projects / apple / javascriptcore.git / blame
| Commit | Line | Data |
|---|---|---|
| f9bf01c6 | 1 | /* |
| ed1e77d3 | 2 | * Copyright (C) 2015 Apple Inc. All rights reserved. |
| f9bf01c6 A |
3 | * |
| 4 | * Redistribution and use in source and binary forms, with or without | |
| 5 | * modification, are permitted provided that the following conditions | |
| 6 | * are met: | |
| 7 | * 1. Redistributions of source code must retain the above copyright | |
| 8 | * notice, this list of conditions and the following disclaimer. | |
| 9 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 10 | * notice, this list of conditions and the following disclaimer in the | |
| 11 | * documentation and/or other materials provided with the distribution. | |
| 12 | * | |
| 13 | * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY | |
| 14 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 15 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
| 16 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR | |
| 17 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 18 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 19 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 20 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
| 21 | * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 22 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 23 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 24 | */ | |
| 25 | ||
| ed1e77d3 | 26 | // Regression test for https://bugs.webkit.org/show_bug.cgi?id=144152 |
| f9bf01c6 | 27 | |
| ed1e77d3 A |
28 | // The bug in 144152 needs 3 conditions to manifest: |
| 29 | // 1. The branch test value in the inlined function is of useKind ObjectOrOtherUse. | |
| 30 | // 2. The branch test value is proven to be a known useKind. | |
| 31 | // 3. The masqueradesAsUndefined watchpoint is no longer valid. | |
| 32 | // With the bug fixed, this test should not crash on debug builds. | |
| f9bf01c6 | 33 | |
| ed1e77d3 A |
34 | function inlinedFunction(x) { |
| 35 | if (x) // Conditional branch that will assert on a debug build if the bug is present. | |
| 36 | new Object; | |
| 93a37866 A |
37 | } |
| 38 | ||
| ed1e77d3 A |
39 | function foo(x) { |
| 40 | if (x) // Testing x before calling the inlined function sets up condition 2. | |
| 41 | inlinedFunction(x); | |
| f9bf01c6 A |
42 | } |
| 43 | ||
| ed1e77d3 A |
44 | makeMasquerader(); // Invalidates the masqueradesAsUndefined watchpoint for condition 3. |
| 45 | for (var i = 0; i < 10000; i++) | |
| 46 | foo({}); // Pass an object argument to set up condition 1. |