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

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Caleb Ristvedt <caleb.ristvedt <at> cune.org>
Subject: bug#36915: closed (Re: bug#36915: make-thread-local-fluid ignores
 the default value)
Date: Sun, 12 Jan 2020 21:28:02 +0000

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Your bug report

#36915: make-thread-local-fluid ignores the default value

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 36915 <at> debbugs.gnu.org.

-- 
36915: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=36915
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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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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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

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