Date:	Thu, 25 Mar 1999 10:02:05 +0100 (MET)
From:	Wojciech Piechowski <voyt AT ds2 DOT pg DOT gda DOT pl>
To:	djgpp AT delorie DOT com
Subject:	Re: Preprocessor hates sizeof
In-Reply-To:	<003a01be7635$9d68fc00$b15d44ce@computer>
Message-ID:	<Pine.GSO.3.96.990325095712.28097B-100000@delta.ds2.pg.gda.pl>
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Reply-To:	djgpp AT delorie DOT com
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On Wed, 24 Mar 1999, Sean Middleditch wrote:

> What exactly is the purpose of this?  It looks to me like you're trying to
> check if the compile is 32-bit (and thus a 32-bit long int would be the same
> as the standard 32-bit int).  Instead, you should check for the definition
> of __DJGPP__, if that's what you're aiming to do.
> >
> >I wonder why the following line does not compile and how to make it work:
> >
> >#if sizeof(long int)==sizeof(int)

I need something like that in a portable program to check if the structure
is not larger than a single allocation unit. The exact code is this:

#if (sizeof(Box) > BOXGRAIN)
#error Size of Box header cannot exceed size of grain.
#endif

Now I know that GCC does and will not support this, so how can I replace
it?

--------------------\  Wojciech  Piechowski  /----------------------------
Student informatyki  \  voyt AT ds2 DOT pg DOT gda DOT pl  /  Student of computer science
Politechnika Gdanska  \____________________/   Gdansk Technical University

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