| // Copyright 2013-2014 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. |
| |
| // Check that safe fns are not a subtype of unsafe fns. |
| |
| |
| fn foo(x: i32) -> i32 { |
| x * 22 |
| } |
| |
| fn bar(x: fn(i32) -> i32) -> unsafe fn(i32) -> i32 { |
| x // OK, coercion! |
| } |
| |
| fn main() { |
| let f = bar(foo); |
| let x = unsafe { f(2) }; |
| assert_eq!(x, 44); |
| } |
