ClosedStreams.java

/*
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 * 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.
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/*
 * @test
 * @bug 4997227
 * @summary Calling inheritedChannel() after FileDescriptor.in was closed
 *          caused an InternalError to be thrown.
 * @build ClosedStreams
 * @run main/othervm ClosedStreams
 */

import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.IOException;

public class ClosedStreams {
    public static void main(String args[]) throws IOException {

        // close FileDescriptor.in
        (new FileInputStream(FileDescriptor.in)).close();

        // get the inherited channel
        if (System.inheritedChannel() != null) {
            throw new RuntimeException("inherited channel not null - unexpected!");
        }
    }
}