34 lines
849 B
Rust
34 lines
849 B
Rust
// Copyright 2018 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-pass
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#![crate_type="lib"]
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#![feature(never_type)]
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#![allow(dead_code)]
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#![allow(unreachable_code)]
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#![allow(unused_variables)]
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struct Foo;
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pub fn f(x: !) -> ! {
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x
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}
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pub fn ub() {
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// This is completely undefined behaviour,
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// but we still want to make sure it compiles.
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let x: ! = unsafe {
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std::mem::transmute::<Foo, !>(Foo)
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};
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f(x)
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}
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