diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug633409-2.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug633409-2.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// vim: set ts=8 sts=4 et sw=4 tw=99:
+
+var o1 = {p1: 1};
+var o2 = {p1: 1, p2: 2};
+
+for(var x in o1) {
+    for(var y in o2) {
+        delete o2.p2;
+    }
+}
+
+/* Don't fail cx->enumerators == obj assert, see bug comment #31 */
+