src/test/ui/rust-2021/array-into-iter-ambiguous.rs

   1 // See https://github.com/rust-lang/rust/issues/88475
   2 // run-rustfix
   3 // edition:2018
   4 // check-pass
   5 #![warn(array_into_iter)]
   6 #![allow(unused)]
   7
   8 struct FooIter;
   9
  10 trait MyIntoIter {
  11     fn into_iter(self) -> FooIter;
  12 }
  13
  14 impl<T, const N: usize> MyIntoIter for [T; N] {
  15     fn into_iter(self) -> FooIter {
  16         FooIter
  17     }
  18 }
  19
  20 struct Point;
  21
  22 pub fn main() {
  23     let points: [Point; 1] = [Point];
  24     let y = points.into_iter();
  25     //~^ WARNING trait method `into_iter` will become ambiguous in Rust 2021
  26     //~| WARNING this changes meaning in Rust 2021
  27 }