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Date:      Mon, 27 Aug 2001 15:48:07 -0400
From:      Garance A Drosihn <drosih@rpi.edu>
To:        Alfred Perlstein <bright@mu.org>, Charles Randall <crandall@matchlogic.com>
Cc:        <freebsd-hackers@FreeBSD.ORG>
Subject:   Re: Portability of #warning in /usr/include
Message-ID:  <p05101003b7b0537e8277@[128.113.24.47]>
In-Reply-To: <20010827134752.G81307@elvis.mu.org>
References:   <5FE9B713CCCDD311A03400508B8B30130828F33F@bdr-xcln.corp.matchlogic.com> <20010827134752.G81307@elvis.mu.org>

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At 1:47 PM -0500 8/27/01, Alfred Perlstein wrote:
>* Charles Randall <crandall@matchlogic.com> [010827 12:44] wrote:
>>  I've noted that several include files in /usr/include use the C preprocessor
>>  #warning directive. This isn't standard C and prevents some software from
>>  compiling using a compiler like TenDRA. What's the current opinion on this?
>
>My opinion is that #warning should be standardized, however since it's
>not, diffs to surround them with #ifdef __GNU_C__ (or whatever it is)
>will probably be committed.

This may not work.

I know I had some problem with #warn and #warning with some code I was
working on, where some C compilers would only recognize one and other C
compilers would only recognize the other.  Some of those compilers
would NOT let you '#ifdef' out the version that it did not recognize
(perhaps thinking that '#warn' or '#warning' might be some gross typo
for '#else' or '#endif', I guess...).

-- 
Garance Alistair Drosehn            =   gad@eclipse.acs.rpi.edu
Senior Systems Programmer           or  gad@freebsd.org
Rensselaer Polytechnic Institute    or  drosih@rpi.edu

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