🚀 go-pugleaf

The C FAQ may have some hints for you.  Solaris uses the old 
pre ANSI it seems.

10.20:  I have some old code that tries to construct identifiers with a
        macro like

                #define Paste(a, b) a/**/b

        but it doesn't work any more.

A:      It was an undocumented feature of some early preprocessor
        implementations (notably John Reiser's) that comments
        disappeared entirely and could therefore be used for token
        pasting.  ANSI affirms (as did K&R1) that comments are replaced
        with white space.  However, since the need for pasting tokens
        was demonstrated and real, ANSI introduced a well-defined token-
        pasting operator, ##, which can be used like this:

                #define Paste(a, b) a##b

Ugly, ain't it?  -Karen


=============================================================================
Karen Hensley                                Bridgeway Corporation       
Manager of Software Development	             Bridging the Gap in Network Mgt.
My opinions may not be Bridgeway's.	     (206) 881-4270

On 9 Nov 1995, Suwanto Suwanto wrote:

> I am trying to port a program that is compiled succesfully on Dec Ultrix,
> but i can't compile it on Solaris.  The problem seems to be with the 
> following directive:
> 
> #define CONCAT(f) f##_ptr
> 
> it is supposed to append a string '_ptr' at the end of the variable f.
> 
> suppose you do CONCAT(head) then the result should be head_ptr
> 
> Apparently Solaris and a few other systems don't like this kind of directive.
> 
> If you know other directive that does the same thing, please let me know.
> Any help is appreciated.
> 
> Thank you,
>   Suwanto
>