src/test/compile-fail/borrowck/borrowck-unboxed-closures.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 fn a<F:Fn(isize, isize) -> isize>(mut f: F) {
  12     let g = &mut f;
  13     f(1, 2);    //~ ERROR cannot borrow `f` as immutable
  14 }
  15
  16 fn b<F:FnMut(isize, isize) -> isize>(f: F) {
  17     f(1, 2);    //~ ERROR cannot borrow immutable argument
  18 }
  19
  20 fn c<F:FnOnce(isize, isize) -> isize>(f: F) {
  21     f(1, 2);
  22     f(1, 2);    //~ ERROR use of moved value
  23 }
  24
  25 fn main() {}