diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/for-of/array-iterator-gc.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/for-of/array-iterator-gc.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,13 @@
+// Array iterators keep the underlying array, arraylike object, or string alive.
+
+load(libdir + "referencesVia.js");
+load(libdir + "iteration.js");
+
+function test(obj) {
+    var it = Array.prototype[std_iterator].call(obj);
+    assertEq(referencesVia(it, "**UNKNOWN SLOT 0**", obj), true);
+}
+
+test([]);
+test([1, 2, 3, 4]);
+test({});