#!/usr/bin/perl

use Storable qw(nstore_fd fd_retrieve);
use IO::Zlib;
use Data::Dumper;

my $test = { foo => "bar" };

my $fh = IO::Zlib->new("out.gz", "wb");
nstore_fd($test, $fh);
$fh->close;

my $fh2 = IO::Zlib->new("out.gz", "rb");
my $href = fd_retrieve($fh2);
$fh2->close;

print Dumper $href;

##</code><code>##

perl -MIO::Zlib -e '$fh = IO::Zlib->new("test.gz", "wb"); print fileno($fh)' 

##</code><code>##

sub AUTOLOAD
{ print "AUTOLOAD(@_)\n";
    my $self = shift;
print $self, " $AUTOLOAD\n@{[caller]}\n";
    $AUTOLOAD =~ s/.*:://;
    $AUTOLOAD =~ tr/a-z/A-Z/;

    return tied(*{$self})->$AUTOLOAD(@_);
}

##</code><code>##

$ perl -MIO::Zlib -e '$fh = IO::Zlib->new("test.gz", "wb"); print fileno($fh)'
AUTOLOAD(IO::Zlib=HASH(0x81e8b30))
IO::Zlib=HASH(0x81e8b30) IO::Zlib::FILENO 
main -e 1
Not a GLOB reference at /usr/lib/perl5/site_perl/5.8.0/IO/Zlib.pm line 566.

##</code><code>##

$ perl -MIO::Zlib -e '$fh = IO::Zlib->new("test.gz", "wb"); print $fh->fileno'
AUTOLOAD(IO::Zlib=GLOB(0x8124538))
IO::Zlib=GLOB(0x8124538) IO::Zlib::fileno
main -e 1
AUTOLOAD(IO::Zlib=HASH(0x81e8b3c))
IO::Zlib=HASH(0x81e8b3c) IO::Zlib::ILENO
IO::Zlib /usr/lib/perl5/site_perl/5.8.0/IO/Zlib.pm 566
Not a GLOB reference at /usr/lib/perl5/site_perl/5.8.0/IO/Zlib.pm line 566.