1// Copyright 2013 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 28function s(v) { 29 v.x = 1; 30} 31 32function s_strict(v) { 33 "use strict"; 34 v.x = 1; 35} 36 37function c(p) { 38 return {__proto__: p}; 39} 40 41var p = {}; 42 43var o1 = c(p); 44var o2 = c(p); 45var o3 = c(p); 46var o4 = c(p); 47 48// Make p go slow. 49// Do this after using p as prototype, since using an object as prototype kicks 50// it back into fast mode. 51p.y = 1; 52delete p.y; 53p.x = 5; 54 55// Initialize the store IC. 56s(o1); 57s(o2); 58s_strict(o1); 59s_strict(o2); 60 61// Make x non-writable. 62Object.defineProperty(p, "x", { writable: false }); 63 64// Verify that direct setting fails. 65o3.x = 20; 66assertEquals(5, o3.x); 67 68// Verify that setting through the IC fails. 69s(o4); 70assertEquals(5, o4.x); 71assertThrows("s_strict(o4);", TypeError); 72