3 ms·

It always involve an undefined behaviour at creation of the 'null reference', there is no legal way to create it.

• amelius 9mo ago
  True. In any case references solve only half of the problem because it lets you state "this function will not take a null pointer". You still cannot say "this function may take a null pointer" unless you use a very unusual convention of saying that any pointer argument may take a null pointer.
  • widdershins 9mo ago
    I don't find that convention unusual. That's how I (and everyone at my company) writes code every day. If an argument is a pointer, that means it may be null. If it may not be null, it should be a reference.
    • amelius 9mo ago
      And the libraries that you use? E.g., std::size_t std::strlen(const char* str);