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bug#37331: 27.0.50; segfault when starting from pdump and using dbus
From: |
Lars Ingebrigtsen |
Subject: |
bug#37331: 27.0.50; segfault when starting from pdump and using dbus |
Date: |
Mon, 11 Oct 2021 16:28:10 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux) |
Leonard Lausen <leonard@lausen.nl> writes:
> Content of $HOME/debug-init.el
>
> (require 'dbus)
>
> Dump
>
> emacs --batch -Q -l $HOME/debug-init.el -eval '(dump-emacs-portable
> "/tmp/dmp")
>
> Load
>
> emacs -Q -l $HOME/debug-init.el --dump-file=/tmp/dmp
>
> Execute
>
> (require 'dbus)
> (dbus-get-unique-name :system)
>
> Error
>
> Debugger entered--Lisp error: (dbus-error "No connection to bus" :system)
> dbus-get-unique-name(:system)
> (progn (dbus-get-unique-name :system))
> eval((progn (dbus-get-unique-name :system)) t)
I can reproduce this in Emacs 29, too. This is because dbus.el
initialises the buses like this:
;; Initialize `:system' and `:session' buses. This adds their file
;; descriptors to input_wait_mask, in order to detect incoming
;; messages immediately.
(when (featurep 'dbusbind)
(dbus-ignore-errors
(dbus-init-bus :system))
(dbus-ignore-errors
(dbus-init-bus :session)))
But this isn't run when dbus.el was present in Emacs when it was dumped,
so these inits have to be run in a different way. I'm not sure where
init code like this is supposed to happen in a pdumped Emacs, though.
Anybody?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
- bug#37331: 27.0.50; segfault when starting from pdump and using dbus,
Lars Ingebrigtsen <=