| // Copyright 2016 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(unused_variables)] |
| #![allow(unused_assignments)] |
| #![allow(dead_code)] |
| #![deny(unreachable_code)] |
| |
| fn foo() { |
| // No error here. |
| let x; |
| x = return; //~ ERROR unreachable |
| } |
| |
| fn bar() { |
| use std::ptr; |
| let p: *mut ! = ptr::null_mut::<!>(); |
| unsafe { |
| // Here we consider the `return` unreachable because |
| // "evaluating" the `*p` has type `!`. This is somewhat |
| // dubious, I suppose. |
| *p = return; //~ ERROR unreachable |
| } |
| } |
| |
| fn baz() { |
| let mut i = 0; |
| *{return; &mut i} = 22; //~ ERROR unreachable |
| } |
| |
| fn main() { } |
