Does nothing. Was it supposed to do anything?

Update (200201092354+0100)
It does print "Dave", but it didn't when I first tried, because I copy/pasted the code and didn't remove the "+" sign (p+rint), because I was using a monochrome terminal :)

2;0 juerd@ouranos:~$ perl -e'undef christmas'
Segmentation fault
2;139 juerd@ouranos:~$
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