Subject: Re: bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs

From: Eli Zaretskii <[email-masked]>
Date: Thu, 08 Apr 2021 20:46:09 +0300

> From: Michael Welsh Duggan <[email-masked]>
> Cc: Michael Welsh Duggan <[email-masked]>,
>         "[email-masked]"
>  <[email-masked]>,
>         "[email-masked]" <[email-masked]>
> Date: Thu, 08 Apr 2021 13:11:34 -0400
> 
> I hit the breakpoint in quit.  It looks like Fnconc uses FOR_EACH_TAIL,
> which uses FOR_EACH_TAIL_INTENAL, which calls maybe_quit.  The question
> in my mind now is whether block/unblock_input belongs in window_list or
> in Fnconc.

IMO, the right solution is not block_input but unwind_protect.