diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/closures/incr-exit-3.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/closures/incr-exit-3.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+actual = '';
+expected = 'foo4,foo4,';
+
+v = 0
+let(f = function (y) {
+    let(f = function (y) {
+        let(f = function (g) {
+            for (h in g) {
+                if (++y > 3) {
+                    appendToActual('foo' + y)
+                }
+            }
+        }) {
+            f([y
+            for (b in [1, []])]);
+            f(['', false])
+        }
+        v = String
+    }) {
+        f(y)
+        f(y)
+    }
+}) {
+    f(v)
+}
+
+
+assertEq(actual, expected)