disable concat in hsql and enable it in FunctionForVoltDB, and test case...

...s
When I follow your link and search for "scoped_array" I only find one use case -- and it is using the SECOND pattern -- the one I am recommending:

        //  test scoped_array with a build-in type
        char * sap = new char [ 100 ];
        boost::scoped_array<char> sa ( sap );
        BOOST_TEST( sa.get() == sap );
        BOOST_TEST( sap == sa.get() );