File: must-use-block-expr.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg3-1
  • links: PTS, VCS
  • area: main
  • in suites: experimental, forky, sid, trixie
  • size: 893,396 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; perl: 29; lisp: 29; ruby: 19; sql: 11
file content (36 lines) | stat: -rw-r--r-- 439 bytes parent folder | download | duplicates (6) 
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
26
27
28
29
30
31
32
33
34
35
36
 
//@ run-rustfix
//@ check-pass

#![warn(unused_must_use)]

#[must_use]
fn foo() -> i32 {
    42
}

fn bar() {
    {
        foo();
        //~^ WARN unused return value
    }
}

fn baz() {
    {
        foo()
        //~^ WARN unused return value
    };
}

fn main() {
    bar();
    baz();
    {
        1 + 2;
        //~^ WARN unused arithmetic operation
    }
    {
        1 + 2
        //~^ WARN unused arithmetic operation
    };
}