diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_5/regress/regress-560998-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_5/regress/regress-560998-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+// Contributor: Jason Orendorff <jorendorff@mozilla.com>
+
+var x = {};
+for (var i = 0; i < 2; i++) {
+    Object.defineProperty(x, "y", {configurable: true, value: function () {}});
+    x.y();
+}
+reportCompare(0, 0, "ok");