[digikam] [Bug 339008] New: DigiKam crashed when opening import window

[manuel.kirzinger]

https://bugs.kde.org/show_bug.cgi?id=339008

            Bug ID: 339008
           Summary: DigiKam crashed when opening import window
           Product: digikam
           Version: 4.2.0
          Platform: MS Windows
                OS: MS Windows
            Status: UNCONFIRMED
          Severity: crash
          Priority: NOR
         Component: Import
          Assignee: [hidden email]
          Reporter: [hidden email]

Created attachment 88655
  --> https://bugs.kde.org/attachment.cgi?id=88655&action=edit
crashreport

Crashed right after pressing import button. Import window did not even show up.

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[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=339008

--- Comment #1 from Christoph Feck <[hidden email]> ---
Looking at the backtrace, there are two threads that mention ICCPreviewWidget.
Are UI classes used in multiple threads? Maybe because of external libraries
needing nested event loops?

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=339008

Gilles Caulier <[hidden email]> changed:

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--- Comment #2 from Gilles Caulier <[hidden email]> ---
yes, digiKam use multithreading everywhere.

When i said everywhere, digiKam cannot be started when relevant shared lib for
multithreading are not installed (typically QThread)

So, it's not a threads problem. Sound like an unsupported icc profile embeded
in image, which cannot be managed by lcms shared lib.

Gilles Caulier

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[Christoph Feck]

https://bugs.kde.org/show_bug.cgi?id=339008

--- Comment #3 from Christoph Feck <[hidden email]> ---
http://qt-project.org/doc/qt-4.8/thread-basics.html states:

"As mentioned, each program has one thread when it is started. This thread is
called the "main thread" (also known as the "GUI thread" in Qt applications).
The Qt GUI must run in this thread. All widgets and several related classes,
for example QPixmap, don't work in secondary threads."

So while it is nice that digiKam uses multiple threads, it cannot use
ICCPreviewWidget outside of the main UI thread.

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[Gilles Caulier-4]

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--- Comment #4 from Gilles Caulier <[hidden email]> ---
I know all of this (:=)))

But i'm sure that iccpreview widget is not used outside main thread.

Note : About QPixmap, it's only true under X11 based env, because X11 is not
re-entrant...

Gilles

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[Gilles Caulier-4]

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--- Comment #5 from Gilles Caulier <[hidden email]> ---
digiKam 4.5.0 have been released.

Crash still reproducible with this release ?

Gilles Caulier

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[Peter F]

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Peter F <[hidden email]> changed:

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--- Comment #6 from Peter F <[hidden email]> ---
With 4.5.0, you can still
- Start Digikam
- Import -> Add images...
- Select folder
- ... See The KDE crash handler

I attached the latest Crash log

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[Peter F]

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--- Comment #7 from Peter F <[hidden email]> ---
Created attachment 89914
  --> https://bugs.kde.org/attachment.cgi?id=89914&action=edit
Crash log

Crash log created by the KDE crash handler, when Digikam crashes while it
should import images.

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|4.2.0                       |4.5.0

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[Gilles Caulier-4]

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--- Comment #8 from Gilles Caulier <[hidden email]> ---
Problem still reproducible with last stable digiKam 4.8.0 ?

Gilles Caulier

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[Peter F]

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--- Comment #9 from Peter F <[hidden email]> ---
Can't check:
The most recent Digikam-Installer package on
http://download.kde.org/stable/digikam/ is 4.5.0

Maybe, you can forward a request to the one who generates the windows installer
to be so kind to let it run? (If it'd be that easy...)

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[Gilles Caulier-4]

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--- Comment #10 from Gilles Caulier <[hidden email]> ---
Peter,

digiKam 4.7.0 for Windows is available :

http://download.kde.org/stable/digikam/digiKam-installer-4.7.0-1-win32.exe.mirrorlist

Please test and report.

Thanks in advance

Gilles Caulier

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[Peter F]

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--- Comment #11 from Peter F <[hidden email]> ---
Hi Gilles,

thank you for providing the installer!
I'll try it this evening and report the results.

Peter

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[Peter F]

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--- Comment #12 from Peter F <[hidden email]> ---
Hi Gilles,

on my Win8.1-System, the Digikam 4.7.0 you provided is still crashing on
import.
I was able to do the following:
Import-> Add images -> [walk to import folder]-> select folder -> crash

I attached the crash log.

cu
Peter

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[Peter F]

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--- Comment #13 from Peter F <[hidden email]> ---
Created attachment 91757
  --> https://bugs.kde.org/attachment.cgi?id=91757&action=edit
Crash log

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|4.5.0                       |4.7.0

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[aidan-2]

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aidan <[hidden email]> changed:

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--- Comment #14 from aidan <[hidden email]> ---
Not sure if helpful to say "me too", but this has been a bug in the last few
4.x versions for me as well on Windows 8.1. It is still happening in 4.9.0.
I'll try attach a backtrace to this ticket.

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[aidan-2]

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--- Comment #15 from aidan <[hidden email]> ---
Created attachment 91937
  --> https://bugs.kde.org/attachment.cgi?id=91937&action=edit
Backtrace for crash when clicking Import>Card Readers>(Any USB stick)

Backtrace for crash when clicking Import>Card Readers>(Any USB stick)

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

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--- Comment #16 from Gilles Caulier <[hidden email]> ---
*** Bug 342673 has been marked as a duplicate of this bug. ***

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[Gilles Caulier-4]

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Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|4.7.0                       |4.9.0

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