GNU bug report logs - #38176
27.0.50; pdf-tools images do not display

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Óscar Fuentes <ofv <at> wanadoo.es>
Subject: bug#38176: closed (Re: bug#38176: 27.0.50; pdf-tools images do
 not display)
Date: Sun, 17 Nov 2019 19:03:04 +0000

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Your bug report

#38176: 27.0.50; pdf-tools images do not display

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 38176 <at> debbugs.gnu.org.

-- 
38176: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=38176
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Óscar Fuentes <ofv <at> wanadoo.es>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 38176-done <at> debbugs.gnu.org
Subject: Re: bug#38176: 27.0.50; pdf-tools images do not display
Date: Sun, 17 Nov 2019 20:02:26 +0100

Eli Zaretskii <eliz <at> gnu.org> writes:

> This was supposed to be fixed already, see bug#37578.

Indeed. While in the process of forwarding Lars' insights to pdf-tools,
noticed that they implemented a fix (still unavailable from the
distribution channels).

The fact that the minibuffer window got corrupted and Emacs entered an
infinite loop made me think that the problem was on Emacs alone.

Closing.

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From: Óscar Fuentes <ofv <at> wanadoo.es>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; pdf-tools images do not display
Date: Tue, 12 Nov 2019 07:19:06 +0100

With pdf-tools installed (version 0.90 available on Melpa-stable), visit
a multi-page PDF document. Press <Space> until the end of the first page
is visible, press <Space> again. Normally the second page would be
displayed, but the window shows an empty area. Press <Down> cursor
arrow, the image of the second page turns visible. Press C-x 3 then C-x
1 and the image disappears.

On my setup, after performing the steps described above, the vertical
lines which pdf-tools surrounds the image with are drawn on the
minibuffer window.

Also, on one occasion, Emacs entered what seemed an unresponsive state
with 100% cpu utilization. After attaching gdb the stack frame was:

(gdb) bt
#0  0x0000563f84a110b8 in add_row_entry (row=0x563f9b8200a0)
    at ../../emacs/src/dispnew.c:4268
#1  0x0000563f84a16910 in scrolling_window (tab_line_p=<optimized out>, w=0x5b9b)
    at ../../emacs/src/dispnew.c:4491
#2  0x0000563f84a16910 in update_window
    (w=w <at> entry=0x563f86c70b40, force_p=force_p <at> entry=true) at ../../emacs/src/dispnew.c:3573
#3  0x0000563f84a17301 in update_window_tree
    (w=w <at> entry=0x563f86c70b40, force_p=force_p <at> entry=true) at ../../emacs/src/dispnew.c:3330
#4  0x0000563f84a1754b in update_frame (f=f <at> entry=0x563f8b6a7700, force_p=<optimized out>, 
    force_p <at> entry=false, inhibit_hairy_id_p=inhibit_hairy_id_p <at> entry=false)
    at ../../emacs/src/dispnew.c:3219
#5  0x0000563f84a4b485 in redisplay_internal () at ../../emacs/src/xdisp.c:15669
#6  0x0000563f84ae120f in read_char
    (commandflag=1, map=XIL(0x563f9475d8e3), prev_event=XIL(0), used_mouse_menu=0x7ffdbf70da1b, end_time=0x0) at ../../emacs/src/keyboard.c:2488
#7  0x0000563f84ae3b6a in read_key_sequence
    (keybuf=<optimized out>, prompt=XIL(0), dont_downcase_last=<optimized out>, can_return_switch_frame=true, fix_current_buffer=true, prevent_redisplay=<optimized out>)
    at ../../emacs/src/keyboard.c:9536
#8  0x0000563f84ae520c in command_loop_1 () at ../../emacs/src/lisp.h:1032
#9  0x0000563f84b4a377 in internal_condition_case
    (bfun=bfun <at> entry=0x563f84ae5030 <command_loop_1>, handlers=handlers <at> entry=XIL(0x90), hfun=hfun <at> entry=0x563f84adc2f0 <cmd_error>) at ../../emacs/src/eval.c:1355
#10 0x0000563f84ad7154 in command_loop_2 (ignore=ignore <at> entry=XIL(0))
    at ../../emacs/src/lisp.h:1032
#11 0x0000563f84b4a2d1 in internal_catch
    (tag=tag <at> entry=XIL(0xcc30), func=func <at> entry=0x563f84ad7130 <command_loop_2>, arg=arg <at> entry=XIL(0)) at ../../emacs/src/eval.c:1116
#12 0x0000563f84ad70fb in command_loop () at ../../emacs/src/lisp.h:1032
#13 0x0000563f84adbf06 in recursive_edit_1 () at ../../emacs/src/keyboard.c:714
#14 0x0000563f84adc232 in Frecursive_edit () at ../../emacs/src/keyboard.c:786
#15 0x0000563f84a0e866 in main (argc=2, argv=<optimized out>)

Lisp Backtrace:
"redisplay_internal (C function)" (0x0)



In GNU Emacs 27.0.50 (build 3, x86_64-pc-linux-gnu, X toolkit)
 of 2019-11-09 built on sky
Repository revision: f8284f1e408b38e6a3c0e2a1d5a465fefac6800a
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12004000
System Description: Debian GNU/Linux bullseye/sid

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