bug#18894: 24.4.51; Erratic freezing on Cygwin

[Eli Zaretskii]

> Date: Thu, 30 Oct 2014 17:00:24 +1300
> From: aidalgol@amuri.net
> Cc: Eli Zaretskii <eliz@gnu.org>
> 
> > Does it consume any CPU?
> 
> Not when I last checked, but I did not check last time it occurred, so 
> I will check next time.

Thanks.

> > Can you attach GDB to Emacs when it is in such a state?  If not, can
> > you observe any activity of its threads via Process Explorer?
> 
> I have been always running Emacs under GDB, so yes.

OK, but for this kind of problems, it is best to run Emacs outside
GDB, and when it hangs, attach GDB to it.  In most cases, attaching a
debugger will interrupt whatever Emacs is doing, although in this case
it might not, as you said the DebugBreak program didn't.  But it's
worth trying.