return (NULL);
ret = list_new ();
ret->length = l->length;
ret->data = p_new(void*, l->length);
for (i = 0; i < l->length; i++)
return (NULL);
ret = list_new ();
ret->length = l->length;
ret->data = p_new(void*, l->length);
for (i = 0; i < l->length; i++)