I get haunted by an error on 12-CURRENT, which prevents me from installing or building (poudriere) QEMU on 12-CURRENT:

[...]
  CC    net/util.o
migration/rdma.c:805:26: warning: unused variable 'port_attr' [-Wunused-variable]
    struct ibv_port_attr port_attr;
                         ^
migration/rdma.c:929:11: warning: implicit declaration of function 'rdma_getaddrinfo' is invalid in C99 [-Wimplicit-function-declaration]
    ret = rdma_getaddrinfo(rdma->host, port_str, NULL, &res);
          ^
migration/rdma.c:935:35: error: incomplete definition of type 'struct rdma_addrinfo'
    for (e = res; e != NULL; e = e->ai_next) {
                                 ~^
migration/rdma.c:901:12: note: forward declaration of 'struct rdma_addrinfo'
    struct rdma_addrinfo *res;
           ^
migration/rdma.c:936:20: error: incomplete definition of type 'struct rdma_addrinfo'
        inet_ntop(e->ai_family,
                  ~^
migration/rdma.c:901:12: note: forward declaration of 'struct rdma_addrinfo'
    struct rdma_addrinfo *res;
           ^
migration/rdma.c:937:39: error: incomplete definition of type 'struct rdma_addrinfo'
            &((struct sockaddr_in *) e->ai_dst_addr)->sin_addr, ip, sizeof ip);
                                     ~^
migration/rdma.c:901:12: note: forward declaration of 'struct rdma_addrinfo'
    struct rdma_addrinfo *res;
           ^
migration/rdma.c:940:53: error: incomplete definition of type 'struct rdma_addrinfo'
        ret = rdma_resolve_addr(rdma->cm_id, NULL, e->ai_dst_addr,
[...]


I have this error on several boxes - all showing the same error on very different building environments.