"Not allowed args fails the build" build failure(s) — clang 11.0.0

PackageVersionSupposed error messageFull log Bug report
devil 1.7.8-10error: invalid argument '-std=gnu99' not allowed with 'C++' Log
freebayes 1.3.2-3error: invalid argument '-std=gnu++11' not allowed with 'C' Log
grpc 1.30.2-2error: invalid argument '-std=gnu99' not allowed with 'C++' Log
irstlm 6.00.05-2error: invalid argument '-std=c++0x' not allowed with 'C' Log
libsass-python 0.20.1-1error: invalid argument '-std=gnu++0x' not allowed with 'C' Log
objcryst-fox 1.9.6.0-2.2error: invalid argument '-std=gnu++98' not allowed with 'C' Log
oggvideotools 0.9.1-5.1error: invalid argument '--std=c++0x' not allowed with 'C' Log
repsnapper 2.5a5-2error: invalid argument '--std=c++11' not allowed with 'C' Log
vg 1.27.1+ds-1error: invalid argument '-std=c++14' not allowed with 'C' Log
wesnoth-1.14 1:1.14.13-1error: invalid argument '-std=c++11' not allowed with 'C' Log

10 errors