39 lines
867 B
Rust
39 lines
867 B
Rust
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// 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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struct C<'a> {
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p: Cell<Option<&'a C<'a>>>,
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}
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impl<'a> C<'a> {
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fn new() -> C<'a> { C { p: Cell::new(None) } }
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}
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fn f1() {
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let (c1, c2) = (C::new(), C::new());
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c1.p.set(Some(&c2));
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c2.p.set(Some(&c1));
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}
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fn f2() {
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let (c1, c2);
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c1 = C::new();
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c2 = C::new();
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c1.p.set(Some(&c2));
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c2.p.set(Some(&c1));
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}
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fn main() {
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f1();
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f2();
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}
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