rust/tests/ui/absurd-extreme-comparisons.rs

#![feature(plugin)]
#![plugin(clippy)]

#![deny(absurd_extreme_comparisons)]
#![allow(unused, eq_op, no_effect, unnecessary_operation)]

fn main() {
    const Z: u32 = 0;

    let u: u32 = 42;

    u <= 0;


    u <= Z;


    u < Z;


    Z >= u;


    Z > u;


    u > std::u32::MAX;


    u >= std::u32::MAX;


    std::u32::MAX < u;


    std::u32::MAX <= u;



    1-1 > u;


    u >= !0;


    u <= 12 - 2*6;



    let i: i8 = 0;
    i < -127 - 1;


    std::i8::MAX >= i;


    3-7 < std::i32::MIN;



    let b = false;
    b >= true;


    false > b;



    u > 0; // ok

    // this is handled by unit_cmp
    () < {};
}

use std::cmp::{Ordering, PartialEq, PartialOrd};

#[derive(PartialEq, PartialOrd)]
pub struct U(u64);

impl PartialEq<u32> for U {
    fn eq(&self, other: &u32) -> bool {
        self.eq(&U(*other as u64))
    }
}
impl PartialOrd<u32> for U {
    fn partial_cmp(&self, other: &u32) -> Option<Ordering> {
        self.partial_cmp(&U(*other as u64))
    }
}

pub fn foo(val: U) -> bool {
    val > std::u32::MAX
}