rust-clippy/tests/ui/modulo_arithmetic_integral_const.rs
2023-08-22 17:18:11 +02:00

76 lines
3.8 KiB
Rust

#![warn(clippy::modulo_arithmetic)]
#![allow(
clippy::no_effect,
clippy::unnecessary_operation,
clippy::modulo_one,
clippy::identity_op
)]
fn main() {
// Lint when both sides are const and of the opposite sign
-1 % 2;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1 % -2;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
(1 - 2) % (1 + 2);
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 3`
//~| NOTE: double check for expected result especially when interoperating with differ
(1 + 2) % (1 - 2);
//~^ ERROR: you are using modulo operator on constants with different signs: `3 % -1`
//~| NOTE: double check for expected result especially when interoperating with differ
35 * (7 - 4 * 2) % (-500 * -600);
//~^ ERROR: you are using modulo operator on constants with different signs: `-35 % 30
//~| NOTE: double check for expected result especially when interoperating with differ
-1i8 % 2i8;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1i8 % -2i8;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
-1i16 % 2i16;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1i16 % -2i16;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
-1i32 % 2i32;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1i32 % -2i32;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
-1i64 % 2i64;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1i64 % -2i64;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
-1i128 % 2i128;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1i128 % -2i128;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
-1isize % 2isize;
//~^ ERROR: you are using modulo operator on constants with different signs: `-1 % 2`
//~| NOTE: double check for expected result especially when interoperating with differ
1isize % -2isize;
//~^ ERROR: you are using modulo operator on constants with different signs: `1 % -2`
//~| NOTE: double check for expected result especially when interoperating with differ
// No lint when both sides are const and of the same sign
1 % 2;
-1 % -2;
(1 + 2) % (-1 + 2);
(-1 - 2) % (1 - 2);
1u8 % 2u8;
1u16 % 2u16;
1u32 % 2u32;
1u64 % 2u64;
1u128 % 2u128;
1usize % 2usize;
}