macro question

[Thomas Charron]

On Thu, Oct 8, 2009 at 9:36 AM,  <bruce.labitt at autoliv.com> wrote:
> In a file system_file_ops.c that is in the psocket library there is the
> statement
>
> #define wrap(f) wrap_#f
>
> I think this is supposed to do
> wrap(read)( .... )  ==> wrap_read( .... )
>
> Are there circumstances when this does not work?  C89, C99, ???

  Isn't it supposed to be double #?

#define wrap(f) wrap_##f


-- 
-- Thomas