#!/usr/bin/perl
use strict;
use warnings;

$|=1;

print "1\n"; 


sub caller_args {             # NB: renamed
    my ($level) = @_;
    {
        package DB;
        () = caller( ( $level || 0 ) + 1 );
    }
    wantarray ? @DB::args : [@DB::args]; 
      # NB: returning a ref \@DB::args was dangerous
}

sub tst {
    local $\="\n";
    print "\@_ = @_";
    print "called_args = ", join (" ", caller_args(0));
}

tst(1..3);