From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 5022 invoked by alias); 11 Aug 2012 06:24:30 -0000 Received: (qmail 5009 invoked by uid 22791); 11 Aug 2012 06:24:26 -0000 X-SWARE-Spam-Status: No, hits=-6.3 required=5.0 tests=AWL,BAYES_00,KHOP_RCVD_UNTRUST,RCVD_IN_DNSWL_HI,RCVD_IN_HOSTKARMA_W,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Sat, 11 Aug 2012 06:24:12 +0000 Received: from int-mx11.intmail.prod.int.phx2.redhat.com (int-mx11.intmail.prod.int.phx2.redhat.com [10.5.11.24]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q7B6OB54006473 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Sat, 11 Aug 2012 02:24:11 -0400 Received: from host2.jankratochvil.net (ovpn-116-46.ams2.redhat.com [10.36.116.46]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q7B6O7rG013883 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Sat, 11 Aug 2012 02:24:10 -0400 Date: Sat, 11 Aug 2012 06:24:00 -0000 From: Jan Kratochvil To: rivers horse Cc: gdb@sourceware.org Subject: Re: execution does not run in the source line's order Message-ID: <20120811062407.GA18660@host2.jankratochvil.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-2022-jp Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) 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: 2012-08/txt/msg00034.txt.bz2 On Sat, 11 Aug 2012 05:14:41 +0200, rivers horse wrote: > I debug gdb using itself, i find a strange issue : > the programme being debugged execute not in line > order,for example, it goes into line 20,then it goes into line 18 , > which are simply assignment operations, > > what is the reasin for this? You have probably compiled the file with -O2, use/force -O0 (gcc options). Regards, Jan