Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 1 | // Copyright 2015 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | // Flags: --allow-natives-syntax |
| 6 | |
| 7 | var a = new Int32Array(100); |
| 8 | a.__proto__ = null; |
| 9 | |
| 10 | function get(a) { |
| 11 | return a.length; |
| 12 | } |
| 13 | |
| 14 | assertEquals(undefined, get(a)); |
| 15 | assertEquals(undefined, get(a)); |
| 16 | assertEquals(undefined, get(a)); |
| 17 | %OptimizeFunctionOnNextCall(get); |
| 18 | assertEquals(undefined, get(a)); |
| 19 | |
| 20 | get = function(a) { |
| 21 | return a.byteLength; |
| 22 | } |
| 23 | |
| 24 | assertEquals(undefined, get(a)); |
| 25 | assertEquals(undefined, get(a)); |
| 26 | assertEquals(undefined, get(a)); |
| 27 | %OptimizeFunctionOnNextCall(get); |
| 28 | assertEquals(undefined, get(a)); |
| 29 | |
| 30 | get = function(a) { |
| 31 | return a.byteOffset; |
| 32 | } |
| 33 | |
| 34 | assertEquals(undefined, get(a)); |
| 35 | assertEquals(undefined, get(a)); |
| 36 | assertEquals(undefined, get(a)); |
| 37 | %OptimizeFunctionOnNextCall(get); |
| 38 | assertEquals(undefined, get(a)); |
| 39 | |
| 40 | (function() { |
| 41 | "use strict"; |
| 42 | |
| 43 | class MyTypedArray extends Int32Array { |
| 44 | get length() { |
| 45 | return "length"; |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | a = new MyTypedArray(); |
| 50 | |
| 51 | get = function(a) { |
| 52 | return a.length; |
| 53 | } |
| 54 | |
| 55 | assertEquals("length", get(a)); |
| 56 | assertEquals("length", get(a)); |
| 57 | assertEquals("length", get(a)); |
| 58 | %OptimizeFunctionOnNextCall(get); |
| 59 | assertEquals("length", get(a)); |
| 60 | |
| 61 | a.__proto__ = null; |
| 62 | |
| 63 | get = function(a) { |
| 64 | return a.length; |
| 65 | } |
| 66 | |
| 67 | assertEquals(undefined, get(a)); |
| 68 | assertEquals(undefined, get(a)); |
| 69 | assertEquals(undefined, get(a)); |
| 70 | %OptimizeFunctionOnNextCall(get); |
| 71 | assertEquals(undefined, get(a)); |
| 72 | })(); |
| 73 | |
| 74 | (function() { |
| 75 | "use strict"; |
| 76 | |
| 77 | class MyTypedArray extends Int32Array { |
| 78 | constructor(length) { |
| 79 | super(length); |
| 80 | } |
| 81 | } |
| 82 | |
| 83 | a = new MyTypedArray(1024); |
| 84 | |
| 85 | get = function(a) { |
| 86 | return a.length; |
| 87 | } |
| 88 | |
| 89 | assertEquals(1024, get(a)); |
| 90 | assertEquals(1024, get(a)); |
| 91 | assertEquals(1024, get(a)); |
| 92 | %OptimizeFunctionOnNextCall(get); |
| 93 | assertEquals(1024, get(a)); |
| 94 | })(); |
| 95 | |
| 96 | (function() { |
| 97 | "use strict"; |
| 98 | var a = new Uint8Array(4); |
| 99 | Object.defineProperty(a, "length", {get: function() { return "blah"; }}); |
| 100 | get = function(a) { |
| 101 | return a.length; |
| 102 | } |
| 103 | |
| 104 | assertEquals("blah", get(a)); |
| 105 | assertEquals("blah", get(a)); |
| 106 | assertEquals("blah", get(a)); |
| 107 | %OptimizeFunctionOnNextCall(get); |
| 108 | assertEquals("blah", get(a)); |
| 109 | })(); |
| 110 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 111 | // Ensure we can delete length, byteOffset, byteLength. |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 112 | assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("length")); |
| 113 | assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("byteOffset")); |
| 114 | assertTrue(Int32Array.prototype.__proto__.hasOwnProperty("byteLength")); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 115 | assertTrue(delete Int32Array.prototype.__proto__.length); |
| 116 | assertTrue(delete Int32Array.prototype.__proto__.byteOffset); |
| 117 | assertTrue(delete Int32Array.prototype.__proto__.byteLength); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 118 | |
| 119 | a = new Int32Array(100); |
| 120 | |
| 121 | get = function(a) { |
| 122 | return a.length; |
| 123 | } |
| 124 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 125 | assertEquals(undefined, get(a)); |
| 126 | assertEquals(undefined, get(a)); |
| 127 | assertEquals(undefined, get(a)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 128 | %OptimizeFunctionOnNextCall(get); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 129 | assertEquals(undefined, get(a)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 130 | |
| 131 | get = function(a) { |
| 132 | return a.byteLength; |
| 133 | } |
| 134 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 135 | assertEquals(undefined, get(a)); |
| 136 | assertEquals(undefined, get(a)); |
| 137 | assertEquals(undefined, get(a)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 138 | %OptimizeFunctionOnNextCall(get); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 139 | assertEquals(undefined, get(a)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 140 | |
| 141 | get = function(a) { |
| 142 | return a.byteOffset; |
| 143 | } |
| 144 | |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 145 | assertEquals(undefined, get(a)); |
| 146 | assertEquals(undefined, get(a)); |
| 147 | assertEquals(undefined, get(a)); |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 148 | %OptimizeFunctionOnNextCall(get); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 149 | assertEquals(undefined, get(a)); |