src/test/compile-fail/issue-2063.rs


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// Copyright 2012-2014 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.

// test that autoderef of a type like this does not
// cause compiler to loop.  Note that no instances
// of such a type could ever be constructed.

use std::marker::MarkerTrait;

struct t(Box<t>); //~ ERROR this type cannot be instantiated

trait to_str_2 : MarkerTrait {
    fn my_to_string() -> String;
}

// I use an impl here because it will cause
// the compiler to attempt autoderef and then
// try to resolve the method.
impl to_str_2 for t {
    fn my_to_string() -> String { "t".to_string() }
}

fn new_t(x: t) {
    x.my_to_string(); //~ ERROR does not implement
}

fn main() {
}