diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/closures/bug496987.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/closures/bug496987.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,17 @@
+actual = '';
+expected = '0,undefined,0,undefined,1,undefined,0,undefined,1,undefined,0,undefined,1,undefined,nocrash,';
+
+// bug 496987
+
+for each(let a in ["", "", true, "", true, "", true]) {
+    appendToActual((function() {
+        for (var e in [0]) {
+            appendToActual( + a)
+        }
+    })())
+}
+
+appendToActual('nocrash')
+
+
+assertEq(actual, expected)