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bug#34206: Pdumper giving a segfault


From: Eli Zaretskii
Subject: bug#34206: Pdumper giving a segfault
Date: Sat, 26 Jan 2019 12:49:24 +0200

> From: Compro Prasad <address@hidden>
> Date: Sat, 26 Jan 2019 14:33:57 +0530
> Cc: address@hidden
> 
> > > GDB log: https://pastebin.com/2uMPHCRV
> >
> > This seems to indicate your configuration is quite complex, and I
> > cannot easily understand what are you doing that is different from
> > the normal build and "emacs -Q" to start Emacs.  In particular, this:
> >
> >   $ gdb ./src/emacs-27.0.50.11
> >   Reading symbols from ./src/emacs-27.0.50.11...done.
> >   (gdb) r --dump-file="/home/compro/.emacs.d/.cache/dumps/spacemacs.pdmp"
> >   Starting program: 
> > /home/compro/Downloads/git.savannah.gnu.org/git/emacs/src/emacs-27.0.50.11 
> > --dump-file="/home/compro/.emacs.d/.cache/dumps/spacemacs.pdmp"
> >
> > indicates that your pdump file is spacemacs.pdmp, but I don't know how
> > that file was produced, and I cannot easily understand what is
> > different in your build procedure from the normal upstream build of
> > Emacs.
> I don't know if you can help me but I have some more information on
> how the dump might be produced.
> 
> https://github.com/Compro-Prasad/spacemacs/blob/pdumper-is-in-master/core/core-dumper.el#L68

I don't think this helps much, as I don't really know anything about
spacemacs and its build procedures.

> I went a bit further and tried executing the following using `C-x C-e`
> while running spacemacs:
> 
>    (dump-emacs-portable "~/test.pdmp")
> 
> It gave me: eval: unsupported object type in dump: window configuration
> 
> Is this a bug or I am supposed to run Emacs in batch mode while dumping?

Yes, dump-emacs-portable can only be invoked in batch mode.





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