GCC: The customer has nuclear weapons. They do not do “bounty”
Cray/HPE, presumably, has a contract to provide support to the customer with nuclear weapons. If this fix is necessary to that contract, Cray/HPE should set the bounty needed to get it done as part of the necessary cost of fulfilling their contract (if they didn't figure it in, and it's not a cost-plus contract, and it cuts into the profit margin, well, that's the risk you take with fixed-cost contracting.) Free Software may often tend to be free-as-in-beer as well as free-as-in-speech but, where it is, that is as is. If you have special, and especially time-sensitive, needs that aren't as is, you pay someone to do it. It's not a gratis support contract with response time guarantees. As Cray/HPE ought to be well aware, that kind of support is expensive, and doesn't happen if no one is paying.