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Date: Thu, 17 Jan 2008 09:47:00 -0000
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From: Mark Kettenis <mark.kettenis@xs4all.nl>
To: msnyder@specifix.com
CC: eliz@gnu.org, jimb@codesourcery.com, uweigand@de.ibm.com,         brobecker@adacore.com, gdb-patches@sourceware.org
In-reply-to: <1200543483.3263.73.camel@localhost.localdomain> (message from 	Michael Snyder on Wed, 16 Jan 2008 20:18:03 -0800)
Subject: Re: [RFC/RFA?] Should break FILE:LINENO skip prologue?
References: <200801152140.m0FLeMha003566@d12av02.megacenter.de.ibm.com> 	 <ur6gipfjm.fsf@gnu.org> 	 <200801161034.m0GAYfpk000326@brahms.sibelius.xs4all.nl> 	 <ulk6pppje.fsf@gnu.org> <m3ir1t78s4.fsf@codesourcery.com> 	 <uejchozs8.fsf@gnu.org> <1200543483.3263.73.camel@localhost.localdomain>
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> From: Michael Snyder <msnyder@specifix.com>
> Date: Wed, 16 Jan 2008 20:18:03 -0800
> 
> On Thu, 2008-01-17 at 06:13 +0200, Eli Zaretskii wrote:
> > > Cc: Mark Kettenis <mark.kettenis@xs4all.nl>,  uweigand@de.ibm.com,
> > > 	  brobecker@adacore.com,  msnyder@specifix.com,
> > > 	  gdb-patches@sourceware.org
> > > From: Jim Blandy <jimb@codesourcery.com>
> > > Date: Wed, 16 Jan 2008 13:36:11 -0800
> > > 
> > > GDB allows 'FILENAME'::FUNCTION in C expressions:
> > 
> > Thanks.
> > 
> > But if "break *'FILENAME'::FUNCTION" works, why is it wrong to expect
> > that "break *FILENAME:FUNCTION" should also work.  None of them is a
> > valid C expression, it's just something GDB does to help the user,
> > right?
> 
> Right.  It is a separate parser, the LINEINFO parser, as 
> opposed to the expression parser.  It defines a superset
> of the expression syntax.  It is used mainly by the 'break'
> and 'list' commands.

That isn't quite true.  The LINESPEC (I assume that's what you meant
with LINEINFO) parser only parses the '*' and then hands things off to
the standard expression parser.

This of course is a good thing, because it means expressions are
handled uniformly all over GDB.