Overflow on num::rational::Ratio

[klutzy]

use std::i64::MIN;
use:num::rational::Ratio;

let a = Ratio::new(1, MIN);

Here a actually is -1 / MIN due to overflow in reduce():

        // keep denom positive!
        if self.denom < Zero::zero() {
            self.numer = -self.numer;
            self.denom = -self.denom;
        }

[rust-highfive]

This issue has been moved to the RFCs repo: rust-lang/rfcs#338

[rust-highfive]

This issue has been moved to the RFCs repo: rust-num/num#12