/*
* Copyright ( c ) 1999 , 2019 , 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 4180429
@ summary Lossage in dup2 if System . in is closed .
@ run main / othervm Duped
*/
import java.io.BufferedReader;
import java.io.PrintStream;
import java.io.InputStreamReader;
import java.io.File;
public class Duped {
public static class Echo {
public static void main(String args[]) throws Exception {
StringBuffer s = new StringBuffer();
int c;
while ((c = System.in.read()) != -1 )
s.append((char )c);
System.out.println(s);
}
}
public static void main(String[] args) throws Exception {
String command =
System.getProperty("java.home" ) +
File.separator +
"bin" +
File.separator +
"java -classpath " +
System.getProperty("java.class.path" ) +
" Duped$Echo" ;
if (args.length == 1 && args[0 ].equals("-dont" )) {
/*
* To quickly check that this test is working when it is
* supposed to , just run it with - dont and it shouldn ' t
* complain at all .
*/
} else {
/*
* In normal runs we just close in , and that causes
* lossage on fork .
*/
System.in.close();
}
Process p = Runtime.getRuntime().exec(command);
PrintStream out = new PrintStream(p.getOutputStream());
out.println(HELLO);
out.close();
BufferedReader in =
new BufferedReader(new InputStreamReader(p.getInputStream()));
String read = in.readLine();
if (!HELLO.equals(read)) {
throw new Exception("Failed, read ``" + read + "''" );
}
}
static final String HELLO = "Hello, world!" ;
}
Messung V0.5 in Prozent C=93 H=94 G=93
¤ Dauer der Verarbeitung: 0.1 Sekunden
(vorverarbeitet am 2026-10-11)
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