A serious poll? What's happened? Has perlmonks been taken over by the lizard people?
I voted "none", because I believe this would not be a good idea. Attempting to dereference something that isn't a reference is a sign that you've done something wrong and that you have a bug - maybe you passed the wrong parameter to a function, or you forgot to check a return value. Papering over the cracks will just make your code harder to debug.
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