Crash when trying to merge features

[qgib]

Author Name: Antoine Lafranchis (@alafr)
Original Redmine Issue: 19119
Affected QGIS version: 3.0.3
Redmine category:digitising

---

User Feedback

The merge selected features function in the advanced digitizing toolbar doesn't work.
It only happens with the style as in the attached project: the features of the same geopackage layer can be merged without any issue on a new project. However when I copy paste the style from the original project, merging features becomes impossible and QGis crashes instead.

Report Details

Crash ID: e86cd1145d8e698f9ae305df1d7291f3bc38677e

Stack Trace

QgsMergeAttributesDialog::featureAttribute :
QgsMergeAttributesDialog::refreshMergedValue :
QgsMergeAttributesDialog::createTableWidgetContents :
QgsMergeAttributesDialog::QgsMergeAttributesDialog :
QgisApp::mergeSelectedFeatures :
QMetaObject::activate :
QAction::activate :
QAbstractButton::click :
QAbstractButton::mouseReleaseEvent :
QToolButton::mouseReleaseEvent :
QWidget::event :
QApplicationPrivate::notify_helper :
QApplication::notify :
QgsApplication::notify :
QCoreApplication::notifyInternal2 :
QApplicationPrivate::sendMouseEvent :
QSizePolicy::QSizePolicy :
QSizePolicy::QSizePolicy :
QApplicationPrivate::notify_helper :
QApplication::notify :
QgsApplication::notify :
QCoreApplication::notifyInternal2 :
QGuiApplicationPrivate::processMouseEvent :
QWindowSystemInterface::sendWindowSystemEvents :
QEventDispatcherWin32::processEvents :
CallWindowProcW :
DispatchMessageW :
QEventDispatcherWin32::processEvents :
qt_plugin_query_metadata :
QEventLoop::exec :
QCoreApplication::exec :
main :
BaseThreadInitThunk :
RtlUserThreadStart :

QGIS Info
QGIS Version: 3.0.3-Girona
QGIS code revision: 8a899c8
Compiled against Qt: 5.9.2
Running against Qt: 5.9.2
Compiled against GDAL: 2.2.4
Running against GDAL: 2.2.4

System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.15063

---

• merge test.qgs (Antoine Lafranchis)
• merge test.gpkg (Antoine Lafranchis)
• merge bug screenshot.png (Antoine Lafranchis)

[qgib]

Author Name: Nyall Dawson (@nyalldawson)

---

Applied in changeset 71f3aaf.

---

• done_ratio was changed from 0 to 100
• status_id was changed from Open to Closed