It wouldn't matter would it? The bot makes a whole lot of $1 bids and finds no sellers, life carries on.
For bots that might want to sell the stock this would likely be a large enough jump to trip a circuit breaker.
But really this was a display bug. It's possible some bot is still using 32 bit unsigned ints internally, but it would have to be pretty badly designed since this issue has been obvious and a long time coming.
Bot behavior under improbable scenarios is a function of its author's paranoia. I'm sure you're right about the vast majority of bots, but I'll be much more amused than surprised if it happens
You don't even actually match up buyers and sellers on the public markets anymore for stocks. Individuals (from retail to institutional investors) buy and sell to market makers; later, when settling, market makers will pair up with brokers when clearing the funds.
So it'd be up to the market makers to not fuck up and sell at $1. If not, it's their liability.
For bots that might want to sell the stock this would likely be a large enough jump to trip a circuit breaker.
But really this was a display bug. It's possible some bot is still using 32 bit unsigned ints internally, but it would have to be pretty badly designed since this issue has been obvious and a long time coming.