bug#18162: 24.3.92; segfault on null face pointer in face_for_char

[Eli Zaretskii]

> From: Ken Raeburn <raeburn@permabit.com>
> Date: Sat, 2 Aug 2014 06:00:34 -0400
> Cc: 18162@debbugs.gnu.org
> 
>   emacs -Q
>   M-x list-faces-display RET
> Type into the scratch buffer:
>   (progn (clear-face-cache t) (internal-char-font nil 8230))
> Hit C-j to evaluate. This generally works the first time. Move the cursor 
> back up to the end of the expression and hit C-j again. The second time 
> usually crashes for me.

It didn't crash for me.  But then you have a patched Emacs; do you see
the crashes with those patches reverted?

In any case, please tell the details of the crash, as I don't see it
here.