JezK
Edit File: regress-186.js
// Copyright 2009 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Make sure that eval can introduce a local variable called __proto__. // See http://code.google.com/p/v8/issues/detail?id=186 var setterCalled = false; var o = {}; o.__defineSetter__("x", function() { setterCalled = true; }); function runTest(test) { setterCalled = false; test(); } function testLocal() { // Add property called __proto__ to the extension object. eval("var __proto__ = o"); // Check that the extension object's prototype did not change. eval("var x = 27"); assertFalse(setterCalled, "prototype of extension object changed"); assertEquals(o, eval("__proto__")); } function testConstLocal() { // Add const property called __proto__ to the extension object. eval("const __proto__ = o"); // Check that the extension object's prototype did not change. eval("var x = 27"); assertFalse(setterCalled, "prototype of extension object changed"); assertEquals(o, eval("__proto__")); } function testGlobal() { // Assign to the global __proto__ property. eval("__proto__ = o"); // Check that the prototype of the global object changed. eval("x = 27"); assertTrue(setterCalled, "prototype of global object did not change"); setterCalled = false; assertEquals(o, eval("__proto__")); } runTest(testLocal); runTest(testConstLocal); runTest(testGlobal);