[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-26 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #16 from Michael Weghorn  ---
(In reply to Huanyu Liu from comment #14)
> I opened a new issue for fcitx5-qt:
> https://github.com/fcitx/fcitx5-qt/issues/60

Thanks a lot for the excellent analysis and even suggesting how to fix the
cause of the crash, which I see has been applied upstream now!

And thanks for moving the remaining issue to a separate bug, that's helpful.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-26 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

Huanyu Liu <1293660...@qq.com> changed:

   What|Removed |Added

 Resolution|--- |MOVED
 Status|UNCONFIRMED |RESOLVED

--- Comment #15 from Huanyu Liu <1293660...@qq.com> ---
(Moved to tdf#160838, as the description is no longer accurate.)

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #14 from Huanyu Liu <1293660...@qq.com> ---
I opened a new issue for fcitx5-qt:
https://github.com/fcitx/fcitx5-qt/issues/60

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #13 from Huanyu Liu <1293660...@qq.com> ---
After some investigation, I think I've found out the root causes of this crash!
(Yeah, root cause*s* indeed...)

First, I tried to search for the error message "width and height must be
positive and non-zero" and finally found it here:
https://invent.kde.org/plasma/kwin/-/blob/master/src/wayland/xdgshell.cpp#L863-L879
It seems that this error will be triggered when you are attempting to set the
size of something to a non-positive value, and the error message is
KWin-exclusive.

Then, I launched LO with `WAYLAND_DEBUG=1` and reproduced the crash. When
toggling fcitx in the main region of LO Writer, the following logs were
produced:

[3215568.634]  -> xdg_wm_base@3.create_positioner(new id xdg_positioner@51)
[3215568.638]  -> xdg_positioner@51.set_anchor_rect(209, 310, 1, 1)
[3215568.641]  -> xdg_positioner@51.set_anchor(6)
[3215568.643]  -> xdg_positioner@51.set_gravity(8)
[3215568.644]  -> xdg_positioner@51.set_size(62, 71)
[3215568.646]  -> xdg_positioner@51.set_constraint_adjustment(9)

When toggling fcitx in the comment region of LO Writer, the following logs were
produced (and then crashed):

[3215568.677]  -> xdg_wm_base@39.create_positioner(new id xdg_positioner@57)
[3215568.681]  -> xdg_positioner@57.set_anchor_rect(0, 0, 1, 0)
[3215568.684]  -> xdg_positioner@57.set_anchor(6)
[3215568.701]  -> xdg_positioner@57.set_gravity(8)
[3215568.703]  -> xdg_positioner@57.set_size(62, 71)
[3215568.705]  -> xdg_positioner@57.set_reactive()
[3215568.706]  -> xdg_positioner@57.set_constraint_adjustment(9)

Note that `set_anchor_rect(0, 0, 1, 0)` will indeed trigger the error message
mentioned above. I thought that these logs are related to fcitx positioning its
candidate window and found the relevant code here:
https://github.com/fcitx/fcitx5-qt/blob/master/qt5/platforminputcontext/fcitxcandidatewindow.cpp#L496-L590

According to the code of fcitx5-qt, it is indeed difficult to reproduce this
crash... You have to use KWin, Qt>=6.6.0, fcitx5-qt and Wayland all at the same
time... By the way, fcitx5-qt is not completely adapting to Qt6, but adding
patches for Qt6 to the existing Qt5 code, so the relevant code is in the qt5
directory.

fcitx5-qt is roughly doing the following things: (1) Request the current cursor
position of the "host" window from Qt; (2) Convert it to the native coordinate;
(3) Clamp the cursor position within the window if it is out of bound; (4) Show
the candidate window at the (possibly clamped) cursor position. However, there
is a bug at Step (3) such that only the width is properly handled (while the
height is possibly set to 0 thus causing the crash). Actually, the clamping
process is seldom encountered, so most of the time everything goes OK. I'll
report this bug to fcitx5-qt later.

