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// The type feedback oracle had a bug when retrieving the map from an IC 31// starting with a negative lookup. 32 33// Create a holder in fast mode. 34var holder = Object.create(null, { 35 holderMethod: {value: function() {}} 36}); 37assertTrue(%HasFastProperties(holder)); 38 39// Create a receiver into dictionary mode. 40var receiver = Object.create(holder, { 41 killMe: {value: 0, configurable: true}, 42}); 43delete receiver.killMe; 44assertFalse(%HasFastProperties(receiver)); 45 46// The actual function to test, triggering the retrieval of the wrong map. 47function callConstantFunctionOnPrototype(obj) { 48 obj.holderMethod(); 49} 50 51callConstantFunctionOnPrototype(receiver); 52callConstantFunctionOnPrototype(receiver); 53%OptimizeFunctionOnNextCall(callConstantFunctionOnPrototype); 54callConstantFunctionOnPrototype(receiver); 55 56// Make sure that the function is still optimized. 57assertOptimized(callConstantFunctionOnPrototype); 58