#![warn(clippy::modulo_one)] #![allow(clippy::no_effect, clippy::unnecessary_operation, clippy::identity_op)] static STATIC_ONE: usize = 2 - 1; static STATIC_NEG_ONE: i64 = 1 - 2; fn main() { 10 % 1; //~^ ERROR: any number modulo 1 will be 0 //~| NOTE: `-D clippy::modulo-one` implied by `-D warnings` 10 % -1; //~^ ERROR: any number modulo -1 will panic/overflow or result in 0 10 % 2; // also caught by rustc i32::MIN % (-1); //~^ ERROR: this operation will panic at runtime //~| NOTE: `#[deny(unconditional_panic)]` on by default //~| ERROR: any number modulo -1 will panic/overflow or result in 0 const ONE: u32 = 1 * 1; const NEG_ONE: i64 = 1 - 2; const INT_MIN: i64 = i64::MIN; 2 % ONE; //~^ ERROR: any number modulo 1 will be 0 // NOT caught by lint 5 % STATIC_ONE; 2 % NEG_ONE; //~^ ERROR: any number modulo -1 will panic/overflow or result in 0 // NOT caught by lint 5 % STATIC_NEG_ONE; // also caught by rustc INT_MIN % NEG_ONE; //~^ ERROR: this operation will panic at runtime //~| ERROR: any number modulo -1 will panic/overflow or result in 0 // ONLY caught by rustc INT_MIN % STATIC_NEG_ONE; //~^ ERROR: this operation will panic at runtime }