Add a virtual destructor.

2010-05-27 20:05:53 +00:00 · 2010-05-27 20:05:53 +00:00 · d9ba561934
commit d9ba561934
parent 61408ca8f0
1 changed files with 3 additions and 0 deletions
--- a/src/arrow.hpp
+++ b/src/arrow.hpp
@ -32,6 +32,9 @@
 */
 class arrow_observer {
  public:
+
+	virtual ~arrow_observer() {}
+
    virtual void arrow_changed(const arrow & a) = 0;

    virtual void arrow_deleted(const arrow & a) = 0;