So you meant to say: ignore the possibility of this happening because it is extremely unlikely, too complex to handle and your time is better spent fixing much

So you meant to say: ignore the possibility of this happening because it is extremely unlikely, too complex to handle and your time is better spent fixing much ore serious bugs that the users report. Silly engineering like what you suggest is a waste of time. Non-critical applications that are allowed to crash (every normal desktop app) would end up overengineered and unmaintainable. Embedded systems that must give guarantees about their reliability simplify system design drastically. One of the things going out the window first is dynamic memory allocation. It has too many failure modes.