perl Makefile.PL
make
make test

# and what would happen is this:

08:28:20 [alex : macachu : ~/.cpan/build/XML-Encoding-1.01]
[40] $ make test
PERL_DL_NONLAZY=1 /bin/perl -Iblib/arch -Iblib/lib -I/usr/local/lib/perl5/5.6.0/ppc-linux-thread -I/usr/local/lib/perl5/5.6.0 test.pl
1..7
ok 1
ok 2
ok 3
ok 4
ok 5
ok 6
ok 7
make: *** [test_dynamic] Segmentation fault (core dumped)

##</code><code>##

my $err = $@;

unless ($err and $err =~ /^Len plus byte > 256/) {
  print "not ";
}
print "ok 7\n";

##</code><code>##

"print "ok 7\n";

# to...

print "ok 7\n"; exit 0;