Problems during Migration from VS 2003 to VS 2008

Question

I have converted one of my Visual studio 2003 projects into VS2008 and when trying to build the project in VS2008 I get the below mentioned error.

In oledb.h, I have

typedef LONG DBROWCOUNT;

and in sybdb.h, I have

#define DBROWCOUNT      16

When I compile, I get the following errors:

c:\program files\microsoft sdks\windows\v6.0a\include\oledb.h(633) : error C2143: syntax error : missing ';' before 'constant'
c:\program files\microsoft sdks\windows\v6.0a\include\oledb.h(633) : error C2059: syntax error : 'constant'
c:\program files\microsoft sdks\windows\v6.0a\include\oledb.h(3005) : error C2059: syntax error : 'constant'

If I comment the //#define DBROWCOUNT 16, then these errors are solved,but I am not supposed to make changes in code, so please help me to come over this error,thanks in advance.

Answer 1

The problem seems to be that DBROWCOUNT is defined as 16 so it is replaced by preprocessor which results in the line

typedef LONG DBROWCOUNT;

being converted to

typedef LONG 16;

after preprocessing, which is clearly an error. But without looking at the code I can't say why this wasn't happening in vs2003.

Answer 2

While I can't speak to how this was not a problem with VC 2003, the main issues here is that you've defined DBROWCOUNT as both a type and a macro constant (which isn't allowed, as you know.) You're going to have to make a change somewhere, or else you won't be able to fix the compiler error. If oledb.h is a system header, then the change will have to be to your constant:

#define DBROWCOUNT 16

Can you change that define macro to read something like:

#define dbRowCount_k 16

And then replace DBROWCOUNT with dbRowCount_k in the places in your code where you are using that value as an integer (as opposed to a type)?