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$ perl -MO=Deparse -le " use 5.010; "
BEGIN { $/ = "\n"; $\ = "\n"; }
sub BEGIN {
    require 5.01;
}
-e syntax OK

$ perl -MO=Deparse -le " use 5.010; state $fudge; "
...
use feature ':5.10';
state $fudge;
-e syntax OK