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Re: Several problems

From: martin rudalics
Subject: Re: Several problems
Date: Fri, 01 Aug 2014 15:06:51 +0200

David Kastrup wrote:

> the horizontal scroll bar code crashing on me
> whenever I restore the desktop (which involves restoring the window
> configuration).
> _That_ crash would have been
> (gdb) bt
> #0  0xb7fdd424 in __kernel_vsyscall ()
> #1  0xb69460c6 in raise (address@hidden)
>     at ../nptl/sysdeps/unix/sysv/linux/pt-raise.c:37
> #2  0x08124299 in terminate_due_to_signal (address@hidden,
>     address@hidden) at ../../emacs/src/emacs.c:387
> #3  0x0813cef7 in emacs_abort () at ../../emacs/src/sysdep.c:2198
> #4  0x080f3e38 in XTredeem_scroll_bar (w=0x8752f30)
>     at ../../emacs/src/xterm.c:5948

Nicolas Avrutin wrote:

> I'm also experiencing this issue and would be happy to help you with
> testing. I'm also using gtk3 and --without-toolkit-scroll-bars. I can
> trigger the crash by running (sauron-start)[1] or
> (jabber-connect-all)[2], in xmonad sending any emacs frame to a
> different workspace, and then going to the workspace to which I sent the
> frame.
> I have applied your patch and the crash still occurs. Here is my
> backtrace after running it through addr2line[3]:
> emacs_backtrace at emacs-git/src/sysdep.c:2182
> terminate_due_to_signal at emacs-git/src/emacs.c:381
> emacs_open at emacs-git/src/sysdep.c:2211
> XTredeem_scroll_bar at emacs-git/src/xterm.c:5971

Faried Nawaz wrote:

> I'm not on the mailing list, and I'm not sure where to report bugs, but I
> ran into the same crash as David Kastrup today, after I pulled and built
> from trunk.  Your patch in
> http://lists.gnu.org/archive/html/emacs-devel/2014-07/msg00373.html doesn't
> fix the problem for me.
> I'm not sure how to reliably trigger the problem, but this usually works
> for me.  I start Emacs under gdb, with -Q, and then evaluate these lines:
> (require 'package)
> (setq package-archives '(("gnu" . "http://elpa.gnu.org/packages/";)
>                           ("marmalade" . "http://marmalade-repo.org/packages/
> ")
>                           ("melpa" . "http://melpa.milkbox.net/packages/";)))
> (package-initialize)
> I run M-x list-packages RET and switch away to another virtual desktop.
> Some combination of switching away/switching back, or partially covering
> the frame with an xterm before switching causes the crash for me.  It might
> be timer related, too -- it doesn't happen immediately, but after a while.
> It takes a while to fetch the packages list.
> The backtrace is at https://gist.github.com/faried/f1a01fac78a790f32ebe
> I use Ubuntu 12.04 (fully updated, 32-bit) and I compile Emacs with
> ./configure --without-pop --with-x-toolkit=lucid \
>      --prefix=/usr/local/src --without-toolkit-scroll-bars \
>      --enable-link-time-optimization --without-compress-install \
>      --with-file-notification=yes
> I hope this helps locate the cause of the problem.

Please try the attached patch and tell me whether the problem persists.

Thank you, martin

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