server/vhost.c:1161: error: UNINITIALIZED_VALUE
  The value read from is_v6literal was never initialized.

server/vhost.c:1161:31: 
1159.         if (have_hostname_from_url && host_header != NULL) {
1160.             const char *info = "Would replace";
1161.             const char *new = construct_host_header(r, is_v6literal);
                                    ^
1162.             if (!(conf->http_conformance & AP_HTTP_CONFORMANCE_LOGONLY)) {
1163.                 apr_table_set(r->headers_in, "Host", r->hostname);
