| // run-pass | |
| #![allow(stable_features)] | |
| // Test to see that the element type of .cloned() can be inferred | |
| // properly. Previously this would fail to deduce the type of `sum`. | |
| #![feature(iter_arith)] | |
| fn square_sum(v: &[i64]) -> i64 { | |
| let sum: i64 = v.iter().cloned().sum(); | |
| sum * sum | |
| } | |
| fn main() { | |
| assert_eq!(36, square_sum(&[1,2,3])); | |
| } |