GNU bug report logs - #34138
27.0.50; Delayed display of PDF file images

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Message #38 received at 34138 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: rudalics <at> gmx.at, 34138 <at> debbugs.gnu.org, politza <at> hochschule-trier.de,
 tsdh <at> gnu.org
Subject: Re: bug#34138: 27.0.50; Delayed display of PDF file images
Date: Sun, 20 Jan 2019 18:50:00 +0200

> From: Stephen Berman <stephen.berman <at> gmx.net>
> Cc: rudalics <at> gmx.at,  34138 <at> debbugs.gnu.org,  politza <at> hochschule-trier.de,  tsdh <at> gnu.org
> Date: Sun, 20 Jan 2019 17:31:13 +0100
> 
> > Hmm... can you attach the debugger to Emacs during that delay, and
> > show both C backtrace and Lisp backtrace?
> 
> I'm not sure what "attach the debugger to Emacs during that delay"
> means

It means, during the time of the delay, type from the shell prompt:

  $ gdb -p PID

where PID is the numeric process-id of the Emacs process; you should
find that in advance, e.g. by running "ps".  Once GDB starts and shows
its prompt, "(gdb)", type:

  (gdb) thread apply all bt

This should show the C-level backtrace.  Then:

  (gdb) source /path/to/emacs/src/.gdbinit
  (gdb) xbacktrace

The last command should show the Lisp-level backtrace.

Thanks.

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