rust/src/test/compile-fail/issue-12116.rs

32 lines
983 B
Rust
Raw Normal View History

// Copyright 2012-2014 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(box_patterns)]
#![feature(box_syntax)]
2016-12-11 08:23:18 -06:00
#![allow(dead_code)]
#![allow(unused_variables)]
#![deny(unreachable_patterns)]
enum IntList {
Cons(isize, Box<IntList>),
Nil
}
fn tail(source_list: &IntList) -> IntList {
match source_list {
&IntList::Cons(val, box ref next_list) => tail(next_list),
2016-12-11 08:23:18 -06:00
&IntList::Cons(val, box IntList::Nil) => IntList::Cons(val, box IntList::Nil),
//~^ ERROR unreachable pattern
_ => panic!()
}
}
fn main() {}