[Issue 17065] [REG2.072] Unique does not work with private members

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=17065

--- Comment #2 from dransic at gmail.com ---
(In reply to greenify from comment #1)
> > If this behaviour is intended, the doc should state it.
> 
> This should definitely have gotten a proper changelog entry (and deprecation
> warning).
> However, I am not really convinced that it should be noted in the
> documentation that access to private member variables isn't supported as
> this is the way visibility is supposed to work in D. Did anything lead you
> to this assumption or was it just by chance that accessing `private`
> variables worked and you didn't realize until the hole was fixed?

Private members are supposed to be accessible in the module where the type is
declared (module-level encapsulation). A type constructor like `Unique` should
return a type with the same access behavior. RefCounted works as I expect (but
maybe I have wrong expectations...):

---
import std.typecons : RefCounted;

struct Foo
{
    private int i;
}

void main()
{
    RefCounted!Foo foo = Foo(1);
    foo.i = 2;  // OK
}
---

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