To: djgpp AT delorie DOT com
Subject: Re: Why two identical typedef are considered an error in DJGPP?
Message-ID: <19970114.151132.2183.2.chambersb@juno.com>
References: <01IE7MKQWZ2Q003361 AT cc DOT uab DOT es>
From: chambersb AT juno DOT com (Benjamin D Chambers)
Date: Tue, 14 Jan 1997 18:11:58 EST


On Tue, 14 Jan 1997 17:41:10 +0000 "x DOT pons AT cc DOT uab DOT es" <ILGES AT cc DOT uab DOT es>
writes:
>Dear programmers,
>
>If I write something like this in a xxx.h file
>
>  typedef unsigned char BYTE;
>
>and I have *THE SAME* typedef in some other yyy.h file,
>both included in the same .c file, the DJGPP compiler complains
>that:
>
>  file xxx.h line n  redefinition of `BYTE'
>  file yyy.h line m  `BYTE' previously declared here
>
>Is there some way to avoid this error, which is not even a warning
>in other compilers (provided, of course, that both definitions are
>identical)?
Sure.  Use:
#ifndef BYTE
typedef unsigned char BYTE;
#endif

>
>Thanks in advance,
>
No problem.

>XP
>

...Chambers