#!/usr/bin/env perl
# Core Modules
use strict;
use warnings;

open my $fh, '<', 'datei_die_nicht_existiert' or do {
    require Carp;
    Carp::confess "asd";
};
close $fh;

sidburn@vs166101:~$ perl -V | grep "revision"
Summary of my perl5 (revision 5 version 8 subversion 8) configuration:
sidburn@vs166101:~$ ./require.pl 
asd at ./require.pl line 8

sidburn@sid:~/perl$ perl -V | grep "revision"
Summary of my perl5 (revision 5 version 10 subversion 0) configuration:
sidburn@sid:~/perl$ ./require.pl 
String found where operator expected at ./require.pl line 8, near "Carp::confess "asd""
	(Do you need to predeclare Carp::confess?)
syntax error at ./require.pl line 8, near "Carp::confess "asd""
Execution of ./require.pl aborted due to compilation errors.

Carp::confess("asd")