Gentoo's Bugzilla –
Attachment 402920 Details for
Bug 549034www-apache/mod_extract_forwarded-2.0.3_pre2015052015:mod_extract_forwarded.c:430:37: error: ‘conn_rec’ has no member named ‘client_addr’ result = &(((uint32_t *)conn->client_addr->ipaddr_ptr)[3]);