At the LO side, the problem is that the cursor position is not correctly
reported to Qt at certain places (input line of Calc, comment region of Writer
& Draw & Impress and input region of Math). Actually, the cursor is not
blinking at (and only at) these places; this might be related to the crash.

Under X11, LO does not crash, but the candidate window of fcitx is indeed
displayed at the wrong position. This is not the case when using
`SAL_USE_VCLPLUGIN=gtk3` under Wayland, so it should be a Qt-exclusive issue.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #12 from Huanyu Liu <1293660...@qq.com> ---
Update 2: The same crash is also found to happen in the input region of LO
Math.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-02 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #11 from Michael Weghorn  ---
(In reply to Huanyu Liu from comment #10)
> Update: Apart from the input line of LO Calc, the same crash is also found
> to happen in the comment region of Writer, Draw and Impress, but NOT in the
> comment region of Calc.

I've retested with fcitx5 on Debian testing now (package fcitx5 5.1.7-1), but
still cannot reproduce a crash with either the Calc input line or comments in
Writer when using the kf5 VCL plugin.

Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 1e2de7ffd0a41c716f12f41d95ad7a462d120c6d
CPU threads: 12; OS: Linux 6.6; UI render: default; VCL: kf5 (cairo+wayland)
Locale: en-GB (en_GB.UTF-8); UI: en-US
Calc: threaded

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-04-01 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #10 from Huanyu Liu <1293660...@qq.com> ---
Update: Apart from the input line of LO Calc, the same crash is also found to
happen in the comment region of Writer, Draw and Impress, but NOT in the
comment region of Calc.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #9 from QA Administrators  ---
[Automated Action] NeedInfo-To-Unconfirmed

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #8 from Huanyu Liu <1293660...@qq.com> ---
(In reply to Michael Weghorn from comment #7)

> > However, setting it kf6 will also cause the crash described here.
> 
> Does it work with kf5 instead?

No. Setting SAL_USE_VCLPLUGIN to either kf5 of kf6 will cause the crash, but
gtk3 will not.

> > I'm using fcitx5 with version 5.1.8-1 in the Arch Linux repository. It seems
> > that fcitx4 (no suffix in the package name) has been discontinued, but not
> > removed from the repository.
> 
> Good to know. I might retry with that on my Debian testing if it also
> happens with kf5, otherwise need to switch to a VM that has Plasma 6.

I didn't remember experiencing this bug before upgrading to Plasma 6 (using
Plasma 5 + KF5), so maybe it's a bug specific to Plasma 6.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #7 from Michael Weghorn  ---
(In reply to Huanyu Liu from comment #6)
> (In reply to Michael Weghorn from comment #5)
> 
> > Can you try whether starting LO with environment variable
> > SAL_USE_VCLPLUGIN=gtk3 works in a KDE Plasma session as well (please
> > double-check that "Help" -> "About LibreOffice" says "VCL: gtk3" then.
> 
> With the environment variable SAL_USE_VCLPLUGIN=gtk3, LO does not crash
> anymore and everything works as expected.
> 
> By the way, in a previous version (half a month ago) of LO, setting it to
> kf6 will make any component of LO unable to save anything as a new file, so
> I set it to kf5 as a workaround. Now it seems that this bug has been fixed.

These were bugs in KF6, fixed in the meantime, see tdf#159701 for details.

> However, setting it kf6 will also cause the crash described here.

Does it work with kf5 instead?

> I'm using fcitx5 with version 5.1.8-1 in the Arch Linux repository. It seems
> that fcitx4 (no suffix in the package name) has been discontinued, but not
> removed from the repository.

Good to know. I might retry with that on my Debian testing if it also happens
with kf5, otherwise need to switch to a VM that has Plasma 6.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #6 from Huanyu Liu <1293660...@qq.com> ---
(In reply to Michael Weghorn from comment #5)

> Can you try whether starting LO with environment variable
> SAL_USE_VCLPLUGIN=gtk3 works in a KDE Plasma session as well (please
> double-check that "Help" -> "About LibreOffice" says "VCL: gtk3" then.

