__hash_more
h = __hash_more(&cp->ch, sizeof(cp->ch), h);
h = __hash_more(&cp->attr, sizeof(cp->attr), h);
h = __hash_more(&np->ch, sizeof(np->ch), h);
uint32_t __hash_more(const void *, size_t, unsigned int);
#define __hash(s, len) __hash_more((s), (len), 0u)
blank_hash = __hash_more(buf, sizeof(buf), blank_hash);
blank_hash = __hash_more((char *)(void *)buf,