Why is this an issue?

Using redundant bit masks in comparisons can be misleading because the bit mask does not alter the result of the comparison. This makes the code harder to read and understand. It may also suggest incorrect logic or purpose, increasing the risk of errors.

Code examples

Noncompliant code example

let x = 1;
if (x | 2 > 3) { // Noncompliant: Bitwise OR with 1 is redundant in this context
}

Compliant solution

let x = 1;
if (x > 3) { // Compliant: Simplifies the comparison by removing redundant bit operation
}

Resources

Documentation

• Clippy Lints - https://rust-lang.github.io/rust-clippy/master/index.html#ineffective_bit_mask