Red Hat Bugzilla – Bug 227888
RHEL-5 DST changes required for libgcj
Last modified: 2007-11-30 17:07:41 EST
Description of problem:
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/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libjava/classpath/scripts/timezones.pl from tzdata and very outdated.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):
Created attachment 147695 [details]
libgcj patch for DST timezone changes
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,
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if the solution does not work for you.