QGIS » QGIS Application

You wouldn't have a trace ready by any chance?

Thread 1 "qgis" received signal SIGSEGV, Segmentation fault.
0x00007ffff1fd12e9 in QgsAttributeFormEditorWidget::setConstraintResultVisible (this=0x0, editable=false)
    at /home/hme/src/QGIS/src/gui/qgsattributeformeditorwidget.cpp:114
114      mConstraintResultLabel->setHidden( !editable );
(gdb) bt
#0  0x00007ffff1fd12e9 in QgsAttributeFormEditorWidget::setConstraintResultVisible (this=0x0, editable=false)
    at /home/hme/src/QGIS/src/gui/qgsattributeformeditorwidget.cpp:114
#1  0x00007ffff1fbdf5c in QgsAttributeForm::synchronizeEnabledState (this=0x306c0d0) at /home/hme/src/QGIS/src/gui/qgsattributeform.cpp:983
#2  0x00007ffff1fb96de in QgsAttributeForm::setFeature (this=0x306c0d0, feature=...) at /home/hme/src/QGIS/src/gui/qgsattributeform.cpp:243
#3  0x00007ffff1fb862f in QgsAttributeForm::QgsAttributeForm (this=0x306c0d0, vl=0x3098800, feature=..., context=..., parent=0x327ce00)
    at /home/hme/src/QGIS/src/gui/qgsattributeform.cpp:72
#4  0x00007ffff1fb7622 in QgsAttributeDialog::init (this=0x327ce00, layer=0x3098800, feature=0x2f61450, context=..., showDialogButtons=true)
    at /home/hme/src/QGIS/src/gui/qgsattributedialog.cpp:97
#5  0x00007ffff1fb6e88 in QgsAttributeDialog::QgsAttributeDialog (this=0x327ce00, vl=0x3098800, thepFeature=0x2f61450, featureOwner=true, parent=0x2f76f90, 
    showDialogButtons=true, context=...) at /home/hme/src/QGIS/src/gui/qgsattributedialog.cpp:30
#6  0x00007ffff720a170 in QgsFeatureAction::newDialog (this=0x7fffffffba80, cloneFeature=true) at /home/hme/src/QGIS/src/app/qgsfeatureaction.cpp:67
#7  0x00007ffff720ab4f in QgsFeatureAction::viewFeatureForm (this=0x7fffffffba80, h=0x3048680) at /home/hme/src/QGIS/src/app/qgsfeatureaction.cpp:115
#8  0x00007ffff71fcaf5 in QgsIdentifyResultsDialog::featureForm (this=0x2f76f90) at /home/hme/src/QGIS/src/app/qgsidentifyresultsdialog.cpp:1693
#9  0x00007ffff71f6ee1 in QgsIdentifyResultsDialog::show (this=0x2f76f90) at /home/hme/src/QGIS/src/app/qgsidentifyresultsdialog.cpp:969
#10 0x00007ffff7283372 in QgsMapToolIdentifyAction::canvasReleaseEvent (this=0xf795f0, e=0x5a62770)
    at /home/hme/src/QGIS/src/app/qgsmaptoolidentifyaction.cpp:158
#11 0x00007ffff2106808 in QgsMapCanvas::mouseReleaseEvent (this=0xda7530, e=0x7fffffffc430) at /home/hme/src/QGIS/src/gui/qgsmapcanvas.cpp:1434
#12 0x00007ffff5487f88 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007ffff5586b4e in QFrame::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007ffff5796e93 in QGraphicsView::viewportEvent(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007ffff4b52172 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007ffff544503c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007ffff544ac19 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007ffff6016c7b in QgsApplication::notify (this=0x7fffffffd880, receiver=0xdbe7b0, event=0x7fffffffc430)
    at /home/hme/src/QGIS/src/core/qgsapplication.cpp:317
#19 0x00007ffff4b5238b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007ffff5449b32 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007ffff54a257b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007ffff54a4b3b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007ffff544505c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007ffff544a516 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007ffff6016c7b in QgsApplication::notify (this=0x7fffffffd880, receiver=0x2b283a0, event=0x7fffffffc8e0)
    at /home/hme/src/QGIS/src/core/qgsapplication.cpp:317
#26 0x00007ffff4b5238b in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007ffff4e944e1 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#28 0x00007ffff4e961a5 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#29 0x00007ffff4e79f08 in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
   from /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#30 0x00007fffd5b16060 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#31 0x00007fffec49e197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007fffec49e3f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fffec49e49c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ffff4ba87cf in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007ffff4b4fb4a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007ffff4b57bec in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00000000004135e0 in main (argc=3, argv=0x7fffffffdce8) at /home/hme/src/QGIS/src/app/main.cpp:1398

Thanks a lot,

https://github.com/qgis/QGIS/pull/5743 should fix it

Hmmm, in my case

"mFormEditorWidgets.value( eww->fieldIdx() )" is nullptr in QgsAttributeForm::synchronizeEnabledState

0x00007ffff1fd12e9 in QgsAttributeFormEditorWidget::setConstraintResultVisible (this=0x0, editable=false)

Silly me... Of course.