diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/for-of/arrays-growing-1.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/for-of/arrays-growing-1.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,10 @@
+// A for-of loop over an array continues to the end if the array grows during iteration.
+
+var a = [0, 1, 1, 0, 1, 0, 0];
+var s = '';
+for (var v of a) {
+    s += v;
+    if (v === 1)
+        a.push(2);
+}
+assertEq(s, '0110100222');