diff -r 000000000000 -r 6474c204b198 js/xpconnect/tests/unit/test_nuke_sandbox.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/xpconnect/tests/unit/test_nuke_sandbox.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,29 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/* See https://bugzilla.mozilla.org/show_bug.cgi?id=769273 */
+
+function run_test()
+{
+  var sb = Components.utils.Sandbox("http://www.blah.com");
+  sb.prop = "prop"
+  var refToObjFromSb = Components.utils.evalInSandbox("var a = {prop2:'prop2'}; a", sb); 
+  Components.utils.nukeSandbox(sb);
+  do_check_true(Components.utils.isDeadWrapper(sb), "sb should be dead");
+  try{
+    sb.prop;
+    do_check_true(false);
+  } catch (e) {
+    do_check_true(e.toString().indexOf("can't access dead object") > -1);
+  }
+  
+  Components.utils.isDeadWrapper(refToObjFromSb, "ref to object from sb should be dead");
+  try{
+    refToObjFromSb.prop2;
+    do_check_true(false);
+  } catch (e) {
+    do_check_true(e.toString().indexOf("can't access dead object") > -1);
+  }
+  
+}