You don't want require. You want do. Quoting perlfunc:
do 'stat.pl'; is just like scalar eval `cat stat.pl`; except that it's more efficient and concise, keeps track of the current filename for error messages, searches the @INC libraries, and updates %INC if the file is found.
Assuming some_code.pl is 
die +{ foo => 1 };

[download]
you can easily test that it does what you want: 
do 'some_code.pl';
print ref $@ if $@;

=output

HASH

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You should not fiddle with pointers. What if a future revision somewhere in a different place, likely made by a different maintainer who is not aware of your trickery, undoes the guarantee for the hash's refcount? There's a reason that module is in the Devel:: namespace. I'd be wary of any production code that uses it.

Makeshifts last the longest.

In reply to Re: Extracting a hash reference from a string (not) by Aristotle
in thread Extracting a hash reference from a string by Anonymous Monk

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