gistfile1.diff

diff --git a/src/providers/memory/qgsmemoryfeatureiterator.cpp b/src/providers/memory/qgsmemoryfeatureiterator.cpp
index 0e23f97..24fba43 100644
--- a/src/providers/memory/qgsmemoryfeatureiterator.cpp
+++ b/src/providers/memory/qgsmemoryfeatureiterator.cpp
@@ -106,6 +106,8 @@ bool QgsMemoryFeatureIterator::nextFeatureUsingList( QgsFeature& feature )
   if ( hasFeature )
   {
     feature = P->mFeatures[*mFeatureIdListIterator];
+    if( !feature.fields() )
+      feature.setFields( &P->mFields ); // allow name-based attribute lookups
     mFeatureIdListIterator++;
   }
   else