Can I get by with a little help from My Friends?

[gs]

Rule 11-0-1 states,

Member data in non-POD class types shall be private.

with the rationale:

By implementing class interfaces with member functions, the implementation retains more control over how the object state can be modified, and helps to allow a class to be maintained without affecting clients.

Does the above mean non-POD structure types should not contain any friend declarations? A friend declaration would by definition allow for the circumvention of the access restrictions.

[misra cpp]

There are no restrictions on the use of “friend” access within POD or non-POD structures.