bug#24614: 25.1.50; Exception after moving mouse over over a different window

[Eli Zaretskii]

> From: Alain Schneble <a.s@realize.ch>
> Date: Tue, 4 Oct 2016 16:53:14 +0200
> 
> I was working in an emacs-lisp-mode buffer displayed in a window of a
> frame divided into 4 windows.  After moving the mouse over another
> window showing an org-mode buffer, Emacs crashed.

Looks like some stack issue, or maybe an exception in a non-main
thread:

> #7  0x00007ff85a6f9afd in ntdll!.chkstk () from C:\WINDOWS\SYSTEM32\ntdll.dll
> No symbol table info available.
> #8  0x00007ff85a684fe9 in ntdll!RtlImageNtHeaderEx () from 
> C:\WINDOWS\SYSTEM32\ntdll.dll
> No symbol table info available.
> #9  0x00007ff85a6f8c0a in ntdll!KiUserExceptionDispatcher () from 
> C:\WINDOWS\SYSTEM32\ntdll.dll
> No symbol table info available.
> #10 0x00000004000469f9 in get_window_cursor_type (active_cursor=<synthetic 
> pointer>, width=0xbfd6ac, glyph=0x10c46fd0, w=0x12af8400) at xdisp.c:28096
>         cursor_type = 6
>         alt_cursor = <optimized out>
>         non_selected = false

See that chkstk above?

Also, how can cursor_type be 6?  The enumeration has only 6 values, 2
of them negative.

Other than that, I cannot glean anything useful from this backtrace,
especially since this is an optimized build.

Is this GDB session still alive?