iconv: fix missing bounds checking for shift_jis decoding

[musl.git] / src / string / wcstok.c

#include <wchar.h>

wchar_t *wcstok(wchar_t *restrict s, const wchar_t *restrict sep, wchar_t **restrict p)
{
        if (!s && !(s = *p)) return NULL;
        s += wcsspn(s, sep);
        if (!*s) return *p = 0;
        *p = s + wcscspn(s, sep);
        if (**p) *(*p)++ = 0;
        else *p = 0;
        return s;
}