Re: 64-bit emacs crashes a lot

[Ryan Johnson]

On 16/08/2013 4:58 AM, Eli Zaretskii wrote:
> Again, please move this discussion to emacs-devel.
Back pointer: http://cygwin.com/ml/cygwin/2013-08/msg00273.html

> > Date: Thu, 15 Aug 2013 22:35:54 -0400
> > From: Ken Brown <address@hidden>
> >
> > 1. Invoke 'emacs-nox -Q' in mintty.
> >
> > 2. M-x compile C-a C-k ls RET
> >
> > 3. C-x o
> >
> > 4. Hit 'g' repeatedly.
> >
> > I got it to abort with Fatal error 6 after slightly over 100 repetitions.
> >
> > I then tried the same thing with emacs-X11 (running under X, not in
> > mintty).  I hit 'g' 200 times without a problem.  I repeated this with
> > emacs-w32, again 200 times without a problem.
> >
> > So there's a bug somewhere.  But if it's an emacs bug, it's strange that
> > it only occurs with emacs-nox and not with either of the GUI versions of
> > emacs.
> I suspect that buffer relocation might be the reason.  Can you show a
> backtrace from the fatal error in an unoptimized build, with the above
> recipe?
I'll try to get one. Meanwhile, is there a quick way to disable buffer 
relocation as a sanity test? Some configure option, perhaps? If the 
optimized build still crashes reliably without it, the real problem is 
probably something else.

Ryan