98 lines
3.6 KiB
Java
98 lines
3.6 KiB
Java
/*
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* Copyright (c) 2016, 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 8079136
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* @run testng NestedSubList
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* @summary Accessing a nested sublist leads to StackOverflowError
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*/
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import java.util.AbstractList;
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import java.util.Arrays;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Vector;
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import org.testng.annotations.Test;
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import org.testng.annotations.DataProvider;
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import static org.testng.Assert.fail;
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public class NestedSubList {
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static final int NEST_LIMIT = 65536;
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@Test(dataProvider="lists")
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public void testAccessToSublists(List<Integer> list, boolean modifiable) {
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Class<?> cls = list.getClass();
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for (int i = 0; i < NEST_LIMIT; ++i) {
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list = list.subList(0, 1);
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}
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try {
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list.get(0);
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if (modifiable) {
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list.remove(0);
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list.add(0, 42);
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}
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} catch (StackOverflowError e) {
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fail("failed for " + cls);
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}
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}
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@DataProvider
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public static Object[][] lists() {
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final boolean MODIFIABLE = true;
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final boolean NON_MODIFIABLE = false;
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List<Integer> c = Arrays.asList(42);
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return new Object[][] {
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{c, NON_MODIFIABLE},
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{new ArrayList<>(c), MODIFIABLE},
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{new LinkedList<>(c), MODIFIABLE},
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{new MyList(), NON_MODIFIABLE},
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{new Vector<>(c), MODIFIABLE},
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{Collections.singletonList(42), NON_MODIFIABLE},
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{Collections.checkedList(c, Integer.class), NON_MODIFIABLE},
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{Collections.checkedList(new ArrayList<>(c), Integer.class), MODIFIABLE},
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{Collections.checkedList(new LinkedList<>(c), Integer.class), MODIFIABLE},
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{Collections.checkedList(new Vector<>(c), Integer.class), MODIFIABLE},
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{Collections.synchronizedList(c), NON_MODIFIABLE},
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{Collections.synchronizedList(new ArrayList<>(c)), MODIFIABLE},
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{Collections.synchronizedList(new LinkedList<>(c)), MODIFIABLE},
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{Collections.synchronizedList(new Vector<>(c)), MODIFIABLE},
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{Collections.unmodifiableList(c), NON_MODIFIABLE},
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{Collections.unmodifiableList(new ArrayList<>(c)), NON_MODIFIABLE},
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{Collections.unmodifiableList(new LinkedList<>(c)), NON_MODIFIABLE},
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{Collections.unmodifiableList(new Vector<>(c)), NON_MODIFIABLE},
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};
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}
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static class MyList extends AbstractList<Integer> {
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public Integer get(int index) { return 42; }
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public int size() { return 1; }
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}
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}
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