1// Copyright 2012 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// Ensure extending an empty packed smi array with a double initializes the 29// array with holes. 30var a = [1,2,3]; 31a.length = 0; 32a[0] = 1.4; 33assertEquals(1.4, a[0]); 34assertEquals(undefined, a[1]); 35assertEquals(undefined, a[2]); 36assertEquals(undefined, a[3]); 37 38// Ensure the double array growstub initializes the array with holes. 39function grow_store(a,i,v) { 40 a[i] = v; 41} 42 43var a2 = [1.3]; 44grow_store(a2,1,1.4); 45a2.length = 0; 46grow_store(a2,0,1.5); 47assertEquals(1.5, a2[0]); 48assertEquals(undefined, a2[1]); 49assertEquals(undefined, a2[2]); 50assertEquals(undefined, a2[3]); 51 52// Check storing objects using the double grow stub. 53var a3 = [1.3]; 54var o = {}; 55grow_store(a3, 1, o); 56assertEquals(1.3, a3[0]); 57assertEquals(o, a3[1]); 58 59// Ensure the double array growstub initializes the array with holes. 60function grow_store2(a,i,v) { 61 a[i] = v; 62} 63 64var a4 = [1.3]; 65grow_store2(a4,1,1.4); 66a4.length = 0; 67grow_store2(a4,0,1); 68assertEquals(1, a4[0]); 69assertEquals(undefined, a4[1]); 70assertEquals(undefined, a4[2]); 71assertEquals(undefined, a4[3]); 72