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Date: Thu, 6 Dec 2007 13:55:54 +0100
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: 1.5.24-2: unalbe to get a core Dump file
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On Dec  6 07:22, Christopher Faylor wrote:
> On Thu, Dec 06, 2007 at 12:44:38PM +0100, Corinna Vinschen wrote:
> >On Dec  6 12:01, Corinna Vinschen wrote:
> >> On Dec  5 23:13, Pedro Alves wrote:
> >> > Brian Dessent wrote:
> >> >
> >> >> As already mentioned downthread, if you want a core dump you should
> >> >> simply set error_start=c:/cygwin/bin/dumper.exe, modulo dumper bugs
> >> >> (which should have all been fixed in the latest version.)
> >> >
> >> > The cvs version still doesn't work for me if I link
> >> > it with the distributed bfd -- it crashes in that case.
> >> > The latest fixes were done with a bfd from cvs.
> >> >
> >> > I haven't tried the latest test version, but
> >> > should have the same problem.
> >> 
> >> Do you imply that we need a new binutils package to get dumper working?
> >
> >I just built dumper with a bfd from CVS HEAD(*).  It seems to work on
> >the first glance.  Setting error_start as above, it catches the division
> >by zero from the OP's test app and creates a core file.  However, this
> >core file doesn't seem to be very helpful, at least when using GDB from
> >the distro:
> >
> >(gdb) i thr
> >  3 process 1984  0x7c95077b in ntdll!KiIntSystemCall ()
> >   from /mnt/c/WINDOWS/system32/ntdll.dll
> >  2 process 3020  0x7c90eb94 in ntdll!LdrAccessResource ()
> >   from /mnt/c/WINDOWS/system32/ntdll.dll
> >* 1 process 3836  0x7c90eb94 in ntdll!LdrAccessResource ()
> >   from /mnt/c/WINDOWS/system32/ntdll.dll
> >
> >None of the backtraces shows anything beyond the system DLLs.
> >
> >Do we also need a newer GDB for this to be useful?
> 
> I'm not aware of any advances in frame handling in the CVS version of gdb
> but I'm waiting for the recent spate of win32 activity to die down before
> I release a new version of gdb.

That makes sense.  A new binutils package might be helpful, though.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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