Richard is the code owner of the Clang C++ frontend, to which he has been contributing for over five years. He implemented most of the C++11, C++14, and C++17 features that Clang supports, and brought Clang's modules support up to production quality.
Richard is also the Project Editor of the ISO C++ committee, in which he is an active participant. He proposed or contributed to more than half of the language features added in C++14 and C++17.