Bug#203212: libgcj4: gcj handles timezones wrongly

[Stepan Koltsov]

Package: libgcj4
Version: 1:3.3.1-0rc1
Severity: normal


At first, I am not sure it is bug of libgcj, I report bug here beacuse
both gij and gcj depends on this package. The bug is: gij subtracts
time from GMT time when it should add. Look at output below:

# TZ='Europe/Kaliningrad'; export TZ
# gij Main
Mon Jul 28 13:19:15 GMT-02:00 2003
# java Main
Mon Jul 28 18:19:22 EEST 2003
# date
Mon Jul 28 18:19:24 EEST 2003
# TZ='Europe/Moscow'; export TZ
# gij Main
Mon Jul 28 12:19:33 GMT-03:00 2003
# java Main
Mon Jul 28 19:19:37 MSD 2003
# date
Mon Jul 28 19:19:39 MSD 2003

Moscow's timezone is GMT+3 at summer, not GMT-3.

java is Sun's Java.

# cat Main.java
import java.util.*;
public class Main {
public static void main(String[] args) {
System.out.println(new Date());
}
}
#


-- System Information:
Debian Release: testing/unstable
Architecture: i386
Kernel: Linux banana.mx1.ru 2.4.18 #3 Thu Jun 27 17:31:10 UTC 2002 i686
Locale: LANG=ru_RU.KOI8-R, LC_CTYPE=ru_RU.KOI8-R

Versions of packages libgcj4 depends on:
ii  libc6   2.3.1-17 GNU C Library: Shared libraries an
ii  libgcc1 1:3.3.1-0rc1 GCC support library
ii  libgcj-common   1:3.3.1-0rc1 Java runtime library (common files
ii  xlibs   4.2.1-8  X Window System client libraries
ii  zlib1g  1:1.1.4-13   compression library - runtime

-- no debconf information

HashMap serialization does not work

[Stepan Koltsov]

>Submitter-Id:  net
>Originator:Stepan Koltsov
>Organization:  
>Confidential:  no
>Synopsis: HashMap serialization does not work
>Severity: serious
>Priority:  medium
>Category:  libgcj
>Class: sw-bug
>Release:   3.3.1 20030722 (Debian prerelease) (Debian testing/unstable)
>Environment:
System: Linux banana.mx1.ru 2.4.18 #3 Thu Jun 27 17:31:10 UTC 2002 i686 
GNU/Linux
Architecture: i686


host: i386-pc-linux-gnu
build: i386-pc-linux-gnu
target: i386-pc-linux-gnu
configured with: ../src/configure -v 
--enable-languages=c,c++,java,f77,pascal,objc,ada,treelang --prefix=/usr 
--mandir=/usr/share/man --infodir=/usr/share/info 
--with-gxx-include-dir=/usr/include/c++/3.3 --enable-shared --with-system-zlib 
--enable-nls --without-included-gettext --enable-__cxa_atexit 
--enable-clocale=gnu --enable-debug --enable-java-gc=boehm 
--enable-java-awt=xlib --enable-objc-gc i386-linux
>Description:

Library serialize class HashMap incorrectly -- it reads empty map from stream.

>How-To-Repeat:

Source code:

===
import java.io.*;
import java.util.*;

public class Main {
public static void main(String[] args) throws Exception {
ObjectOutputStream oo =
new ObjectOutputStream(new 
FileOutputStream("1"));
Map m = new HashMap();
m.put("12", "13");
m.put("45", "67");
System.out.println(m);
oo.writeObject(m);
oo.close();

ObjectInputStream ii =
new ObjectInputStream(new FileInputStream("1"));
Object n = ii.readObject();
System.out.println(n);
}
}
===

Prints 

{12=13, 45=67}
{}

when invoking class with gij or after compiling with gcj, on Linux and FreeBSD.
It should print

{12=13, 45=67}
{12=13, 45=67}

this is output of Sun's Java.

>Fix:

I don't know.