You're looking for B::Deparse. In fact, you have the usage almost correct, except instead of printcode the method is called coderef2text.

use B::Deparse;

sub somecode {
    do { print "some stuff\n" }
}

my $somevar = B::Deparse->new();
print $somevar->coderef2text(\&somecode);

[download]

However you might want to read the docs, as B::Deparse is still in development and contains some caveats.

In reply to Re: Printing the code of a coderef by Trizor
in thread Printing the code of a coderef by Anonymous Monk

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