Subject: bug#31214: hang in Faccept_process_output

From: Eli Zaretskii <[email-masked]>
Date: Fri, 20 Apr 2018 09:30:35 +0300

> From: Glenn Morris <[email-masked]>
> Cc: [email-masked]
> Date: Thu, 19 Apr 2018 15:53:52 -0400
> 
> In fact, doesn't this imply that any use of the form
> (accept-process-output process) may hang Emacs forever, which seems bad?

Under very rare conditions, yes.  That's what that commit on master
was about, and we have some evidence that it didn't solve all of the
problem, just a big chunk of it.