DOCUMENT:Q128213  12-DEC-2001  [visualc]
TITLE   :FIX: C1001 Internal Compiler Error in MAIN.C File Line 374
PRODUCT :Microsoft C Compiler
PROD/VER::2.0,2.1,2.2
OPER/SYS:
KEYWORDS:kbCompiler kbCPPonly kbVCkbbuglist kbfixlist

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Visual C++, 32-bit Editions, versions 2.0, 2.1, 2.2 
-------------------------------------------------------------------------------

SYMPTOMS
========

Defining a static member function together with a user-defined class destructor
in a class that is used only as a return type of a member function in another
class may cause the Microsoft C++ compiler version 9.0 to generate the following
compiler error:

   fatal error C1001: INTERNAL COMPILER ERROR
   (compiler file 'd:\b_bld\c2.m2\p2\main.c', line 374)
   Please choose the Technical Support command on the Visual C++ Help menu, or
   open the Technical Support help file for more information

The sample code in the More Information section below demonstrates this problem.

RESOLUTION
==========

To work around the problem, use one of the following suggestions:

 - Instead of using the chain notation to call the static member function, break
   the statement into two statements. For example,

         b.GetClassA().problem(10);     // error

         a = b.GetClassA();             // work-around
         a.problem(10);

   where a is an instance of class A, b is an instance of class B based on the
   sample code below.

-or-

 - Define the static member function as a non-static member function.

-or-

 - Instead of returning object A for function GetClassA() in the following
   sample code, return a reference to A.

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 Microsoft Visual C++,
32-bit Edition, version 4.0.

MORE INFORMATION
================

The sample code below can be used to generate the C1001 error.

Sample Code
-----------

   /* Compile options needed: none
   */ 

   class A
   {
     public:
     ~A() {}
     static void problem(int a) {}
   };

   class B
   {
     public:
     A GetClassA();
   };

   void main()
   {
     B b;
     b.GetClassA().problem(10);
   }

Additional query words: 2.00 2.10 2.20 9.00 9.10

======================================================================
Keywords          : kbCompiler kbCPPonly kbVC kbbuglist kbfixlist
Technology        : kbVCsearch kbAudDeveloper kbVC220 kbVC200 kbVC210 kbVC32bitSearch
Version           : :2.0,2.1,2.2
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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