From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 10509 invoked by alias); 5 Jul 2011 06:39:14 -0000 Received: (qmail 10425 invoked by uid 22791); 5 Jul 2011 06:39:12 -0000 X-SWARE-Spam-Status: No, hits=0.2 required=5.0 tests=AWL,BAYES_40,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from nm10-vm3.bullet.mail.ne1.yahoo.com (HELO nm10-vm3.bullet.mail.ne1.yahoo.com) (98.138.91.140) by sourceware.org (qpsmtpd/0.43rc1) with SMTP; Tue, 05 Jul 2011 06:38:57 +0000 Received: from [98.138.90.49] by nm10.bullet.mail.ne1.yahoo.com with NNFMP; 05 Jul 2011 06:38:56 -0000 Received: from [98.138.87.8] by tm2.bullet.mail.ne1.yahoo.com with NNFMP; 05 Jul 2011 06:38:56 -0000 Received: from [127.0.0.1] by omp1008.mail.ne1.yahoo.com with NNFMP; 05 Jul 2011 06:38:56 -0000 Received: (qmail 61852 invoked by uid 60001); 5 Jul 2011 06:38:56 -0000 Received: from [2.176.234.233] by web111702.mail.gq1.yahoo.com via HTTP; Mon, 04 Jul 2011 23:38:55 PDT Message-ID: <1309847935.50900.YahooMailNeo@web111702.mail.gq1.yahoo.com> Date: Tue, 05 Jul 2011 06:39:00 -0000 From: Mahmood Naderan Reply-To: Mahmood Naderan Subject: GDB doesnot catches segmentation fault To: "gdb@sourceware.org" MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable 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: 2011-07/txt/msg00012.txt.bz2 Hi I have attached a PID to gdb. Although the code crashed with segmentation f= ault, but gdb ignores that and I am not able to view backtrace. The output of my program is ... loading script... Begin simulation Segmentation fault Done :D .... and the gdb output on another terminal contains mahmood@mpc:~$ gdb - 23425 GNU gdb (GDB) 7.1-ubuntu Copyright (C) 2010 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.=A0 Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". For bug reporting instructions, please see: ... -: No such file or directory. Attaching to process 23425 Reading symbols from /home/mahmood/gem5/build/ALPHA_FS/m5.debug...done. Reading symbols from /lib/libpthread.so.0...(no debugging symbols found)...= done. [Thread debugging using libthread_db enabled] Loaded symbols for /lib/libpthread.so.0 Reading symbols from /lib/libdl.so.2...(no debugging symbols found)...done. Loaded symbols for /lib/libdl.so.2 Reading symbols from /lib/libutil.so.1...(no debugging symbols found)...don= e. Loaded symbols for /lib/libutil.so.1 Reading symbols from /usr/lib/libpython2.6.so.1.0...(no debugging symbols f= ound)...done. Loaded symbols for /usr/lib/libpython2.6.so.1.0 Reading symbols from /lib/libz.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/libz.so.1 Reading symbols from /lib/librt.so.1...(no debugging symbols found)...done. Loaded symbols for /lib/librt.so.1 Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols found)= ...done. Loaded symbols for /usr/lib/libstdc++.so.6 Reading symbols from /lib/libm.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libm.so.6 Reading symbols from /lib/libgcc_s.so.1...Reading symbols from /usr/lib/deb= ug/lib/libgcc_s.so.1...done. done. Loaded symbols for /lib/libgcc_s.so.1 Reading symbols from /lib/libc.so.6...(no debugging symbols found)...done. Loaded symbols for /lib/libc.so.6 Reading symbols from /lib64/ld-linux-x86-64.so.2...(no debugging symbols fo= und)...done. Loaded symbols for /lib64/ld-linux-x86-64.so.2 Reading symbols from /lib/libssl.so.0.9.8...(no debugging symbols found)...= done. Loaded symbols for /lib/libssl.so.0.9.8 Reading symbols from /lib/libcrypto.so.0.9.8...(no debugging symbols found)= ...done. Loaded symbols for /lib/libcrypto.so.0.9.8 Reading symbols from /usr/lib/python2.6/lib-dynload/datetime.so...(no debug= ging symbols found)...done. Loaded symbols for /usr/lib/python2.6/lib-dynload/datetime.so 0x0000000000447bfb in Event::initialized (this=3D0x41ec648) at build/ALPHA_= FS/sim/eventq.hh:84 84=A0=A0=A0=A0=A0=A0=A0=A0=A0 initialized() const (gdb) c Continuing. Segmentation fault mahmood@mpc:~$ Any idea bout that? =A0 // Naderan *Mahmood;