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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Native Com Error  After Merge
Date: Wed, 28 Apr 2021 19:42:58 +0300
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To: "T.V Raman" <raman@google.com>
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> From: "T.V Raman" <raman@google.com>
> Date: Wed, 28 Apr 2021 09:39:28 -0700
> Cc: raman@google.com,
>     emacs-devel@gnu.org
> 
> I hadn't done anything yet, those messages were raised as emacs was
> starting up -- admittedly my .emacs loads a lot of things. Best I can
> tell, as the .emacs loads and pulls in varius elisp libraries, they
> start getting native compiled and that appears to throw the raise condition.

It's not a race condition.

The error message indicates that your Emacs session had more than one
Lisp thread.  Any idea where the additional threads came from?
Knowing that could allow us to come up with a simple reproducer, which
could facilitate fixing the problem.