<i18n dev> Open Jdk Timezone bug?
Masayoshi Okutsu
Masayoshi.Okutsu at Sun.COM
Wed Dec 2 15:33:23 PST 2009
Hmm... I don't know why it picks up SystemV/CST6CDT while the detected
time zone ID is America/Chicago.
Bill, could you set the TZ environment variable to "America/Chicago" and
run a jre to see what happens?
Thanks,
Masayoshi
On 12/3/2009 5:54 AM, Bill Tims (RSI) wrote:
> Andrew
>
> I've signed up and hopefully this will show up on the list.
> The program is attached. I ran it, with test2(), with strace and grep'd for javazi and got:
>
> 6205 stat64("/usr/share/javazi/ZoneInfoMappings", 0xb7328d4c) = -1 ENOENT (No such file or directory)
> ...
> 6205 access("/usr/lib/jvm/java-6-openjdk/jre/lib/zi/SystemV/CST6CDT", R_OK) = 0
> 6205 stat64("/usr/lib/jvm/java-6-openjdk/jre/lib/zi/SystemV/CST6CDT", {st_mode=S_IFREG|0644, st_size=2288, ...}) = 0
> 6205 open("/usr/lib/jvm/java-6-openjdk/jre/lib/zi/SystemV/CST6CDT", O_RDONLY|O_LARGEFILE) = 5
> ......
> 6205 read(5, "javazi\0\1\4\10\240\377\337\332\340\35\300\0!\377\340;"..., 2288) = 2288
>
> If I read this right it is using the CST6CDT file to get the incorrect results. I'd rather not update the entire jre if I don't have to. Everything else is working file...so far.
>
> Bill Tims
> Renaissance Systems, Inc.
> 5426 Guadalupe, Suite 100
> Austin, TX 78751
> 512-275-0344
>
>
> -----Original Message-----
> From: gnu.andrew.rocks at gmail.com [mailto:gnu.andrew.rocks at gmail.com] On Behalf Of Andrew John Hughes
> Sent: Wednesday, December 02, 2009 2:10 PM
> To: Bill Tims (RSI)
> Cc: Masayoshi Okutsu; i18n-dev at openjdk.java.net
> Subject: Re: <i18n dev> Open Jdk Timezone bug?
>
> 2009/12/2 Bill Tims (RSI) <btims at rsitex.com>:
>
>> Andrew/Masayoshi
>>
>> After some research it appears that we have the openjdk-6-jre-lib package, version b11, installed and it is current according to Ubuntu.
>>
>
> Ok, newer versions will also include the IcedTea version in java -version,
>
> $ /home/andrew/build/icedtea6/bin/java -version java version "1.6.0_0"
> OpenJDK Runtime Environment (IcedTea6 1.7pre-r1b34da20e2d1) (build 1.6.0_0-b17) OpenJDK 64-Bit Server VM (build 16.0-b10, mixed mode)
>
> but I think those that use OpenJDK6 b11 are too old to do so.
>
>
>> The latest openjdk-6-jre has the same version number. Masayoshi indicates in an earlier email that the current version is 6u17.
>>
>
> The latest is b17, the number Masayoshi quotes sounds like a version of the proprietary JDK6 (as you are using on Windows, 6u7 in that
> case) rather than an OpenJDK6 version.
> It would be nice if such responses were posted to the public list...
>
>
>> When I run the app I wrote (I've added a dump of the version info from system properties) that displays the offset for America/Chicago for 1900 I get:
>> version=1.6.0_0
>> vendor=Sun Microsystems Inc.
>> java.vm.specification.version=1.0
>> java.vm.specification.vendor=Sun Microsystems Inc.
>> java.vm.version=1.6.0_0-b11
>> java.vm.vendor=Sun Microsystems Inc.
>> timezone.id=America/Chicago
>> date=Mon Jan 01 00:00:00 CDT 1900
>> 1900/0:-18000000
>> 1900/1:-18000000
>> 1900/2:-18000000
>> 1900/3:-18000000
>> 1900/4:-18000000
>> 1900/5:-18000000
>> 1900/6:-18000000
>> 1900/7:-18000000
>> 1900/8:-18000000
>> 1900/9:-18000000
>> 1900/10:-21600000
>> 1900/11:-21600000
>>
>> The display is year/month#:offset.
>> The same program running under the Sun jdk on windows gives me:
>> version=1.6.0_07
>> vendor=Sun Microsystems Inc.
>> java.vm.specification.version=1.0
>> java.vm.specification.vendor=Sun Microsystems Inc.
>> java.vm.version=10.0-b23
>> java.vm.vendor=Sun Microsystems Inc.
