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 Date: Fri, 28 Feb 2003 17:04:26 -0500 From: Christopher Faylor To: cygwin@cygwin.com, binutils@sources.redhat.com Subject: Re: Bug in dumper Message-ID: <20030228220426.GE14769@redhat.com> Reply-To: cygwin@cygwin.com Mail-Followup-To: cygwin@cygwin.com, binutils@sources.redhat.com References: <3E5F0B61.1040003@corpit.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3E5F0B61.1040003@corpit.ru> User-Agent: Mutt/1.5.1i On Fri, Feb 28, 2003 at 10:10:25AM +0300, Egor Duda wrote: >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. Unless someone beats me to this, I'll take a look at this tonight EST. cgf -- 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/