Re: [Boost-users] [Boost][Serialization] Possible Bug in Optional.hpp

From: Robert Ramey (ramey_at_[hidden])
Date: 2007-08-22 12:10:55

clearly its a bug but it shouldn't affect any programs, I'll fix it in my working copy.  You can fix it by just initializing to 0.

Robert Ramey

  "Marc Viala" <mviala_at_[hidden]> wrote in message news:D0D608FD34E14C4BA93A30AC162651E18BA519_at_SERVEUR2003.acticm.com...
  I've downloaded recently the version Boost 1.34.1 and performed some tests on ours applications integrating Boost components. 

   

  During theses tests, I've tried to deserialize some XML archives generated w/ Boost 1.33.1 including some boost::optional<> instances and I've observed that the Visual C++ 7.1 IDE emits run-time checks in the load<boost::optional<>>()  @ line 60 in file boost/serialization/optional.hpp.

   

  template<class Archive, class T>

  void load(

      Archive & ar, 

      boost::optional<T> & t, 

      const unsigned int /*version*/

  ){

      bool tflag;

      ar >> boost::serialization::make_nvp("initialized", tflag);

      if (tflag){

          unsigned int v;

          if(3 < ar.get_library_version()){

              ar >> make_nvp("item_version", v);

          }

          detail::stack_construct<Archive, T> aux(ar, v);             

                     ^^^^^^^^^^^^^^^^^^^^^^^^

  Here Run-Time Check Failure #3 - The variable 'v' is being used without being defined.

   

          ar >> boost::serialization::make_nvp("value", aux.reference());

          t.reset(aux.reference());

      }

      else {

          t.reset();

      }

  }

   

  Is it possible to avoid this run-time check by a preinitialisation of the local variable "v"? Is it a Bug? 

   

  Best regards,

   

  Used Configurations:

  Windows XP

           Boost 1.34.1 (through Boost Installer w/ DLL libraries)

   

  Marc Viala 

   

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