Re: [Swig-devel] constantWrapper not called on NULL

[William S F. <ws...@fu...>]

On 07/08/12 22:54, Gerald Wodni wrote:
> Hi all,
>
> I am working on a Forth module for SWIG since 2008, and finally want to fix
> some remaining bugs and clean up the source to apply for svn access.
>
> One thing that puzzles me is that constants with the value NULL do not call
> the constantWrapper, e.g:
>    #define number_0 0
> calls the wrapper, but
>    #define number_null NULL
> does not.
>
> Can you elaborate why that is, or how to circumvent this?
Neither the C compiler nor SWIG understands what anything is unless you 
tell it what it is. The C compiler requires stddef.h for the definition 
of NULL. I'd just use this for SWIG:


%ignore NULL;
#define NULL 0

/* Then your code... */
#define number_0 0
#define number_null NULL

William