40 lines
1.0 KiB
Rust
40 lines
1.0 KiB
Rust
// 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.
|
|
|
|
type a<'a> = &'a int;
|
|
type b<'a> = @a<'a>;
|
|
|
|
struct c<'a> {
|
|
f: @b<'a>
|
|
}
|
|
|
|
trait set_f<'a> {
|
|
fn set_f_ok(&self, b: @b<'a>);
|
|
fn set_f_bad(&self, b: @b);
|
|
}
|
|
|
|
impl<'a> set_f<'a> for c<'a> {
|
|
fn set_f_ok(&self, b: @b<'a>) {
|
|
self.f = b;
|
|
}
|
|
|
|
fn set_f_bad(&self, b: @b) {
|
|
self.f = b; //~ ERROR mismatched types: expected `@@&'a int` but found `@@&int`
|
|
//~^ ERROR cannot infer
|
|
}
|
|
}
|
|
|
|
fn main() {}
|