1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * JDK-8171219: Missing checks in sparse array shift() implementation 26 * 27 * @test 28 * @run 29 */ 30 31 var a = []; 32 a[1048577] = 1; 33 a.shift(); 34 a[1] = 2; 35 a.shift(); 36 var ka = Object.keys(a); 37 Assert.assertTrue(ka.length === 2); 38 Assert.assertTrue(ka[0] === '0'); 39 Assert.assertTrue(ka[1] === '1048575'); 40 Assert.assertTrue(a.length === 1048576); 41 Assert.assertTrue(a[0] === 2); 42 Assert.assertTrue(a[1048575] = 1); 43 44 var b = []; 45 b[1048577] = 1; 46 b.unshift(2); 47 b.shift(); 48 b[1] = 3; 49 b.shift(); 50 var kb = Object.keys(b); 51 Assert.assertTrue(kb.length === 2); 52 Assert.assertTrue(kb[0] === '0'); 53 Assert.assertTrue(kb[1] === '1048576'); 54 Assert.assertTrue(b.length === 1048577); 55 Assert.assertTrue(b[0] === 3); 56 Assert.assertTrue(b[1048576] = 1); 57