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Bug 123654 - kde5: Writer crashes when text selected on close (Wayland only)
Summary: kde5: Writer crashes when text selected on close (Wayland only)
Alias: None
Product: LibreOffice
Classification: Unclassified
Component: graphics stack (show other bugs)
(earliest affected)
Hardware: All Linux (All)
: medium normal
Assignee: Not Assigned
Keywords: haveBacktrace
Depends on:
Blocks: KDE
  Show dependency treegraph
Reported: 2019-02-22 15:41 UTC by Michael Weghorn
Modified: 2019-06-14 10:41 UTC (History)
2 users (show)

See Also:
Crash report or crash signature:

GDB backtrace (9.00 KB, text/plain)
2019-02-22 15:42 UTC, Michael Weghorn
gdb bt (10.78 KB, text/plain)
2019-02-24 15:44 UTC, Julien Nabet

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Description Michael Weghorn 2019-02-22 15:41:00 UTC
Steps are the same as those described in bug 122042, except that this is on Wayland only now:

0. use a Wayland session (test was with Plasma on Debian testing)
1. Open writer with SAL_USE_VCLPLUGIN=kde5 soffice --writer
2. Type something
3. Select text
4. Close LO and select "Don't save"

Result: LibreOffice crashes.

The crash does not occur when
* using kde5 on X11 intead of Wayland
* switching to the gtk3 VCL plugin

This happens with the current daily build:

Build ID: f90e2a327f0d19225b5f54a10be6a3d12567a30a
CPU threads: 4; OS: Linux 4.19; UI render: default; VCL: kde5; 
TinderBox: Linux-rpm_deb-x86_64@86-TDF-dbg, Branch:master, Time: 2019-02-22_02:31:00
Locale: en-GB (en_GB.UTF-8); UI-Language: en-US
Calc: threaded
Comment 1 Michael Weghorn 2019-02-22 15:42:51 UTC
Created attachment 149534 [details]
GDB backtrace
Comment 2 Julien Nabet 2019-02-24 15:44:25 UTC
Created attachment 149555 [details]
gdb bt

On pc Debian x86-64 with master sources updated today + kde5 + wayland + enable-dbgutil, I could reproduce the crash.

Hope this bt + console logs may help.
Comment 3 Michael Weghorn 2019-06-08 21:01:51 UTC
With the pending change , patch set 11, the issue is no longer reproducible, so this will probably be fixed soon.
Comment 4 Michael Weghorn 2019-06-14 10:41:05 UTC
(In reply to Michael Weghorn from comment #3)
> With the pending change , patch set
> 11, the issue is no longer reproducible, so this will probably be fixed soon.

That change has been merged and the issue is gone, i.e. fixed with

commit bcca1cf28cbd6c961d59bd8b8a8e58184dfc3823
Author: Jan-Marek Glogowski <>
Date:   Fri May 31 16:40:34 2019 +0000

    tdf#122239 Qt5 implement lazy clipboard handling
    This changes the Qt5Clipboard to a lazy loading one, which will
    just deliver data on read requests. This fixes not only the
    PRIMARY selection problems with Writer, but will generally speed
    up C'n'P, inside LO, because the data has not to be copied or
    transferred via QMimeData.
    This is mainly done by implementing the "mirror" interface of the
    Qt5Transferable, the Qt5MimeData using the retrieveData override.
    To prevent clipboard loss on shutdown, this sets a deep copied
    QMimeData of the current XTransferable, to make it persistent.
    This code explicitly doesn't use any of the QMimeData convenience
    functions and relies completely on LO's string handling, so we
    won't mix in eventual Qt bugs; all bugs are ours...
    Change-Id: I43d92a95df8fcac88dc41b00021cea0b5f040413
    Tested-by: Jenkins
    Reviewed-by: Michael Weghorn <>
    Reviewed-by: Thorsten Behrens <>