GDAL provider: don't crash on invalid bands

qgis · Oct 13, 2020 · f4423aa · f4423aa
1 parent d4c963e
commit f4423aa
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/core/providers/gdal/qgsgdalprovider.cpp b/src/core/providers/gdal/qgsgdalprovider.cpp
@@ -1063,6 +1063,12 @@ QString QgsGdalProvider::generateBandName( int bandNumber ) const
   }
   QString generatedBandName = QgsRasterDataProvider::generateBandName( bandNumber );
   GDALRasterBandH myGdalBand = getBand( bandNumber );
+  if ( ! myGdalBand )
+  {
+    QgsLogger::warning( QStringLiteral( "Band %1 does not exist." ).arg( bandNumber ) );
+    return QString();
+  }
+
   QString gdalBandName( GDALGetDescription( myGdalBand ) );
   if ( !gdalBandName.isEmpty() )
   {