#!/usr/bin/perl -w

use diagnostics;
use strict;

{
    my $cache = [Foo->new];
    sub access_cache {
        return @$cache;
    }
}

foreach (&access_cache()) {
    print "before: ", ref($_), "\n";
    print "object: ", $_, "\n";
    print "after:  ", ref($_), "\n";
    print "\n";
}

foreach (&access_cache()) {
    print "before: ", ref($_), "\n";
    print "object: ", $_, "\n";
    print "after:  ", ref($_), "\n";
    print "\n";
}

package Foo;
sub new {bless [], $_[0]};
use overload '""' => sub {$_[0] = Bar->new; return $_[0]->[0]};

package Bar;
sub new {bless ['barbar'], $_[0]};
use overload '""' => sub {return $_[0]->[0]};

##</code><code>##

before: Foo
object: barbar
after:  Bar

before: Foo
object: barbar
after:  Bar

##</code><code>##

before: Foo
object: barbar
after:  Bar

before: Bar
object: barbar
after:  Bar