ass

ptrtest.cpp

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+#include <memory>
+#include <iostream>
+
+#define GenPrint(name) \
+    name() {std::cout <<     #name "()\n";} \
+   ~name() {std::cout << "~" #name "()\n";}
+
+class Base                  {public: GenPrint(Base)};
+class A                     {public: GenPrint(A) std::shared_ptr<Base> base;};
+class Derived : public Base {public: GenPrint(Derived)};
+
+int main() {A a; a.base.reset(new Derived());}
+

ptrtest2.cpp

@@ -0,0 +1,13 @@
+#include <memory>
+#include <iostream>
+
+#define GenPrint(name) \
+            name() {std::cout <<     #name "()\n";} \
+   virtual ~name() {std::cout << "~" #name "()\n";}
+
+class Base                  {public: GenPrint(Base)};
+class A                     {public: GenPrint(A) std::unique_ptr<Base> base;};
+class Derived : public Base {public: GenPrint(Derived)};
+
+int main() {A a; a.base.reset(new Derived());}
+