ref: 78e765a33d9bb9c0662d205db1de7ecdf74aa867
dir: /qp.h/
typedef union Trie Trie; #pragma incomplete Trie int qpget(Trie *t, char *k, int len, char **pk, void **pv); int qpnext(Trie *t, char **pk, int *plen, void **pv); Trie *qpset(Trie *t, char *k, int len, void *v);