| // Copyright 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. |
| |
| // Issue #5886: a complex instance of issue #2687. |
| |
| trait Iterator<A> { |
| fn next(&mut self) -> Option<A>; |
| } |
| |
| trait IteratorUtil<A>: Sized |
| { |
| fn zip<B, U: Iterator<U>>(self, other: U) -> ZipIterator<Self, U>; |
| } |
| |
| impl<A, T: Iterator<A>> IteratorUtil<A> for T { |
| fn zip<B, U: Iterator<B>>(self, other: U) -> ZipIterator<T, U> { |
| //~^ ERROR the requirement `U: Iterator<B>` appears on the impl method |
| ZipIterator{a: self, b: other} |
| } |
| } |
| |
| struct ZipIterator<T, U> { |
| a: T, b: U |
| } |
| |
| fn main() {} |
