bug#16504: 24.3.50; emacs_backtrace.txt

[Eli Zaretskii]

> From: Juanma Barranquero <lekktu@gmail.com>
> Date: Mon, 20 Jan 2014 13:05:46 +0100
> Cc: 16504@debbugs.gnu.org
> 
> FWIW, with that same binary I don't get a crash

Neither do I with today's trunk.  I guess this has something to do
with which fonts are installed on the system.

> though there's obviously a bug in that an invalid font shouldn't be
> accepted (see attached image).

I think the font is valid (it does succeed to display the buffer),
it's just that it doesn't have a bold variant, which is needed to
display the buffer name on the mode line.