From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: npostavs@users.sourceforge.net Newsgroups: gmane.emacs.bugs 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 Message-ID: <87h96ber9z.fsf@users.sourceforge.net> References: <83oa0jg8z6.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1481383756 6091 195.159.176.226 (10 Dec 2016 15:29:16 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 10 Dec 2016 15:29:16 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1 (gnu/linux) Cc: 25156@debbugs.gnu.org To: Peter Wang Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Dec 10 16:29:11 2016 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cFjaG-0000D8-2J for geb-bug-gnu-emacs@m.gmane.org; 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Sat, 10 Dec 2016 07:28:42 -0800 (PST) Original-Received: from zony ([45.2.7.65]) by smtp.googlemail.com with ESMTPSA id 22sm16484299iog.28.2016.12.10.07.28.41 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 10 Dec 2016 07:28:42 -0800 (PST) In-Reply-To: (Peter Wang's message of "Sat, 10 Dec 2016 23:11:10 +0800") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:126808 Archived-At: Peter Wang 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 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)"