File: cannot-mutably-deref-shared-ref.rs

package info (click to toggle)
rustc 1.88.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 934,128 kB
  • sloc: xml: 158,127; python: 36,062; javascript: 19,855; sh: 19,700; cpp: 18,947; ansic: 12,993; asm: 4,792; makefile: 690; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (23 lines) | stat: -rw-r--r-- 728 bytes parent folder | download | duplicates (12)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
//@ edition: 2024
//@ revisions: classic2024 structural2024
//! Test that `&mut` patterns don't match shared reference types under new typing rules in Rust 2024
#![allow(incomplete_features)]
#![cfg_attr(classic2024, feature(ref_pat_eat_one_layer_2024))]
#![cfg_attr(structural2024, feature(ref_pat_eat_one_layer_2024_structural))]

pub fn main() {
    let &mut _ = &&0;
    //~^ ERROR: mismatched types

    let &mut _ = &&&&&&&&&&&&&&&&&&&&&&&&&&&&0;
    //~^ ERROR: mismatched types

    let &mut _ = &&mut 0;
    //~^ ERROR: mismatched types

    let &mut _ = &&&&&&&&&&&&&&&&&&&&&&&&&&&&mut 0;
    //~^ ERROR: mismatched types

    let &mut &mut &mut &mut _ = &mut &&&&mut &&&mut &mut 0;
    //~^ ERROR: mismatched types
}