1 // Copyright 2018 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // Issue 27282: Example 2: This sidesteps the AST checks disallowing
12 // mutable borrows in match guards by hiding the mutable borrow in a
13 // guard behind a move (of the mutably borrowed match input) within a
16 // This example is not rejected by AST borrowck (and then reliably
17 // reaches the panic code when executed, despite the compiler warning
18 // about that match arm being unreachable.
26 _ if { (|| { let bar = b; *bar = false; })();
28 &mut true => { println!("You might think we should get here"); },
29 //~^ ERROR use of moved value: `*b` [E0382]
30 _ => panic!("surely we could never get here, since rustc warns it is unreachable."),