[C++] clang HEAD 10.0.0 (https://github.com/llvm-mirror/clang.git 65acf43270ea2894dffa0d0b292b92402f80c8cb) (https://github.com/llvm-mirror/llvm.git 2c4ca6832fa6b306ee6a7010bfb80a3f2596f824)