Recent libX11 update broke emacs

[Kevin Oberman]

On Mon, Aug 3, 2020 at 9:37 PM Ashish SHUKLA <ashish at freebsd.org> wrote:

> On 8/4/20 9:56 AM, Kevin Oberman wrote:
> > On Mon, Aug 3, 2020 at 3:09 PM Niclas Zeising
> > <zeising+freebsd at daemonic.se <mailto:zeising%2Bfreebsd at daemonic.se>>
> wrote:
> >
> >     On 2020-08-03 19:07, Kevin Oberman wrote:
> >     > This is a weird problem and I'm uncertain if it is in libW11,
> >     x11-server,
> >     > or emacs. As a result, I'm crossposting to both lists.
> >     >
> >     > Yesterday, after upgrading libX11 and x11-server, I could no
> >     longer run
> >     > Emacs to an  X display. It crashed quickly with a segmentation
> >     error in the
> >     > pthread library. Oddly, I could run it to my local xserver from a
> >     remote
> >     > system.
> >
> >     Where does the segfault occur before entering pthreads?
> >
> > Here is a backtrace  with symbols:
> > * thread #1, name = 'emacs-28.0.50', stop reason = signal SIGSEGV
> >   * frame #0: 0x000000002dc8584a
> >     frame #1: 0x000000002dc83ca4
> >     frame #2: 0x0000000000374fc0
> > emacs`detect_coding_utf_16(coding=0x00000000f2ee705a,
> > detect_info=0x0000000009d690dc) at coding.c:0:4
> >     frame #3: 0x000000000039584e
> > emacs`encode_invocation_designation(charset=0x000000000039584e,
> > coding=0x000000000083da20, dst="", p_nchars=0x000000000000000b) at
> > coding.c:4273:15
> >     frame #4: 0x00000000003958c3
> > emacs`encode_invocation_designation(charset=0x000000000083e230,
> > coding=0x0000000000000000, dst="", p_nchars=0x000000000083da40) at
> > coding.c:4280:4
> >     frame #5: 0x0000000000393df9
> > emacs`coding_alloc_by_realloc(coding=0x0000000000393df9, bytes=8641104)
> > at coding.c:1012:7
> >     frame #6: 0x0000000000395906
> > emacs`encode_invocation_designation(charset=0x000000000083dec0,
> > coding=0x000000000083de40, dst="", p_nchars=0x000000000083da70) at
> > coding.c:4285:6
> >   thread #2, name = 'emacs-28.0.50', stop reason = signal SIGSEGV
> >     frame #0: 0x000000002dc2beda
> >     frame #1: 0x000000002c929a26
> >   thread #3, name = 'emacs-28.0.50', stop reason = signal SIGSEGV
> >     frame #0: 0x000000002dc2beda
> >     frame #1: 0x000000002c929a26
> >   thread #4, name = 'emacs-28.0.50', stop reason = signal SIGSEGV
> >     frame #0: 0x000000002dc2beda
> >     frame #1: 0x000000002c929a26
>
> Thanks for the providing the information.
>
> Is the above backtrace with `emacs', or `emacs -Q' ? If former, then
> could you see if latter segfaults as well ?


> Thanks!
> --
> Ashish SHUKLA | GPG: F682CDCC39DC0FEAE11620B6C746CFA9E74FA4B0
>

emacs-Q? Emacs with qt? It's stock emacs.Default build options. I've tried
both emacs and emacs-devel and seen no difference.

> --
> Kevin Oberman, Part time kid herder and retired Network Engineer
> E-mail: rkoberman at gmail.com
> PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683
>


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