rust/src/test/ui/reachable/expr_while.rs
2018-07-23 14:31:06 +02:00

40 lines
988 B
Rust

// 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.
#![allow(unused_variables)]
#![allow(unused_assignments)]
#![allow(dead_code)]
#![deny(unreachable_code)]
fn foo() {
while {return} {
println!("Hello, world!");
//~^ ERROR unreachable
}
}
fn bar() {
while {true} {
return;
}
println!("I am not dead.");
}
fn baz() {
// Here, we cite the `while` loop as dead.
while {return} {
println!("I am dead.");
//~^ ERROR unreachable
}
println!("I am, too.");
//~^ ERROR unreachable
}
fn main() { }