D7056: Fix bug #378513: akregator crash on session restore

Tue Aug 1 22:50:57 BST 2017

mtijink added a comment.

  Sorry, seems I did not test thorougly enough: akregator does not crash on startup anymore, but crashes elsewhere later on. When I click on a feed, I get the following backtrace:

    #0  0x00007f1b49ced358 in KActionCollection::action(QString const&) const ()
       from /usr/lib/libKF5XmlGui.so.5
    #1  0x00007f1b11006678 in Akregator::ActionManagerImpl::action (
        this=0x10073b320, name=...)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/actions/actionmanagerimpl.cpp:639
    #2  0x00007f1b11006a22 in Akregator::ActionManagerImpl::setArticleActionsEnabled (this=0x10073b320, enabled=false)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/actions/actionmanagerimpl.cpp:646
    #3  0x00007f1b4a9d3b01 in Akregator::ArticleViewerWidget::setArticleActionsEnabled (this=0x100773870, enabled=false)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/articleviewerwidget.cpp:417
    #4  0x00007f1b4a9d2705 in Akregator::ArticleViewerWidget::slotShowSummary (
        this=0x100773870, node=0x100c0de50)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/articleviewerwidget.cpp:194
    #5  0x00007f1b11030e46 in Akregator::MainWidget::slotNodeSelected (
        this=0x100779cc0, node=0x100c0de50)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/mainwidget.cpp:696
    #6  0x00007f1b11039da9 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<Akregator::TreeNode*>, void, void (Akregator::MainWidget::*)(Akregator::TreeNode*)>::call (f=
        (void (Akregator::MainWidget::*)(Akregator::MainWidget * const, Akregator::TreeNode *)) 0x7f1b11030d04 <Akregator::MainWidget::slotNodeSelected(Akregator::TreeNode*)>, o=0x100779cc0, arg=0x7fffffffc6d0)
        at /usr/include/qt/QtCore/qobjectdefs_impl.h:136
    #7  0x00007f1b110394e3 in QtPrivate::FunctionPointer<void (Akregator::MainWidget::*)(Akregator::TreeNode*)>::call<QtPrivate::List<Akregator::TreeNode*>, void>
        (f=
        (void (Akregator::MainWidget::*)(Akregator::MainWidget * const, Akregator::TreeNode *)) 0x7f1b11030d04 <Akregator::MainWidget::slotNodeSelected(Akregator::TreeNode*)>, o=0x100779cc0, arg=0x7fffffffc6d0)
        at /usr/include/qt/QtCore/qobjectdefs_impl.h:169
    #8  0x00007f1b11038545 in QtPrivate::QSlotObject<void (Akregator::MainWidget::*)(Akregator::TreeNode*), QtPrivate::List<Akregator::TreeNode*>, void>::impl (
        which=1, this_=0x1007df310, r=0x100779cc0, a=0x7fffffffc6d0, ret=0x0)
        at /usr/include/qt/QtCore/qobject_impl.h:120
    #9  0x00007f1b45a0f8af in QMetaObject::activate(QObject*, int, int, void**) ()
       from /usr/lib/libQt5Core.so.5
    #10 0x00007f1b110421de in Akregator::AbstractSelectionController::currentSubscriptionChanged (this=0x1007a34d0, _t1=0x100c0de50)
        at /home/matthijs/kde/kdesrc/build/kde/pim/akregator/src/akregatorpart_autogen/EWIEGA46WW/moc_abstractselectioncontroller.cpp:173
    #11 0x00007f1b10ff504e in Akregator::SelectionController::selectedSubscriptionChanged (this=0x1007a34d0, index=...)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/selectioncontroller.cpp:257
    #12 0x00007f1b10ff7533 in QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<QModelIndex const&>, void, void (Akregator::SelectionController::*)(QModelIndex const&)>::call (f=
        (void (Akregator::SelectionController::*)(Akregator::SelectionController * const, const QModelIndex &)) 0x7f1b10ff4f4a <Akregator::SelectionController::selectedSubscriptionChanged(QModelIndex const&)>, o=0x1007a34d0, 
        arg=0x7fffffffc940) at /usr/include/qt/QtCore/qobjectdefs_impl.h:136
    #13 0x00007f1b10ff71af in QtPrivate::FunctionPointer<void (Akregator::SelectionController::*)(QModelIndex const&)>::call<QtPrivate::List<QModelIndex const&>, void> (f=
        (void (Akregator::SelectionController::*)(Akregator::SelectionController * const, const QModelIndex &)) 0x7f1b10ff4f4a <Akregator::SelectionController::selectedSubscriptionChanged(QModelIndex const&)>, o=0x1007a34d0, 
