Boost序列化：存檔「不支持的版本」異常

Question

當我試圖通過文本存檔反序列化一些以前用升級版本序列化的數據（1.46到serialize和1.38到反序列化）時，Iv'e得到了這個異常......是有一種方法降級（在代碼中）的序列化？像「set_library_version」的東西？謝謝...

Answer 1

請參閱Error read binary archive, created by old boost version郵件歸檔關於序列化錯誤。

它說，下面的代碼做這項工作

void load_override(version_type & t, int version){ 
     library_version_type lvt = this->get_library_version(); 
     if(boost::archive::library_version_type(7) < lvt){ 
      this->detail_common_iarchive::load_override(t, version); 
     } 
     else 
     if(boost::archive::library_version_type(6) < lvt){ 
      uint_least16_t x=0; 
      * this->This() >> x; 
      t = boost::archive::version_type(x); 
     } 
     else 
     if(boost::archive::library_version_type(3) == lvt || boost::archive::library_version_type(5) == lvt){ 
#pragma message("CTMS fix for serialization bug (lack of backwards compatability) introduced by boost 1.45.") 
      // upto 255 versions 
      unsigned char x=0; 
      * this->This() >> x; 
      t = version_type(x); 
     } 
     else{ 
      unsigned int x=0; 
      * this->This() >> x; 
      t = boost::archive::version_type(x); 
     } 
    }