From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21955 invoked by alias); 3 Dec 2003 17:54:01 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 21897 invoked from network); 3 Dec 2003 17:54:00 -0000 Received: from unknown (HELO yosemite.airs.com) (209.128.65.135) by sources.redhat.com with SMTP; 3 Dec 2003 17:54:00 -0000 Received: (qmail 7247 invoked by uid 10); 3 Dec 2003 17:54:00 -0000 Received: (qmail 2668 invoked by uid 500); 3 Dec 2003 17:53:53 -0000 From: Ian Lance Taylor To: Daniel Jacobowitz Cc: Michael Elizabeth Chastain , ac131313@redhat.com, gdb@sources.redhat.com, wcohen@redhat.com Subject: Re: Slow handling of C++ symbol names References: <20031203164734.201124B35B@berman.michael-chastain.com> <20031203170823.GA9475@nevyn.them.org> <20031203173755.GA4506@nevyn.them.org> Date: Wed, 03 Dec 2003 17:54:00 -0000 In-Reply-To: <20031203173755.GA4506@nevyn.them.org> Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-SW-Source: 2003-12/txt/msg00050.txt.bz2 Daniel Jacobowitz writes: > On Wed, Dec 03, 2003 at 12:34:31PM -0500, Ian Lance Taylor wrote: > > Daniel Jacobowitz writes: > > > > > GDB never does set DMGL_VERBOSE. Are you sure the old demangler > > > wouldn't produce that without DMGL_VERBOSE? > > > > > > Maybe the old demangler had a test reversed. ISTR that c++filt passes > > > DMGL_VERBOSE, and that generates std::string rather than > > > std::basic_string for the above. > > > > Well, hmmm. The code looks right to me. When I run my copy of > > c++filt built with the old demangler, I get the long string, as > > expected. > > > > I note that DMGL_VERBOSE was only added on 2002-02-05, so if you're > > using a c++filt from sources before that you will get the smaller > > demangling. > > I'm using one from binutils as of a month or so ago, and I get the > short string. Hmm. I don't know quite what's going on. Me neither. Everything makes sense to me and I get the results I expect. If we want to pursue this further, though it may not matter much, I think you need to debug your c++filt. See if flag_verbose is set. The relevant function is called demangle_substitution(). The first call to the function will call result_add() with either std::string or the longer version. Ian