| // Copyright 2016 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. |
| |
| // Test closure that takes two references and is supposed to return |
| // the first, but actually returns the second. This should fail within |
| // the closure. |
| |
| // compile-flags:-Zborrowck=mir -Zverbose |
| |
| #![feature(rustc_attrs)] |
| |
| #[rustc_regions] |
| fn test() { |
| expect_sig(|a, b| b); // ought to return `a` |
| //~^ ERROR |
| } |
| |
| fn expect_sig<F>(f: F) -> F |
| where F: for<'a> FnMut(&'a i32, &i32) -> &'a i32 |
| { |
| f |
| } |
| |
| fn deref(_p: &i32) { } |
| |
| fn main() { } |
