1 // Copyright 2010 the V8 project authors. All rights reserved. 2 // Redistribution and use in source and binary forms, with or without 3 // modification, are permitted provided that the following conditions are 4 // met: 5 // 6 // * Redistributions of source code must retain the above copyright 7 // notice, this list of conditions and the following disclaimer. 8 // * Redistributions in binary form must reproduce the above 9 // copyright notice, this list of conditions and the following 10 // disclaimer in the documentation and/or other materials provided 11 // with the distribution. 12 // * Neither the name of Google Inc. nor the names of its 13 // contributors may be used to endorse or promote products derived 14 // from this software without specific prior written permission. 15 // 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 // Whenever we enter a with-scope, we copy the context. This in itself is fine 29 // (contexts may escape), but when leaving a with-scope, we currently also copy 30 // the context instead of reverting to the original. This does not work because 31 // inner functions may already have been created using the original context. In 32 // the failing test case below, the inner function is run in the original context 33 // (where x is undefined), but the assignment to x after the with-statement is 34 // run in the copied context: 35 36 // RegExp caching doesn't set lastIndex correctly. 37 // See http://code.google.com/p/chromium/issues/detail?id=52801 38 39 var re = /a/g; 40 41 var str = "bbbbabbbbabbbb"; 42 43 // Test 44 45 re.test(str); 46 assertEquals(5, re.lastIndex); 47 48 re.lastIndex = 0; 49 re.test(str); 50 assertEquals(5, re.lastIndex); // Fails if caching. 51 52 re.lastIndex = 0; 53 re.test(str); 54 assertEquals(5, re.lastIndex); // Fails if caching. 55 56 // Exec 57 58 re = /a/g; 59 60 re.exec(str); 61 assertEquals(5, re.lastIndex); 62 63 re.lastIndex = 0; 64 re.exec(str); 65 assertEquals(5, re.lastIndex); // Fails if caching. 66 67 re.lastIndex = 0; 68 re.exec(str); 69 assertEquals(5, re.lastIndex); // Fails if caching. 70
