src/test/compile-fail/mut-pattern-mismatched.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

// 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.

fn main() {
    let foo = &mut 1;

    // (separate lines to ensure the spans are accurate)

     let &_ //~  ERROR mismatched types
            //~| expected type `&mut {integer}`
            //~| found type `&_`
            //~| types differ in mutability
        = foo;
    let &mut _ = foo;

    let bar = &1;
    let &_ = bar;
    let &mut _ //~  ERROR mismatched types
               //~| expected type `&{integer}`
               //~| found type `&mut _`
               //~| types differ in mutability
         = bar;
}