diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/closures/bug497015-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/closures/bug497015-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,19 @@
+actual = '';
+expected = ',0,0,8888,0,0,8888,0,0,/x/,0,0,';
+
+for each(let a in ['', 8888, 8888, /x/]) {
+    '';
+    for each(e in ['', false, '']) {
+        (function(e) {
+            for each(let c in ['']) {
+                appendToActual(a);
+            }
+        })();
+        for (let aa = 0; aa < 1; ++aa) {
+            a = aa;
+        }
+    }
+}
+
+
+assertEq(actual, expected)