author | bpb |
Thu, 02 May 2019 14:15:09 -0700 | |
changeset 54694 | 948644e20013 |
parent 54316 | f714e4cebceb |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1999, 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 4260284 8219196 8223254 |
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* @summary Test if DataOutputStream will overcount written field. |
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* @requires (sun.arch.data.model == "64" & os.maxMemory >= 4g) |
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* @run testng/othervm -Xmx4g WriteUTF |
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*/ |
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import java.io.ByteArrayOutputStream; |
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import java.io.DataOutputStream; |
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import java.io.IOException; |
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import java.io.UTFDataFormatException; |
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import org.testng.annotations.Test; |
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public class WriteUTF { |
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@Test |
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public static void overcountWrittenField() throws IOException { |
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ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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DataOutputStream dos = new DataOutputStream(baos); |
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dos.writeUTF("Hello, World!"); // 15 |
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dos.flush(); |
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if (baos.size() != dos.size()) |
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throw new RuntimeException("Miscounted bytes in DataOutputStream."); |
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} |
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private static void writeUTF(int size) throws IOException { |
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// this character gives 3 bytes when encoded using UTF-8 |
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String s = "\u0800".repeat(size); |
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ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
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DataOutputStream dos = new DataOutputStream(bos); |
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dos.writeUTF(s); |
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} |
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@Test(expectedExceptions = UTFDataFormatException.class) |
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public void utfDataFormatException() throws IOException { |
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writeUTF(1 << 16); |
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} |
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// Without 8219196 fix, throws ArrayIndexOutOfBoundsException instead of |
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// expected UTFDataFormatException. Requires 4GB of heap (-Xmx4g) to run |
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// without throwing an OutOfMemoryError. |
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@Test(expectedExceptions = UTFDataFormatException.class) |
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public void arrayIndexOutOfBoundsException() throws IOException { |
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writeUTF(Integer.MAX_VALUE / 3 + 1); |
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} |
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} |