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 28// Flags: --allow-natives-syntax 29 30"use strict"; 31 32// Function is defined on the prototype chain. 33var holder = { f: function() { return 42; } }; 34var receiver = { }; 35receiver.__proto__ = { }; 36receiver.__proto__.__proto__ = holder; 37 38// Inline two levels. 39function h(o) { return o.f.apply(this, arguments); } 40function g(o) { return h(o); } 41 42// Collect type information for apply call. 43assertEquals(42, g(receiver)); 44assertEquals(42, g(receiver)); 45 46// Sneakily remove the function from the prototype chain. 47// The receiver map does not change. 48receiver.__proto__.__proto__ = {}; 49 50// Lookup of o.f during graph creation fails. 51%OptimizeFunctionOnNextCall(g); 52 53assertThrows(function() { g(receiver); }); 54 55// Put function back. 56receiver.__proto__.__proto__ = holder; 57assertEquals(42, g(receiver)); 58