rust/src/test/ui/assign-imm-local-twice.rs

29 lines
1021 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.
// revisions: ast mir
//[mir]compile-flags: -Zborrowck=mir
fn test() {
let v: isize;
//[mir]~^ NOTE consider changing this to `mut v`
v = 1; //[ast]~ NOTE first assignment
//[mir]~^ NOTE first assignment
println!("v={}", v);
v = 2; //[ast]~ ERROR cannot assign twice to immutable variable
//[mir]~^ ERROR cannot assign twice to immutable variable `v`
//[ast]~| NOTE cannot assign twice to immutable
//[mir]~| NOTE cannot assign twice to immutable
println!("v={}", v);
}
fn main() {
}