diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-127557.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-127557.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,82 @@
+/* -*- 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/. */
+
+/*
+ *
+ * Date:    06 Mar 2002
+ * SUMMARY: Testing cloned function objects
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=127557
+ *
+ * Before this bug was fixed, this testcase would error when run:
+ *
+ *             ReferenceError: h_peer is not defined
+ *
+ * The line |g.prototype = new Object| below is essential: this is
+ * what was confusing the engine in its attempt to look up h_peer
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 127557;
+var summary = 'Testing cloned function objects';
+var cnCOMMA = ',';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+if (typeof clone == 'function')
+{
+  status = inSection(1);
+  var f = evaluate("(function(x, y) {\n" +
+                   "    function h() { return h_peer(); }\n" +
+                   "    function h_peer() { return (x + cnCOMMA + y); }\n" +
+                   "    return h;\n" +
+                   "})",
+                   {compileAndGo: false});
+  var g = clone(f);
+  g.prototype = new Object;
+  var h = g(5,6);
+  actual = h();
+  expect = '5,6';
+  addThis();
+}
+else
+{
+  reportCompare('Test not run', 'Test not run', 'shell only test requires clone()');
+}
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  enterFunc('test');
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+
+  exitFunc ('test');
+}
+