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Edit File: regress-52801.js
// Copyright 2010 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Whenever we enter a with-scope, we copy the context. This in itself is fine // (contexts may escape), but when leaving a with-scope, we currently also copy // the context instead of reverting to the original. This does not work because // inner functions may already have been created using the original context. In // the failing test case below, the inner function is run in the original context // (where x is undefined), but the assignment to x after the with-statement is // run in the copied context: // RegExp caching doesn't set lastIndex correctly. // See http://code.google.com/p/chromium/issues/detail?id=52801 var re = /a/g; var str = "bbbbabbbbabbbb"; // Test re.test(str); assertEquals(5, re.lastIndex); re.lastIndex = 0; re.test(str); assertEquals(5, re.lastIndex); // Fails if caching. re.lastIndex = 0; re.test(str); assertEquals(5, re.lastIndex); // Fails if caching. // Exec re = /a/g; re.exec(str); assertEquals(5, re.lastIndex); re.lastIndex = 0; re.exec(str); assertEquals(5, re.lastIndex); // Fails if caching. re.lastIndex = 0; re.exec(str); assertEquals(5, re.lastIndex); // Fails if caching.