[GRASS] fixed crash in add/delete column

src/providers/grass/qgsgrassprovider.cpp

@@ -561,7 +561,7 @@ void QgsGrassProvider::thaw()
 #endif
 }
 
-bool QgsGrassProvider::closeEdit( bool newMap )
+bool QgsGrassProvider::closeEdit( bool newMap, QgsVectorLayer *vectorLayer )
 {
   QgsDebugMsg( "entered" );
 
@@ -576,6 +576,10 @@ bool QgsGrassProvider::closeEdit( bool newMap )
   if ( mLayer->map()->closeEdit( newMap ) )
   {
     loadMapInfo();
+    if ( vectorLayer )
+    {
+      vectorLayer->updateFields();
+    }
     return true;
   }
   return false;
@@ -1005,6 +1009,9 @@ void QgsGrassProvider::startEditing( QgsVectorLayer *vectorLayer )
 
   connect( vectorLayer->undoStack(), SIGNAL( indexChanged( int ) ), this, SLOT( onUndoIndexChanged( int ) ) );
 
+  // let qgis know (attribute table etc.) that we added topo symbol field
+  vectorLayer->updateFields();
+
   QgsDebugMsg( "edit started" );
 }
 
@@ -1465,7 +1472,8 @@ void QgsGrassProvider::onBeforeRollBack()
 void QgsGrassProvider::onEditingStopped()
 {
   QgsDebugMsg( "entered" );
-  closeEdit( false );
+  QgsVectorLayer *vectorLayer = qobject_cast<QgsVectorLayer *>( sender() );
+  closeEdit( false, vectorLayer );
 }
 
 // -------------------------------------------------------------------------------

src/providers/grass/qgsgrassprovider.h

@@ -178,7 +178,7 @@ class GRASS_LIB_EXPORT QgsGrassProvider : public QgsVectorDataProvider
      *   @return true success
      *   @return false failed to close vector or vector was not in update mode
      */
-    bool closeEdit( bool newMap = false );
+    bool closeEdit( bool newMap = false, QgsVectorLayer *vectorLayer = 0 );
 
     /** Get current number of lines.
      *   @return number of lines