Merge pull request #1464 from federicobond/warn-msgvalue

Warn about using msg.value in non-payable function

libsolidity/ast/Types.h

@@ -1117,6 +1117,8 @@ public:
 
 	virtual std::string toString(bool _short) const override;
 
+	Kind kind() const { return m_kind; }
+
 private:
 	Kind m_kind;
 };