34 lines
849 B
Rust
34 lines
849 B
Rust
|
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
// compile-pass
|
||
|
|
|
||
|
|
#![crate_type="lib"]
|
||
|
|
|
||
|
|
#![feature(never_type)]
|
||
|
|
#![allow(dead_code)]
|
||
|
|
#![allow(unreachable_code)]
|
||
|
|
#![allow(unused_variables)]
|
||
|
|
|
||
|
|
struct Foo;
|
||
|
|
|
||
|
|
pub fn f(x: !) -> ! {
|
||
|
|
x
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn ub() {
|
||
|
|
// This is completely undefined behaviour,
|
||
|
|
// but we still want to make sure it compiles.
|
||
|
|
let x: ! = unsafe {
|
||
|
|
std::mem::transmute::<Foo, !>(Foo)
|
||
|
|
};
|
||
|
|
f(x)
|
||
|
|
}
|