Kristian Monsen | 0d5e116 | 2010-09-30 15:31:59 +0100 | [diff] [blame] | 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. |