diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/extensions/regress-361964.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/extensions/regress-361964.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,54 @@
+// |reftest| skip -- slow, alert not dismissed, now busted by harness
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER = 361964;
+var summary = 'Crash [@ MarkGCThingChildren] involving watch and setter';
+var actual = 'No Crash';
+var expect = 'No Crash';
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+function test()
+{
+  enterFunc ('test');
+  printBugNumber(BUGNUMBER);
+  printStatus (summary);
+
+  var doc;
+  if (typeof document == 'undefined')
+  {
+    doc = {};
+  }
+  else
+  {
+    doc = document;
+  }
+
+  if (typeof alert == 'undefined')
+  {
+    alert = print;
+  }
+
+// Crash:
+  doc.watch("title", function(a,b,c,d) {
+		   return { toString : function() { alert(1); } };
+		 });
+  doc.title = "xxx";
+
+// No crash:
+  doc.watch("title", function() {
+		   return { toString : function() { alert(1); } };
+		 });
+  doc.title = "xxx";
+
+  reportCompare(expect, actual, summary);
+
+  exitFunc ('test');
+}