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// 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.
#![feature(match_default_bindings)]
// Verify the binding mode shifts - only when no `&` are auto-dereferenced is the
// final default binding mode mutable.
fn main() {
match &&Some(5i32) {
Some(n) => {
*n += 1; //~ ERROR cannot assign to immutable
let _ = n;
}
None => {},
};
match &mut &Some(5i32) {
Some(n) => {
*n += 1; //~ ERROR cannot assign to immutable
let _ = n;
}
None => {},
};
match &&mut Some(5i32) {
Some(n) => {
*n += 1; //~ ERROR cannot assign to immutable
let _ = n;
}
None => {},
};
}
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