Re: Freezing frame with igc

[Pip Cet via "Emacs development discussions." <emacs-devel@gnu.org>]

Gerd Möllmann <gerd.moellmann@gmail.com> writes:

> That reminds of something. Maybe what you've seen is completely
> unrelated, it's impossible to tell, but please find below a comment that
> I added to do_switch_frame in frame.c.

Thanks!  I hope I'll be able to reproduce the issue again.

>      These switch-frame events form an endless loop in
>      command_loop_1.  It runs post-command-hook, which generates
>      switch-frame events, which command_loop_1 finds (bound to '#ignore)
>      and executes, which again runs post-command-hook etc., ad
>      infinitum.

The strange thing is there is not apparently an infinite loop: Emacs
doesn't use 100% CPU, it seems to be calling *select() as usual.
Definitely something to check for, though!

Pip