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Re: preprocessor/7029: preprocessor should ignore #warning with -M
- From: Neil Booth <neil at daikokuya dot co dot uk>
- To: Zack Weinberg <zack at codesourcery dot com>
- Cc: wolfgang dot bangerth at iwr dot uni-heidelberg dot de, gcc-gnats at gcc dot gnu dot org,gcc-bugs at gcc dot gnu dot org
- Date: Mon, 1 Jul 2002 22:20:29 +0100
- Subject: Re: preprocessor/7029: preprocessor should ignore #warning with -M
- References: <20020614112002.30933.qmail@sources.redhat.com> <20020701210449.GA25719@daikokuya.co.uk> <20020701212038.GD666@codesourcery.com>
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.
Neil.