The build fails with Clang 6 and soon the port will be marked as BROKEN on 12.0 and 11.2 if we do not act.
Created attachment 196537 [details] net__tcpreen.diff
A commit references this bug: Author: tobik Date: Sun Sep 9 07:18:37 UTC 2018 New revision: 479276 URL: https://svnweb.freebsd.org/changeset/ports/479276 Log: net/tcpreen: Fix build with Clang 6 main.cpp:111:27: error: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wreserved-user-defined-literal] "TCP re-engineering tool "VERSION" ("PACKAGE_HOST")\n" ^ http://beefy12.nyi.freebsd.org/data/head-amd64-default/p479076_s338486/logs/errors/tcpreen-1.4.4_3.log PR: 230895 Submitted by: tobik Approved by: jmohacsi@bsd.hu (maintainer timeout, 2 weeks) Changes: head/net/tcpreen/files/ head/net/tcpreen/files/patch-src_main.cpp