src/test/compile-fail/unboxed-closures-vtable-mismatch.rs

   1 // Copyright 2012 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 #![feature(unboxed_closures)]
  12
  13 use std::ops::FnMut;
  14
  15 fn to_fn_mut<A,F:FnMut<A>>(f: F) -> F { f }
  16
  17 fn call_it<F:FnMut(isize,isize)->isize>(y: isize, mut f: F) -> isize {
  18     f(2, y)
  19 }
  20
  21 pub fn main() {
  22     let f = to_fn_mut(|x: usize, y: isize| -> isize { (x as isize) + y });
  23     let z = call_it(3, f);
  24     //~^ ERROR type mismatch
  25     //~| ERROR type mismatch
  26     println!("{}", z);
  27 }
  28