1 /*
 2  * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 7  * published by the Free Software Foundation.
 8  *
 9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
16  * 2 along with this work; if not, write to the Free Software Foundation,
17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18  *
19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20  * or visit www.oracle.com if you need additional information or have any
21  * questions.
22  */
23 
24 /* @test
25    @bug 4180429
26    @summary Lossage in dup2 if System.in is closed.
27    @run main/othervm Duped
28  */
29 
30 import java.io.BufferedReader;
31 import java.io.PrintStream;
32 import java.io.InputStreamReader;
33 import java.io.File;
34 
35 public class Duped {
36 
37     public static class Echo {
38         public static void main(String args[]) throws Exception {
39             StringBuffer s = new StringBuffer();
40             int c;
41             while ((c = System.in.read()) != -1)
42                 s.append((char)c);
43             System.out.println(s);
44         }
45     }
46 
47     public static void main(String[] args) throws Exception {
48 
49         String command =
50             System.getProperty("java.home") +
51             File.separator +
52             "bin" +
53             File.separator +
54             "java -classpath " +
55             System.getProperty("java.class.path") +
56             " Duped$Echo";
57 
58         if (args.length == 1 && args[0].equals("-dont")) {
59             /*
60              * To quickly check that this test is working when it is
61              * supposed to, just run it with -dont and it shouldn't
62              * complain at all.
63              */
64         } else {
65             /*
66              * In normal runs we just close in, and that causes
67              * lossage on fork.
68              */
69             System.in.close();
70         }
71 
72         Process p = Runtime.getRuntime().exec(command);
73         PrintStream out = new PrintStream(p.getOutputStream());
74         out.println(HELLO);
75         out.close();
76 
77         BufferedReader in =
78             new BufferedReader(new InputStreamReader(p.getInputStream()));
79         String read = in.readLine();
80 
81         if (!HELLO.equals(read)) {
82             throw new Exception("Failed, read ``" + read + "''");
83         }
84     }
85 
86     static final String HELLO = "Hello, world!";
87 
88 }