To be fair, from a language point of view, clang is not actually lagging that badly. I don't know how reliable is this: https://en.cppreference.com/w/cpp/compil

To be fair, from a language point of view, clang is not actually lagging that badly. I don't know how reliable is this: https://en.cppreference.com/w/cpp/compiler_support https://en.cppreference.com/w/cpp/compiler_support, but language-wise clang is sort of keeping up. libc++ is indeed in a sorry state, but at least on linux clang is usually used against libstdc++ so it is not a huge deal. Personally I'm worried about clangd falling behind, but so far I see very very little that it doesn't understand.