diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_8_1/regress/regress-515885.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_8_1/regress/regress-515885.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,6 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/licenses/publicdomain/
+var it = (x for (x in [function(){}]));
+it.next();
+
+reportCompare("no assertion failure", "no assertion failure", "See bug 515885.");