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add tests for #20825

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closes #20825
This commit is contained in:
Andrew Paseltiner 2015-07-18 18:03:30 -04:00
parent a27fed7cbd
commit adf753e529
2 changed files with 39 additions and 0 deletions
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20
src/test/compile-fail/issue-20825.rs Normal file
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// Copyright 2015 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.
pub trait Subscriber {
type Input;
}
pub trait Processor: Subscriber<Input = Self::Input> {
//~^ ERROR unsupported cyclic reference between types/traits detected [E0391]
type Input;
}
fn main() {}

19
src/test/run-pass/issue-20825.rs Normal file
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// Copyright 2015 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.
pub trait Subscriber {
type Input;
}
pub trait Processor: Subscriber<Input = <Self as Processor>::Input> {
type Input;
}
fn main() {}