bug#29726: 25.1; SIGSEGV in find-file

[Eli Zaretskii]

> From: Marc Munro <marc@bloodnok.com>
> Cc: 29726@debbugs.gnu.org
> Date: Sat, 16 Dec 2017 11:43:08 -0800
> 
> > doesn't pop up a completions frame, but instead shows this in the
> > mininbufer:
> > 
> >   DISPLAY BUFFER ACTOR *Backtrace* nil
> 
> Yep.  That's a debug message from my code.
> [...]
> $ cd ~/emacs-crash
> $ emacs -Q -l .emacs
> C-x C-f k/k-<TAB> (completion frame appears)
> [navigate back to minibuffer]
> s<TAB>e<TAB> (kaboom!) (there will still be messages in the echo area)

I still don't get the completion frame, only the above-mentioned debug
message.

Can you point me to the part of your code which causes the completions
to appear in a separate frame?