| // run-pass |
| #![allow(dead_code)] |
| #![allow(unused_imports)] |
| // Corrected regression test for #20831. The original did not compile. |
| // When fixed, it revealed another problem concerning projections that |
| // appear in associated type bindings in object types, which were not |
| // being properly flagged. |
| |
| // pretty-expanded FIXME #23616 |
| |
| use std::ops::{Shl, Shr}; |
| use std::cell::RefCell; |
| |
| pub trait Subscriber { |
| type Input; |
| |
| fn dummy(&self) { } |
| } |
| |
| pub trait Publisher<'a> { |
| type Output; |
| fn subscribe(&mut self, _: Box<dyn Subscriber<Input=Self::Output> + 'a>); |
| } |
| |
| pub trait Processor<'a> : Subscriber + Publisher<'a> { } |
| |
| impl<'a, P> Processor<'a> for P where P : Subscriber + Publisher<'a> { } |
| |
| struct MyStruct<'a> { |
| sub: Box<dyn Subscriber<Input=u64> + 'a> |
| } |
| |
| impl<'a> Publisher<'a> for MyStruct<'a> { |
| type Output = u64; |
| fn subscribe(&mut self, t : Box<dyn Subscriber<Input=u64> + 'a>) { |
| self.sub = t; |
| } |
| } |
| |
| fn main() {} |