Thread: 2 structures to reference each other

Is there a way to get to get this to work...

// header1.h
struct s1{
struct s2 * s2_ptr;
};

// header2.h
struct s2{
struct s1 * s1_ptr;
};

I think i've seen the kernel do it but i cant find it again to replicate.( if i wasnt dreaming );

This should work (I don't have a compiler right now).

Code:

struct s2;

struct s1{
struct s2 * s2_ptr;
};

// header2.h
#include <header1.h>
struct s2{
struct s1 * s1_ptr;
};

Code:

/* st1.h */
struct s2; /* we use an "incomplete reference" */
struct s1
{
    struct s2 *s2ptr;
};

/* st2.h */
struct s1;
struct s2
{
    struct s1 *s1ptr;
};

Both have to end up in the same scope though. Becuase you must complete all "incomplete references".

[edit]
Curses, foiled again.
[/edit]

Quzah.

thanks both