15d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// Copyright 2010 the V8 project authors. All rights reserved. 25d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// Redistribution and use in source and binary forms, with or without 35d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// modification, are permitted provided that the following conditions are 45d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// met: 55d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// 65d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// * Redistributions of source code must retain the above copyright 75d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// notice, this list of conditions and the following disclaimer. 85d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// * Redistributions in binary form must reproduce the above 95d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// copyright notice, this list of conditions and the following 105d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// disclaimer in the documentation and/or other materials provided 115d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// with the distribution. 125d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// * Neither the name of Google Inc. nor the names of its 135d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// contributors may be used to endorse or promote products derived 145d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// from this software without specific prior written permission. 155d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// 165d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 175d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 185d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 195d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 205d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 215d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 225d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 235d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 245d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 255d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 265d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 275d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 285d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// See: http://code.google.com/p/v8/issues/detail?id=1015 295d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 305d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// Object and array literals should be created using DefineOwnProperty, and 315d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org// therefore not hit setters in the prototype. 325d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 335d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.orgfunction mkFail(message) { 345d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org return function () { assertUnreachable(message); } 355d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org} 365d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 375d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.orgObject.defineProperty(Object.prototype, "foo", 385d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org {get: mkFail("oget"), set: mkFail("oset")}); 395d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.orgObject.defineProperty(Array.prototype, "2", 405d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org {get: mkFail("aget"), set: mkFail("aset")}); 415d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 425d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.orgfunction inFunction() { 435d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org for (var i = 0; i < 10; i++) { 445d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org // in loop. 455d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var ja = JSON.parse('[1,2,3,4]'); 465d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var jo = JSON.parse('{"bar": 10, "foo": 20}') 475d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}') 485d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var a = [1,2,3,4]; 495d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var o = { bar: 10, foo: 20 }; 505d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } }, 515d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org bar: 10 }; 525d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org } 535d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org} 545d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org 555d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.orgfor (var i = 0; i < 10; i++) { 565d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org // In global scope. 575d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var ja = JSON.parse('[1,2,3,4]'); 585d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var jo = JSON.parse('{"bar": 10, "foo": 20}') 595d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var jop = JSON.parse('{"bar": 10, "__proto__": { }, "foo": 20}') 605d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var a = [1,2,3,4]; 615d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var o = { bar: 10, foo: 20 }; 625d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org var op = { __proto__: { set bar(v) { assertUnreachable("bset"); } }, 635d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org bar: 10 }; 645d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org // In function scope. 655d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org inFunction(); 665d00b60c201d860c74821f553fdc34f4e057b411lrn@chromium.org} 67