lib/cachehash.c:152:27: warning: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        node_t *n = judy_get(ch, key, keylen);
                                 ^~~

lib/cachehash.c:166:27: warning: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        node_t *n = judy_get(ch, key, keylen);
                                 ^~~

lib/cachehash.c:217:21: warning: passing 'const void *' to parameter of type 'void *' discards qualifiers [-Wincompatible-pointer-types-discards-qualifiers]
        JHSI(v_, ch->judy, key, keylen);
                           ^~~

src/recv.c:104:17: warning: comparison of integers of different signs: 'uint32_t' (aka 'unsigned int') and 'int' [-Wsign-compare]
                assert(buflen > zconf.data_link_size);
                       ~~~~~~ ^ ~~~~~~~~~~~~~~~~~~~~

src/send.c:420:37: warning: arithmetic on a pointer to void is a GNU extension [-Wgnu-pointer-arith]
                                memcpy(((void *)batch->packets) + (batch->len * MAX_PACKET_SIZE), contents, length);
                                       ~~~~~~~~~~~~~~~~~~~~~~~~ ^

src/parser.y:13:11: warning: a function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]
int yywrap()
          ^
           void