diff -r 000000000000 -r 6474c204b198 js/src/tests/ecma_3/Exceptions/15.11.7.6-002.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/ecma_3/Exceptions/15.11.7.6-002.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,98 @@
+/* -*- 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:    14 April 2003
+ * SUMMARY: Prototype of predefined error objects should be DontDelete
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=201989
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 201989;
+var summary = 'Prototype of predefined error objects should be DontDelete';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * Tests that |F.prototype| is DontDelete
+ */
+function testDontDelete(F)
+{
+  var e;
+  var orig = F.prototype;
+  try
+  {
+    delete F.prototype;
+  }
+  catch (e)
+  {
+  }
+  return F.prototype === orig;
+}
+
+
+var list = [
+  "Error",
+  "ConversionError",
+  "EvalError",
+  "RangeError",
+  "ReferenceError",
+  "SyntaxError",
+  "TypeError",
+  "URIError"
+  ];
+
+
+for (i in list)
+{
+  var F = this[list[i]];
+
+  // Test for |F|; e.g. Rhino defines |ConversionError| while SM does not.
+  if (F)
+  {
+    status = 'Testing DontDelete attribute of |' + list[i] + '.prototype|';
+    actual = testDontDelete(F);
+    expect = true;
+    addThis();
+  }
+}
+
+
+
+//-----------------------------------------------------------------------------
+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');
+}