diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-341360.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-341360.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,55 @@
+// |reftest| skip-if(xulRuntime.OS=="WINNT"&&isDebugBuild) slow
+/* -*- 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 = 341360;
+var summary = 'clearInterval broken';
+var actual = '';
+var expect = 'Ok';
+
+printBugNumber(BUGNUMBER);
+printStatus (summary);
+
+function xxx()
+{
+  if(t != null)
+  {
+    print('Clearing interval...');
+    window.clearInterval(t);
+    t = null;
+    setTimeout('yyy()', 2000);
+   
+  }
+  else {
+    print('Clearing interval failed...');
+    actual = "Broken";
+    gDelayTestDriverEnd = false;
+    reportCompare(expect, actual, summary);
+    jsTestDriverEnd();
+  }
+}
+
+function yyy()
+{
+  print('Checking result...');
+  actual = 'Ok';
+  gDelayTestDriverEnd = false;
+  reportCompare(expect, actual, summary);
+  jsTestDriverEnd();
+}
+
+if (typeof window == 'undefined')
+{
+  expect = actual = 'Not tested';
+  reportCompare(expect, actual, summary);
+}
+else
+{
+  print('Start...');
+  gDelayTestDriverEnd = true;
+  var t = window.setInterval(xxx, 1000);
+}
+