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Re: Fixing tm_gmtoff behaviour on Win32 (again)

From: Branko Čibej <brane_at_xbc.nu>
Date: 2002-06-09 22:32:15 CEST

Since there were no objections, I committed this change. tm_gmtoff on
has the same semantics now on Windows as on Unix.

Branko Čibej wrote:

> Subversion got bitten by the APR time functions on Windows again. The
> culprit, as usual, was incorrect semantics of the tm_gmtoff field in
> apr_time_exp_t in the presence of DST. I decided that enough was
> enough, and it was time to do something about it.
> It turned out that none of the tests in testtime.c tickled that
> particular problem, so I added a test case (see patch below). The test
> passed on Unix with and withoug DST, and failed on Windows with DST
> enabled; again, as expected.
> I tracked down the provblem to the way tm_gmtoff was computed from the
> system's timezone info. Reading the docs for GetTimezoneInformation
> suggested that we should be using the StandardBias and DaylightBias
> fields compute tm_gmtoff, so that's what I did. The test now passes on
> Win2k (and presumably NT and XP) both with and without DST, and the
> relevant Subversion test passes, too.
> Now, before I commit this patch, I'd like to ask people to test it on
> Win95/98/Me (and possibly WinCE). I don't have access to any of these
> platforms, and the docs suggest there may be some difference on the
> Win9x series at least.
> Thanks,
> Brane

Brane Čibej   <brane_at_xbc.nu>   http://www.xbc.nu/brane/
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Received on Sun Jun 9 22:33:21 2002

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