bug#24201: 25.1.50; TLS connections sometimes hang

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: 24201@debbugs.gnu.org,  eggert@cs.ucla.edu
> Date: Thu, 27 Jun 2019 12:34:28 +0200
> 
> > Once we identify the Lisp code which loops, we need to try to figure
> > out why it loops.
> 
> I'm pretty sure it's this:
> 
>       (while (and (memq (process-status stream) '(open run))
>                   (not (re-search-forward end-of-command nil t)))
>         (accept-process-output stream 0.05)
>         (goto-char start))

Any idea why this loops?  Does the other end not respond or something?

> But I do not understand why C-g doesn't work: I've tried to follow the
> call chain, and I can see no instances of binding `inhibit-quit'...

Is inhibit-quit in fact nil or not inside this loop?

> If C-g worked, it'd be easier to debug...

If you are running this under GDB, you can interrupt by "GDB ways",
they are described in etc/DEBUG.