bug#13540: 24.3.50; Regression in trunk: auto-revert-mode fails on files accessed via samba

[Eli Zaretskii <eliz@gnu.org>]

> Date: Fri, 25 Jan 2013 09:29:12 +0100
> From: Dani Moncayo <dmoncayo@gmail.com>
> Cc: michael.albinus@gmx.de, 13540@debbugs.gnu.org
> 
> > Actually, there's one more thing I'd ask you to check.  Can you put a
> > breakpoint inside the watch_completion function, say on this line:
> >
> >   if (!io_info) <<<<<<<<<<<<<<<<<<<<<
> >     return;
> >
> > and see if it ever breaks when you modify files in the directory that
> > is being watched?
> 
> Can I do that with a binary distribution of Emacs (if so, how?), or do
> I need a full distribution with sourcecode?

Line number information is recorded in the binary as well.  So:

 > gdb emacs.exe
 (gdb) break w32notify.c:206
 (gdb) r

should set you up.  If the breakpoint breaks, GDB will complain that
sources are not available, so it cannot display the source.  But it
doesn't matter, since all I'm interested in is whether it breaks and
if so, what do we get in io_info->hEvent object.