russell@unturf.com
0a580b313d
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
68 lines
2.3 KiB
Java
68 lines
2.3 KiB
Java
/*
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* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8234423
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* @summary Modifying ArrayList.subList().subList() resets modCount of subList
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*/
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import java.util.ArrayList;
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import java.util.ConcurrentModificationException;
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public class SubListModCount {
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public static void main(String[] args) {
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int failures = 0;
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var root = new ArrayList<Integer>();
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var subList = root.subList(0, 0);
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root.add(42);
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try {
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subList.size();
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failures++;
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System.out.println("Accessing subList");
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} catch (ConcurrentModificationException expected) {
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}
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var subSubList = subList.subList(0, 0);
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try {
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subSubList.size();
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failures++;
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System.out.println("Accessing subList.subList");
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} catch (ConcurrentModificationException expected) {
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}
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try {
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subSubList.add(42);
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failures++;
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System.out.println("Modifying subList.subList");
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} catch (ConcurrentModificationException expected) {
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}
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try {
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subList.size();
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failures++;
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System.out.println("Accessing subList again");
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} catch (ConcurrentModificationException expected) {
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}
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if (failures > 0) {
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throw new AssertionError(failures + " tests failed");
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}
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}
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}
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