+this.watch("x", function() { });
+Object.defineProperty(this, "x", { set: undefined });
+
+reportCompare(true, true);