Exporting GRASS vector (save as...) crashes QGIS

[gioman]

QGIS 3.10/14/master on Windows and Linux:

Add a GRASS vector (i.e. from the GRASS sample dataset) to the project and try to export it via "save as...", QGIS crashes.

[Posillo1812]

Same problem with 3.10.8 on Windows 10

Crash ID: 379510646eceecd65d21dd316151f69b9b573145

Stack Trace

QTextCodec::toUnicode :
QgsGrassFeatureIterator::setFeatureAttributes qgsgrassfeatureiterator.cpp:711
QgsGrassFeatureIterator::fetchFeature qgsgrassfeatureiterator.cpp:504
QgsAbstractFeatureIterator::nextFeature qgsfeatureiterator.cpp:63
QgsVectorLayerFeatureIterator::fetchFeature qgsvectorlayerfeatureiterator.cpp:416
QgsAbstractFeatureIterator::nextFeature qgsfeatureiterator.cpp:63
QgsVectorFileWriter::writeAsVectorFormatV2 qgsvectorfilewriter.cpp:3051
QgsVectorFileWriterTask::run qgsvectorfilewritertask.cpp:61
QgsTask::start qgstaskmanager.cpp:78
QThreadPoolPrivate::reset :
QThread::start :
BaseThreadInitThunk :
RtlUserThreadStart :




QGIS Info
QGIS Version: 3.10.8-A Coru�a
QGIS code revision: d09a4f2388
Compiled against Qt: 5.11.2
Running against Qt: 5.11.2
Compiled against GDAL: 3.0.4
Running against GDAL: 3.0.4



System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.18362

[PeterPetrik]

crashes on MacOS too

[PeterPetrik]

looks like QgsGrassProvider::textEncoding() returns 0x0 and I cannot find a place where it is ever set.