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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)) { |
| 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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