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/*
* Copyright (c) 2002, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4660047
* @summary Tests if the JPEG reader/writer crashes the VM if certain methods
* are called after a call to dispose()
*/
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Iterator;
import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.ImageWriter;
import javax.imageio.stream.ImageInputStream;
import javax.imageio.stream.ImageOutputStream;
public class CrashAfterDispose {
public static void main(String[] args) throws IOException {
InputStream bais = new ByteArrayInputStream(new byte[100]);
ImageInputStream iis = ImageIO.createImageInputStream(bais);
// find the JPEG reader
ImageReader reader = null;
Iterator readers = ImageIO.getImageReadersByFormatName("jpeg");
if (readers.hasNext()) {
reader = (ImageReader)readers.next();
} else {
throw new RuntimeException("Unable to find a reader!");
}
// dispose the reader, then poke and prod it... the reader should
// throw exceptions (which will be caught by this test), but it
// should not crash the VM
reader.dispose();
try {
reader.setInput(iis);
} catch (IllegalStateException e) {
}
try {
reader.read(0);
} catch (IllegalStateException e) {
}
try {
reader.abort();
} catch (IllegalStateException e) {
}
try {
reader.reset();
} catch (IllegalStateException e) {
}
try {
reader.dispose();
} catch (IllegalStateException e) {
}
// find the JPEG writer
ImageWriter writer = null;
Iterator writers = ImageIO.getImageWritersByFormatName("jpeg");
if (writers.hasNext()) {
writer = (ImageWriter)writers.next();
} else {
throw new RuntimeException("Unable to find a writer!");
}
// set up output stream
OutputStream baos = new ByteArrayOutputStream();
ImageOutputStream ios = ImageIO.createImageOutputStream(baos);
BufferedImage bi = new BufferedImage(10, 10,
BufferedImage.TYPE_INT_RGB);
// dispose the writer, then poke and prod it... the writer should
// throw exceptions (which will be caught by this test), but it
// should not crash the VM
writer.dispose();
try {
writer.setOutput(ios);
} catch (IllegalStateException e) {
}
try {
writer.write(bi);
} catch (IllegalStateException e) {
}
try {
writer.abort();
} catch (IllegalStateException e) {
}
try {
writer.reset();
} catch (IllegalStateException e) {
}
try {
writer.dispose();
} catch (IllegalStateException e) {
}
}
}
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