1 files changed, 6 insertions, 1 deletions

diff --git a/c++-qt/src/null.cpp b/c++-qt/src/null.cpp
index 8bc87a6..5e3a19c 100644
--- a/c++-qt/src/null.cpp
+++ b/c++-qt/src/null.cpp
@@ -27,9 +27,14 @@ void Gats::Null::write( QIODevice &rOut ) const
     rOut.write("n", 1 );
 }
 
-void Gats::Null::read( QIODevice &rIn, char cType )
+void Gats::Null::read( QIODevice & /*rIn*/, char /*cType*/ )
 {
 }
+
+QString Gats::Null::toString( int /*iIndent*/ ) const
+{
+    return "null";
+}
 /*
 Bu::Formatter &operator<<( Bu::Formatter &f, const Gats::Null &b )
 {