29 lines
872 B
Rust
29 lines
872 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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use either::*;
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enum X = Either<(uint,uint),fn()>;
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impl &X {
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fn with(blk: fn(x: &Either<(uint,uint),fn()>)) {
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blk(&**self)
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}
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}
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fn main() {
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let mut x = X(Right(main));
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do (&mut x).with |opt| { //~ ERROR illegal borrow
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match opt {
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&Right(ref f) => {
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x = X(Left((0,0)));
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(*f)()
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},
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_ => fail
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}
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}
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} |