diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug641224.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug641224.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,5 @@
+try {
+x = evalcx('lazy');
+x.__iterator__ = Object.isFrozen
+for each(x in x) {}
+} catch (e) {}