> This particular compiler does require bootstrapping, and that's obviously what "the compiler" is referring to in that comment.
You have to pick an option: either it requires bootstrapping, or it doesn’t.
As it’s possible to write the C++20 compiler features in C++11 (or whatever GCC or Clang are written in these days), it factually does not require bootstrapping.
You said:
> This particular compiler does require bootstrapping, and that's obviously what "the compiler" is referring to in that comment.
You have to pick an option: either it requires bootstrapping, or it doesn’t.
As it’s possible to write the C++20 compiler features in C++11 (or whatever GCC or Clang are written in these days), it factually does not require bootstrapping.