_gr_memfrombuf
(to) = _gr_memfrombuf(count+1, &buf, &buflen); \
ep = _gr_memfrombuf(memc * sizeof(char *) + ALIGNBYTES, &buf, &buflen);
(to) = _gr_memfrombuf(count+1, &buf, &buflen); \
ep = _gr_memfrombuf(memc * sizeof(char *) + ALIGNBYTES, &buf, &buflen);