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Merge pull request #5552 from elpaso/vector_layer_safe_cast

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[bugfix] Prevent a bad crash when provider is wrong
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Alessandro Pasotti 2017-11-07 11:56:24 +01:00 committed by GitHub
commit a22e565dc2
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1 changed files with 1 additions and 5 deletions
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6
src/core/qgsvectorlayer.cpp
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@ -1530,12 +1530,8 @@ bool QgsVectorLayer::setDataProvider( QString const &provider )
dataSource = uri.uri( false );
}
// XXX when execution gets here.
//XXX - This was a dynamic cast but that kills the Windows
// version big-time with an abnormal termination error
delete mDataProvider;
mDataProvider = ( QgsVectorDataProvider * )( QgsProviderRegistry::instance()->createProvider( provider, dataSource ) );
mDataProvider = qobject_cast<QgsVectorDataProvider *>( QgsProviderRegistry::instance()->createProvider( provider, dataSource ) );
if ( !mDataProvider )
{
QgsDebugMsg( " unable to get data provider" );