JezK
Edit File: regress-1199637.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. // Flags: --allow-natives-syntax // Make sure that we can introduce global variables (using // both var and const) that shadow even READ_ONLY variables // in the prototype chain. const NONE = 0; const READ_ONLY = 1; // Use DeclareGlobal... %SetProperty(this.__proto__, "a", 1234, NONE); assertEquals(1234, a); eval("var a = 5678;"); assertEquals(5678, a); %SetProperty(this.__proto__, "b", 1234, NONE); assertEquals(1234, b); eval("const b = 5678;"); assertEquals(5678, b); %SetProperty(this.__proto__, "c", 1234, READ_ONLY); assertEquals(1234, c); eval("var c = 5678;"); assertEquals(5678, c); %SetProperty(this.__proto__, "d", 1234, READ_ONLY); assertEquals(1234, d); eval("const d = 5678;"); assertEquals(5678, d); // Use DeclareContextSlot... %SetProperty(this.__proto__, "x", 1234, NONE); assertEquals(1234, x); eval("with({}) { var x = 5678; }"); assertEquals(5678, x); %SetProperty(this.__proto__, "y", 1234, NONE); assertEquals(1234, y); eval("with({}) { const y = 5678; }"); assertEquals(5678, y); %SetProperty(this.__proto__, "z", 1234, READ_ONLY); assertEquals(1234, z); eval("with({}) { var z = 5678; }"); assertEquals(5678, z); %SetProperty(this.__proto__, "w", 1234, READ_ONLY); assertEquals(1234, w); eval("with({}) { const w = 5678; }"); assertEquals(5678, w);