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.
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.
11 // Tests that unsafe extern fn pointers do not implement any Fn traits.
13 #![feature(unboxed_closures)]
15 use std::ops::{Fn,FnMut,FnOnce};
17 unsafe fn square(x: isize) -> isize { x * x }
18 // note: argument type here is `isize`, not `&isize`
20 fn call_it<F:Fn(&isize)->isize>(_: &F, _: isize) -> isize { 0 }
21 fn call_it_mut<F:FnMut(&isize)->isize>(_: &mut F, _: isize) -> isize { 0 }
22 fn call_it_once<F:FnOnce(&isize)->isize>(_: F, _: isize) -> isize { 0 }
25 let x = call_it(&square, 22);
26 //~^ ERROR not implemented
27 //~| ERROR not implemented
31 let y = call_it_mut(&mut square, 22);
32 //~^ ERROR not implemented
33 //~| ERROR not implemented
37 let z = call_it_once(square, 22);
38 //~^ ERROR not implemented