bug#27446: 25.1; Crashing on rendering of Font

[Eli Zaretskii <eliz@gnu.org>]

> From: Mike Dupont <jamesmikedupont@googlemail.com>
> Date: Thu, 22 Jun 2017 07:38:07 -0400
> 
> Emacs crashes when viewing the tsv results of this query in wikidata,
> it looks like a font issue.
> 
> https://query.wikidata.org/#%23moderism%0ASELECT%20%20%3Fc%20%3Fp4%20%3Fd%20%0AWHERE%0A%7B%0A%20%20%3Fc%20%3Fp4%20%3Fd%20.%0A%20%20%3Fa%20%3Fp3%20%3Fc%20.%0A%20%20%09%3Fa%20%3Fp%20%3Fitem%20.%0A%09%3Fitem%20ps%3AP135%20wd%3AQ878985%20.%0A%09%0A%7D
> 
> #moderism
> SELECT  ?c ?p4 ?d
> WHERE
> {
>   ?c ?p4 ?d .
>   ?a ?p3 ?c .
>   ?a ?p ?item .
> ?item ps:P135 wd:Q878985 .
> }
> 
> Export results in tsv and open in emacs.

Does it crash as soon as you visit the file, or do you need to scroll
to a particular point in the file before Emacs crashes?

> I will attach the core files and data files to the ticket for
> completeness.

Thanks.  It looks like the crash is inside the libotf library which
Emacs uses for complex script shaping.  I'd suggest to begin by making
sure you have the latest version of that library and of its peer
m17n_flt library.