Xref:	news2.mv.net comp.os.msdos.djgpp:7426
From:	Sengan Short <Sengan DOT Short AT durham DOT ac DOT uk>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: __attribute__ probs
Date:	3 Aug 1996 19:09:47 GMT
Organization:	University of Durham, Durham, UK.
Lines:	29
Message-ID:	<4u085r$4np@mercury.dur.ac.uk>
References:	<6DuayK2cWSB AT xyz DOT prima DOT ruhr DOT de>
NNTP-Posting-Host:	whitby.dur.ac.uk
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

: I want to get rid off the 'unused variable XXX' warning messages,  
: especially in the following case:

: void Test(int a)
: {
: };

: int a is unused, of course, therefor I get a warning message. To overcome  
: this warning message I tried to use the __attribute__((unused)) in the  
: following way:

: #define UNUSED __attribute__((unused))

: void Test(int a UNUSED)
: {
: };

Try using the UNUSED in the prototype but NOT the definition:

void Test(int a UNUSED);

void Test(int a)
{
};

This works for other attributes, which have the nice property of crashing
gcc if you put them in the defintion.

Sengan

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