src/test/run-pass/never-type-rvalues.rs

// 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.

#![feature(never_type)]
#![allow(dead_code)]
#![allow(path_statements)]
#![allow(unreachable_patterns)]

fn never_direct(x: !) {
    x;
}

fn never_ref_pat(ref x: !) {
    *x;
}

fn never_ref(x: &!) {
    let &y = x;
    y;
}

fn never_pointer(x: *const !) {
    unsafe {
        *x;
    }
}

fn never_slice(x: &[!]) {
    x[0];
}

fn never_match(x: Result<(), !>) {
    match x {
        Ok(_) => {},
        Err(_) => {},
    }
}

pub fn main() { }