From: ludovic.courtes@laas.fr (Ludovic Courtès)
Cc: guile-devel@gnu.org
Subject: Re: [PATCH] Marking weak alist vectors, #2
Date: Thu, 24 Nov 2005 10:01:10 +0100 [thread overview]
Message-ID: <87wtiy5six.fsf@laas.fr> (raw)
In-Reply-To: <4385108B.9090005@xs4all.nl> (Han-Wen Nienhuys's message of "Thu, 24 Nov 2005 01:59:55 +0100")
Hi,
Han-Wen Nienhuys <hanwen@xs4all.nl> writes:
> No, this is not cyclic. The problem is a situation where key A is
> associated to key A, eg.
>
> (define x (cons 1 2))
> (set-cdr! x s)
> (weak-key-hash-table-set! table s x)
>
> x points back to s, and s is a key in the table.
Ah, alright. Well yes, the new patch does handle it, the previous one
didn't. The issue at hand was similar to the one which showed up in my
"cascading weak keys" example.
$ ../pre-inst-guile --no-debug
guile> (use-modules (ice-9 weak-vector))
guile> (define t (make-weak-key-alist-vector 12))
guile> (define s (string-copy "chbouib"))
guile> (hashq-set! t s (cons s 1))
("chbouib" . 1)
guile> (set! s #f)
guile> (gc)
guile> t
#wh(() () () () () () () () () () () ())
Thanks,
Ludovic.
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next prev parent reply other threads:[~2005-11-24 9:01 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-08 17:22 [PATCH] Marking weak alist vectors Ludovic Courtès
2005-11-08 23:51 ` Marius Vollmer
2005-11-09 9:03 ` Ludovic Courtès
2005-12-06 23:55 ` Marius Vollmer
2005-12-07 10:33 ` Ludovic Courtès
2005-12-13 23:45 ` Marius Vollmer
2005-12-14 9:30 ` Ludovic Courtès
2005-11-09 10:28 ` Han-Wen Nienhuys
2005-11-09 16:28 ` Ludovic Courtès
2005-11-09 18:36 ` Han-Wen Nienhuys
2005-11-09 21:11 ` Kevin Ryde
2005-11-09 22:45 ` Marius Vollmer
2005-11-10 12:11 ` Han-Wen Nienhuys
2005-11-10 9:47 ` [PATCH] Reference leak in `iprin1 ()' Ludovic Courtès
2005-11-12 9:23 ` Neil Jerram
2005-11-14 9:58 ` Ludovic Courtès
2005-11-16 21:18 ` Neil Jerram
2005-11-17 9:54 ` Ludovic Courtès
2005-11-17 18:52 ` Neil Jerram
2005-11-23 10:19 ` [PATCH] Marking weak alist vectors, #2 Ludovic Courtès
2005-11-24 0:59 ` Han-Wen Nienhuys
2005-11-24 9:01 ` Ludovic Courtès [this message]
2005-11-26 0:49 ` Kevin Ryde
2006-01-09 14:51 ` [PATCH] Marking weak alist vectors, epilogue Ludovic Courtès
2006-01-09 19:29 ` Neil Jerram
2006-01-10 8:21 ` Ludovic Courtès
2006-01-10 9:33 ` Neil Jerram
2006-01-10 15:43 ` Ludovic Courtès
2005-11-17 13:21 ` [PATCH] Fixing `gc-live-object-stats' Ludovic Courtès
2005-11-17 14:12 ` Han-Wen Nienhuys
2005-11-30 8:54 ` Ludovic Courtès
2005-11-30 23:45 ` Han-Wen Nienhuys
2005-12-03 19:31 ` Neil Jerram
2005-12-05 8:50 ` Ludovic Courtès
2005-12-06 19:14 ` Neil Jerram
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