1 // Copyright 2015 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.
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.
11 // Test to see that the element type of .cloned() can be inferred
12 // properly. Previously this would fail to deduce the type of `sum`.
14 // pretty-expanded FIXME #23616
18 use std::iter::AdditiveIterator;
20 fn square_sum(v: &[i64]) -> i64 {
21 let sum = v.iter().cloned().sum();
26 assert_eq!(36, square_sum(&[1,2,3]));