From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 6418 invoked by alias); 21 Jan 2009 00:10:29 -0000 Received: (qmail 6409 invoked by uid 22791); 21 Jan 2009 00:10:28 -0000 X-SWARE-Spam-Status: No, hits=-1.7 required=5.0 tests=AWL,BAYES_00,SARE_MSGID_LONG40,SPF_PASS X-Spam-Check-By: sourceware.org Received: from ti-out-0910.google.com (HELO ti-out-0910.google.com) (209.85.142.188) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Wed, 21 Jan 2009 00:10:22 +0000 Received: by ti-out-0910.google.com with SMTP id d10so2724660tib.12 for ; Tue, 20 Jan 2009 16:10:19 -0800 (PST) MIME-Version: 1.0 Received: by 10.110.11.7 with SMTP id 7mr7273509tik.20.1232496619540; Tue, 20 Jan 2009 16:10:19 -0800 (PST) In-Reply-To: <8ac60eac0901201445m4d85d30k5b5fc87783208a32@mail.gmail.com> References: <4974EBFF.307@aimvalley.nl> <49757D1C.7010309@aimvalley.nl> <8ac60eac0901201037t71b6bd62j8668bd004e933f53@mail.gmail.com> <49763169.8070208@aimvalley.nl> <8ac60eac0901201236i2d3a266akaa673cd12a4ec7cb@mail.gmail.com> <49763F67.5010009@aimvalley.nl> <8ac60eac0901201445m4d85d30k5b5fc87783208a32@mail.gmail.com> Date: Wed, 21 Jan 2009 00:10:00 -0000 Message-ID: Subject: Re: gdb doesn't show all threads, but gdbserver does From: teawater To: Paul Pluzhnikov Cc: Andreas Schwab , "N. van Bolhuis" , gdb@sourceware.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2009-01/txt/msg00126.txt.bz2 Agree. Most of multi-thread bug that I meet are stripped libpthread. On Wed, Jan 21, 2009 at 06:45, Paul Pluzhnikov wrote: > On Tue, Jan 20, 2009 at 2:24 PM, Andreas Schwab wrote: > >> It's actually libthread_db that needs a non-global symbol from >> libpthread. > > IOW, it's a glibc feature :) > > Stripping libpthread appears to be a very common mistake: > > - we've seen it twice on this list in the last two weeks, > - I made it myself 4 weeks ago, even though I *knew* that libpthread > must not be stripped. > > I wonder if we should warn glibc users? Something like: > > Warning: your /lib64/libpthread.so.0 has been stripped. > GDB will not see other threads, and multithreaded debugging will > be unreliable. > See http://sourceware.org/gdb/wiki/... for further info. > > -- > Paul Pluzhnikov >