28 lines
630 B
Rust
28 lines
630 B
Rust
|
// check-pass
|
||
|
|
|
||
|
|
#![warn(unused_must_use)]
|
||
|
|
#![feature(never_type)]
|
||
|
|
|
||
|
|
use std::ops::Add;
|
||
|
|
use std::ops::Sub;
|
||
|
|
use std::ops::Mul;
|
||
|
|
use std::ops::Div;
|
||
|
|
use std::ops::Rem;
|
||
|
|
|
||
|
|
fn main() {
|
||
|
|
let x = 2_u32;
|
||
|
|
(x.add(4), x.sub(4), x.mul(4), x.div(4), x.rem(4));
|
||
|
|
|
||
|
|
x.add(4); //~ WARN unused return value of `add` that must be used
|
||
|
|
|
||
|
|
x.sub(4); //~ WARN unused return value of `sub` that must be used
|
||
|
|
|
||
|
|
x.mul(4); //~ WARN unused return value of `mul` that must be used
|
||
|
|
|
||
|
|
x.div(4); //~ WARN unused return value of `div` that must be used
|
||
|
|
|
||
|
|
x.rem(4); //~ WARN unused return value of `rem` that must be used
|
||
|
|
|
||
|
|
println!("{}", x);
|
||
|
|
}
|