tests/ui/rust-2021/array-into-iter-ambiguous.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27

// See https://github.com/rust-lang/rust/issues/88475
// run-rustfix
// edition:2018
// check-pass
#![warn(array_into_iter)]
#![allow(unused)]

struct FooIter;

trait MyIntoIter {
    fn into_iter(self) -> FooIter;
}

impl<T, const N: usize> MyIntoIter for [T; N] {
    fn into_iter(self) -> FooIter {
        FooIter
    }
}

struct Point;

pub fn main() {
    let points: [Point; 1] = [Point];
    let y = points.into_iter();
    //~^ WARNING trait method `into_iter` will become ambiguous in Rust 2021
    //~| WARNING this changes meaning in Rust 2021
}