1 /* 2 * Copyright (c) 2013, 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 * @test 26 * @bug 8030016 27 * @summary computeIfAbsent would generate spurious access 28 */ 29 30 import java.util.*; 31 32 public class ComputeIfAbsentAccessOrder { 33 public static void main(String args[]) throws Throwable { 34 LinkedHashMap<String,Object> map = new LinkedHashMap<>(2, 0.75f, true); 35 map.put("first", null); 36 map.put("second", null); 37 38 map.computeIfAbsent("first", l -> null); // should do nothing 39 40 String key = map.keySet().stream() 41 .findFirst() 42 .orElseThrow(() -> new RuntimeException("no value")); 43 if(!"first".equals(key)) { 44 throw new RuntimeException("not expected value " + "first" + "!=" + key); 45 } 46 } 47 }