From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gdb-return-23567-listarch-gdb=sources.redhat.com@sourceware.org>
Received: (qmail 31446 invoked by alias); 30 Nov 2005 10:03:03 -0000
Received: (qmail 31437 invoked by uid 22791); 30 Nov 2005 10:03:02 -0000
X-Spam-Check-By: sourceware.org
Received: from zproxy.gmail.com (HELO zproxy.gmail.com) (64.233.162.206)     by sourceware.org (qpsmtpd/0.31) with ESMTP; Wed, 30 Nov 2005 10:03:01 +0000
Received: by zproxy.gmail.com with SMTP id x3so30827nzd         for <gdb@sourceware.org>; Wed, 30 Nov 2005 02:02:59 -0800 (PST)
Received: by 10.36.222.12 with SMTP id u12mr2226nzg;         Wed, 30 Nov 2005 02:02:59 -0800 (PST)
Received: by 10.37.2.35 with HTTP; Wed, 30 Nov 2005 02:02:59 -0800 (PST)
Message-ID: <8f2776cb0511300202t5b8d6d4brda7dbf0f7b58de80@mail.gmail.com>
Date: Wed, 30 Nov 2005 10:40:00 -0000
From: Jim Blandy <jimb@red-bean.com>
To: Daniel Juan <daniel.juan@gmail.com>
Subject: Re: posix semaphores not working under gdb
Cc: gdb@sourceware.org
In-Reply-To: <f69bc2d80511300142p2568daa2yec581e1f191be2cc@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Content-Disposition: inline
References: <f69bc2d80511300142p2568daa2yec581e1f191be2cc@mail.gmail.com>
X-IsSubscribed: yes
Mailing-List: contact gdb-help@sourceware.org; run by ezmlm
Precedence: bulk
List-Subscribe: <mailto:gdb-subscribe@sourceware.org>
List-Archive: <http://sourceware.org/ml/gdb/>
List-Post: <mailto:gdb@sourceware.org>
List-Help: <mailto:gdb-help@sourceware.org>, <http://sourceware.org/ml/#faqs>
Sender: gdb-owner@sourceware.org
X-SW-Source: 2005-11/txt/msg00637.txt.bz2

I'd be surprised if GDB were really disturbing the behavior of the
semaphores.  It's much more likely that GDB is disturbing the
real-time behavior of your program and showing up a bug in the locking
that your program, just by luck, never encounters when it's not being
debugged.

I don't know of any stories offhand of GDB breaking semaphores or mutexes.