From: Noam Postavsky <npostavs@gmail.com>
To: John Mastro <john.b.mastro@gmail.com>
Cc: Michael Heerdegen <michael_heerdegen@web.de>,
Nicolas Petton <nicolas@petton.fr>,
30626@debbugs.gnu.org
Subject: bug#30626: 26.0.91; Crash when traversing a `stream-of-directory-files'
Date: Sun, 04 Mar 2018 10:56:36 -0500 [thread overview]
Message-ID: <87fu5f3kcr.fsf@gmail.com> (raw)
In-Reply-To: <87lgf83gun.fsf@gmail.com> (Noam Postavsky's message of "Sat, 03 Mar 2018 18:00:00 -0500")
Noam Postavsky <npostavs@gmail.com> writes:
> John Mastro <john.b.mastro@gmail.com> writes:
>
>> (let* ((stream0 (stream-range 1 1000000))
>> (stream stream0))
>> (setq stream0 nil) ;; <<< Inserted by compiler
>> (while (not (stream-empty-p stream))
>> (cl-callf stream-rest stream)))
>>
>> If the code does reference stream0 later, locals clearing can't help
>> you, but that's considered a "if it hurts, don't do it" situation.
>>
>> This probably isn't practical for Emacs, especially since it could only
>> work for byte-compiled code, but thought the prior art may be of
>> interest.
>
> Not sure how doable this solution is, but the fact that it works only
> for byte-compiled code seems fine to me. The interpreted case is doomed
> to fail anyway since the interpreter doesn't prune redundant variables
> from closures.
Hmm, I think it won't work by itself though, just doing
(stream-flush (stream-range 1 1000000))
also crashes, due to the head of the stream being referenced from the C
stack somewhere (I can get the address from gdb, but I can't figure out
how to get to the corresponding C variable from there).
next prev parent reply other threads:[~2018-03-04 15:56 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
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 [this message]
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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