Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Message-ID: <3E5F0B61.1040003@corpit.ru> Date: Fri, 28 Feb 2003 10:10:25 +0300 From: Egor Duda Reply-To: Egor Duda User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.1) Gecko/20020927 Debian/1.1-1 MIME-Version: 1.0 To: Ronald Landheer-Cieslak Cc: "Jon A. Lambert" , cygwin@cygwin.com, binutils@sources.redhat.com Subject: Bug in dumper References: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Ronald Landheer-Cieslak wrote: >>Does dumper.exe work? Well, i should have answered this, but unfortunately, i have no access to windows machine right now to debug, or even verify this. >>Upon execution I see the following in the cygwin console: >> $ ./div.exe >> 7 [main] div 2296 handle_exceptions: Error while dumping state (probably corrupted stack) >> Arithmetic exception (core dumped) >> >>In the cmd.exe console window that dumper.bat starts I see the following: >> C:\cygwin\home\jlambert>dumper.exe -d C:/cygwin/home/jlambert/div.exe 1884 >> dumping process #1884 to div.exe.core >> setting bfd architecture: No error Well, this is a strange line. This last line of dumper's output indicates than call to bfd_set_arch_mach(abfd, bfd_arch_i386, 0) havs returned non-zero status, which should indicate an error (if i understand things correctly), yet bfd_perror called immediately afterwards has printed "No error" message. This means that either i'm wrong about my assumptions about bfd_set_arch_mach() and its return, or there's a bug in binutils. It should be quite easy to debug, though, for those who have a cygwin toolchain installed. Just build dumper with debug info (this will require building bfd alongside), start any innocent process, say, bash, get its pid and then run 'dumper -d c:/cygwin/bin/bash.exe ' under gdb. This should reveal what status is returned by bfd_set_arch_mach, and why. egor. -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/