"illegal storage class on function" build failure(s) — clang 3.8.1

PackageVersionSupposed error messageFull log Bug report
gsequencer 0.6.55-1src/ags/audio/ags_audio.c:816:3: error: illegal storage class on function Log
reprepro 4.17.1-1sourceextraction.c:135:2: error: illegal storage class on function Log

2 errors