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diff --git a/tests/auto/qml/parserstress/tests/ecma_3/RegExp/regress-223273.js b/tests/auto/qml/parserstress/tests/ecma_3/RegExp/regress-223273.js
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+++ b/tests/auto/qml/parserstress/tests/ecma_3/RegExp/regress-223273.js
@@ -0,0 +1,279 @@
+/* -*- 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
+ * Netscape Communications Corp.
+ * Portions created by the Initial Developer are Copyright (C) 2003
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   pschwartau@netscape.com
+ *
+ * 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 ***** */
+
+/*
+ *
+ * Date:    23 October 2003
+ * SUMMARY: Unescaped, unbalanced parens in a regexp should cause SyntaxError.
+ *
+ * The same would also be true for unescaped, unbalanced brackets or braces
+ * if we followed the ECMA-262 Ed. 3 spec on this. But it was decided for
+ * backward compatibility reasons to follow Perl 5, which permits
+ *
+ * 1. an unescaped, unbalanced right bracket ]
+ * 2. an unescaped, unbalanced left brace    {
+ * 3. an unescaped, unbalanced right brace   }
+ *
+ * If any of these should occur, Perl treats each as a literal
+ * character.  Therefore we permit all three of these cases, even
+ * though not ECMA-compliant.  Note Perl errors on an unescaped,
+ * unbalanced left bracket; so will we.
+ *
+ * See http://bugzilla.mozilla.org/show_bug.cgi?id=223273
+ *
+ */
+//-----------------------------------------------------------------------------
+var gTestfile = 'regress-223273.js';
+var UBound = 0;
+var BUGNUMBER = 223273;
+var summary = 'Unescaped, unbalanced parens in regexp should be a SyntaxError';
+var TEST_PASSED = 'SyntaxError';
+var TEST_FAILED = 'Generated an error, but NOT a SyntaxError!';
+var TEST_FAILED_BADLY = 'Did not generate ANY error!!!';
+var CHECK_PASSED = 'Should not generate an error';
+var CHECK_FAILED = 'Generated an error!';
+var status = '';
+var statusitems = [];
+var actual = '';
+var actualvalues = [];
+var expect= '';
+var expectedvalues = [];
+
+
+/*
+ * All the following contain unescaped, unbalanced parens and
+ * should generate SyntaxErrors. That's what we're testing for.
+ *
+ * To allow the test to compile and run, we have to hide the errors
+ * inside eval strings, and check they are caught at run-time.
+ *
+ * Inside such strings, remember to escape any escape character!
+ */
+status = inSection(1);
+testThis(' /(/ ');
+
+status = inSection(2);
+testThis(' /)/ ');
+
+status = inSection(3);
+testThis(' /(abc\\)def(g/ ');
+
+status = inSection(4);
+testThis(' /\\(abc)def)g/ ');
+
+
+/*
+ * These regexp patterns are correct and should not generate
+ * any errors. Note we use checkThis() instead of testThis().
+ */
+status = inSection(5);
+checkThis(' /\\(/ ');
+
+status = inSection(6);
+checkThis(' /\\)/ ');
+
+status = inSection(7);
+checkThis(' /(abc)def\\(g/ ');
+
+status = inSection(8);
+checkThis(' /(abc\\)def)g/ ');
+
+status = inSection(9);
+checkThis(' /(abc(\\))def)g/ ');
+
+status = inSection(10);
+checkThis(' /(abc([x\\)yz]+)def)g/ ');
+
+
+
+/*
+ * Unescaped, unbalanced left brackets should be a SyntaxError
+ */
+status = inSection(11);
+testThis(' /[/ ');
+
+status = inSection(12);
+testThis(' /[abc\\]def[g/ ');
+
+
+/*
+ * We permit unescaped, unbalanced right brackets, as does Perl.
+ * No error should result, even though this is not ECMA-compliant.
+ * Note we use checkThis() instead of testThis().
+ */
+status = inSection(13);
+checkThis(' /]/ ');
+
+status = inSection(14);
+checkThis(' /\\[abc]def]g/ ');
+
+
+/*
+ * These regexp patterns are correct and should not generate
+ * any errors. Note we use checkThis() instead of testThis().
+ */
+status = inSection(15);
+checkThis(' /\\[/ ');
+
+status = inSection(16);
+checkThis(' /\\]/ ');
+
+status = inSection(17);
+checkThis(' /[abc]def\\[g/ ');
+
+status = inSection(18);
+checkThis(' /[abc\\]def]g/ ');
+
+status = inSection(19);
+checkThis(' /(abc[\\]]def)g/ ');
+
+status = inSection(20);
+checkThis(' /[abc(x\\]yz+)def]g/ ');
+
+
+
+/*
+ * Run some tests for unbalanced braces. We again follow Perl, and
+ * thus permit unescaped unbalanced braces - both left and right,
+ * even though this is not ECMA-compliant.
+ *
+ * Note we use checkThis() instead of testThis().
+ */
+status = inSection(21);
+checkThis(' /abc{def/ ');
+
+status = inSection(22);
+checkThis(' /abc}def/ ');
+
+status = inSection(23);
+checkThis(' /a{2}bc{def/ ');
+
+status = inSection(24);
+checkThis(' /a}b{3}c}def/ ');
+
+
+/*
+ * These regexp patterns are correct and should not generate
+ * any errors. Note we use checkThis() instead of testThis().
+ */
+status = inSection(25);
+checkThis(' /abc\\{def/ ');
+
+status = inSection(26);
+checkThis(' /abc\\}def/ ');
+
+status = inSection(27);
+checkThis(' /a{2}bc\\{def/ ');
+
+status = inSection(28);
+checkThis(' /a\\}b{3}c\\}def/ ');
+
+
+
+
+//-----------------------------------------------------------------------------
+test();
+//-----------------------------------------------------------------------------
+
+
+
+
+/*
+ * Invalid syntax should generate a SyntaxError
+ */
+function testThis(sInvalidSyntax)
+{
+  expect = TEST_PASSED;
+  actual = TEST_FAILED_BADLY;
+
+  try
+  {
+    eval(sInvalidSyntax);
+  }
+  catch(e)
+  {
+    if (e instanceof SyntaxError)
+      actual = TEST_PASSED;
+    else
+      actual = TEST_FAILED;
+  }
+
+  statusitems[UBound] = status;
+  expectedvalues[UBound] = expect;
+  actualvalues[UBound] = actual;
+  UBound++;
+}
+
+
+/*
+ * Valid syntax shouldn't generate any errors
+ */
+function checkThis(sValidSyntax)
+{
+  expect = CHECK_PASSED;
+  actual = CHECK_PASSED;
+
+  try
+  {
+    eval(sValidSyntax);
+  }
+  catch(e)
+  {
+    actual = CHECK_FAILED;
+  }
+
+  statusitems[UBound] = status;
+  expectedvalues[UBound] = expect;
+  actualvalues[UBound] = actual;
+  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');
+}