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diff --git a/js/src/tests/js1_7/geniter/throw-forever.js b/js/src/tests/js1_7/geniter/throw-forever.js
new file mode 100644
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@@ -0,0 +1,117 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is JavaScript Engine testing utilities.
+ *
+ * The Initial Developer of the Original Code is
+ * Jeff Walden.
+ * Portions created by the Initial Developer are Copyright (C) 2006
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+//-----------------------------------------------------------------------------
+var BUGNUMBER     = "(none)";
+var summary = "gen.throw(ex) returns ex for an exhausted gen";
+var actual, expect;
+
+printBugNumber(BUGNUMBER);
+printStatus(summary);
+
+/**************
+ * BEGIN TEST *
+ **************/
+
+function gen()
+{
+  var x = 5, y = 7;
+  var z = x + y;
+  yield z;
+}
+
+var failed = false;
+var it = gen();
+
+try
+{
+  // throw works even on newly-initialized generators
+  var thrown = "foobar";
+  var doThrow = true;
+  try
+  {
+    it.throw(thrown);
+  }
+  catch (e)
+  {
+    if (e === thrown)
+      doThrow = false;
+  }
+  if (doThrow)
+    throw "it.throw(\"" + thrown + "\") failed";
+
+  // you can throw stuff at a generator which hasn't
+  // been used yet forever
+  thrown = "baz";
+  doThrow = true;
+  try
+  {
+    it.throw(thrown);
+  }
+  catch (e)
+  {
+    if (e === thrown)
+      doThrow = false;
+  }
+  if (doThrow)
+    throw "it.throw(\"" + thrown + "\") failed";
+
+  // don't execute a yield -- the uncaught exception
+  // exhausted the generator
+  var stopPassed = false;
+  try
+  {
+    it.next();
+  }
+  catch (e)
+  {
+    if (e === StopIteration)
+      stopPassed = true;
+  }
+
+  if (!stopPassed)
+    throw "missing or incorrect StopIteration";
+}
+catch (e)
+{
+  failed = e;
+}
+
+expect = false;
+actual = failed;
+
+reportCompare(expect, actual, summary);