Each C/C++ guideline define language subset so de facto new language but with weak enforcement where in practice most organisations following it anyway create some specific exceptions from that guidelines. C/C++ world (C less) is a mess, it can't be fixed and this agony will be very long lasting.
Indeed. I don't want to be a shill but "safe C++" has a name, it's called Rust. C++ is such an incredibly complex language filled with such easy to set off footguns, that there is no way out of this mess without a non-backwards complete solution, like Rust.
