From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: =?UTF-8?Q?=E5=BC=A0=E4=BA=91=E5=B3=B0?= Newsgroups: gmane.emacs.bugs Subject: bug#65198: 29.1; Emacs29.1 crash in function face_for_font Date: Fri, 11 Aug 2023 22:21:11 +0800 Message-ID: References: <83r0obi53o.fsf@gnu.org> <83bkfeizgz.fsf@gnu.org> <831qgaiw2d.fsf@gnu.org> <83ttt6gl9l.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="27611"; mail-complaints-to="usenet@ciao.gmane.io" Cc: 65198@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Fri Aug 11 16:22:21 2023 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 1qUT1x-0006tg-Bw for geb-bug-gnu-emacs@m.gmane-mx.org; 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Fri, 11 Aug 2023 07:21:23 -0700 (PDT) In-Reply-To: <83ttt6gl9l.fsf@gnu.org> 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-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:267214 Archived-At: Thread 1 "emacs" received signal SIGSEGV, Segmentation fault. 0x0000555555616206 in produce_glyphless_glyph (it=3D0x7fffffff6cc0, for_no_font=3Dfor_no_font@entry=3Dfalse, acronym=3Dacronym@entry=3D0x0) at xdisp.c:31791 31791 font =3D face->font ? face->font : FRAME_FONT (it->f); (gdb) p it->face_id $1 =3D 0 (gdb) p it->c $2 =3D 9888 (gdb) p FRAME_FONT(it->f) No symbol "FRAME_FONT" in current context. (gdb) p (it->f)->output_data.x->font There is no member named font. (gdb) p face Cannot access memory at address 0x120 (gdb) p FACE_FROM_ID (it->f, it->face_id)->ascii_face No symbol "FACE_FROM_ID" in current context. (gdb) p it->what $3 =3D IT_GLYPHLESS Eli Zaretskii =E4=BA=8E2023=E5=B9=B48=E6=9C=8811=E6=97=A5=E5= =91=A8=E4=BA=94 14:12=E5=86=99=E9=81=93=EF=BC=9A > > > From: =E5=BC=A0=E4=BA=91=E5=B3=B0 > > Date: Fri, 11 Aug 2023 08:50:04 +0800 > > Cc: 65198@debbugs.gnu.org > > > > more clear GDB info: > > > > Thread 1 "emacs" received signal SIGSEGV, Segmentation fault. > > 0x0000555555618c06 in produce_glyphless_glyph (it=3D0x7fffffff67d0, > > for_no_font=3Dfor_no_font@entry=3Dfalse, acronym=3Dacronym@entry=3D0x0)= at > > xdisp.c:31791 > > 31791 font =3D face->font ? face->font : FRAME_FONT (it->f); > > Actually, this is progress: we are now crashing a bit later, while > trying to display an empty box instead of a character that has no font > and no suitable face. To resolve this, please help me by providing > the results of the following GDB commands after Emacs crashes and GDB > kicks in: > > (gdb) p it->face_id > (gdb) p it->c > (gdb) p FRAME_FONT(it->f) > (gdb) p (it->f)->output_data.x->font > > Thanks.