With the environment variable SAL_USE_VCLPLUGIN=gtk3, LO does not crash anymore
and everything works as expected.

By the way, in a previous version (half a month ago) of LO, setting it to kf6
will make any component of LO unable to save anything as a new file, so I set
it to kf5 as a workaround. Now it seems that this bug has been fixed. However,
setting it kf6 will also cause the crash described here.

> Thanks. It's somehow not offered for me in the virtual keyboard section in
> KDE system settings, but what works for me is to kill ibus, start fcitx, and
> start LO with environment variable QT_IM_MODULE=fcitx set.
> Still no crash for me when switching to mozc then (now also using a
> customized Super+Space shortcut), and typing Japanese characters also works
> fine.
> 
> What version of fcitx are you using? The one I tested is Debian package with
> version 1:4.2.9.9-1 (i.e. major version 4), but there's also a fcitx5
> package (version 5.1.7-1) available that I haven't tried so far.

I'm using fcitx5 with version 5.1.8-1 in the Arch Linux repository. It seems
that fcitx4 (no suffix in the package name) has been discontinued, but not
removed from the repository.

> Does that mean you still get the crash the same way as before, but there's
> no backtrace or is the behavior already different earlier?

LO Calc still crashes with return code 255, but doesn't leave any backtrace.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-21 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

Michael Weghorn  changed:

   What|Removed |Added

 Ever confirmed|0   |1
 Status|UNCONFIRMED |NEEDINFO

--- Comment #5 from Michael Weghorn  ---
(In reply to Huanyu Liu from comment #3)
> I've just installed GNOME and managed to get fcitx to work. Well, everything
> works perfectly and it seems to be a bug specific to KDE...

Can you try whether starting LO with environment variable
SAL_USE_VCLPLUGIN=gtk3 works in a KDE Plasma session as well (please
double-check that "Help" -> "About LibreOffice" says "VCL: gtk3" then.

> fcitx is not shipped with any "usable" input methods---only keyboard
> layouts. You need to install extra packages for "usable" input methods. I'm
> using Rime (for Chinese) and Mozc (for Japanese), and both will make
> LibreOffice Calc crash, so I think it's not specific to particular input
> methods.
> 
> To get fcitx to work for KDE under Wayland, you need to set the virtual
> keyboard in the system settings to fcitx and then do log-out-and-log-in.
> (fcitx will warn you for this if it's your first time to run it)

Thanks. It's somehow not offered for me in the virtual keyboard section in KDE
system settings, but what works for me is to kill ibus, start fcitx, and start
LO with environment variable QT_IM_MODULE=fcitx set.
Still no crash for me when switching to mozc then (now also using a customized
Super+Space shortcut), and typing Japanese characters also works fine.

What version of fcitx are you using? The one I tested is Debian package with
version 1:4.2.9.9-1 (i.e. major version 4), but there's also a fcitx5 package
(version 5.1.7-1) available that I haven't tried so far.


> > _How_to_get_a_backtrace
> 
> Strangely, LibreOffice Calc dies silently and returns zero, leaving no
> backtrace at all...

Does that mean you still get the crash the same way as before, but there's no
backtrace or is the behavior already different earlier?

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-20 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

--- Comment #4 from Huanyu Liu <1293660...@qq.com> ---
(In reply to Huanyu Liu from comment #3)

> Strangely, LibreOffice Calc dies silently and returns zero, leaving no
> backtrace at all...

Correction: it returns 255, not 0. Still no backtrace.

