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After years of programming, I havent had a situation where reasonable malloc or new would fail (maybe because my mallocs are trully reasonable), though I always check for it.
In my case, apps should gracefully (i hope) close with an appropriate log entry. What would you do in this case? Its interesting to hear your approach – do you wait for resources or close the shop?
There’s pretty much nothing you can do if dynamic allocation fails- there are pretty much no operations written to handle that situation. If it fails, then just let the app crash.