From: npostavs@users.sourceforge.net
To: Peter Wang <ptr.wang@gmail.com>
Cc: 25156@debbugs.gnu.org
Subject: bug#25156: 26.0.50; `describe-text-properties' hangs with 100% cpu usage when property is a char-table
Date: Sat, 10 Dec 2016 10:29:44 -0500 [thread overview]
Message-ID: <87h96ber9z.fsf@users.sourceforge.net> (raw)
In-Reply-To: <CABpyqyjar705jqTSFFagekEXzb6WNfWR_9A943VBJoE3QFjtVw@mail.gmail.com> (Peter Wang's message of "Sat, 10 Dec 2016 23:11:10 +0800")
Peter Wang <ptr.wang@gmail.com> writes:
> BTW, I also found that `describe-variable' has the same problem.
>
> (describe-variable 'lisp-mode-syntax-table)
>
> I have not looked into this yet, it could be the same bug.
>
> On Sat, Dec 10, 2016 at 11:03 PM, Peter Wang <ptr.wang@gmail.com> wrote:
>
> A simplest test case is like:
>
> (describe-property-list (list 'syntax-table lisp-mode-syntax-table))
>
> evaluating this Elisp expression will hang with 100% CPU usage.
Neither of these hang for me from emacs -Q, using latest master (fc0fd24c105b)
(benchmark 1 '(describe-variable 'lisp-mode-syntax-table)) ;=> "Elapsed time: 1.272053s (0.161946s in 6 GCs)"
(benchmark 1 '(describe-property-list (list 'syntax-table lisp-mode-syntax-table))) ;=> "Elapsed time: 1.165824s (0.139516s in 5 GCs)"
next prev parent reply other threads:[~2016-12-10 15:29 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-10 13:59 bug#25156: 26.0.50; `describe-text-properties' hangs with 100% cpu usage when property is a char-table Peter Wang
2016-12-10 14:22 ` Eli Zaretskii
2016-12-10 15:03 ` Peter Wang
2016-12-10 15:11 ` Peter Wang
2016-12-10 15:29 ` npostavs [this message]
2016-12-10 15:38 ` Peter Wang
2016-12-10 16:04 ` Eli Zaretskii
2016-12-10 16:16 ` Peter Wang
2016-12-10 16:40 ` npostavs
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