Re: Unexpected plperl difference between 8.4 and 9.1

On Sun, Aug 19, 2012 at 2:26 PM, Joel Jacobson <joel(at)trustly(dot)com> wrote:

> After upgrading from 8.4 to 9.1, one of my plperl functions stopped
> working properly.
>
> For some reason, when matching a string using a regex, the $1 variable
> cannot be returned directly using return_next() but must be
> set to a variable first.
> If returned directly, it appears to be cached in some strange way,
> returning the same value for all 10 rows in the example below.
>
>
Hrm seems to work for me. What version of perl is this?
$ perl -V
Summary of my perl5 (revision 5 version 16 subversion 0) configuration:
[snip]
Characteristics of this binary (from libperl):
Compile-time options: HAS_TIMES MYMALLOC PERLIO_LAYERS
PERL_DONT_CREATE_GVSV PERL_MALLOC_WRAP
PERL_PRESERVE_IVUV USE_64_BIT_ALL USE_64_BIT_INT
USE_LARGE_FILES USE_LOCALE USE_LOCALE_COLLATE
USE_LOCALE_CTYPE USE_LOCALE_NUMERIC USE_PERLIO
USE_PERL_ATOF
$!psql
baroque=> SELECT version();
version

---------------------------------------------------------------------------------------------------------
PostgreSQL 9.1.5 on x86_64-unknown-linux-gnu, compiled by gcc (GCC) 4.7.1
20120721 (prerelease), 64-bit
(1 row)

baroque=> CREATE OR REPLACE FUNCTION test1() RETURNS SETOF NUMERIC AS $BODY$
baroque$> use strict;
baroque$> use warnings;
baroque$> for(my $i=0 ; $i<10; $i++) {
baroque$> my $rand = rand();
baroque$> $rand =~ m/(.*)/;
baroque$> return_next($1);
baroque$> }
baroque$> return;
baroque$> $BODY$ LANGUAGE plperl;
CREATE FUNCTION
baroque=>
baroque=> select * from test1();
test1
-------------------
0.284491935120062
0.213769321886019
0.758221121077565
0.810816779589864
0.649781285447791
0.630792307420037
0.17897035660857
0.876314955338863
0.899575315174307
0.225134707347706
(10 rows)