33 lines
840 B
Rust
33 lines
840 B
Rust
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// Copyright 2017 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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// compile-flags: -Zmir-opt-level=1
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use std::mem;
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#[derive(Copy, Clone)]
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enum Never {}
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union Foo {
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a: u64,
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b: Never
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}
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fn foo(xs: [(Never, u32); 1]) -> u32 { xs[0].1 }
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fn bar([(_, x)]: [(Never, u32); 1]) -> u32 { x }
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fn main() {
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println!("{}", mem::size_of::<Foo>());
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let f = [Foo { a: 42 }, Foo { a: 10 }];
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println!("{:?}", unsafe { f[0].a });
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}
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