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