ostringstream should flush before returning buffer
ostringstream should flush before returning buffer

dgruss/ustl,Gerii/ustl,szastupov/ustl,Gerii/ustl,NoSuchProcess/ustl,dgruss/ustl,uusirant/ustl-cmake,NoSuchProcess/ustl,PetteriAimonen/ustl,PetteriAimonen/ustl,uusirant/ustl-cmake,msharov/ustl,msharov/ustl,szastupov/ustl,PetteriAimonen/ustl