40 lines
944 B
Rust
40 lines
944 B
Rust
// Copyright 2015 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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use std::cell::Cell;
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#[derive(Debug)]
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struct B<'a> {
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a: [Cell<Option<&'a B<'a>>>; 2]
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}
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impl<'a> B<'a> {
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fn new() -> B<'a> {
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B { a: [Cell::new(None), Cell::new(None)] }
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}
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}
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fn f() {
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let (b1, b2, b3);
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b1 = B::new();
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b2 = B::new();
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b3 = B::new();
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b1.a[0].set(Some(&b2));
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b1.a[1].set(Some(&b3));
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b2.a[0].set(Some(&b2));
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b2.a[1].set(Some(&b3));
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b3.a[0].set(Some(&b1));
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b3.a[1].set(Some(&b2));
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}
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fn main() {
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f();
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}
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