>> timezone.id=America/Chicago
>> date=Mon Jan 01 00:00:00 CST 1900
>> 1900/0:-21600000
>> 1900/1:-21600000
>> 1900/2:-21600000
>> 1900/3:-21600000
>> 1900/4:-21600000
>> 1900/5:-21600000
>> 1900/6:-21600000
>> 1900/7:-21600000
>> 1900/8:-21600000
>> 1900/9:-21600000
>> 1900/10:-21600000
>> 1900/11:-21600000
>>
>>
>
> Do you have a simple test case (probably creating a Date object and printing it would be enough)?
> If you want to know what timezone data is actually being used, you can run something like strace -o out -f java TestApp and the resulting file, out, will show the C calls being made to open the timezone data files.
> My guess is that the Ubuntu version uses /usr/share/javazi rather than the OpenJDK timezone data (which, for OpenJDK6, is very outdated - fixing that is on my TODO list).
> This is due to the patch icedtea-use-system-tzdata.patch in IcedTea which contains:
>
> + SystemProperty* sp = Arguments::system_properties(); // Use the
> + system zoneinfo files, if present Arguments::PropertyList_add (&sp,
> + new
> SystemProperty("user.zoneinfo.dir", "/usr/share/javazi",true));
> +
>
> A newer version was submitted upstream but has not yet been approved:
>
> http://mail.openjdk.java.net/pipermail/i18n-dev/2009-August/000136.html
>
> (it's debatable whether such a fix is needed over just a simple symlink).
>
>
>> Bill
>>
>> Bill Tims
>> Renaissance Systems, Inc.
>> 5426 Guadalupe, Suite 100
>> Austin, TX 78751
>> 512-275-0344
>>
>>
>> -----Original Message-----
>> From: gnu.andrew.rocks at gmail.com [mailto:gnu.andrew.rocks at gmail.com]
>> On Behalf Of Andrew John Hughes
>> Sent: Wednesday, December 02, 2009 8:54 AM
>> To: Masayoshi Okutsu
>> Cc: Bill Tims (RSI); i18n-dev at openjdk.java.net
>> Subject: Re: <i18n dev> Open Jdk Timezone bug?
>>
>> 2009/12/1 Masayoshi Okutsu <Masayoshi.Okutsu at sun.com>:
>>
>>> What is the time zone ID you are using?
>>>
>>> Thanks,
>>> Masayoshi
>>>
>>> On 12/1/2009 1:55 AM, Bill Tims (RSI) wrote:
>>>
>>>> From what I can find, this appears to be the right place to post
>>>> this, if I'm wrong I would appreciate a pointer to the proper location.
>>>> The database our app has to talk to has January 1,1900 12:00:00 am
>>>> date in it. When I load the value into a open jdk date object
>>>> (using Ubuntu/JBoss 4.2.3 GA-jdk6) I get December 31, 1899 23:00:00.
>>>> When I do the same thing on my dev box (Win XP/Sun jre 1.6.0_07) I
>>>> get January 1, 1900 12:00:00 am. I wrote a test program that prints
>>>> out the Timezone info for 1898-1902 and it appears that the open jdk
>>>> has a daylight savings time starting on Jan 1, 1900 through Oct 1,
>>>> 1900 and the sun version doesn't. According to Wikipedia, Daylight
>>>> savings wasn't suggested until 1907.
>>>> I can't find anything on the web that suggests where the timezone
>>>> info is kept or how complicated it will be to rebuild whatever jar
>>>> file is required. Can someone point me to the proper source file and
>>>> suggest how involved building the fix will be?
>>>> Thanks
>>>> Bill
>>>> !
>>>>
>>>> Bill Tims
>>>>
>>>> Renaissance Systems, Inc.
>>>>
>>>>
>>>>
>>>>
>> You don't give any details of the OpenJDK version - what does 'java -version' give on your Ubuntu box?
>> If this is the system OpenJDK build, then it's an IcedTea build and thus includes a patch to use the system timezone data which is likely to be more up-to-date than that bundled with Sun's JDK.
>> --
>> Andrew :-)
>>
>> Free Java Software Engineer
>> Red Hat, Inc. (http://www.redhat.com)
>>
>> Support Free Java!
>> Contribute to GNU Classpath and the OpenJDK
>> http://www.gnu.org/software/classpath
>> http://openjdk.java.net
>>
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>>
>>
>
>
>
> --
> Andrew :-)
>
> Free Java Software Engineer
> Red Hat, Inc. (http://www.redhat.com)
>
> Support Free Java!
> Contribute to GNU Classpath and the OpenJDK http://www.gnu.org/software/classpath
> http://openjdk.java.net
>
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