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1 // Copyright 2012 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 // Fix some corner cases in skipping native methods using caller. | |
29 var net = []; | |
30 | |
31 | |
32 var x = 0; | |
33 | |
34 function collect () { | |
35 function item(operator) { | |
36 binary(operator, 1, false); | |
37 binary(operator, 1, true); | |
38 binary(operator, '{}', false); | |
39 binary(operator, '{}', true); | |
40 binary(operator, '"x"', false); | |
41 binary(operator, '"x"', true); | |
42 unary(operator, ""); | |
43 } | |
44 | |
45 function unary(op, after) { | |
46 // Capture: | |
47 try { | |
48 eval(op + " custom " + after); | |
49 } catch(e) { | |
50 } | |
51 } | |
52 | |
53 function binary(op, other_side, inverted) { | |
54 // Capture: | |
55 try { | |
56 if (inverted) { | |
57 eval("custom " + op + " " + other_side); | |
58 } else { | |
59 eval(other_side + " " + op + " custom"); | |
60 } | |
61 } catch(e) { | |
62 } | |
63 } | |
64 | |
65 function catcher() { | |
66 var caller = catcher.caller; | |
67 if (/native/i.test(caller) || /ADD/.test(caller)) { | |
Yang
2012/09/04 12:43:57
Why do we only test for /ADD/, not for e.g. /MUL/?
Erik Corry
2012/09/05 07:22:33
If we ever change the stringification of native fu
| |
68 net[caller] = 0; | |
69 } | |
70 } | |
71 | |
72 var custom = Object.create(null, { | |
73 toString: { value: catcher }, | |
74 length: { get: catcher } | |
75 }); | |
76 | |
77 item('^'); | |
78 item('~'); | |
79 item('<<'); | |
80 item('<'); | |
81 item('=='); | |
82 item('>>>'); | |
83 item('>>'); | |
84 item('|'); | |
85 item('-'); | |
86 item('*'); | |
87 item('&'); | |
88 item('%'); | |
89 item('+'); | |
90 item('in'); | |
91 item('instanceof'); | |
92 unary('{}[', ']'); | |
93 unary('delete {}[', ']'); | |
94 unary('(function() {}).apply(null, ', ')'); | |
95 } | |
96 | |
97 collect(); | |
98 collect(); | |
99 collect(); | |
100 | |
101 var keys = 0; | |
102 for (var key in net) { | |
103 print(key); | |
104 keys++; | |
105 } | |
106 | |
107 assertTrue(keys == 0); | |
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