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