| // Copyright 2012 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(dead_code)] |
| #![deny(unused_assignments)] |
| |
| fn f1(x: &mut isize) { |
| *x = 1; // no error |
| } |
| |
| fn f2() { |
| let mut x: isize = 3; //~ ERROR: value assigned to `x` is never read |
| x = 4; |
| x.clone(); |
| } |
| |
| fn f3() { |
| let mut x: isize = 3; |
| x.clone(); |
| x = 4; //~ ERROR: value assigned to `x` is never read |
| } |
| |
| fn f4(mut x: i32) { //~ ERROR: value passed to `x` is never read |
| x = 4; |
| x.clone(); |
| } |
| |
| fn f5(mut x: i32) { |
| x.clone(); |
| x = 4; //~ ERROR: value assigned to `x` is never read |
| } |
| |
| fn main() {} |