Wrong suggestion for slice patterns when using let-else statement · Issue #92069 · rust-lang/rust (original) (raw)

Given the following code: Playground link

#![feature(let_else)]

fn main() { let v = vec![1, 2, 3]; let [a, b, c] = v else { panic!(); }; }

The current output is:

error[E0529]: expected an array or slice, found `Vec<{integer}>`
 --> src/main.rs:5:9
  |
5 |     let [a, b, c] = v else {
  |         ^^^^^^^^^ pattern cannot match with input type `Vec<{integer}>`
  |
help: consider slicing here
  |
5 ~     let [a, b, c] = v else {
6 +         panic!();
7 +     };[..]
  |

The [..] should be added to the v, not after the whole statement.