Enum variants are always exported cross-crate

[huonw]

// foo.rs
enum Foo {
    Bar(int)
}

extern mod foo;

fn main() {
    println!("{:?}", foo::Bar(1))
}

The above compiles fine, and, adding an explicit priv to Bar emits an error about unnecessary priv.

[huonw]

The above works (i.e. fails to compile) intra-crate, except then we can't make Bar public

mod foo {
    enum Private { pub Public }
}

fn main() { foo::Public; }

complains about Public being inaccessible.

[alexcrichton]

Nominating, this is a backwards compatibility hazard.

[pnkfelix]

Assigning 1.0 milestone, P-backcompat-lang.