FIX: C2227 & C2653 on Explicit Destructor Call in Template

Last reviewed: September 18, 1997
Article ID: Q130546
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, 2.1

SYMPTOMS

Compiling a program that includes a class template that makes an explicit reference to the destructor of the template argument <type_name> generates the following errors if the class template is instantiated with a simple type:

   error C2227: left of '->type_name' must point to class/struct/union
   error C2653: 'type_name' : is not a class name

RESOLUTION

The Annotated C++ Reference Manual (Jan '94), section 12.4 contains the following example:

   int* p;
   / ...
   p->int::~int();

But this syntax is not supported by Visual C++, even through a typeddef or template type. The only workaround is to remove the explicit call to the destructor.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug was corrected in Visual C++ version 4.0.

MORE INFORMATION

Sample Code to Demonstrate Problem

   // Compile options needed: none
   template<class Item>
   class classX {
      public:
      void funcX();
      Item* cpR;
   };

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

   template classX<int>;

REFERENCES

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

   ARTICLE-ID: Q129132
   TITLE     : BUG: Can't Use Simple Type in Explicit Call of a Destructor

   ARTICLE-ID: Q130547
   TITLE     : BUG: C2300 on Explicit Destructor Call in Class Template


Additional query words: 9.00 9.10 Intrinsic

Keywords : CPPIss vcfixlist400
Version : 2.0 2.1
Platform : NT WINDOWS
Issue type : kbbug
Solution Type : kbfix


THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: September 18, 1997
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.