RS.CLIPPY.CAST_ABS_TO_UNSIGNED

Casting the result of `abs()` to an unsigned integer can panic

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: cast_abs_to_unsigned. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Checks for usage of the abs() method that cast the result to unsigned.

Why is this bad?

The unsigned_abs() method avoids panic when called on the MIN value.

Example

let x: i32 = -42;
let y: u32 = x.abs() as u32;

Use instead:

let x: i32 = -42;
let y: u32 = x.unsigned_abs();

Configuration

msrv: The minimum rust version that the project supports. Defaults to the rust-version field in Cargo.toml

(default: current version)