Use override specifier for EquivBlueprint destructor.
@@ -18,7 +18,7 @@ private:
public:
EquivBlueprint(const FieldSpecBaseList &fields, fef::MatchDataLayout subtree_mdl);
- virtual ~EquivBlueprint();
+ ~EquivBlueprint() override;
// used by create visitor
EquivBlueprint& addTerm(Blueprint::UP term, double exactness);
