|
struct Node_ {
|
|
a: Box<Cycle>
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|
}
|
|
|
|
enum Cycle {
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|
Node(Node_),
|
|
Empty,
|
|
}
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|
|
|
fn main() {
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|
let mut x: Box<_> = Box::new(Cycle::Node(Node_ {a: Box::new(Cycle::Empty)}));
|
|
|
|
// Create a cycle!
|
|
match *x {
|
|
Cycle::Node(ref mut y) => {
|
|
y.a = x; //~ ERROR cannot move out of
|
|
}
|
|
Cycle::Empty => {}
|
|
};
|
|
}
|