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1 | // Copyright 2012-2014 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 | ||
11 | // Test that when instantiating trait default methods, typeck handles | |
12 | // lifetime parameters defined on the method bound correctly. | |
13 | ||
14 | ||
15 | pub trait Foo { | |
16 | fn bar<'a, I: Iterator<Item=&'a ()>>(&self, it: I) -> usize { | |
17 | let mut xs = it.filter(|_| true); | |
18 | xs.count() | |
19 | } | |
20 | } | |
21 | ||
22 | pub struct Baz; | |
23 | ||
24 | impl Foo for Baz { | |
25 | // When instantiating `Foo::bar` for `Baz` here, typeck used to | |
26 | // ICE due to the lifetime parameter of `bar`. | |
27 | } | |
28 | ||
29 | fn main() { | |
30 | let x = Baz; | |
31 | let y = vec!((), (), ()); | |
32 | assert_eq!(x.bar(y.iter()), 3); | |
33 | } |