For example if you have exceptions enabled, there must be some infrastructure for handling them. Certain C++ compilers generate almost no code for handling exce

For example if you have exceptions enabled, there must be some infrastructure for handling them. Certain C++ compilers generate almost no code for handling exceptions, but the handling is expensive. Other compensate that with more generated code (for keeping stack frames), and faster handling. So you can say - well - disable the exceptions.... But is that C++ anymore? For example Common Lisp is multi-paradigm, but there is no Common Lisp without CLOS. It can't be disabled, and still call itself Common Lisp. Same with RTTI in C++ - it's in the language, but again it can be disabled. Or new/delete (and the missing reallocate construct). So C++ the language, and C++ the runtime being used are quite different things when comes to usage.