use if $/ = "\n", 5.012 => qw( say );

--output:--
Can't locate 5.012.pm in @INC (@INC contains: /Users/7stud/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0/darwin-2level /Users/7stud/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0 /Users/7stud/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0/darwin-2level /Users/7stud/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0 .) at /Users/7stud/perl5/perlbrew/perls/perl-5.16.0/lib/5.16.0/if.pm line 13.
BEGIN failed--compilation aborted at 2.pl line 1.