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.
29var net = [];
30
31
32var x = 0;
33
34function 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)) {
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
97collect();
98collect();
99collect();
100
101var keys = 0;
102for (var key in net) {
103  print(key);
104  keys++;
105}
106
107assertTrue(keys == 0);
108