itojun@iijlab.net writes:

> >I don't think the latest wctype.h can resolve this problem.
> 
> 	latest wctype.h (revision 1.3 - it may have missed supscan)
> 	should fix it.

Humm....  we need

unsigned long ___runetype_mb __P((wint_t));
wint_t        ___tolower_mb __P((wint_t));
wint_t        ___toupper_mb __P((wint_t));

in wctype.h, don't we?