From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=)
Subject: bug#25442: stacktrace
Date: Sun, 15 Jan 2017 21:30:00 +0100
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To: Jan Nieuwenhuizen <janneke@gnu.org>
Cc: 25442@debbugs.gnu.org

Jan Nieuwenhuizen <janneke@gnu.org> skribis:

> Ludovic Court=C3=A8s writes:
>
>> The =E2=80=98emacs=E2=80=99 package currently doesn=E2=80=99t have a =E2=
=80=98debug=E2=80=99 output.  So you
>> would first need to add one:
>>
>>   (outputs '("out" "debug"))
>>
>> and then install both outputs:
>>
>>   guix package -i emacs emacs:debug
>>
>> See
>> <https://www.gnu.org/software/guix/manual/html_node/Installing-Debugging=
-Files.html>.
>
> Thank you!  Very nice documentation.  As discussed on IRC it was needed
> to not use grafts to avoid gdb `CRC mismatch'
>
>     guix package --no-grafts -i emacs emacs:debug
>
> I also set
>
>     ~/.gdbinit
>     set debug-file-directory ~/.guix-profile/lib/debug
>
> and did
>
>     guix build --source emacs
>     tar xf /gnu/store/wqdh5lxyrkzjhxy2rvs7qsbrd07lw89i-emacs-25.1.tar.xz
>
> and set
>
>     (gdb) directory ~/src/guix/emacs-25.1/src
>
> Now I have a full backtrace; attached.

Cool, glad it worked.

> I'm not sure how to continue here; I built Emacs from GIT and there the
> problem is not present.  Looking at the diff from 25.1 until HEAD I do
> not see any obvious patches, neither does the git log point me to one.

So the question is whether this bug is introduced by our packaging or
whether it=E2=80=99s an upstream bug.

Perhaps you could build with (warning! this command does not
authenticate the tarball it downloads):

  guix package -i emacs emacs:debug \
    --with-source=3Dftp://alpha.gnu.org/gnu/emacs/emacs-25.1.91.tar.xz

or similarly with a nightly snapshot or Git checkout.

I=E2=80=99m afraid that=E2=80=99s all I can suggest now.

HTH!

Ludo=E2=80=99.