36 lines
1.0 KiB
Rust
36 lines
1.0 KiB
Rust
// Copyright 2012 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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// pretty-expanded FIXME #23616
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trait A { fn a(&self) -> isize; }
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trait B: A { fn b(&self) -> isize; }
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trait C: A { fn c(&self) -> isize; }
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struct S { bogus: () }
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impl A for S { fn a(&self) -> isize { 10 } }
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impl B for S { fn b(&self) -> isize { 20 } }
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impl C for S { fn c(&self) -> isize { 30 } }
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// Multiple type params, multiple levels of inheritance
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fn f<X:A,Y:B,Z:C>(x: &X, y: &Y, z: &Z) {
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assert_eq!(x.a(), 10);
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assert_eq!(y.a(), 10);
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assert_eq!(y.b(), 20);
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assert_eq!(z.a(), 10);
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assert_eq!(z.c(), 30);
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}
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pub fn main() {
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let s = &S { bogus: () };
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f(s, s, s);
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}
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