src/test/compile-fail/issue-25793.rs

   1 // Copyright 2016 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 macro_rules! width(
  12     ($this:expr) => {
  13         $this.width.unwrap()
  14         //~^ ERROR cannot use `self.width` because it was mutably borrowed
  15     }
  16 );
  17
  18 struct HasInfo {
  19     width: Option<usize>
  20 }
  21
  22 impl HasInfo {
  23     fn get_size(&mut self, n: usize) -> usize {
  24         n
  25     }
  26
  27     fn get_other(&mut self) -> usize {
  28         self.get_size(width!(self))
  29         //~^ NOTE in this expansion of width!
  30     }
  31 }
  32
  33 fn main() {}