Newsgroups:	comp.os.msdos.djgpp
From:	Peter Berdeklis <peter AT atmosp DOT physics DOT utoronto DOT ca>
Subject:	Re: [Q]: unsigned char
Message-ID:	<Pine.SGI.3.91.971026142228.14237C-100000@atmosp.physics.utoronto.ca>
NNTP-Posting-Host:	chinook.physics.utoronto.ca
Sender:	news AT info DOT physics DOT utoronto DOT ca (System Administrator)
Mime-Version:	1.0
Organization:	University of Toronto - Dept. of Physics
In-Reply-To:	<ABVqtJqOH3@rsuzi.pgu.karelia.ru>
Date:	Sun, 26 Oct 1997 19:24:34 GMT
References:	<ABVqtJqOH3 AT rsuzi DOT pgu DOT karelia DOT ru>
Lines:	31
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

On Thu, 23 Oct 1997, Roman Suzi wrote:
> I have encountered a problem with porting a program
> from BC++ 3.1 to gnu c++ (from DJGPP 2.01 package).
> 
> The problem is best seen in this example of code:
> --------------------------------------------------
>   unsigned char a;
> 
>   a = 253;
> 
>   if (a=='\xFD') {
>    ...
>   };
> --------------------------------------------------
> 
>   Compiler gives warning, that
> "comparison is always 0 due to limited range of data type"
> (no matter with or without '-funsigned-char' flag)


This appears to be a bug in DJGPP.  Compiled under gcc/SGI there is no 
complaint.

To compile it under DJGPP, this will work:

 if( a == (unsigned char) '\xfd' ) { ...

---------------
Peter Berdeklis
Dept. of Physics, Univ. of Toronto

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