| // Copyright 2018 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. |
| |
| struct Foo; |
| fn takes_ref(_: &Foo) {} |
| |
| fn main() { |
| let ref opt = Some(Foo); |
| opt.map(|arg| takes_ref(arg)); |
| //~^ ERROR mismatched types [E0308] |
| opt.and_then(|arg| Some(takes_ref(arg))); |
| //~^ ERROR mismatched types [E0308] |
| let ref opt: Result<_, ()> = Ok(Foo); |
| opt.map(|arg| takes_ref(arg)); |
| //~^ ERROR mismatched types [E0308] |
| opt.and_then(|arg| Ok(takes_ref(arg))); |
| //~^ ERROR mismatched types [E0308] |
| } |
