From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Buck <jbuck@synopsys.COM>
To: doko@cs.tu-berlin.de (Matthias Klose)
Cc: gcc@gcc.gnu.org, 45440@bugs.debian.org, rjk@sfere.greenend.org.uk
Subject: Re: __attribute__((unused)) is ignored in C++
Date: Tue, 30 Nov 1999 23:37:00 -0000
Message-ID: <199911051655.IAA29834@atrus.synopsys.com>
References: <14370.57368.548466.981327@bolero>
X-SW-Source: 1999-11n/msg00136.html
Message-ID: <19991130233700.7noFdyLBU7adQ3cQpNOnpJTxOr7aZlPYFPXfawT83o8@z>

> [This bug was reported to the Debian bug tracking system. Please CC
>  to 45440@bugs.debian.org.]
> 
> Tested with gcc-2.95.2
> 
> egcs ignores the __attribute__ syntax to mark a function parameter
> unused, and then complains when it is not used.  This only happens
> when compiling C++, not C.

While this should be fixed, it tends to get low priority because there
is a standard, portable way in C++ to indicate that a variable is not
used:

int foo2(int)
{
	return 1;
}

If you want to give the argument a name for documentation purposes,
the style I use is

int foo2(int /* x */)
{
	return 1;
}