41 lines
995 B
Rust
41 lines
995 B
Rust
// 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() {}
|