rust/clippy_tests/examples/identity_op.rs

31 lines
611 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, double_parens)]
#[warn(identity_op)]
fn main() {
let x = 0;
x + 0;
x + (1 - 1);
x + 1;
0 + x;
1 + x;
x - ZERO; //no error, as we skip lookups (for now)
x | (0);
((ZERO)) | x; //no error, as we skip lookups (for now)
x * 1;
1 * x;
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;
}