Bug 386063

digikam --version
Qt: 4.8.7
KDE Development Platform: 4.14.16
digiKam: 4.12.0

uname -a
Linux grisznak 4.10.0-37-generic #41~16.04.1-Ubuntu SMP Fri Oct 6 22:42:59 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

I use digikam from packages (digikam, digikam-dbg packages) on Lubuntu 16

I followed https://www.digikam.org/contribute/

Digikam crashes in "Configure where you keep your images and you will store database" on using "Open File Dialog"

with

mateusz@grisznak:~$ gdb digikam
GNU gdb (Ubuntu 7.11.1-0ubuntu1~16.5) 7.11.1
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Reading symbols from digikam...Reading symbols from /usr/lib/debug/.build-id/87/16a000655fbf79eeb0b6cd5f3c5b6c90ffb64a.debug...done.
done.
(gdb) catch throw
Catchpoint 1 (throw)
(gdb) run
Starting program: /usr/bin/digikam 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
(gdb) [New Thread 0x7fffd1fe6700 (LWP 25905)]
[New Thread 0x7fffccb23700 (LWP 25906)]
[New Thread 0x7fffcc322700 (LWP 25907)]
[New Thread 0x7fffcbb21700 (LWP 25908)]
[New Thread 0x7fffcb320700 (LWP 25909)]
Error: Can not create link from "/home/mateusz/.kde/cache-grisznak" to "/var/tmp/kdecache-mateusz"
Error: Can not create link from "/home/mateusz/.kde/cache-grisznak" to "/var/tmp/kdecache-mateuszTPG3Ee"
trying to create local folder /home/mateusz/.kde/cache-grisznak: Permission denied
[Thread 0x7fffd1fe6700 (LWP 25905) exited]
digikam(25879)/KSharedDataCache KSharedDataCache::Private::mapSharedMemory: Failed to establish shared memory mapping, will fallback to private memory -- memory usage will increase 
[Thread 0x7fffcb320700 (LWP 25909) exited]
Error: Can not create link from "/home/mateusz/.kde/tmp-grisznak" to "/tmp/kde-mateusz"
Error: Can not create link from "/home/mateusz/.kde/tmp-grisznak" to "/tmp/kde-mateuszaZwd8U"
trying to create local folder /home/mateusz/.kde/tmp-grisznak: Permission denied
[New Thread 0x7fffcb320700 (LWP 25916)]
Error: Can not create link from "/home/mateusz/.kde/socket-grisznak" to "/run/user/1000/ksocket-mateusz"
Error: Can not create link from "/home/mateusz/.kde/socket-grisznak" to "/run/user/1000/ksocket-mateuszXTnbol"
trying to create local folder /home/mateusz/.kde/socket-grisznak: Permission denied
Error: Can not create link from "/home/mateusz/.kde/tmp-grisznak" to "/tmp/kde-mateusz"
Error: Can not create link from "/home/mateusz/.kde/tmp-grisznak" to "/tmp/kde-mateusznLaCak"
trying to create local folder /home/mateusz/.kde/tmp-grisznak: Permission denied
kdeinit4: Aborting. bind() failed: No such file or directory
Could not bind to socket '/home/mateusz/.kde/socket-grisznak/kdeinit4__0'
trying to create local folder /home/mateusz/.kde/cache-grisznak: Permission denied
trying to create local folder /home/mateusz/.kde/share/kde4: Permission denied

