src/test/ui/nll/closure-use-spans.rs

   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.
   4 //
   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.
  10
  11 // check that liveness due to a closure capture gives a special note
  12
  13 #![feature(nll)]
  14
  15 fn use_as_borrow_capture(mut x: i32) {
  16     let y = &x;
  17     x = 0; //~ ERROR
  18     || *y;
  19 }
  20
  21 fn use_as_borrow_mut_capture(mut x: i32) {
  22     let y = &mut x;
  23     x = 0; //~ ERROR
  24     || *y = 1;
  25 }
  26
  27 fn use_as_move_capture(mut x: i32) {
  28     let y = &x;
  29     x = 0; //~ ERROR
  30     move || *y;
  31 }
  32
  33 fn main() {}