Article: Q122300
Product(s): Microsoft C Compiler
Version(s): 2.0,6.0
Operating System(s):
Keyword(s): kbCompiler kbCPPonly kbVCkbbuglist kbfixlist
Last Modified: 24-JUN-2002
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The information in this article applies to:
- Microsoft Visual C++, 32-bit Editions, versions 2.0, 6.0
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SYMPTOMS
========
Compiling the code that uses a class declaration with a typedef of itself, as
demonstrated by the sample code in the More Information section, produces this
error:
fatal error C1001: INTERNAL COMPILER ERROR
(compiler file 'msc1.cpp', line 1056)
Please choose the Technical Support command on the Visual C++ Help menu, or
open the Technical Support help file for more information
RESOLUTION
==========
Use a forward declaration for the class, and place the typedef line before the
class declaration:
class A;
typedef A B;
Alternatively, enclose the returned typedef name in parentheses to indicate that
the constructor is used to return the value (see AltRetB in the sample code).
STATUS
======
Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem was corrected in Microsoft Visual C++,
32-bit Edition, version 4.0.
MORE INFORMATION
================
Sample Code
-----------
/* Compile options needed: none
*/
class A
{
typedef A B;
B RetB() { return B(*this); } // this causes the error
B AltRetB() { return (B)(*this); } // this line is OK
};
Additional query words: 2.00 9.00 buglist2.00
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Keywords : kbCompiler kbCPPonly kbVC kbbuglist kbfixlist
Technology : kbVCsearch kbAudDeveloper kbVC600 kbVC200 kbVC32bitSearch
Version : :2.0,6.0
Issue type : kbbug
Solution Type : kbfix
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