34 lines
854 B
Rust
34 lines
854 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 std::cell::Cell;
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#[derive(Copy)]
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enum newtype {
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newvar(int)
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}
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pub fn main() {
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// Test that borrowck treats enums with a single variant
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// specially.
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let x = &Cell::new(5);
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let y = &Cell::new(newtype::newvar(3));
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let z = match y.get() {
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newtype::newvar(b) => {
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x.set(x.get() + 1);
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x.get() * b
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}
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};
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assert_eq!(z, 18);
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}
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