rust/tests/ui/inference/iterator-sum-array-15673.rs

//! Regression test for https://github.com/rust-lang/rust/issues/15673

//@ run-pass
#![allow(stable_features)]

#![feature(iter_arith)]

fn main() {
    let x: [u64; 3] = [1, 2, 3];
    assert_eq!(6, (0..3).map(|i| x[i]).sum::<u64>());
}
comments 2025-07-24 19:07:20 +05:00			`//! Regression test for https://github.com/rust-lang/rust/issues/15673`

Add `// run-pass` annotations to all the tests under `ui/run-pass/`. (I may have accidentally added it to some auxilliary crates as well; my emacs-macro-based methodology was pretty crude.) 2018-08-30 14:18:55 +02:00			`//@ run-pass`
Add `#![allow(..)]` for a slew of lints of migrated run-pass tests, to silence stderr output. 2018-08-31 15:02:01 +02:00			`#![allow(stable_features)]`

Fallout in tests and docs from feature renamings 2015-06-10 13:33:52 -07:00			`#![feature(iter_arith)]`
Require feature attributes, and add them where necessary 2015-03-05 18:33:58 -08:00
Add tests for a few resolved issues 2014-10-02 21:52:06 +02:00			`fn main() {`
Allow use of `[_ ; n]` syntax for fixed length and repeating arrays. This does NOT break any existing programs because the `[_, ..n]` syntax is also supported. 2014-12-20 15:20:51 +13:00			`let x: [u64; 3] = [1, 2, 3];`
Make `sum` and `product` inherent methods on `Iterator` In addition to being nicer, this also allows you to use `sum` and `product` for iterators yielding custom types aside from the standard integers. Due to removing the `AdditiveIterator` and `MultiplicativeIterator` trait, this is a breaking change. [breaking-change] 2015-04-06 17:43:50 +02:00			`assert_eq!(6, (0..3).map(\|i\| x[i]).sum::<u64>());`
Add tests for a few resolved issues 2014-10-02 21:52:06 +02:00			`}`