From: Michael Heerdegen <michael_heerdegen@web.de>
To: Eli Zaretskii <eliz@gnu.org>
Cc: npostavs@gmail.com, 30626@debbugs.gnu.org
Subject: bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'
Date: Wed, 28 Feb 2018 17:20:53 +0100 [thread overview]
Message-ID: <87po4pnl0a.fsf@web.de> (raw)
In-Reply-To: <83h8q1yuin.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 28 Feb 2018 18:00:00 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
> How do you see that the car is immediately thrown away?
After expansion and dispatch, this is what gets executed:
#+begin_src emacs-lisp
(let ((stream (stream-range 1 1000000)))
(while (not (stream-empty-p stream))
(funcall #'ignore (stream-first stream))
(setq stream (stream-rest stream))))
#+end_src
Creating an element and throwing away the outermost cons alternate.
> > AFAIU the problem is that the cons1 still exists in memory until
> > garbage collection kicks in. When that happens, the cons1 points to
> > a largely recursive cons structure, though this structure is never
> > referenced from Lisp in this form.
> What is "cons1" in this context?
I said it some lines above: I defined it as name of the "first cons",
i.e. the original stream. The return value of `stream-range' in the
above example.
Michael.
next prev parent reply other threads:[~2018-02-28 16:20 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-27 9:22 bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files' Michael Heerdegen
2018-02-27 11:21 ` Eli Zaretskii
2018-02-27 11:39 ` Michael Heerdegen
2018-02-27 12:08 ` Michael Heerdegen
2018-02-27 18:08 ` Eli Zaretskii
2018-02-28 1:29 ` Noam Postavsky
2018-02-28 10:58 ` Michael Heerdegen
2018-02-28 16:00 ` Eli Zaretskii
2018-02-28 16:20 ` Michael Heerdegen [this message]
2018-02-28 17:22 ` Eli Zaretskii
2018-02-28 18:25 ` Michael Heerdegen
2018-03-01 11:25 ` Michael Heerdegen
2018-03-01 15:00 ` Eli Zaretskii
2018-03-02 14:11 ` Noam Postavsky
2018-03-02 15:06 ` Michael Heerdegen
2018-03-02 15:43 ` Eli Zaretskii
2018-03-02 20:16 ` Nicolas Petton
2018-03-02 20:58 ` Nicolas Petton
2018-03-03 7:56 ` Michael Heerdegen
2018-03-03 7:54 ` Michael Heerdegen
2018-03-03 8:47 ` Nicolas Petton
2018-03-02 21:48 ` John Mastro
2018-03-03 23:00 ` Noam Postavsky
2018-03-04 15:56 ` Noam Postavsky
2018-03-04 17:02 ` Eli Zaretskii
2018-03-11 18:52 ` Noam Postavsky
2018-03-11 20:31 ` Eli Zaretskii
2018-03-11 21:51 ` Noam Postavsky
2018-03-12 3:28 ` Eli Zaretskii
2018-03-13 1:59 ` Noam Postavsky
2018-03-13 16:06 ` Eli Zaretskii
2018-03-14 0:09 ` Noam Postavsky
2018-03-15 16:34 ` Eli Zaretskii
2018-03-17 15:53 ` Noam Postavsky
2018-03-17 16:10 ` Eli Zaretskii
2018-03-17 16:27 ` Eli Zaretskii
2018-03-17 17:28 ` Noam Postavsky
2018-03-19 20:05 ` Eli Zaretskii
2019-04-25 3:20 ` Noam Postavsky
2019-04-25 5:19 ` Michael Heerdegen
2019-05-10 13:20 ` Michael Heerdegen
2019-05-25 20:29 ` Noam Postavsky
2019-05-26 0:32 ` Michael Heerdegen
2019-05-26 0:40 ` Noam Postavsky
2019-05-26 1:15 ` Michael Heerdegen
2019-06-04 0:26 ` Noam Postavsky
2018-02-28 11:05 ` Michael Heerdegen
2018-02-28 13:20 ` Nicolas Petton
2018-03-01 10:44 ` Daniel Colascione
2018-03-01 15:51 ` Noam Postavsky
2018-03-01 16:54 ` Michael Heerdegen
2018-03-01 17:15 ` Noam Postavsky
2018-03-02 7:08 ` Michael Heerdegen
2018-03-02 13:01 ` Noam Postavsky
2018-03-02 13:13 ` Michael Heerdegen
2018-03-02 13:04 ` Michael Heerdegen
2018-02-27 18:00 ` Eli Zaretskii
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