Article: Q102367
Product(s): Microsoft Programming Utilities
Version(s): 4.0,4.01,4.05,4.1; WINDOWS:1.0
Operating System(s):
Keyword(s): kb16bitonly
Last Modified: 08-NOV-2001
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The information in this article applies to:
- Microsoft CodeView for MS-DOS, versions 4.0, 4.01, 4.05, 4.1
- Microsoft CodeView for Windows, versions 4.0, 4.01, 4.1
- Microsoft Visual Workbench for Windows, version 1.0
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SYMPTOMS
========
An attempt to display a variable in the Locals, QuickWatch, or Watch windows
fails and CodeView or Visual Workbench displays the following message:
CXX0030 : Error : expression cannot be evaluated
CAUSE
=====
The application uses a type-defined enumerated bitfield in a class type and the
user attempts to display the value of a variable of that type. The CXX0030 error
may not occur if you do not attempt to display it.
STATUS
======
Microsoft has confirmed this to be a problem in CodeView versions 4.0x and 4.1
for MS-DOS and Windows and in Visual Workbench version 1.0 for Windows.
This is not a problem in CodeView version 4.25 for Win32s.
MORE INFORMATION
================
The following code example demonstrates this problem.
Sample Code
-----------
/*
* Compiler options needed: /Zi /Od /f-
*/
#include <iostream.h>
typedef enum
{
T1
} TENUM;
class TEST
{
public:
TEST();
TENUM linkstate:8;
};
TEST::TEST()
{
linkstate = T1;
}
TEST *port;
void main(void)
{
port = new TEST;
// NOTE: Must refer to linkstate for CXX0033 error to occur.
port->linkstate;
delete port;
}
Additional query words: 4.00 4.10
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Keywords : kb16bitonly
Technology : kbVSsearch kbAudDeveloper _IKkbbogus kbCodeView kbSDKSearch kbZNotKeyword3 kbWinSDKSearch kbCodeView400DOS kbCodeView401DOS kbCodeView405DOS kbCodeView410DOS kbCodeView400 kbCodeView401 kbCodeView410 kbVWB
Version : :4.0,4.01,4.05,4.1; WINDOWS:1.0
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