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Date: Mon, 18 Mar 2002 12:19:00 -0000
From: Stan Shebs <shebs@apple.com>
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To: Neil Booth <neil@daikokuya.demon.co.uk>
CC: Daniel Berlin <dan@dberlin.org>, Jim Blandy <jimb@redhat.com>,
   gdb-patches@sources.redhat.com, gcc@gcc.gnu.org
Subject: Re: RFC: C/C++ preprocessor macro support for GDB
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Neil Booth wrote:
> 
> Hi Stan!
> 
> Stan Shebs wrote:-
> 
> > As someone who has had much of his time consumed by keeping
> > another preprocessor (Apple's cpp-precomp) in sync with GNU cpp,
> > I think we really should try hard to avoid duplicate macro
> > expanders.
> 
> What were the issues?  Subtle differences in macro expansion?  I'm
> curious.

Just about everything you can think of. :-) GNU extensions,
predefined symbols, pathname search orders, token pasting, etc.
GNUisms like vararg macros (now a C99ism too I guess) have
probably accounted for the most work.

Stan