After starting Digikam, selecting the app to go into full screen mode crashes it. Reproducible: Always Steps to Reproduce: 1. Start app 2. Click button "Full Screen" in main tool bar. Actual Results: App crashes Expected Results: App to go into full screen mode. Compiled from sources, latest commit in core master: 7fb769c27cf48408cf45cad65ba4330940663c05 Stack trace: ========== Thread 1 "digikam" received signal SIGSEGV, Segmentation fault. 0x00007ffff5496a45 in QAction::setEnabled(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 (gdb) bt #0 0x00007ffff5496a45 in QAction::setEnabled(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #1 0x00007ffff752d37e in Digikam::DigikamApp::customizedFullScreenMode (this=0x9040c0, set=true) at /home/krikar/dev/kde/digikam/core/app/main/digikamapp.cpp:3174 #2 0x00007ffff68487ae in Digikam::DXmlGuiWindow::slotToggleFullScreen (this=0x9040c0, set=true) at /home/krikar/dev/kde/digikam/core/libs/widgets/mainview/dxmlguiwindow.cpp:388 #3 0x00007ffff6923793 in Digikam::DXmlGuiWindow::qt_static_metacall (_o=0x9040c0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7fffffffc750) at /home/krikar/dev/kde/digikam/build/core/libs/widgets/moc_dxmlguiwindow.cpp:144 #4 0x00007ffff4b96a00 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #5 0x00007ffff5493f72 in QAction::toggled(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #6 0x00007ffff54968ae in QAction::setChecked(bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #7 0x00007ffff54969ec in QAction::activate(QAction::ActionEvent) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #8 0x00007ffff55983f0 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #9 0x00007ffff5598524 in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #10 0x00007ffff565fb3a in QToolButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #11 0x00007ffff54e15d8 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #12 0x00007ffff565fc19 in QToolButton::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #13 0x00007ffff549d1dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #14 0x00007ffff54a2bc1 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #15 0x00007ffff4b6a3d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #16 0x00007ffff54a1995 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #17 0x00007ffff54fb3d9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #18 0x00007ffff54fd92b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #19 0x00007ffff549d1dc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #20 0x00007ffff54a2446 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5 #21 0x00007ffff4b6a3d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #22 0x00007ffff4eb94c0 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #23 0x00007ffff4ebb055 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #24 0x00007ffff4e9830b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 #25 0x00007fffd74e5780 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5 ---Type <return> to continue, or q <return> to quit--- #26 0x00007fffea5d91a7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #27 0x00007fffea5d9400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #28 0x00007fffea5d94ac in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0 #29 0x00007ffff4bbf48f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #30 0x00007ffff4b6815a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #31 0x00007ffff4b7081c in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 #32 0x0000000000406f22 in main (argc=1, argv=0x7fffffffdc48) at /home/krikar/dev/kde/digikam/core/app/main/main.cpp:252 (gdb)
Version of: - QT 5.6.0 - KDE Frameworks: 5.22.0 - Plasma version: 5.6.90 Running unstable PPA from: https://neon.kde.org/, [deb http://archive.neon.kde.org/unstable xenial main]
It looks like it crashes because DXmlGuiWindow::statusBarMenuAction() returns 0. See: https://github.com/KDE/digikam/blob/757374978a7a79c83e48641d12bf89cb9c334a18/libs/widgets/mainview/dxmlguiwindow.cpp#L644
Git commit 9463b3d9262e7a72b567d3851b2cd14c0a5f5089 by Gilles Caulier. Committed on 04/06/2016 at 15:53. Pushed by cgilles into branch 'master'. prevent a crash if returned status Bar Menu Action is null FIXED-IN:5.0.0 M +3 -1 app/main/digikamapp.cpp M +2 -0 libs/widgets/mainview/dxmlguiwindow.cpp M +3 -1 utilities/imageeditor/editor/editorwindow.cpp M +3 -1 utilities/importui/main/importui.cpp M +3 -1 utilities/lighttable/lighttablewindow.cpp M +3 -1 utilities/queuemanager/main/queuemgrwindow.cpp http://commits.kde.org/digikam/9463b3d9262e7a72b567d3851b2cd14c0a5f5089
I can confirm the fix. Thanx for the quick resolution.