catch bad_alloc exception when filling the attribute table

git-svn-id: http://svn.osgeo.org/qgis/trunk@7701 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: mhugent

src/app/legend/qgslegendlayerfile.cpp

@@ -260,7 +260,14 @@ void QgsLegendLayerFile::table()
       }
 
     mTableDisplay = new QgsAttributeTableDisplay(vlayer, app);
-    mTableDisplay->table()->fillTable(vlayer);
+    try
+      {
+	mTableDisplay->table()->fillTable(vlayer);
+      }
+    catch(std::bad_alloc& ba)
+      {
+	QMessageBox::critical(0, tr("bad_alloc exception"), tr("Filling the attribute table has been stopped because there was no more virtual memory left"));
+      }
     mTableDisplay->table()->setSorting(true);
 
     connect(mTableDisplay, SIGNAL(deleted()), this, SLOT(invalidateTableDisplay()));