diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/ion/bug870328.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/ion/bug870328.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,7 @@
+var g = newGlobal("same-compartment");
+try {
+    evalcx("'use strict'; (function() { x = 33; })()", g);
+    assertEq(0, 1);
+} catch(e) {
+    assertEq(e.toString().contains("variable x"), true);
+}