Sender: itm AT dra DOT hmg DOT gb
Message-ID: <332FAB17.41C67EA6@dra.hmg.gb>
Date: Wed, 19 Mar 1997 09:00:07 +0000
From: Ian Miller <itmiller AT dra DOT hmg DOT gb>
Organization: DRA
MIME-Version: 1.0
To: DJGPP workers <djgpp-workers AT delorie DOT com>
Subject: Re: The "Can't backup file..." patch Win95+LFN bug
References: <Pine DOT SUN DOT 3 DOT 91 DOT 970318142027 DOT 17465O-100000 AT is>
Content-Type: text/plain; charset=us-ascii
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Eli Zaretskii wrote:
> 
> On Mon, 17 Mar 1997, Ian Miller wrote:
> 
> > So, IMHO, either this is because I built my libc with LFN undefined
> > or the distributed patch.exe was built with an old libc.
> 
> ...patch.exe from pat21b.zip that I have (size
> 117248 bytes, date Oct 19, 1996) is built with a library that was
> itself built on Oct 19, so this is the latest libc.
> 
>                 strings -a patch.exe | less
> 
>    $Id: DJGPP libc built Oct 19 1996 11:26:11 by gcc 2.7.2.1 $

I have confirmed that my copies of pat21b.zip and pat21s.zip are
up to date DJGPP v2.01 releases.

	ident patch.exe

gives

patch.exe:
     $Id: stub.asm built 10/05/96 20:49:00 by djasm $
     $Header: patch.c,v 2.0.2.0 90/05/01 22:17:50 davison Locked $
     $Id: DJGPP libc built Oct 19 1996 11:26:11 by gcc 2.7.2.1 $

I created a couple of small files and a context diff between them:

*** j1.txt	Wed Mar 19 00:12:38 1997
--- juvenile.txt	Wed Mar 19 00:12:36 1997
***************
*** 1 ****
! Peter
--- 1 ----
! Peter Pan

I replaced the contents of juvenile.txt with those of j1.txt.

When I applied the patch using the pat21b.zip patch.exe I got

Hmm...  Looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|*** j1.txt	Wed Mar 19 00:12:38 1997
|--- juvenile.txt	Wed Mar 19 00:12:36 1997
--------------------------
Patching file juvenile.txt using Plan A...
Hunk #1 succeeded at 1.
Can't backup juvenile.txt, output is in g:/djgpp/tmp/pobaaaaa: No such
file or directory (ENOENT)
done

When I applied the patch using patch.exe compiled at home from
pat21s.zip I got

Hmm...  Looks like a new-style context diff to me...
The text leading up to this was:
--------------------------
|*** j1.txt	Wed Mar 19 00:12:38 1997
|--- juvenile.txt	Wed Mar 19 00:12:36 1997
--------------------------
Patching file juvenile.txt using Plan A...
Hunk #1 succeeded at 1.
done

This is repeatable ad infinitum, and the fact that juvenile.txt is
8+3 does not seem to be a factor.

...[Much work]...

You may find the following facts interesting. The date of patch.exe
in pat21b.zip is 19th Oct 1996. The date of djlsr201.zip is
31st Oct 1996. The date of _rename.c within djlsr201.zip is
25th Oct 1996.

Hmmm. Like I said in the first place, the distributed patch.exe was
built with an old libc.

Regards
-- 
Ian Miller, Dorset, UK
DJGPP 2.01, Win95 DOS box (LFN undefined, FNCASE=y)