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diff --git a/js/src/tests/non262/Exceptions/errstack-001.js b/js/src/tests/non262/Exceptions/errstack-001.js
new file mode 100644
index 0000000000..042e357fa6
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+++ b/js/src/tests/non262/Exceptions/errstack-001.js
@@ -0,0 +1,242 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 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:    28 Feb 2002
+ * SUMMARY: Testing that Error.stack distinguishes between:
+ *
+ * A) top-level calls: myFunc();
+ * B) no-name function calls: function() { myFunc();} ()
+ *
+ * The stack frame for A) should begin with '@'
+ * The stack frame for B) should begin with '()'
+ *
+ * This behavior was coded by Brendan during his fix for bug 127136.
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=127136#c13
+ *
+ * Note: our function getStackFrames(err) orders the array of stack frames
+ * so that the 0th element will correspond to the highest frame, i.e. will
+ * correspond to a line in top-level code. The 1st element will correspond
+ * to the function that is called first, and so on...
+ *
+ * NOTE: At present Rhino does not have an Error.stack property. It is an
+ * ECMA extension, see http://bugzilla.mozilla.org/show_bug.cgi?id=123177
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = '(none)';
+var summary = 'Testing Error.stack';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+var myErr = '';
+var stackFrames = '';
+
+
+function A(x,y)
+{
+  return B(x+1,y+1);
+}
+
+function B(x,z)
+{
+  return C(x+1,z+1);
+}
+
+function C(x,y)
+{
+  return D(x+1,y+1);
+}
+
+function D(x,z)
+{
+  try
+  {
+    throw new Error('meep!');
+  }
+  catch (e)
+  {
+    return e;
+  }
+}
+
+
+myErr = A(44,13);
+stackFrames = getStackFrames(myErr);
+status = inSection(1);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+status = inSection(2);
+actual = stackFrames[1].substring(0,2);
+expect = 'A@';
+addThis();
+
+status = inSection(3);
+actual = stackFrames[2].substring(0,2);
+expect = 'B@';
+addThis();
+
+status = inSection(4);
+actual = stackFrames[3].substring(0,2);
+expect = 'C@';
+addThis();
+
+status = inSection(5);
+actual = stackFrames[4].substring(0,2);
+expect = 'D@';
+addThis();
+
+
+
+myErr = A('44:foo','13:bar');
+stackFrames = getStackFrames(myErr);
+status = inSection(6);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+status = inSection(7);
+actual = stackFrames[1].substring(0,2);
+expect = 'A@';
+addThis();
+
+status = inSection(8);
+actual = stackFrames[2].substring(0,2);
+expect = 'B@';
+addThis();
+
+status = inSection(9);
+actual = stackFrames[3].substring(0,2);
+expect = 'C@';
+addThis();
+
+status = inSection(10);
+actual = stackFrames[4].substring(0,2);
+expect = 'D@';;
+addThis();
+
+
+
+/*
+ * Make the first frame occur in a function with an empty name -
+ */
+myErr = function() { return A(44,13); } ();
+stackFrames = getStackFrames(myErr);
+status = inSection(11);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+status = inSection(12);
+actual = stackFrames[1].substring(0,7);
+expect = 'myErr<@';
+addThis();
+
+status = inSection(13);
+actual = stackFrames[2].substring(0,2);
+expect = 'A@';
+addThis();
+
+// etc. for the rest of the frames as above
+
+
+
+/*
+ * Make the first frame occur in a function with name 'anonymous' -
+ */
+var f = Function('return A(44,13);');
+myErr = f();
+stackFrames = getStackFrames(myErr);
+status = inSection(14);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+status = inSection(15);
+actual = stackFrames[1].substring(0,10);
+expect = 'anonymous@';
+addThis();
+
+status = inSection(16);
+actual = stackFrames[2].substring(0,2);
+expect = 'A@';
+addThis();
+
+// etc. for the rest of the frames as above
+
+
+
+/*
+ * Make a user-defined error via the Error() function -
+ */
+var message = 'Hi there!'; var fileName = 'file name'; var lineNumber = 0;
+myErr = Error(message, fileName, lineNumber);
+stackFrames = getStackFrames(myErr);
+status = inSection(17);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+
+/*
+ * Now use the |new| keyword. Re-use the same params -
+ */
+myErr = new Error(message, fileName, lineNumber);
+stackFrames = getStackFrames(myErr);
+status = inSection(18);
+actual = stackFrames[0].substring(0,1);
+expect = '@';
+addThis();
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+/*
+ * Split the string |err.stack| along its '\n' delimiter.
+ * As of 2002-02-28 |err.stack| ends with the delimiter, so
+ * the resulting array has an empty string as its last element.
+ *
+ * Pop that useless element off before doing anything.
+ * Then reverse the array, for convenience of indexing -
+ */
+function getStackFrames(err)
+{
+  var arr = err.stack.split('\n');
+  arr.pop();
+  return arr.reverse();
+}
+
+
+function addThis()
+{
+  statusitems[UBound] = status;
+  actualvalues[UBound] = actual;
+  expectedvalues[UBound] = expect;
+  UBound++;
+}
+
+
+function test()
+{
+  printBugNumber(BUGNUMBER);
+  printStatus(summary);
+
+  for (var i=0; i<UBound; i++)
+  {
+    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
+  }
+}