Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame^] | 28 | // Flags: --allow-natives-syntax --expose-gc --noalways-opt |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 29 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 30 | function isHoley(obj) { |
| 31 | if (%HasFastHoleyElements(obj)) return true; |
| 32 | return false; |
| 33 | } |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 34 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 35 | function assertHoley(obj, name_opt) { |
| 36 | assertEquals(true, isHoley(obj), name_opt); |
Kristian Monsen | 81362e1 | 2011-02-04 12:39:27 +0000 | [diff] [blame] | 37 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 38 | |
| 39 | function assertNotHoley(obj, name_opt) { |
| 40 | assertEquals(false, isHoley(obj), name_opt); |
Ben Murdoch | b0fe162 | 2011-05-05 13:52:32 +0100 | [diff] [blame] | 41 | } |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 42 | |
| 43 | function create_array(arg) { |
| 44 | return new Array(arg); |
| 45 | } |
| 46 | |
| 47 | obj = create_array(0); |
| 48 | assertNotHoley(obj); |
| 49 | create_array(0); |
| 50 | %OptimizeFunctionOnNextCall(create_array); |
| 51 | obj = create_array(10); |
| 52 | assertHoley(obj); |
| 53 | |
| 54 | // The code below would assert in debug or crash in release |
| 55 | function f(length) { |
| 56 | return new Array(length) |
| 57 | } |
| 58 | |
| 59 | f(0); |
| 60 | f(0); |
| 61 | %OptimizeFunctionOnNextCall(f); |
| 62 | var a = f(10); |
| 63 | |
| 64 | function g(a) { |
| 65 | return a[0]; |
| 66 | } |
| 67 | |
| 68 | var b = [0]; |
| 69 | g(b); |
| 70 | g(b); |
| 71 | assertEquals(undefined, g(a)); |