36 lines
1011 B
Rust
36 lines
1011 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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// Ensure that we can do a destructuring bind of a fixed-size array,
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// even when the element type has a destructor.
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struct D { x: u8 }
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impl Drop for D { fn drop(&mut self) { } }
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fn main() {
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fn d(x: u8) -> D { D { x: x } }
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let d1 = foo([d(1), d(2), d(3), d(4)], 1);
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let d3 = foo([d(5), d(6), d(7), d(8)], 3);
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assert_eq!(d1.x, 2);
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assert_eq!(d3.x, 8);
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}
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fn foo([a, b, c, d]: [D; 4], i: usize) -> D {
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match i {
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0 => a,
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1 => b,
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2 => c,
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3 => d,
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_ => panic!("unmatched"),
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}
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}
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