rust/src/test/compile-fail/slice-mut-2.rs

// Copyright 2014 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.

// Test mutability and slicing syntax.

fn main() {
    let x: &[isize] = &[1, 2, 3, 4, 5];
    // Can't mutably slice an immutable slice
    let slice: &mut [isize] = &mut [0, 1];
    let _ = &mut x[2..4]; //~ERROR cannot borrow immutable borrowed content `*x` as mutable
}