File: issue-45107-unnecessary-unsafe-in-closure.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 (25 lines) | stat: -rw-r--r-- 610 bytes parent folder | download | duplicates (22) 
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
 
#[deny(unused_unsafe)]
fn main() {
    let mut v = Vec::<i32>::with_capacity(24);

    unsafe {
        let f = |v: &mut Vec<_>| {
            unsafe { //~ ERROR unnecessary `unsafe`
                v.set_len(24);
                |w: &mut Vec<u32>| { unsafe { //~ ERROR unnecessary `unsafe`
                    w.set_len(32);
                } };
            }
            |x: &mut Vec<u32>| { unsafe { //~ ERROR unnecessary `unsafe`
                x.set_len(40);
            } };
        };

        v.set_len(0);
        f(&mut v);
    }

    |y: &mut Vec<u32>| { unsafe {
        y.set_len(48);
    } };
}