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 --expose-gc 29// Flags: --noalways-opt 30 31function isHoley(obj) { 32 if (%HasFastHoleyElements(obj)) return true; 33 return false; 34} 35 36function assertHoley(obj, name_opt) { 37 assertEquals(true, isHoley(obj), name_opt); 38} 39 40function assertNotHoley(obj, name_opt) { 41 assertEquals(false, isHoley(obj), name_opt); 42} 43 44function create_array(arg) { 45 return new Array(arg); 46} 47 48obj = create_array(0); 49assertNotHoley(obj); 50create_array(0); 51%OptimizeFunctionOnNextCall(create_array); 52obj = create_array(10); 53assertHoley(obj); 54 55// The code below would assert in debug or crash in release 56function f(length) { 57 return new Array(length) 58} 59 60f(0); 61f(0); 62%OptimizeFunctionOnNextCall(f); 63var a = f(10); 64 65function g(a) { 66 return a[0]; 67} 68 69var b = [0]; 70g(b); 71g(b); 72assertEquals(undefined, g(a)); 73