diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/closures/bug496922.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/closures/bug496922.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+actual = '';
+expected = '0,0,1,1,2,2,3,3,';
+
+v = 0
+let(
+f = function() {
+    for (let x = 0; x < 4; ++x) {
+        v >> x;
+        (function() {
+            for (let y = 0; y < 2; ++y) {
+                appendToActual(x)
+            }
+        })()
+    }
+}) { (function() {})()
+    f(v)
+}
+
+
+assertEq(actual, expected)