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bug#27446: 25.1; Crashing on rendering of Font


From: Eli Zaretskii
Subject: bug#27446: 25.1; Crashing on rendering of Font
Date: Fri, 23 Jun 2017 11:45:06 +0300

> From: Mike Dupont <address@hidden>
> Date: Thu, 22 Jun 2017 20:23:16 -0400
> Cc: address@hidden
> 
> It shows line 2306, I was scrolling down.

Thanks.  CC'ing Handa-san, in the hope that he could look into this
issue.


> This is debian sid
> 
> 
> Here are the debian versions:
> Subject: emacs25: cras
> Package: emacs25
> Version: 25.1+1-4
> Severity: important
> 
> Dear Maintainer,
> 
> *** Reporter, please consider answering these questions, where appropriate ***
> 
>    * What led up to the situation?
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
>    * What was the outcome of this action?
>    * What outcome did you expect instead?
> 
> *** End of the template - remove these template lines ***
> 
> 
> -- System Information:
> Debian Release: stretch/sid
>   APT prefers oldoldstable
>   APT policy: (500, 'oldoldstable'), (500, 'unstable'), (500,
> 'stable'), (500, 'oldstable')
> Architecture: amd64 (x86_64)
> 
> Kernel: Linux 4.8.0-1-amd64 (SMP w/8 CPU cores)
> Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
> (ignored: LC_ALL set to en_US.UTF-8)
> Shell: /bin/sh linked to /bin/dash
> Init: sysvinit (via /sbin/init)
> 
> Versions of packages emacs25 depends on:
> ii  emacs25-bin-common     25.1+1-4
> ii  gconf-service          3.2.6-4
> ii  libacl1                2.2.52-3
> ii  libasound2             1.1.2-1
> ii  libatk1.0-0            2.22.0-1
> ii  libc6                  2.24-5
> ii  libcairo-gobject2      1.14.6-1+b1
> ii  libcairo2              1.14.6-1+b1
> ii  libdbus-1-3            1.10.12-1
> ii  libfontconfig1         2.11.0-6.7
> ii  libfreetype6           2.6.3-3+b1
> ii  libgconf-2-4           3.2.6-4
> ii  libgdk-pixbuf2.0-0     2.36.0-1
> ii  libgif7                5.1.4-0.4
> ii  libglib2.0-0           2.50.1-1
> ii  libgnutls30            3.5.7-3
> ii  libgomp1               6.2.1-5
> ii  libgpm2                1.20.4-6.2
> ii  libgtk-3-0             3.22.2-1
> ii  libice6                2:1.0.9-1+b1
> ii  libjpeg62-turbo        1:1.5.1-2
> ii  libm17n-0              1.7.0-3+b1
> ii  libmagickcore-6.q16-3  8:6.9.7.4+dfsg-11
> ii  libmagickwand-6.q16-3  8:6.9.7.4+dfsg-11
> ii  libotf0                0.9.13-3
> ii  libpango-1.0-0         1.40.3-3
> ii  libpangocairo-1.0-0    1.40.3-3
> ii  libpng16-16            1.6.26-2
> ii  librsvg2-2             2.40.16-1
> ii  libselinux1            2.6-1
> ii  libsm6                 2:1.2.2-1+b1
> ii  libtiff5               4.0.6-3
> ii  libtinfo5              6.0+20160917-1
> ii  libx11-6               2:1.6.3-1
> ii  libx11-xcb1            2:1.6.3-1
> ii  libxcb1                1.12-1
> ii  libxfixes3             1:5.0.2-1
> ii  libxft2                2.3.2-1
> ii  libxinerama1           2:1.1.3-1+b1
> ii  libxml2                2.9.4+dfsg1-2.1
> ii  libxpm4                1:3.5.11-1+b1
> ii  libxrandr2             2:1.5.0-1
> ii  libxrender1            1:0.9.9-2
> ii  zlib1g                 1:1.2.8.dfsg-2+b3
> 
> emacs25 recommends no packages.
> 
> Versions of packages emacs25 suggests:
> pn  emacs25-common-non-dfsg  <none>
> 
> -- no debconf information
> 
> On Thu, Jun 22, 2017 at 11:08 AM, Eli Zaretskii <address@hidden> wrote:
> >> From: Mike Dupont <address@hidden>
> >> Date: Thu, 22 Jun 2017 07:38:07 -0400
> >>
> >> Emacs crashes when viewing the tsv results of this query in wikidata,
> >> it looks like a font issue.
> >>
> >> https://query.wikidata.org/#%23moderism%0ASELECT%20%20%3Fc%20%3Fp4%20%3Fd%20%0AWHERE%0A%7B%0A%20%20%3Fc%20%3Fp4%20%3Fd%20.%0A%20%20%3Fa%20%3Fp3%20%3Fc%20.%0A%20%20%09%3Fa%20%3Fp%20%3Fitem%20.%0A%09%3Fitem%20ps%3AP135%20wd%3AQ878985%20.%0A%09%0A%7D
> >>
> >> #moderism
> >> SELECT  ?c ?p4 ?d
> >> WHERE
> >> {
> >>   ?c ?p4 ?d .
> >>   ?a ?p3 ?c .
> >>   ?a ?p ?item .
> >> ?item ps:P135 wd:Q878985 .
> >> }
> >>
> >> Export results in tsv and open in emacs.
> >
> > Does it crash as soon as you visit the file, or do you need to scroll
> > to a particular point in the file before Emacs crashes?
> >
> >> I will attach the core files and data files to the ticket for
> >> completeness.
> >
> > Thanks.  It looks like the crash is inside the libotf library which
> > Emacs uses for complex script shaping.  I'd suggest to begin by making
> > sure you have the latest version of that library and of its peer
> > m17n_flt library.





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