pow(0) crash

[blynn]

Raising an element of bls12381::FP12 to the power of 0 crashes.

For example:

extern crate core;
use core::bls12381::fp12::FP12;
use core::bls12381::big::BIG;

fn main() {
    let mut g = FP12::new();
    g.one();
    let mut z = BIG::new();
    z.one();
    println!("{}", g.pow(&z).tostring());
    z.zero();
    println!("{}", g.pow(&z).tostring());
}

crashes on the last line with:

thread 'main' panicked at 'index out of bounds: the len is 7 but the index is 318047311615681924', src/bls12381/big.rs:526:13

[mcarrickscott]

Good catch, thanks..

[mcarrickscott]

Now fixed..