26 lines
890 B
Rust
26 lines
890 B
Rust
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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struct Foo;
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fn takes_ref(_: &Foo) {}
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fn main() {
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let ref opt = Some(Foo);
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opt.map(|arg| takes_ref(arg));
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//~^ ERROR mismatched types [E0308]
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opt.and_then(|arg| Some(takes_ref(arg)));
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//~^ ERROR mismatched types [E0308]
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let ref opt: Result<_, ()> = Ok(Foo);
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opt.map(|arg| takes_ref(arg));
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//~^ ERROR mismatched types [E0308]
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opt.and_then(|arg| Ok(takes_ref(arg)));
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//~^ ERROR mismatched types [E0308]
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}
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