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From: Juan Manuel Guerrero <juan DOT guerrero AT gmx DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: gcc difficulties on MSDOS 6.22 with LFN driver installed
Date: Fri, 2 Sep 2011 03:46:43 -0700 (PDT)
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On 2 Sep., 08:57, Eli Zaretskii <e DOT  DOT  DOT  AT gnu DOT org> wrote:
> > From: Juan Manuel Guerrero <juan DOT guerr DOT  DOT  DOT  AT gmx DOT de>
> > Date: Thu, 1 Sep 2011 15:19:03 -0700 (PDT)
>
> > OFYI, I have djgpp 2.03 installed on the same partition with the same
> > MSDOS 6.22 so I can choose if I want to compile with 2.04 or 2.03.
> > gcc 4.6.1 and djgpp-2.03 work flawlessly.
>
> Wait a minute.  Are you saying that the problem is _only_ with GCC
> compiled with DJGPP 2.04, and that 2.03-compiled GCC works?  I don't
> think you said that before.
>
> If you compile with v2.03 a simple program that calls 7A46, and then
> run it with DOSLFN, does it also fail?
>
> If so, this is certainly due to the use of 7A46, because in v2.03
> `filelength' didn't call that function and `lfilelength' didn't exist
> at all.
>
> So I think we need to fix these 2 functions to work around this
> problem.

Sorry for having been  imprecise.  I usualy do not use djgpp 2.03
anymore
so I did not note that the gcc version compiled with 2.03 worked.
Yes, you are right, the problem is only with 2.04's  `filelength' and
`lfilelength'.
Both use 71A6 and fail with EOVERFLOW under certain circunstances.
The only thing we need to do is to fix both functions so they work
like
the 2.03 versions if the 71A6 call fails with EOVERFLOW.

Regards,
Juan M. Guerrero