Path: utzoo!attcan!uunet!jarthur!usc!wuarchive!zaphod.mps.ohio-state.edu!know!pluto.hemel.bull.co.uk!ckaye
From: ckaye@hemel.bull.co.uk (Chris Kaye)
Newsgroups: comp.mail.elm
Subject: Re: ELM 2.3 PL11 doesn't like Daylight Savings Time
Keywords: DST and ELM
Message-ID: <1991Mar2.182122.27698@hemel.bull.co.uk>
Date: 2 Mar 91 18:21:22 GMT
References: <1751@svin02.info.win.tue.nl>
Sender: @hemel.bull.co.uk
Organization: Bull HN UK
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devet@wsinis03.info.win.tue.nl (Arjan de Vet) writes:

>I was using ELM 2.3 PL11 to read usenet news stored in mail format, when I
>discovered that some folders were reported being 'Corrupt' by ELM. After
>deleting all kind of headers, special symbols etcetera I finally tried
>deleting the 'DST' from 'MET DST' (Middle European Time Daylight Savings
>Time) and then everything worked just fine. This 'DST' is present in the
>'From ' line.

>Has anyone noticed this before when using ELM for reading usenet news stored
>in mail folders?

Whilst investigating a different problem, I built and ran ELM 2.3 PL11 with
debug configured (see Makefile in src). When I receive any mail with a timezone
in the 'From ' line, a message is reported in the debugfile complaining about
the timezone. The problem appears to be a bug in function get_unix_date() in
addr_util.c. This function calls tz_lookup whilst pointing to the timezone in
the 'From ' line. Unfortunately, tz_lookup assumes that the timezone is the
only thing left in the buffer, which is all well and good when it is called
from parse_arpa_date(), but not from get_unix_date(). The problem described by
Arjan de Vet also appears to be a bug in the same file (addr_util.c). This time
the function is real_from() which can only deal with 7 and 8 fielded 'From '
lines. Unfortunately, DST timezones generate _9_ fielded 'From ' lines!

>--
>Arjan de Vet                         | E-mail : devet@win.tue.nl
>Dept. of Math. and Computing Science | tel: + 31 40 473705
>Eindhoven University of Technology   |      + 31 40 472733
>the Netherlands                      | fax: + 31 40 436685
--
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