"No viable overloaded" build failure(s) — clang 3.0

PackageVersionSupposed error messageFull log Bug report
oxref 0.90.03-1objdump/objdump1.cc:20:23: error: no viable overloaded '+=' Log
xstow 0.5.1-7./leoini.h:250:9: error: no viable overloaded '=' Log

2 errors