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use Carp qw/cluck/; sub myprintf { ... Use of uninitialized value in printf at - line 5. Use of uninitialized value in printf at - line 5. quz--baz-
use Carp; ... main::dive(HASH(0x9e47a4), "this", "is", "an", "example") called a +t - line 23 Use of uninitialized value in printf at - line 23. <>