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Edit File: bug-1344252.js
// Copyright 2008 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. // Test that setter accessors added to the prototype chain are called // when setting properties. // Test that accessors added to the prototype chain are called // eventhough there are inline caches for setting the property function F() { this.x = 42; this.y = 87; } // Force the inline caches to monomorphic state. new F(); new F(); // Add a setter for x to Object.prototype and make sure it gets // called. var result_x; Object.prototype.__defineSetter__('x', function(value) { result_x = value; }); var f = new F(); assertEquals(42, result_x); assertTrue(typeof f.x == 'undefined'); // Add a setter for y by changing the prototype of f and make sure // that gets called too. var result_y; var proto = new Object(); proto.__defineSetter__('y', function (value) { result_y = value; }); var f = new F(); f.y = undefined; f.__proto__ = proto; F.call(f); assertEquals(87, result_y); assertTrue(typeof f.y == 'undefined'); // Test the same issue in the runtime system. Make sure that // accessors added to the prototype chain are called instead of // following map transitions. // // Create two objects. var result_z; var o1 = new Object(); var o2 = new Object(); // Add a z property to o1 to create a map transition. o1.z = 32; // Add a z accessor in the prototype chain for o1 and o2. Object.prototype.__defineSetter__('z', function(value) { result_z = value; }); // The accessor should be called for o2. o2.z = 27; assertEquals(27, result_z); assertTrue(typeof o2.z == 'undefined');