ref: d44e426a561d752cdcb5d9484e20e66b25676c77
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);