When is a type in c++11 allowed to be memcpyed?

Question

My question is the following:

If I want to copy a class type, memcpy can do it very fast. This is allowed in some situations.

We have some type traits:

Answer 1

What I understood is

• An Object should have default constructor /destructor.
• Default Copy and Move Operations.
• No static and Virtual Functions has multiple
• access specifiers for non-static data members prevents important
• layout optimizations has a non-static member or a base that is not standard layout.

you can test if given type is pod (Plain Old Data) by using standard function is_pod::value

Reference: The C++ programming Language 4th edition