GNU bug report logs - #36915
make-thread-local-fluid ignores the default value

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Caleb Ristvedt <caleb.ristvedt <at> cune.org>
To: bug-guile <at> gnu.org
Subject: make-thread-local-fluid ignores the default value
Date: Sat, 03 Aug 2019 17:46:19 -0500

In Guile 2.2.6 as packaged on Guix System (x86-64), the following
happens:

--------------------------------------
(define some-fluid (make-thread-local-fluid 42))

(display (fluid-ref some-fluid))

=> #f
--------------------------------------

The same problem doesn't happen with non-thread-local fluids. The manual
says pretty clearly "whose initial value is DFLT", so this should be a
bug.

This is especially significant because, if I understand correctly, that
"default" value is the initial value of that fluid in a new thread. So
just using fluid-set! immediately after creating it isn't sufficient to
work around it entirely.

- reepca

Message #10 received at 36915-done <at> debbugs.gnu.org (full text, mbox):

From: Andy Wingo <wingo <at> pobox.com>
To: Caleb Ristvedt <caleb.ristvedt <at> cune.org>
Cc: 36915-done <at> debbugs.gnu.org
Subject: Re: bug#36915: make-thread-local-fluid ignores the default value
Date: Sun, 12 Jan 2020 22:27:39 +0100

On Sun 04 Aug 2019 00:46, Caleb Ristvedt <caleb.ristvedt <at> cune.org> writes:

> In Guile 2.2.6 as packaged on Guix System (x86-64), the following
> happens:
>
> --------------------------------------
> (define some-fluid (make-thread-local-fluid 42))
>
> (display (fluid-ref some-fluid))
>
> => #f
> --------------------------------------

This is fixed in git, thanks to Rob Browning.

Thanks for the report,

Andy

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