I can see that the standard committee is taking some steps to make things safer and I would really appreciate a C++ safety profile, where one can choose if they

I can see that the standard committee is taking some steps to make things safer and I would really appreciate a C++ safety profile, where one can choose if they want the STL UB or not. E.g: GCC 7.x has a macro which makes all these unsafe member functions abort instead of exhibit UB. Even better would be a "safe" block like D, where everything is checked & well defined.