// FIXME Does it works???
string_t *string_create_steal_cstr_ptr(char *data, const size_t len) {
    // FIXME Ensure str is correctly allocated on heap.
    string_t *str = (string_t *)malloc(sizeof(string_t));

    // FIXME Init the string_t or not???
    //string_init(*str);

    if (str == NULL) {
        // FIXME Proper error management, try using throw catch exception if possible.
        return NULL;
    }

    struct m_string_s *str_s = ((struct m_string_s *) str);

    str_s->u.heap.alloc[sizeof(m_str1ng_size_t)-2] = 1;
    str_s->u.heap.alloc[sizeof(m_str1ng_size_t)-1] = 31;
    str_s->u.heap.size = len - 1,
    str_s->u.heap.ptr = (
        (
            struct {
                long long _n;
                // FIXME Use char *_d, char _d[sizeof(data)] or char _d[len] ???
                //char _d[sizeof(data)];
                //char _d[len];
                // FIXME If use this, should it be const char * instead of char *???
                char *_d;
            }
        ) {
            ._n=0, 
            ._d=data
        }
    )._d;

    return str;
}