20 lines
840 B
Rust
20 lines
840 B
Rust
// Copyright 2015 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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// Tests that we consider `Box<U>: !Sugar` to be ambiguous, even
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// though we see no impl of `Sugar` for `Box`. Therefore, an overlap
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// error is reported for the following pair of impls (#23516).
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pub trait Sugar { fn dummy(&self) { } }
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pub trait Sweet { fn dummy(&self) { } }
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impl<T:Sugar> Sweet for T { } //~ ERROR E0119
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impl<U:Sugar> Sweet for Box<U> { }
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fn main() { }
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