res0              516 ext/net/netdb.c     struct addrinfo *res, *res0;
res0              519 ext/net/netdb.c     r = getaddrinfo(nodename, servname, hints, &res0);
res0              522 ext/net/netdb.c     for (res = res0; res != NULL; res = res->ai_next) {
res0              525 ext/net/netdb.c     freeaddrinfo(res0);