diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/bug678087.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/bug678087.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+
+i = 0;
+do {
+with({
+    TestCase: Float64Array
+}) for each(let TestCase in [TestCase]) {}
+ } while (i++ < 10);
+function TestCase(n, d, e, a) {}