This smart pointer similar to auto_ptr

member_ptr is from cryptoPP library. Use it to avoid some issue: weidai11/cryptopp#48.

memeber_ptr.h

@@ -0,0 +1,77 @@
+#ifndef SMARTPTR_MEMBER_H
+#define SMARTPTR_MEMBER_H
+
+/// \brief Pointer that overloads operator ->
+/// \tparam T class or type
+/// \details member_ptr is used frequently in the library to avoid the issues related to
+///   std::auto_ptr in C++11 (deprecated) and std::unique_ptr in C++03 (non-existent).
+/// \bug <a href="http://github.com/weidai11/cryptopp/issues/48">Issue 48: "Use of auto_ptr causes dirty compile under C++11"</a>
+
+template <class T> class member_ptr
+{
+public:
+	explicit member_ptr(T *p = NULLPTR) : m_p(p) 
+	{
+	}
+
+	~member_ptr();
+
+	const T& operator*() const 
+	{ 
+		return *m_p; 
+	}
+
+	T& operator*() 
+	{ 
+		return *m_p; 
+	}
+
+	const T* operator->() const 
+	{ 
+		return m_p; 
+	}
+
+	T* operator->() 
+	{ 
+		return m_p; 
+	}
+
+	const T* get() const 
+	{ 
+		return m_p; 
+	}
+
+	T* get() 
+	{ 
+		return m_p; 
+	}
+
+	T* release()
+	{
+		T *old_p = m_p;
+		m_p = NULLPTR;
+		return old_p;
+	}
+
+	void reset(T *p = 0);
+
+protected:
+	member_ptr(const member_ptr<T>& rhs);		// copy not allowed
+	void operator=(const member_ptr<T>& rhs);	// assignment not allowed
+
+	T *m_p;
+};
+
+template <class T> 
+member_ptr<T>::~member_ptr() 
+{
+	delete m_p;
+}
+
+template <class T> 
+void member_ptr<T>::reset(T *p) 
+{
+	delete m_p; m_p = p;
+}
+
+#endif//SMARTPTR_MEMBER_H