bug#37786: 26.3; Emacs crashes when calling function to decode string

[Lars Ingebrigtsen]

Allen Li <darkfeline@felesatra.moe> writes:

> The following expression, when evaluated in emacs -Q, causes emacs to
> crash and dump core:
>
> (mail-decode-encoded-word-string 
> #("=?UTF-8?B?4pyoUERYQ09OIFNBTEXinKggRW5qb3kgU3BlY2lhbCBPZmZlcnMg?= 
> =?UTF-8?B?V2hpbGUgWW91IFdhaXQh?=" 0 64 (ws-butler-chg chg) 64 65 
> (ws-butler-chg chg) 65 97 (ws-butler-chg chg)))

I'm unable to reproduce this in Emacs 27 or Emacs 26.3.

Could you do this under gdb and post the backtrace?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no