bug#31138: Native json slower than json.el

[Eli Zaretskii]

> From: yyoncho <yyoncho@gmail.com>
> Date: Sat, 23 Mar 2019 22:23:49 +0200
> Cc: Sébastien Chapuis <sebastien@chapu.is>, 
>       31138@debbugs.gnu.org
> 
> Here it is the offending callstack. 
> 
> https://gist.github.com/yyoncho/7032464b456f60270100c747f42885f8

OK, thanks.  I think I see the reason.

Does it work for you to bind run-hooks to nil around calls to
json-parse-string?