CVI 8.5 __FUNCTION__ macro cannot be used as part of string constant

[CviUser2003]

Looking at this post:

http://forums.ni.com/ni/board/message?board.id=180&thread.id=32577&view=by_date_ascending&page=1

I tried to add #pragma iso_9899_1999 to the top of my code.

However, during compile, the error below occurred:

Type error in argument 2 to 'hrCheck"; found "pointer to const char" expected "pointer to char"

     int hrCheck( HRESULT hresult, char *desc )

     ...

          hrCheck(hr, __FUNCTION__ " my post-string error message")

This error occurred in other error strings where I appended __FUNCTION__ to string constants, or embedded it inside other string constants.

void logger( char * );

...

logger( __FUNCTION__ "()- error occurred because ..." ); // fails

[JonathanN]

Hi CviUser2003,

In versions prior to CVI 8.5, we implemented the __FUNCTION__ macro such that we internally returned a string (i.e. which means you can use this in places that are expecting a string).  In CVI 8.5, we changed the implementation to be more consistent with the C99 specification. This change no longer evaluates to a string and thus you receive the error.  We reverted this change in CVI 8.5.1 so that existing applications like yours will continue to work.  So your options are:

1. Upgrade to CVI 8.5.1
2. Use a format specifier like so:

    #pragma iso_9899_1999
    DebugPrintf ("%s", __FUNCTION__);

Best Regards,