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Mail Archives: djgpp-workers/2002/05/08/09:52:08

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Date: Wed, 8 May 2002 16:50:09 +0300 (IDT)
From: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender: eliz AT is
To: Andris Pavenis <pavenis AT latnet DOT lv>
cc: Nick Clifton <nickc AT cambridge DOT redhat DOT com>, djgpp-workers AT delorie DOT com,
gcc-patches AT gcc DOT gnu DOT org
Subject: Re: RFA: Ignore DOS end-of-line characters (ctrl-Z) unless -W
In-Reply-To: <Pine.LNX.4.21.0205081622560.26436-100000@gulbis.latnet.lv>
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On Wed, 8 May 2002, Andris Pavenis wrote:

> >   Gcc will issue a warning message if a source file contains a DOS
> >   end-of-file character (ctrl-Z).  The patch below silences this
> >   warning, unless the -W (extra warnings) switch is used.  This will
> >   allow source files created under DOS to be compiled without
> >   prejudice.
> > 
> >   May I apply this patch please ?
> 
> For DJGPP (i[3456]86-pc-msdosdjgpp) I tried to truncate input after 
> Ctrl-Z in gcc/cppfiles.c. ^Z is end-of-file for DOS anyway, so the
> correct action should perhaps be ignoring rest of file.

I agree with Andris: the right thing is to stop reading at the first ^Z 
character.  (A warning under -W is also okay, I think.)

If ignoring everything after ^Z is somehow a problem, please describe the 
situation where that problem happens.

Hmm, does this mean GCC reads files in binary mode?  (If not, the library 
will stop at the first ^Z, and GCC itself will never see any ^Zs.)

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