rust/src/test/compile-fail/issue-40288.rs
2017-03-08 14:36:19 +02:00

31 lines
882 B
Rust

// Copyright 2017 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.
fn save_ref<'a>(refr: &'a i32, to: &mut [&'a i32]) {
for val in &mut *to {
*val = refr;
}
}
fn main() {
let ref init = 0i32;
let ref mut refr = 1i32;
let mut out = [init];
save_ref(&*refr, &mut out);
// This shouldn't be allowed as `refr` is borrowed
*refr = 3; //~ ERROR cannot assign to `*refr` because it is borrowed
// Prints 3?!
println!("{:?}", out[0]);
}