| // Copyright 2013 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. |
| |
| /* |
| # ICE when returning struct with reference to trait |
| |
| A function which takes a reference to a trait and returns a |
| struct with that reference results in an ICE. |
| |
| This does not occur with concrete types, only with references |
| to traits. |
| */ |
| |
| |
| // original |
| trait Inner { |
| fn print(&self); |
| } |
| |
| impl Inner for isize { |
| fn print(&self) { print!("Inner: {}\n", *self); } |
| } |
| |
| struct Outer<'a> { |
| inner: &'a (Inner+'a) |
| } |
| |
| impl<'a> Outer<'a> { |
| fn new(inner: &Inner) -> Outer { |
| Outer { |
| inner: inner |
| } |
| } |
| } |
| |
| pub fn main() { |
| let inner: isize = 5; |
| let outer = Outer::new(&inner as &Inner); |
| outer.inner.print(); |
| } |
| |
| |
| // minimal |
| pub trait MyTrait<T> { |
| fn dummy(&self, t: T) -> T { panic!() } |
| } |
| |
| pub struct MyContainer<'a, T:'a> { |
| foos: Vec<&'a (MyTrait<T>+'a)> , |
| } |
| |
| impl<'a, T> MyContainer<'a, T> { |
| pub fn add (&mut self, foo: &'a MyTrait<T>) { |
| self.foos.push(foo); |
| } |
| } |