[ar15saveslives]

What is "memory safe" for you? If you use C arrays and raw pointers in your C++17 code, it's definitely not memory safe, but the main problem is that it's not modern C++.

[steveklabnik]

Even modern C++ isn't memory safe. Most straightforward example is to move a uniq_ptr, which makes it a nullptr, ready to be dereferenced and cause UB.

[ar15saveslives]

How does it happen? Non-const unique_ptr& used as a function parameter?

[steveklabnik]

http://www.steveklabnik.com/uniq_ptr_problem/

[ar15saveslives]

I can simplify your example:

  unique_ptr<int> p;
  auto n = *p; // C++ kills!