FIX: C2300 on Explicit Destructor Call in Class Template

The information in this article applies to:

• The Microsoft C/C++ Compiler (CL.EXE), included with: Microsoft Visual C++, 32-bit Edition, versions 2.0 and 2.1

SYMPTOMS

A class template that makes an explicit call to destructor through a pointer of the template argument <type_name> generates the following error if the class template is instantiated with a class type:

   error C2300: 'MyClass' : class does not have a destructor called '~Item'

RESOLUTION

You can work around this problem by using the scope resolution operator (::) when calling the destructor:

   cpR->Item::~Item();

Also, this syntax can cause problems if the template is instantiated with a simple type. See the "References" section of this article for more information.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This problem was fixed in Microsoft Visual C++, 32-bit Edition, version 4.0.

MORE INFORMATION

Sample Code to Demonstrate Problem

// Compile options needed: none

   public:
   void funcX();
   Item* cpR;

template<class Item>

void classX<Item>::funcX() {
   cpR->~Item();

class MyClass {

   public:
   ~MyClass() {};

template classX<MyClass>;

REFERENCES

For more information, please see the following article in the Microsoft Knowledge Base:

   ARTICLE-ID: Q130546
   TITLE     : BUG: C2227 & C2653 on Explicit Destructor Call in Template