$>perl test4.pl
$VAR1 = bless( {
                 '' => {
                         'length' => 14,
                         'mask' => 'iZ10',
                         'tag' => 'send',
                         'buffers' => [
                                        \undef,
                                        \undef
                                      ]
                       },
                 'prevpass' => ${$VAR1->{''}{'buffers'}[1]},
                 'answer' => ${$VAR1->{''}{'buffers'}[0]}
               }, 'C::Include::Struct' );
Size of struct send: 14 bytes
Size of unsigned long: 4 bytes
00000000:  01 00 00 00 30 31 32 33 ¦ 34 35 36 37 38 00         
   012345678

$>