diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-607863.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-607863.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,14 @@
+// |reftest| fails-if(!xulRuntime.shell)
+/* -*- 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 sandbox = evalcx('');
+var foreign = evalcx('({ get f() this, set x(v) { result = this } })', sandbox);
+var local = Object.create(foreign);
+
+reportCompare(local, local.f, "this should be set correctly in getters");
+local.x = 42;
+reportCompare(local, sandbox.result, "this should be set correctly in setters");