$ perl -v | head -2 | tail -1
This is perl 5, version 24, subversion 0 (v5.24.0) built for darwin-thread-multi-2level

##</code><code>##

#!/usr/bin/env perl -l

use strict;
use warnings;

my $x = [qw{test string}];

print $x->@*;
print "$x->@*";

##</code><code>##

teststring
ARRAY(0x7fc63c005498)->@*

##</code><code>##

use 5.024;

##</code><code>##

use feature qw{postderef_qq};

##</code><code>##

teststring
test string

##</code><code>##

$ perl -v | head -2 | tail -1
This is perl 5, version 20, subversion 0 (v5.20.0) built for darwin-thread-multi-2level

##</code><code>##

Array found where operator expected at ./pm_1174734_postderef.pl line 11, at end of line
	(Missing operator before ?)
syntax error at ./pm_1174734_postderef.pl line 11, near "->@*"
Execution of ./pm_1174734_postderef.pl aborted due to compilation errors.

##</code><code>##

use warnings;
no warnings qw{experimental::postderef};
use feature qw{postderef postderef_qq};

##</code><code>##

teststring
test string

##</code><code>##

Perl v5.20.0 required--this is only v5.18.0, stopped at ...
BEGIN failed--compilation aborted at ...

##</code><code>##

Unknown warnings category 'experimental::postderef' at ...
BEGIN failed--compilation aborted at ...