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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 | // Tests that unsafe extern fn pointers do not implement any Fn traits. | |
12 | ||
13 | #![feature(unboxed_closures)] | |
14 | ||
15 | use std::ops::{Fn,FnMut,FnOnce}; | |
16 | ||
17 | unsafe fn square(x: &isize) -> isize { (*x) * (*x) } | |
18 | ||
19 | fn call_it<F:Fn(&isize)->isize>(_: &F, _: isize) -> isize { 0 } | |
20 | fn call_it_mut<F:FnMut(&isize)->isize>(_: &mut F, _: isize) -> isize { 0 } | |
21 | fn call_it_once<F:FnOnce(&isize)->isize>(_: F, _: isize) -> isize { 0 } | |
22 | ||
23 | fn a() { | |
85aaf69f | 24 | let x = call_it(&square, 22); |
54a0048b SL |
25 | //~^ ERROR E0277 |
26 | //~| ERROR E0277 | |
1a4d82fc JJ |
27 | } |
28 | ||
29 | fn b() { | |
c34b1796 | 30 | let y = call_it_mut(&mut square, 22); |
54a0048b SL |
31 | //~^ ERROR E0277 |
32 | //~| ERROR E0277 | |
1a4d82fc JJ |
33 | } |
34 | ||
35 | fn c() { | |
c34b1796 | 36 | let z = call_it_once(square, 22); |
54a0048b | 37 | //~^ ERROR E0277 |
1a4d82fc JJ |
38 | } |
39 | ||
40 | fn main() { } |