From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Xu Fasheng Newsgroups: gmane.emacs.bugs Subject: bug#21152: emacs make system blocked if "Xft/DPI = -1" in xsettings Date: Tue, 28 Jul 2015 13:58:28 +0800 Message-ID: NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1438097601 7011 80.91.229.3 (28 Jul 2015 15:33:21 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 28 Jul 2015 15:33:21 +0000 (UTC) To: 21152@debbugs.gnu.org Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Tue Jul 28 17:33:15 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZK6sU-0001zk-Nj for geb-bug-gnu-emacs@m.gmane.org; Tue, 28 Jul 2015 17:33:14 +0200 Original-Received: from localhost ([::1]:59538 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZK6sU-00016A-2c for geb-bug-gnu-emacs@m.gmane.org; Tue, 28 Jul 2015 11:33:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36666) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZK6sJ-0000xL-JF for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 11:33:09 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZK6sI-0001uy-KT for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 11:33:03 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:59692) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZK6sI-0001uq-IN for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 11:33:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1ZK6sI-00082S-12 for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 11:33:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Xu Fasheng Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Tue, 28 Jul 2015 15:33:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: report 21152 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: X-Debbugs-Original-To: bug-gnu-emacs@gnu.org Original-Received: via spool by submit@debbugs.gnu.org id=B.143809756030868 (code B ref -1); Tue, 28 Jul 2015 15:33:01 +0000 Original-Received: (at submit) by debbugs.gnu.org; 28 Jul 2015 15:32:40 +0000 Original-Received: from localhost ([127.0.0.1]:32905 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZK6rv-00081o-AP for submit@debbugs.gnu.org; Tue, 28 Jul 2015 11:32:39 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:49313) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1ZJxuM-00084c-CV for submit@debbugs.gnu.org; Tue, 28 Jul 2015 01:58:34 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZJxuK-0000VO-Tu for submit@debbugs.gnu.org; Tue, 28 Jul 2015 01:58:33 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:56732) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZJxuK-0000VC-Qi for submit@debbugs.gnu.org; Tue, 28 Jul 2015 01:58:32 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:34567) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZJxuJ-0000bC-Se for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 01:58:32 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZJxuI-0000Tb-CU for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 01:58:31 -0400 Original-Received: from mail-wi0-x22b.google.com ([2a00:1450:400c:c05::22b]:35055) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZJxuI-0000T1-4q for bug-gnu-emacs@gnu.org; Tue, 28 Jul 2015 01:58:30 -0400 Original-Received: by wibxm9 with SMTP id xm9so140860324wib.0 for ; Mon, 27 Jul 2015 22:58:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=AnBIRRB9ordO8JRrQvKztl978z8v/+O5jQ3Nabc/I+8=; b=0zrcQKkQH9HBdLahpDVtyCA7jowgiA0bDm1uujQNV1L166bVCVa6dtGh6C3ZVKFbgR 8d4zbtIgfTDjFTkU1tJGaX2SkJBsMMfCvO4Klk5XtrcTbkDl85JOdA1N+vxZDEIXXfyQ SoHU27v/cSEvJjgIrlpj4M02YcJIT719N9Khe+6QorhXoERLXKcyLa6OoRAhNu/tbnks 0mB2D3gKqvDuiI34WzgSmqODR2R/GLp/2pxVdIxbrl69K/NATW2BObjv2KbgEMws4GUU CH7mmzbNjGXGxcSC633b7ePGDCF1aWOVS+wrqVZBA0eg5XLfDSKMlTrHcb7LkKTPNnSF uxgQ== X-Received: by 10.180.215.101 with SMTP id oh5mr3141174wic.6.1438063108788; Mon, 27 Jul 2015 22:58:28 -0700 (PDT) Original-Received: by 10.27.17.4 with HTTP; Mon, 27 Jul 2015 22:58:28 -0700 (PDT) X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Mailman-Approved-At: Tue, 28 Jul 2015 11:32:38 -0400 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 140.186.70.43 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-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:105201 Archived-At: Hi, everyone. I found that emacs could not compute a right dpi value if "Xft/DPI = -1" in xsettings. The document said "Xft/DPI" is an integer, and "-1" is the default value [1]. And in the code of src/xsettings.c:parse_settings(), all the interger value in xsettings are converted to CARD32(unsigned int). So if Xft/DPI is "-1", emacs will convert it to uint(4294967295), and owns a huge dpi(4294967295/1024=4194303). Its so huge that will make system blocked. Here is the code snippets in emacs24-24.5+1/src/xsettings.c:parse_settings() from debian/sid: .... 420: CARD32 vlen, ival = 0; .... 544: else if (strcmp (name, "Xft/DPI") == 0) 545: { 546: settings->seen |= SEEN_DPI; 547: settings->dpi = (double)ival/1024.0; 548: } [1] http://www.freedesktop.org/wiki/Specifications/XSettingsRegistry/