"does not allow access declarations" build failure(s) — clang 6.0

PackageVersionSupposed error messageFull log Bug report
aqsis 1.8.2-10texturesampleoptions.h:239:31: error: ISO C++11 does not allow access declarations; use using declarations instead Log
opensp 1.5.2-13../include/Ptr.h:72:11: error: ISO C++11 does not allow access declarations; use using declarations instead Log
vdr-plugin-osdserver 0.1.3-18./osdobjects.h:59:19: error: ISO C++11 does not allow access declarations; use using declarations instead Log

3 errors