-#ifndef DATA_BLOCK_0_H
-#define DATA_BLOCK_0_H
+#ifndef DATA_BLOCK_0_HH
+#define DATA_BLOCK_0_HH
#include <vector>
#include <string>
{
friend tape_block * tape_block::gen_from_fd(int,void(*)(void*),
void(*)(void*),void*);
-private:
+protected:
data_block_0(data_block&);
public: