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X-HELO:	calimero.vinschen.de
Date:	Wed, 9 Apr 2014 12:10:04 +0200
From:	Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To:	cygwin AT cygwin DOT com
Subject:	Re: 64-bit Heimdal/Cygwin, clock, daylight savings conundrum
Message-ID:	<20140409101004.GO2437@calimero.vinschen.de>
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On Apr  9 10:24, Henry S. Thompson wrote:
> [cygcheck attachements got through, but message didn't???]
>=20
> I'm running 64-bit Cygwin.  The problem described here occured both
> before and after upgrading from 1.7.28 to 1.7.29.  (Cygcheck attached
> to previous message).
>=20
> I'm in the UK, where summer time started 10 days ago.
>=20
> My Windows 8.1 laptop correctly gained an hour at that time.
>=20
> Yesterday it gained _another_ hour :-(.
>=20
> When I corrected the time by hand, kinit to my local host failed:
>=20
>  > kinit
>  [pwd]
>  kinit: krb5_get_init_creds: PREAUTH_FAILED
>=20
> This usually means timers are out of sync between client (me) and
> server.
>=20
> So I went to work on what I thought was the underlying problem, the
> mistaken time.  Fixed that, eventually, by fiddling with BIOS clock
> and its relation to the system clock.
>=20
> But the kinit problem didn't go away.
>=20
> However, _if_ I set the time one hour forward again, kinit succeeds.
>=20
> True weirdness follows.  I have 32-bit install as well (for xemacs)
> (Cygcheck attached to previous message).  Problem does _not_ manifest
> itself there.  kinit works _regardless_ of what the windows clock
> says.
>=20
> Has something changed with system clock vs. hardware clock between 32-
> and 64-bit cygwin?  Or am I looking in the wrong place altogether?

Hmm, maybe.  Apart from time_t being 64 bit (32 bit on i686), the
code for time handling is identical.  What's your $TZ set to?


Corinna

--=20
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Maintainer                 cygwin AT cygwin DOT com
Red Hat

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