From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#56553: 29.0.50; ASAN error with fringe bitmaps on NS Date: Fri, 15 Jul 2022 17:26:38 +0300 Message-ID: <83h73isb8h.fsf@gnu.org> References: <83cze7u7b7.fsf@gnu.org> <8569ECF9-6D19-4DCB-854C-2755D182F8AF@gmail.com> <8335f3tz02.fsf@gnu.org> <87cze6okcy.fsf@yahoo.com> <83mtdaslv6.fsf@gnu.org> <12E0397A-F443-4A1F-88F2-D3C8EA6D279C@gmail.com> <87v8ryeawb.fsf@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="4711"; mail-complaints-to="usenet@ciao.gmane.io" Cc: gerd.moellmann@gmail.com, luangruo@yahoo.com, 56553@debbugs.gnu.org To: Robert Pluim Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Jul 15 16:27:10 2022 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1oCMHd-000160-8h for geb-bug-gnu-emacs@m.gmane-mx.org; 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Original-Received: from [87.69.77.57] (port=3749 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oCMHB-0003EN-SU; Fri, 15 Jul 2022 10:26:42 -0400 In-Reply-To: <87v8ryeawb.fsf@gmail.com> (message from Robert Pluim on Fri, 15 Jul 2022 15:57:40 +0200) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:237109 Archived-At: > From: Robert Pluim > Cc: Eli Zaretskii , Po Lu , > 56553@debbugs.gnu.org > Date: Fri, 15 Jul 2022 15:57:40 +0200 > > >>>>> On Fri, 15 Jul 2022 15:55:40 +0200, Gerd Möllmann said: > > >> On 2022-07-15,, at 12:37 , Eli Zaretskii wrote: > >> > >>> From: Gerd Möllmann > >>> Date: Fri, 15 Jul 2022 11:14:02 +0200 > >>> Cc: Eli Zaretskii , > >>> 56553@debbugs.gnu.org > >>> > >>> > >>>> On 2022-07-15,, at 10:23 , Po Lu wrote: > >>> > >>>> Yes, you're right here. I think that code does want to access the > >>>> individual bytes. > >>> > >>> Interestingly, just doing > >>> > >>> const char *bitmap_bytes = (const char *) bits; > >>> bool bit = bitmap_bytes[byte] & (0x80 >> x % 8); > >>> > >>> here results in garbage fringe bitmaps beign displayed. I'm stumped. > >> > >> Is the machine little-endian or big-endian? > > Gerd> Good question! I think it's little-endian, but I'm not 100% sure. > > Both Intel and Arm based macs are little-endian Then I guess my theory doesn't hold water?