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Re: /usr/local/bin/emacs: writing to child signal FD: Bad file descripto

From: Eli Zaretskii
Subject: Re: /usr/local/bin/emacs: writing to child signal FD: Bad file descriptor
Date: Sat, 04 Dec 2021 15:28:40 +0200
User-agent: K-9 Mail for Android

On December 4, 2021 2:05:44 PM GMT+02:00, Tomas Hlavaty <> wrote:
> On Sat 04 Dec 2021 at 11:26, Hongyi Zhao <> wrote:
> > I try to compile vterm module with `M-x vterm-module-compile RET`, but
> > Emacs freezes. Then I killed the process by hitting `C-g` twice, at
> > this moment the message reported here occured.
> There is something seriously wrong with C-g.
> It is very dangerous.
> Emacs often crashes for me after trying to break blocking operation
> using C-g twice.
> It just prints a list of threads and crashes.
> This has been happening for a long time;
> I guess since introduction of threads.
> It probably has something to do with disruption of blocking
> network operations or garbage collection.
> Two weeks ago, it even truncated ~/.emacs to 0 size.  This happened once
> so far.
> All with emacs -nw.

What version of Emacs is that, and on what OS?

In general, typing C-g twice invokes "emergency exit", but that is supposed to 
ask you a question before it ends the session.

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