“That’s odd, for some reason it keeps showing us pictures of police officers!”

It is crazy to go to all of the extra trouble of dealing with an additional pointer for the email_t type, when it is just a struct that is a simple wrapper around a char * that could be passed around directly; a lot of the code in this example is just for dealing with having to manage the lifetime of the extra email_t allocation, which seems like an unnecessary hoop to jump through.