33 lines
1015 B
Rust
33 lines
1015 B
Rust
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// 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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// Test for a potential corner case in current impl where you have an
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// auto trait (Magic1) that depends on a normal trait (Magic2) which
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// in turn depends on the auto trait (Magic1). This was incorrectly
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// being considered coinductive, but because of the normal trait
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// interfering, it should not be.
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#![feature(optin_builtin_traits)]
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trait Magic1: Magic2 { }
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impl Magic1 for .. {}
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trait Magic2 { }
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impl<T: Magic1> Magic2 for T { }
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fn is_magic1<T: Magic1>() { }
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#[derive(Debug)]
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struct NoClone;
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fn main() {
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is_magic1::<NoClone>();
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}
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