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// Copyright 2012 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.
#![feature(managed_boxes)]
// Check that we correctly infer that b and c must be region
// parameterized because they reference a which requires a region.
use std::gc::Gc;
type a<'a> = &'a int;
type b<'a> = Gc<a<'a>>;
struct c<'a> {
f: Gc<b<'a>>
}
trait set_f<'a> {
fn set_f_ok(&self, b: Gc<b<'a>>);
fn set_f_bad(&self, b: Gc<b>);
}
impl<'a> set_f<'a> for c<'a> {
fn set_f_ok(&self, b: Gc<b<'a>>) {
self.f = b;
}
fn set_f_bad(&self, b: Gc<b>) {
self.f = b; //~ ERROR mismatched types: expected `@@&'a int` but found `@@&int`
//~^ ERROR cannot infer
}
}
fn main() {}
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