string - Does conversion between alias types in Go create copies?

Question

Example:

type MyString string 
var s = "very long string"
var ms = MyString(s)
var s2 = string(s)

Are ms or s2 a full copy of s (as it would be done with []byte(s))? Or they are just a string struct copies (which keeps the real value in a pointer)?

What if we are passing this to a function? E.g.:

func foo(s MyString){
  ...
}
foo(ms(s))  // do we copy s here?

Answer 1

Waitting for answers