From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Andy Moreton Newsgroups: gmane.emacs.bugs Subject: bug#32463: 27.0.50; (logior -1) => 4611686018427387903 Date: Tue, 21 Aug 2018 11:50:15 +0100 Message-ID: References: <5230a57b-5896-606d-f157-2e547710b6e8@cs.ucla.edu> <7b6c9c32-c301-09db-d23e-ce976afcb5c1@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: blaine.gmane.org 1534849448 16792 195.159.176.226 (21 Aug 2018 11:04:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 21 Aug 2018 11:04:08 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.50 (windows-nt) To: 32463@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Aug 21 13:04:04 2018 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 1fs4S9-000494-Q7 for geb-bug-gnu-emacs@m.gmane.org; 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Tue, 21 Aug 2018 12:48:12 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 20 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:gogAIkhjF+3AB7L+q5F7nWPkIpg= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x 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:149639 Archived-At: On Tue 21 Aug 2018, Paul Eggert wrote: > Pip Cet wrote: >> I'm not sure what a reasonable limit would be, but I think a global >> limit of bignum size to something that allows for "immediate" >> computations would be best. > > I installed the attached patch to do that. It tentatively defaults to a limit > of 2↑↑5 (i.e., 2**65536) for bignums, overrideable by setting a new variable > 'integer-width' that defaults to 65536. This default should be big enough for > almost all Emacs applications and should avoid issues of aborts and hangs. Have you checked a mini-gmp build to ensure that this patch works if the GMP library is not installed ? It might be slightly faster to use mpz_limbs_read in make_number instead of mpz_getlimbn. AndyM