        arg=0x7fffffffc940) at /usr/include/qt/QtCore/qobjectdefs_impl.h:169
    #14 0x00007f1b10ff6bfd in QtPrivate::QSlotObject<void (Akregator::SelectionController::*)(QModelIndex const&), QtPrivate::List<QModelIndex const&>, void>::impl
        (which=1, this_=0x101867300, r=0x1007a34d0, a=0x7fffffffc940, ret=0x0)
        at /usr/include/qt/QtCore/qobject_impl.h:120
    #15 0x00007f1b45a0f8af in QMetaObject::activate(QObject*, int, int, void**) ()
       from /usr/lib/libQt5Core.so.5
    #16 0x00007f1b4598b0bb in QItemSelectionModel::currentChanged(QModelIndex const&, QModelIndex const&) () from /usr/lib/libQt5Core.so.5
    #17 0x00007f1b4598b3b5 in QItemSelectionModel::setCurrentIndex(QModelIndex const&, QFlags<QItemSelectionModel::SelectionFlag>) () from /usr/lib/libQt5Core.so.5
    #18 0x00007f1b469602ee in QAbstractItemView::mousePressEvent(QMouseEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #19 0x00007f1b469a487c in QTreeView::mousePressEvent(QMouseEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #20 0x00007f1b467496ef in QWidget::event(QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #21 0x00007f1b4682c60f in QFrame::event(QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #22 0x00007f1b469654a4 in QAbstractItemView::viewportEvent(QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #23 0x00007f1b469a42bd in QTreeView::viewportEvent(QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #24 0x00007f1b459df89c in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQt5Core.so.5
    #25 0x00007f1b46706e28 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
        () from /usr/lib/libQt5Widgets.so.5
    #26 0x00007f1b4670eea1 in QApplication::notify(QObject*, QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #27 0x00007f1b459dfbd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
        () from /usr/lib/libQt5Core.so.5
    #28 0x00007f1b4670de2a in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
       from /usr/lib/libQt5Widgets.so.5
    #29 0x00007f1b46763f51 in ?? () from /usr/lib/libQt5Widgets.so.5
    #30 0x00007f1b46766691 in ?? () from /usr/lib/libQt5Widgets.so.5
    #31 0x00007f1b46706e4c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
        () from /usr/lib/libQt5Widgets.so.5
    #32 0x00007f1b4670e926 in QApplication::notify(QObject*, QEvent*) ()
       from /usr/lib/libQt5Widgets.so.5
    #33 0x00007f1b459dfbd0 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
        () from /usr/lib/libQt5Core.so.5
    #34 0x00007f1b45f421e4 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /usr/lib/libQt5Gui.so.5
    #35 0x00007f1b45f43d46 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /usr/lib/libQt5Gui.so.5
    #36 0x00007f1b45f1b4ac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Gui.so.5
    #37 0x00007f1b1d7cacc1 in ?? () from /usr/lib/libQt5XcbQpa.so.5
    #38 0x00007f1b34572a57 in g_main_context_dispatch ()
       from /usr/lib/libglib-2.0.so.0
    #39 0x00007f1b34572c88 in ?? () from /usr/lib/libglib-2.0.so.0
    #40 0x00007f1b34572d1c in g_main_context_iteration ()
       from /usr/lib/libglib-2.0.so.0
    #41 0x00007f1b45a3a061 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
    #42 0x00007f1b459ddffb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQt5Core.so.5
    #43 0x00007f1b459e7048 in QCoreApplication::exec() ()
       from /usr/lib/libQt5Core.so.5
    #44 0x0000000100009e52 in main (argc=1, argv=0x7fffffffdac8)
        at /home/matthijs/kde/kdesrc/kde/pim/akregator/src/main.cpp:124

  I'm not exactly an expert on akregator code, so maybe someone here can help me figure this out?

REPOSITORY
  R201 Akregator

REVISION DETAIL
  https://phabricator.kde.org/D7056

To: mtijink, #kde_pim
Cc: #kde_pim, dvasin, winterz, vkrause, mlaurent, knauss, dvratil
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