Hi,
An example in the PG documentation gives an error:
http://www.postgresql.org/docs/9.1/interactive/plperl-global.html
CREATE OR REPLACE FUNCTION myfuncs() RETURNS void AS $$ $_SHARED{myquote} = sub { my $arg = shift; $arg
=~s/(['\\])/\\$1/g; return "'$arg'"; };
$$ LANGUAGE plperl;
SELECT myfuncs(); /* initializes the function */
ERROR: PL/Perl function must return reference to hash or array
CONTEXT: PL/Perl function "myfuncs"
Not sure if this is now an expected behaviour. Is it? Accordingly, I
can open this in pgsql-bugs or put this issue in pgsql-docs.