src/test/ui/E0501.rs

// Copyright 2016 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.

// ignore-tidy-linelength
// revisions: ast mir
//[mir]compile-flags: -Z borrowck=mir

fn inside_closure(x: &mut i32) {
}

fn outside_closure_1(x: &mut i32) {
}

fn outside_closure_2(x: &i32) {
}

fn foo(a: &mut i32) {
    let bar = || {
        inside_closure(a)
    };
    outside_closure_1(a); //[ast]~ ERROR cannot borrow `*a` as mutable because previous closure requires unique access
    //[mir]~^ ERROR cannot borrow `*a` as mutable because previous closure requires unique access

    outside_closure_2(a); //[ast]~ ERROR cannot borrow `*a` as immutable because previous closure requires unique access
    //[mir]~^ ERROR cannot borrow `*a` as immutable because previous closure requires unique access

    drop(bar);
}

fn main() {
}