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 30var bytes = new Uint8Array([ 31 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x7f]); // kHoleNaN 32var doubles = new Float64Array(bytes.buffer); 33assertTrue(isNaN(doubles[0])); 34 35var prototype = [2.5, 2.5]; 36var array = [3.5, 3.5]; 37array.__proto__ = prototype; 38assertTrue(%HasFastDoubleElements(array)); 39 40function boom(index) { 41 array[index] = doubles[0]; 42 return array[index]; 43} 44 45assertTrue(isNaN(boom(0))); 46assertTrue(isNaN(boom(0))); 47assertTrue(isNaN(boom(0))); 48 49// Test hydrogen 50%OptimizeFunctionOnNextCall(boom); 51assertTrue(isNaN(boom(0))); 52assertTrue(isNaN(boom(0))); 53assertTrue(isNaN(boom(0))); 54