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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
11 // with the distribution. | 11 // with the distribution. |
12 // * Neither the name of Google Inc. nor the names of its | 12 // * Neither the name of Google Inc. nor the names of its |
13 // contributors may be used to endorse or promote products derived | 13 // contributors may be used to endorse or promote products derived |
14 // from this software without specific prior written permission. | 14 // from this software without specific prior written permission. |
15 // | 15 // |
16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | 27 |
| 28 this.__proto__ = null; |
| 29 this.x = 10; |
| 30 delete this.x; |
| 31 |
28 function s(v) { | 32 function s(v) { |
29 v.x = 1; | 33 return v.x = 1; |
30 } | 34 } |
31 | 35 |
32 function c(p) { | 36 function s_strict(v) { |
33 return {__proto__: p}; | 37 "use strict"; |
| 38 return v.x = 1; |
34 } | 39 } |
35 | 40 |
36 var p = {}; | 41 function c() { |
| 42 var o = {__proto__:this}; |
| 43 return o; |
| 44 } |
37 | 45 |
38 // Make p the last prototype in the chain. | 46 var o1 = c(); |
39 p.__proto__ = null; | 47 var o2 = c(); |
40 | 48 var o1_strict = c(); |
41 var o1 = c(p); | 49 var o2_strict = c(); |
42 var o2 = c(p); | 50 var o3 = c(); |
43 var o3 = c(p); | 51 var o4 = c(); |
44 var o4 = c(p); | |
45 | |
46 // Make y go to slow mode. | |
47 // Do this after using p as prototype, since using an object as prototype kicks | |
48 // it back into fast mode. | |
49 p.y = 1; | |
50 delete p.y; | |
51 | 52 |
52 // Initialize the store IC. | 53 // Initialize the store IC. |
53 s(o1); | 54 s(o1); |
54 s(o2); | 55 s(o2); |
| 56 s_strict(o1_strict); |
| 57 s_strict(o2_strict); |
55 | 58 |
56 // Do something with x in slow-mode p. | 59 Object.defineProperty(this, "x", {writable:false, configurable:true}); |
57 Object.defineProperty(p, "x", { writable: false, value: 5 }); | |
58 | 60 |
59 // Verify that directly setting x fails. | 61 // Verify that directly setting x fails. |
60 o3.x = 10; | 62 o3.x = 1; |
61 assertEquals(5, o3.x); | 63 assertEquals(undefined, o3.x); |
62 | 64 |
63 // Verify that setting x through the IC fails. | 65 // Verify that setting x through the IC fails. |
| 66 assertThrows("s_strict(o4)", TypeError); |
64 s(o4); | 67 s(o4); |
65 assertEquals(5, o4.x); | 68 assertEquals(undefined, o4.x); |
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