Bug 227888 - RHEL-5 DST changes required for libgcj
Summary: RHEL-5 DST changes required for libgcj
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: gcc
Version: 5.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Jakub Jelinek
QA Contact: David Lawrence
Depends On:
TreeView+ depends on / blocked
Reported: 2007-02-08 19:36 UTC by Alan Matsuoka
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Fixed In Version: RHBA-2007-0100
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-03-14 15:10:57 UTC
Target Upstream Version:

Attachments (Terms of Use)
libgcj patch for DST timezone changes (20.42 KB, patch)
2007-02-08 19:36 UTC, Alan Matsuoka
no flags Details | Diff

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2007:0100 0 normal SHIPPED_LIVE gcc bug fix update 2007-03-14 15:10:49 UTC

Description Alan Matsuoka 2007-02-08 19:36:49 UTC
Description of problem:
(From jakub@redhat.com)
Some customers consider tzdata 2005m changes as "the upcoming DST" changes,
as if tzdata did not change 20 times or so a year.
So guess the question is if gcj has its own tzdata copy like the various
proprietary JVMs have and its own tzdata parser.
I see something what looks like a tzdata file parser in
libjava/java/util/VMTimeZone.java (and
libjava/classpath/vm/reference/java/util/VMTimeZone.java), but am not sure what
exactly it is used for and whether that reads just /etc/localtime, or other
/usr/share/zoneinfo/ files too.
Additionally there seems to be a hardcoded extremely simplified data
in libjava/classpath/java/util/TimeZone.java, apparently generated with
libjava/classpath/scripts/timezones.pl from tzdata and very outdated.

I rerun that script on tzdata2007a to see what the differences would be
and patch is attached.

More importantly, I wonder whether it really has to have a pregenerated
table compiled in, whether that's not something it should create on the fly
by reading /usr/share/zoneinfo/ files.

Version-Release number of selected component (if applicable):

Comment 1 Alan Matsuoka 2007-02-08 19:36:49 UTC
Created attachment 147695 [details]
libgcj patch for DST timezone changes

Comment 11 Red Hat Bugzilla 2007-03-14 15:10:57 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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