add ns3::Ptr<T>::operator * with a few tests

src/core/ptr.cc

@@ -32,6 +32,7 @@ class NoCount
 public:
   NoCount (Callback<void> cb);
   ~NoCount ();
+  void Nothing () const;
 private:
   Callback<void> m_cb;
 };
@@ -42,6 +43,9 @@ NoCount::~NoCount ()
 {
   m_cb ();
 }
+void
+NoCount::Nothing () const
+{}
 
 class PtrTest : Test
 {
@@ -244,6 +248,20 @@ PtrTest::RunTests (void)
       }
     delete raw;
   }
+
+
+  m_nDestroyed = 0;
+  {
+    Ptr<NoCount> p = new NoCount (cb);
+    NoCount const&v1 = *p;
+    NoCount v2 = *p;
+    v1.Nothing ();
+    v2.Nothing ();
+  }
+  if (m_nDestroyed != 2)
+    {
+      ok = false;
+    }
   
 
   return ok;

src/core/ptr.h

@@ -75,6 +75,7 @@ public:
   Ptr (Ptr<U> const &o);
   ~Ptr () ;
   Ptr<T> &operator = (Ptr const& o);
+  T const& operator * () const;
   T *operator -> () const;
   T *operator -> ();
   // allow if (!sp)
@@ -202,6 +203,13 @@ Ptr<T>::operator = (Ptr const& o)
   return *this;
 }
 
+template <typename T>
+T const& 
+Ptr<T>::operator * () const
+{
+  return *m_ptr;
+}
+
 template <typename T>
 T *
 Ptr<T>::operator -> ()