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Re: preprocessor/7029: preprocessor should ignore #warning with -M
- From: Zack Weinberg <zack at codesourcery dot com>
- To: nobody at gcc dot gnu dot org
- Cc: gcc-prs at gcc dot gnu dot org,
- Date: 1 Jul 2002 21:36:07 -0000
- Subject: Re: preprocessor/7029: preprocessor should ignore #warning with -M
- Reply-to: Zack Weinberg <zack at codesourcery dot com>
The following reply was made to PR preprocessor/7029; it has been noted by GNATS.
From: Zack Weinberg <zack@codesourcery.com>
To: Neil Booth <neil@daikokuya.co.uk>
Cc: wolfgang.bangerth@iwr.uni-heidelberg.de, gcc-gnats@gcc.gnu.org,
gcc-bugs@gcc.gnu.org
Subject: Re: preprocessor/7029: preprocessor should ignore #warning with -M
Date: Mon, 1 Jul 2002 14:33:20 -0700
On Mon, Jul 01, 2002 at 10:20:29PM +0100, Neil Booth wrote:
> Zack Weinberg wrote:-
>
> > > Warnings are sent to stderr and the dpendency information isn't; so if
> > > you don't want the warnings you are free to pipe stderr to /dev/null.
> > > If you still wanted to retain errors but not warnings you can use -w,
> > > or check the compiler return code.
> > >
> > > So I disagree that there is any reason to change the existing behaviour,
> > > and want to close this PR. Do you agree, Zack?
> >
> > Well, I think it might be reasonable for -M switches that inhibit
> > compilation to imply -w. Presumably the user will get all the
> > warnings in due course as part of the real compilation.
>
> Fair enough; I'll create a patch.
Thanks.
zw