use strict;
use warnings;

my @array = qw( a b c d e );

sub test {
   return @array;
}

(test())[0] = '!';

__END__
Can't modify list slice in scalar assignment at script.pl line 10, near "'!';"

##</code><code>##

use strict;
use warnings;

my @array = qw( a b c d e );

sub test {
   return @array;
}

test() = qw( A B C D E );

__END__
Can't modify non-lvalue subroutine call in scalar assignment at script.pl line 10, near "qw( A B C D E );"

##</code><code>##

use strict;
use warnings;

my @array = qw( a b c d e );

sub test {
   return @array;
}

my $aref = \(test());
@{$aref} = qw( A B C D E );

__END__
Not an ARRAY reference at script.pl line 11.

##</code><code>##

use strict;
use warnings;

my @array = qw( a b c d e );

sub test {
   return @array;
}

sub test2(@) {
   print(scalar @{$_[0]}, "\n");
}

test2(test());

__END__
Can't use string ("a") as an ARRAY ref while "strict refs" in use at script.pl line 11.