I work with a C++20 code base. By which mean... there is at least one C++20 feature in use, which means it won't compile with anything earlier than GCC 11. This

I work with a C++20 code base. By which mean... there is at least one C++20 feature in use, which means it won't compile with anything earlier than GCC 11. This reality is probably the norm anywhere you see C++20 job description.