31 lines
902 B
Rust
31 lines
902 B
Rust
#![feature(plugin)]
|
|
#![plugin(clippy)]
|
|
|
|
const ONE : i64 = 1;
|
|
const NEG_ONE : i64 = -1;
|
|
const ZERO : i64 = 0;
|
|
|
|
#[allow(eq_op, no_effect, unnecessary_operation)]
|
|
#[deny(identity_op)]
|
|
fn main() {
|
|
let x = 0;
|
|
|
|
x + 0; //~ERROR the operation is ineffective
|
|
x + (1 - 1); //~ERROR the operation is ineffective
|
|
x + 1;
|
|
0 + x; //~ERROR the operation is ineffective
|
|
1 + x;
|
|
x - ZERO; //no error, as we skip lookups (for now)
|
|
x | (0); //~ERROR the operation is ineffective
|
|
((ZERO)) | x; //no error, as we skip lookups (for now)
|
|
|
|
x * 1; //~ERROR the operation is ineffective
|
|
1 * x; //~ERROR the operation is ineffective
|
|
x / ONE; //no error, as we skip lookups (for now)
|
|
|
|
x / 2; //no false positive
|
|
|
|
x & NEG_ONE; //no error, as we skip lookups (for now)
|
|
-1 & x; //~ERROR the operation is ineffective
|
|
}
|