diff -r 000000000000 -r 6474c204b198 js/src/tests/js1_5/Regress/regress-152646.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/tests/js1_5/Regress/regress-152646.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,93 @@
+/* -*- 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:    08 July 2002
+ * SUMMARY: Testing expressions with large numbers of parentheses
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=152646
+ *
+ */
+//-----------------------------------------------------------------------------
+var UBound = 0;
+var BUGNUMBER = 152646;
+var summary = 'Testing expressions with large numbers of parentheses';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * Just seeing that we don't crash when compiling this assignment -
+ *
+ * We will form an eval string to set the result-variable |actual|.
+ * To get a feel for this, suppose N were 3. Then the eval string is
+ * 'actual = (((0)));' The expected value for this after eval() is 0.
+ */
+status = inSection(1);
+
+var sLeft = '((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((';
+sLeft += sLeft;
+sLeft += sLeft;
+sLeft += sLeft;
+sLeft += sLeft;
+sLeft += sLeft;
+
+var sRight = '))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))';
+sRight += sRight;
+sRight += sRight;
+sRight += sRight;
+sRight += sRight;
+sRight += sRight;
+
+var sEval = 'actual = ' + sLeft + '0' + sRight;
+try
+{
+  eval(sEval);
+}
+catch(e)
+{
+  /*
+   * An exception during this eval is OK, as the runtime can throw one
+   * in response to too deep recursion. We haven't crashed; good!
+   */
+  actual = 0;
+}
+expect = 0;
+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');
+}