Crash after launching Field Calculator or Select Features with Expression

[qgib]

Author Name: Przemek Garasz (Przemek Garasz)
Original Redmine Issue: 21866
Affected QGIS version: 3.6.1
Redmine category:field_calculator

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Whenever I press "Field Calculator" icon or "Select Features with Expression", no matter main taskbar or inside a table, QGIS crashes. This started to happen after upgrade from 3.4 to 3.6. QGIS is installed through OSGeo4W on W10.

Crash ID: a5fd3076ee6820a3be41f0cfc69aa8f8653529e3

Stack Trace

QBitArray::QBitArray :
QgsVirtualLayerDefinition::SourceLayer::source :
QgsExpressionBuilderWidget::updateFunctionTree :
QgsExpressionBuilderWidget::QgsExpressionBuilderWidget :
QgsFieldCalculator::setPrecisionMinMax :
QgsFieldCalculator::QgsFieldCalculator :
QgisApp::fieldCalculator :
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: 3.6.1-Noosa
QGIS code revision: 2468226
Compiled against Qt: 5.11.2
Running against Qt: 5.11.2
Compiled against GDAL: 2.4.1
Running against GDAL: 2.4.1

System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.17134

[qgib]

Author Name: Giovanni Manghi (@gioman)

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Can you try with a new/clean qgis profile and no 3rd party plugins installed? thanks.

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• priority_id was changed from Normal to High
• category_id was changed from GUI to Field calculator

[qgib]

Author Name: Przemek Garasz (Przemek Garasz)

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Disabling the plugins alone helped. Then I enabled all the plugins one by one to see which one is it, and to my surprise, it turned out it's the Processing plugin.

A fresh profile does not crash with Processing enabled, so something must have gone corrupt in mine.

Thanks!

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• status_id was changed from Open to Closed