4fc0452ace
The `print!` and `println!` macros are now the preferred method of printing, and so there is no reason to export the `stdio` functions in the prelude. The functions have also been replaced by their macro counterparts in the tutorial and other documentation so that newcomers don't get confused about what they should be using.
61 lines
1.3 KiB
Rust
61 lines
1.3 KiB
Rust
// Copyright 2013 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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/*
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# ICE when returning struct with reference to trait
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A function which takes a reference to a trait and returns a
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struct with that reference results in an ICE.
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This does not occur with concrete types, only with references
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to traits.
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*/
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// original
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trait Inner {
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fn print(&self);
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}
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impl Inner for int {
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fn print(&self) { print!("Inner: {}\n", *self); }
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}
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struct Outer<'a> {
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inner: &'a Inner
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}
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impl<'a> Outer<'a> {
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fn new<'r>(inner: &'r Inner) -> Outer<'r> {
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Outer {
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inner: inner
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}
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}
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}
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pub fn main() {
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let inner = 5;
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let outer = Outer::new(&inner as &Inner);
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outer.inner.print();
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}
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// minimal
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trait MyTrait<T> { }
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pub struct MyContainer<'a, T> {
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foos: ~[&'a MyTrait<T>],
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}
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impl<'a, T> MyContainer<'a, T> {
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pub fn add (&mut self, foo: &'a MyTrait<T>) {
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self.foos.push(foo);
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}
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}
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