diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_5/strict/unbrand-this.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_5/strict/unbrand-this.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,45 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+
+/*
+ * Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/licenses/publicdomain/
+ */
+
+/* Test JSOP_UNBRANDTHIS's behavior on object and non-object |this| values. */
+
+function strict() {
+  "use strict";
+  this.insert = function(){ bar(); };
+  function bar() {}
+}
+
+var exception;
+
+// Try 'undefined' as a |this| value.
+exception = null;
+try {
+  strict.call(undefined);
+} catch (x) {
+  exception = x;
+}
+assertEq(exception instanceof TypeError, true);
+
+// Try 'null' as a |this| value.
+exception = null;
+try {
+  strict.call(null);
+} catch (x) {
+  exception = x;
+}
+assertEq(exception instanceof TypeError, true);
+
+// An object as a |this| value should be fine.
+exception = null;
+try {
+  strict.call({});
+} catch (x) {
+  exception = x;
+}
+assertEq(exception, null);
+
+reportCompare(true, true);