src/test/compile-fail/issue-6801.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 // Creating a stack closure which references an box and then
  12 // transferring ownership of the box before invoking the stack
  13 // closure results in a crash.
  14
  15 #![feature(box_syntax)]
  16
  17 fn twice(x: Box<usize>) -> usize {
  18      *x * 2
  19 }
  20
  21 fn invoke<F>(f: F) where F: FnOnce() -> usize {
  22      f();
  23 }
  24
  25 fn main() {
  26       let x  : Box<usize>  = box 9;
  27       let sq =  || { *x * *x };
  28
  29       twice(x); //~ ERROR: cannot move out of
  30       invoke(sq);
  31 }