X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-1.3 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_NEUTRAL,TW_RX X-Spam-Check-By: sourceware.org Message-ID: <4E7497DA.1090800@cornell.edu> Date: Sat, 17 Sep 2011 08:51:38 -0400 From: Ken Brown User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:5.0) Gecko/20110624 Thunderbird/5.0 MIME-Version: 1.0 To: cygwin AT cygwin DOT com Subject: Re: Problem w/ gdb 7.3.50-2 under emacs References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On 9/13/2011 11:48 PM, Bill Priest wrote: > All, > I updated gdb to 7.3.50-2 and I can no longer run M-x gdb under > emacs inside rxvt (gdb core dumps). Reverting back to 7.3.50-1 and it > works. The executable being debugged is built with gcc 4.5.3 and gdb > under rxvt and ddd works. Running M-x shell (/bin/sh) gdb also works. > Running M-x gdba fails identically to M-x gdb. The odd thing is > that after "Reading symbols ... done" nothing is typed and the > "Debugger segmentation fault (core dumped) occurs w/o typing a key. > > Bill > > t.c > -------------- > #include > > int main(void) > { > printf("Hello World\n"); > return 0; > } > --------------- > > compiled with > gcc -Wall -g -o t t.c > > > Current directory is ~/ > GNU gdb (GDB) 7.3.50.20110821-cvs (cygwin-special) > Copyright (C) 2011 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. Type "show copying" > and "show warranty" for details. > This GDB was configured as "i686-cygwin". > For bug reporting instructions, please see: > ... > Reading symbols from /home/wpriest/t.exe...done. > (gdb) > Debugger segmentation fault (core dumped) I can confirm this. Bug M-x gud-gdb seems to work fine. I realize, however, that it may not give you the graphical interface that you'd like. Notice that when you use M-x gdb, emacs calls gdb with the --annotate=3 option. A google search suggests that this option is obsolete. I don't know if that's part of the problem or not. I can run gdb with that option outside of emacs and it doesn't segfault. Ken -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple