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Message-Id: <199903151714.LAA02793@modi.xraylith.wisc.edu>
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To: Bob Aglietti <grut AT hplagl DOT hpl DOT hp DOT com>
cc: jonpryor AT vt DOT edu, cygwin AT sourceware DOT cygnus DOT com
Subject: Re: egcs 1.1.1: odd warning message with template friend functions 
In-reply-to: Your message of "Mon, 15 Mar 1999 08:48:33 PST."
             <199903151648 DOT AA251596512 AT hplagl DOT hpl DOT hp DOT com> 
Date: Mon, 15 Mar 1999 11:14:58 -0600
From: Mumit Khan <khan AT xraylith DOT wisc DOT EDU>

Bob Aglietti <grut AT hplagl DOT hpl DOT hp DOT com> writes:
> 
> I don't know why this message shows up in the current version, but I installe
> d
> the 2.8.1 compiler on one of my unix systems and it's nice enough to mention
> that I might want to use the option: '-fguiding-decls'.  Sure enough, no
> warnings.  This also works with the egcs-2.91.57 compiler I'm using on my pc.
> 
> I still don't understand what changed but this'll at least get around it.
> 

I strongly recommend against using the -fguiding-decl switch. Fixing your
code (and ifdef'ing for non-conformant compilers) is the right way to go. 
This particular option can cause you much grief when you're using iostreams
and other C++ libraries that were not built with this option as well.

Also, comparison to gcc-2.8.1 is usually not a good idea. The C++ front in
FSF GCC is so old and buggy that it's almost unusable for any real code
that makes heavy use of templates, exceptions, etc.

I'm not going to bore the non-C++ users with an explanation of guiding
declarations; the ANSI/ISO standard describes it well, and so do lots of
postings to C++ specific forums (http://www.dejanews.com/ is your friend).

Regards,
Mumit


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