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1 | // Copyright 2012 The Rust Project Developers. See the COPYRIGHT |
2 | // file at the top-level directory of this distribution and at | |
3 | // http://rust-lang.org/COPYRIGHT. | |
4 | // | |
5 | // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or | |
6 | // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license | |
7 | // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your | |
8 | // option. This file may not be copied, modified, or distributed | |
9 | // except according to those terms. | |
10 | ||
1a4d82fc JJ |
11 | #![feature(box_syntax)] |
12 | ||
13 | extern crate collections; | |
14 | ||
15 | use std::collections::HashMap; | |
16 | ||
85aaf69f SL |
17 | trait Map<K, V> |
18 | { | |
19 | fn get(&self, k: K) -> V { panic!() } | |
20 | } | |
1a4d82fc JJ |
21 | |
22 | impl<K, V> Map<K, V> for HashMap<K, V> {} | |
223e47cc LB |
23 | |
24 | // Test that trait types printed in error msgs include the type arguments. | |
25 | ||
26 | fn main() { | |
1a4d82fc JJ |
27 | let x: Box<HashMap<isize, isize>> = box HashMap::new(); |
28 | let x: Box<Map<isize, isize>> = x; | |
c34b1796 AL |
29 | // FIXME (#22405): Replace `Box::new` with `box` here when/if possible. |
30 | let y: Box<Map<usize, isize>> = Box::new(x); | |
54a0048b | 31 | //~^ ERROR `Box<Map<isize, isize>>: Map<usize, isize>` is not satisfied |
223e47cc | 32 | } |