25 lines
819 B
Rust
25 lines
819 B
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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enum cycle {
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node({mut a: ~cycle}),
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empty
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}
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fn main() {
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let x = ~node({mut a: ~empty});
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// Create a cycle!
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match *x { //~ NOTE loan of immutable local variable granted here
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node(ref y) => {
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y.a = x; //~ ERROR moving out of immutable local variable prohibited due to outstanding loan
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}
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empty => {}
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};
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}
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