cppcheck

src/OpenMesh/Core/System/mostream.hh

@@ -92,7 +92,7 @@ class multiplex_target : public basic_multiplex_target
 {
 public:
   explicit multiplex_target(T& _t) : target_(_t) {}
-  virtual void operator<<(const std::string& _s) { target_ << _s; }
+  virtual void operator<<(const std::string& _s) override { target_ << _s; }
 private:
   T& target_;
 };