File::Stat#nlink

static VALUE
rb_stat_nlink(VALUE self)
{
    /* struct stat::st_nlink is nlink_t in POSIX.  Not the case for Windows. */
    const struct stat *ptr = get_stat(self);

    if (sizeof(ptr->st_nlink) <= sizeof(int)) {
        return UINT2NUM((unsigned)ptr->st_nlink);
    }
    else if (sizeof(ptr->st_nlink) == sizeof(long)) {
        return ULONG2NUM((unsigned long)ptr->st_nlink);
    }
    else if (sizeof(ptr->st_nlink) == sizeof(LONG_LONG)) {
        return ULL2NUM((unsigned LONG_LONG)ptr->st_nlink);
    }
    else {
        rb_bug(":FIXME: don't know what to do");
    }
}