File: intersection-patterns-2.rs

package info (click to toggle)
rustc 1.86.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid
  • size: 913,560 kB
  • sloc: xml: 158,127; python: 35,921; javascript: 19,689; sh: 19,600; cpp: 18,906; ansic: 13,124; asm: 4,376; makefile: 708; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (20 lines) | stat: -rw-r--r-- 677 bytes parent folder | download | duplicates (11)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
// This tests the parser recovery in `recover_intersection_pat`
// and serves as a regression test for the diagnostics issue #65400.
//
// The general idea is that for `$pat_lhs @ $pat_rhs` where
// `$pat_lhs` is not generated by `ref? mut? $ident` we want
// to suggest either switching the order or note that intersection
// patterns are not allowed.

fn main() {
    let s: Option<u8> = None;

    match s {
        Some(x) @ Some(y) => {}
        //~^ ERROR left-hand side of `@` must be a binding
        //~| interpreted as a pattern, not a binding
        //~| also a pattern
        //~| NOTE bindings are `x`, `mut x`, `ref x`, and `ref mut x`
        _ => {}
    }
}