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