Thread 1 "digikam" received signal SIGSEGV, Segmentation fault.
0x00007ffff408225d in KFileDialog::getExistingDirectory (startDir=..., parent=0x10d6fa0, caption=...) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/kio/kfile/kfiledialog.cpp:639
639	/build/kde4libs-_S4zyz/kde4libs-4.14.16/kio/kfile/kfiledialog.cpp: No such file or directory.
(gdb) bt
#0  0x00007ffff408225d in KFileDialog::getExistingDirectory (startDir=..., parent=0x10d6fa0, caption=...) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/kio/kfile/kfiledialog.cpp:639
#1  0x00007ffff40b9d25 in KUrlRequester::KUrlRequesterPrivate::_k_slotOpenDialog (this=0x111aca0) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/kio/kfile/kurlrequester.cpp:359
#2  0x00007ffff1d9f010 in QMetaObject::activate (sender=sender@entry=0x111cd70, m=m@entry=0x7ffff34faf60 <QAbstractButton::staticMetaObject>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7fffffffcaa0)
    at kernel/qobject.cpp:3567
#3  0x00007ffff3085d12 in QAbstractButton::clicked (this=this@entry=0x111cd70, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:219
#4  0x00007ffff2dbb2b3 in QAbstractButtonPrivate::emitClicked (this=this@entry=0x10dbae0) at widgets/qabstractbutton.cpp:548
#5  0x00007ffff2dbc664 in QAbstractButtonPrivate::click (this=this@entry=0x10dbae0) at widgets/qabstractbutton.cpp:541
#6  0x00007ffff2dbc774 in QAbstractButton::mouseReleaseEvent (this=0x111cd70, e=0x7fffffffd010) at widgets/qabstractbutton.cpp:1123
#7  0x00007ffff2a378d0 in QWidget::event (this=0x111cd70, event=0x7fffffffd010) at kernel/qwidget.cpp:8775
#8  0x00007ffff29e0fdc in QApplicationPrivate::notify_helper (this=this@entry=0xd0adc0, receiver=receiver@entry=0x111cd70, e=e@entry=0x7fffffffd010) at kernel/qapplication.cpp:4570
#9  0x00007ffff29e80d6 in QApplication::notify (this=this@entry=0x7fffffffdc10, receiver=receiver@entry=0x111cd70, e=e@entry=0x7fffffffd010) at kernel/qapplication.cpp:4113
#10 0x00007ffff374664a in KApplication::notify (this=0x7fffffffdc10, receiver=0x111cd70, event=0x7fffffffd010) at /build/kde4libs-_S4zyz/kde4libs-4.14.16/kdeui/kernel/kapplication.cpp:311
#11 0x00007ffff1d8a90d in QCoreApplication::notifyInternal (this=0x7fffffffdc10, receiver=receiver@entry=0x111cd70, event=event@entry=0x7fffffffd010) at kernel/qcoreapplication.cpp:955
#12 0x00007ffff29e76dd in QCoreApplication::sendEvent (event=<optimized out>, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#13 QApplicationPrivate::sendMouseEvent (receiver=receiver@entry=0x111cd70, event=event@entry=0x7fffffffd010, alienWidget=alienWidget@entry=0x111cd70, nativeWidget=nativeWidget@entry=0x7fffffffdcb0, 
    buttonDown=buttonDown@entry=0x7ffff350c368 <qt_button_down>, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3178
#14 0x00007ffff2a653f2 in QETWidget::translateMouseEvent (this=this@entry=0x7fffffffdcb0, event=event@entry=0x7fffffffd370) at kernel/qapplication_x11.cpp:4638
#15 0x00007ffff2a64c83 in QApplication::x11ProcessEvent (this=0x7fffffffdc10, event=event@entry=0x7fffffffd370) at kernel/qapplication_x11.cpp:3626
#16 0x00007ffff2a8e542 in x11EventSourceDispatch (s=0xd0cda0, callback=0x0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#17 0x00007fffeabc6197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007fffeabc63f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007fffeabc649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007ffff1dbb2ae in QEventDispatcherGlib::processEvents (this=0xd0c230, flags=...) at kernel/qeventdispatcher_glib.cpp:450
#21 0x00007ffff2a8e616 in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#22 0x00007ffff1d8918f in QEventLoop::processEvents (this=this@entry=0x7fffffffd760, flags=...) at kernel/qeventloop.cpp:149
#23 0x00007ffff1d894f5 in QEventLoop::exec (this=this@entry=0x7fffffffd760, flags=...) at kernel/qeventloop.cpp:204
#24 0x00007ffff2ec3a3c in QDialog::exec (this=this@entry=0x7fffffffdcb0) at dialogs/qdialog.cpp:562
#25 0x000000000049269b in main (argc=<optimized out>, argv=<optimized out>) at /build/digikam-J9prv3/digikam-4.12.0/core/app/main/main.cpp:153