#!/usr/bin/perl

use strict;
use warnings;

my @log="\n";

BEGIN {
    $SIG{__WARN__}=sub {
            push(@log,"@_");
             };
    $SIG{__DIE__}=sub {
            push(@log,"@_");
             };
     } # BEGIN
END {
    if (@log) {
        print @log;
         };
     } # END

warn "a warning ";
my $warning="just another warning\n";
warn $warning." ";
die "death by request";