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-20 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

Huanyu Liu <1293660...@qq.com> changed:

   What|Removed |Added

 Ever confirmed|1   |0
 Status|NEEDINFO|UNCONFIRMED

--- Comment #3 from Huanyu Liu <1293660...@qq.com> ---
(In reply to Michael Weghorn from comment #2)

> On Debian testing, pressing meta+space doesn't toggle for me after just
> installing, then manually killing ibus and running the `fcitx` command,
> setting up 2 additional input methods (German, Japanese) after
> right-clicking the entry in the panel.
> Ctrl+Space shows some popup mentioning German, but otherwise seems to have
> no effect, and no crash.

Sorry, Meta+Space is my customized hotkey (because Ctrl+Space is used
frequently in lots of applications); the default one is indeed Ctrl+Space...

> I'm not a regular fcitx user. Can you describe in more detail how to set
> this up if the above is not enough?
> Is this specific to any particular input methods?

I've just installed GNOME and managed to get fcitx to work. Well, everything
works perfectly and it seems to be a bug specific to KDE...

fcitx is not shipped with any "usable" input methods---only keyboard layouts.
You need to install extra packages for "usable" input methods. I'm using Rime
(for Chinese) and Mozc (for Japanese), and both will make LibreOffice Calc
crash, so I think it's not specific to particular input methods.

To get fcitx to work for KDE under Wayland, you need to set the virtual
keyboard in the system settings to fcitx and then do log-out-and-log-in. (fcitx
will warn you for this if it's your first time to run it)

By the way, fcitx is specifically designed for KDE; GNOME users will be more
likely to use ibus.

> Can you please collect + attach a backtrace?
> https://wiki.documentfoundation.org/QA/BugReport/Debug_Information#GNU/Linux:
> _How_to_get_a_backtrace

Strangely, LibreOffice Calc dies silently and returns zero, leaving no
backtrace at all...

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-20 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

Michael Weghorn  changed:

   What|Removed |Added

 Status|UNCONFIRMED |NEEDINFO
 Ever confirmed|0   |1

--- Comment #2 from Michael Weghorn  ---
(In reply to Huanyu Liu from comment #0)
> Steps to Reproduce:
> 1. Install Wayland and fcitx (along with any input methods)
> 2. Open LibreOffice Calc and click on the input line
> 3. Press the hotkey (meta+space) to toggle the input method

On Debian testing, pressing meta+space doesn't toggle for me after just
installing, then manually killing ibus and running the `fcitx` command, setting
up 2 additional input methods (German, Japanese) after right-clicking the entry
in the panel.
Ctrl+Space shows some popup mentioning German, but otherwise seems to have no
effect, and no crash.

I'm not a regular fcitx user. Can you describe in more detail how to set this
up if the above is not enough?
Is this specific to any particular input methods?


> The following message will be shown in the terminal when crashing:
> [destroyed object]: error 0: width and height must be positive and non-zero
> The Wayland connection experienced a fatal error: 协议错误
> 
> (协议错误 means protocol error)

Can you please collect + attach a backtrace?
https://wiki.documentfoundation.org/QA/BugReport/Debug_Information#GNU/Linux:_How_to_get_a_backtrace


Version: 24.8.0.0.alpha0+ (X86_64) / LibreOffice Community
Build ID: 8950105f2e140f199518b8b637504706a84e3c6a
CPU threads: 12; OS: Linux 6.6; UI render: default; VCL: kf5 (cairo+wayland)
Locale: en-GB (en_GB.UTF-8); UI: en-US
Calc: threaded

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[Bug 160275] LibreOffice Calc crashes immediately when trying to use fcitx in the input line under Wayland

2024-03-19 Thread bugzilla-daemon
https://bugs.documentfoundation.org/show_bug.cgi?id=160275

Stéphane Guillou (stragu)  changed:

   What|Removed |Added

 CC||m.wegh...@posteo.de,
   ||stephane.guillou@libreoffic
   ||e.org

--- Comment #1 from Stéphane Guillou (stragu) 
 ---
Couldn't reproduce with LO 24.2.1.2 using kf5 (cairo+wayland), fcitx 4.2.9.8-5,
Ubuntu 22.04 + GNOME 42.9

Michael, maybe you have an idea?

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