bug#17753: Cygwin emacs-X11 core dump

[Eli Zaretskii]

> Date: Wed, 17 Sep 2014 13:16:43 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> Cc: 17753@debbugs.gnu.org
> 
> Anyway, one thing that strikes me (and is consistent across all your
> reports until now) is that atimer.c functions are run from a separate
> thread, not the main thread (which is Thread 1).  Ken, is this normal
> in the Cygwin-w32 build?

Actually, this is not a Cygwin-w32 build, this is a Cygwin-X11 build,
isn't it?  In which case I think the fact that atimers run from a
different thread is even more strange.