diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/for-of/non-iterable.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/for-of/non-iterable.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,28 @@
+// Iterating over non-iterable values throws a TypeError.
+
+load(libdir + "asserts.js");
+
+function argsobj() { return arguments; }
+
+var misc = [
+    {}, {x: 1}, Math, isNaN,
+    Object.create(null),
+    argsobj(0, 1, 2),
+    null, undefined,
+    true, 0, 3.1416,
+    new Boolean(true), new Number(0),
+    {iterator: function () { return undefined; }},
+    {iterator: function () { return null; }},
+    {iterator: function () { return true; }},
+    {iterator: function () { return 17; }},
+];
+
+for (var i = 0; i < misc.length; i++) {
+    let v = misc[i];
+    var testfn = function () {
+        for (var _ of v)
+            throw 'FAIL';
+        throw 'BAD';
+    };
+    assertThrowsInstanceOf(testfn, TypeError);
+}