90 lines
2.8 KiB
Java
90 lines
2.8 KiB
Java
/*
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* Copyright (c) 1999, 2023, 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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/* @test
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@bug 4180429
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@summary Lossage in dup2 if System.in is closed.
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@requires vm.flagless
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@run main/othervm Duped
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*/
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import java.io.BufferedReader;
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import java.io.PrintStream;
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import java.io.InputStreamReader;
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import java.io.File;
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public class Duped {
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public static class Echo {
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public static void main(String args[]) throws Exception {
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StringBuffer s = new StringBuffer();
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int c;
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while ((c = System.in.read()) != -1)
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s.append((char)c);
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System.out.println(s);
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}
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}
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public static void main(String[] args) throws Exception {
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String command =
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System.getProperty("java.home") +
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File.separator +
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"bin" +
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File.separator +
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"java -classpath " +
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System.getProperty("java.class.path") +
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" Duped$Echo";
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if (args.length == 1 && args[0].equals("-dont")) {
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/*
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* To quickly check that this test is working when it is
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* supposed to, just run it with -dont and it shouldn't
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* complain at all.
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*/
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} else {
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/*
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* In normal runs we just close in, and that causes
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* lossage on fork.
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*/
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System.in.close();
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}
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Process p = Runtime.getRuntime().exec(command);
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PrintStream out = new PrintStream(p.getOutputStream());
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out.println(HELLO);
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out.close();
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BufferedReader in =
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new BufferedReader(new InputStreamReader(p.getInputStream()));
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String read = in.readLine();
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if (!HELLO.equals(read)) {
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throw new Exception("Failed, read ``" + read + "''");
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}
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}
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static final String HELLO = "Hello, world!";
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}
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