BUG: Function Defined in Local Class Causes C1001

The information in this article applies to:

• The Microsoft C/C++ Compiler (CL.EXE), included with:

      - Microsoft Visual C++ for Windows, version 1.5
  

SYMPTOMS

The code shown below will generate the following errors on computers running MS-DOS:

   error C2601: functions cannot be defined in local classes
   error C2517: 'C_char' : right of '::' is undefined
   error C2510: '' : left of '::' must be a class/struct/union
   error C2270: '.PAD' : modifiers not allowed on nonmember functions
   error C2065: 'storage' : undeclared identifier
   error C2440: 'return' : cannot convert from 'char __near *' to 'int '
   error C2618: '.PAD' : inconsistent return statement

On computers running Windows NT, the first two errors are generated by the, compiler, but the other errors are not. Instead, the following error is reported:

   fatal error C1001: internal compiler error
               (compiler file 'msc1.cpp', line 585)

RESOLUTION

To resolve the problem in the sample code below, declare zot as a global variable.

STATUS

Microsoft has confirmed this to be a problem with the C/C++ compiler for MS-DOS, version 8.0c. We are researching the problem and will post new information here as it becomes available.

This is not a problem with the 32-bit C/C++ compiler.

MORE INFORMATION

The following sample can be used to demonstrate this problem.

Sample Code

/* Compile options needed: none
*/

#include <iostream.h>

#define C(type) \
  class C_ ## type {  \
     void* storage;  \
   public: \
     operator type*() { return (type*)storage; }  \
  }

// uncomment the following line and comment the same line
// in f() to fix the problem

// C(char) zot;

void f()

   C(char) zot;

void main ( void )

   cout << "PASSED" << endl;