dbf994bbaf
associated machinery. Future such attempts should go through lints anyhow. There is a fair amount of fallout in the compile-fail tests, as WF checking now occurs earlier in the process.
38 lines
848 B
Rust
38 lines
848 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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fn main() {
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let x = X(15);
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let y = x.foo();
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println!("{:?}",y);
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}
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trait Foo
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where for<'a> &'a Self: Bar
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{
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fn foo<'a>(&'a self) -> <&'a Self as Bar>::Output;
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}
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trait Bar {
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type Output;
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}
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struct X(i32);
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impl<'a> Bar for &'a X {
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type Output = &'a i32;
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}
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impl Foo for X {
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fn foo<'a>(&'a self) -> <&'a Self as Bar>::Output {
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&self.0
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}
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}
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