src/test/compile-fail/use-after-move-implicity-coerced-object.rs

   1 // Copyright 2014 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 // ignore-tidy-linelength
  12
  13 #![feature(box_syntax)]
  14
  15 use std::fmt;
  16
  17 struct Number {
  18     n: i64
  19 }
  20
  21 impl fmt::Display for Number {
  22     fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
  23         write!(f, "{}", self.n)
  24     }
  25 }
  26
  27 struct List {
  28     list: Vec<Box<ToString+'static>> }
  29
  30 impl List {
  31     fn push(&mut self, n: Box<ToString+'static>) {
  32         self.list.push(n);
  33     }
  34 }
  35
  36 fn main() {
  37     let n: Box<_> = box Number { n: 42 };
  38     let mut l: Box<_> = box List { list: Vec::new() };
  39     l.push(n);
  40     let x = n.to_string();
  41     //~^ ERROR: use of moved value: `n`
  42 }