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// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(fn_traits, unboxed_closures)]
use std::ops::FnMut;
struct S {
x: isize,
y: isize,
}
impl FnMut<isize> for S {
extern "rust-call" fn call_mut(&mut self, z: isize) -> isize {
self.x + self.y + z
}
}
impl FnOnce<isize> for S {
type Output = isize;
extern "rust-call" fn call_once(mut self, z: isize) -> isize { self.call_mut(z) }
}
fn main() {
let mut s = S {
x: 1,
y: 2,
};
drop(s(3)) //~ ERROR cannot use call notation
}
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