Re: [Boost-users] [boost.serialization] compiler warnings

From: Robert Ramey (ramey_at_[hidden])
Date: 2007-01-16 21:41:41

Double check that you're compiling with the switch that uses an intrinsic
type for wchar_t rather than a short int.

Note that a lot of the warnings are from boost::io::state_saver... so maybe
there is an issue there.

Robert Ramey

jsanga_at_[hidden] wrote:
> I have been experimenting with the boost serialization library. It
> seems to do what I need. I am using Boost_1_33_1 and Microsoft's VC8
> compiler.  When I create a simple little program, I'm getting a lot
> of compiler warnings even at the /w3 level. Could compiler switches
> or installation configuration be the problem?
>
> #include "stdafx.h"
> #include <iostream>
> #include <vector>
> #include <string>
> #include <sstream>
>
> #include <boost/archive/text_woarchive.hpp>
> #include <boost/serialization/vector.hpp>
>
> typedef std::vector<std::wstring>              VCT_WSTR;
>
> struct Foo {
>   VCT_WSTR          vws;
>
> private:
>   // Take care of serializing the class
>   friend class boost::serialization::access;
>   template< class Archive > void serialize( Archive &ar, unsigned int
> ver ); };
> BOOST_CLASS_VERSION ( Foo, 1 )
>
> template< class Archive >
> void Foo::serialize( Archive &ar, unsigned int /* ver */ )
> {
>   ar & vws;
> }
>
> // text archive
> void Test1( const Foo &foo )
> {
>   unsigned int flags = boost::archive::no_header |
>      boost::archive::no_codecvt |
>      boost::archive::no_xml_tag_checking;
>
>   std::wstringstream wos;
>   boost::archive::text_woarchive oa(wos,flags);
>
>   oa & foo;
>   std::wcout << L"Foo is " << wos.str() << L"\n";
>
>   wos.str(L"");  // reset the output stream
>
>   oa & foo;
>   std::wcout << L"Foo is " << wos.str() << L"\n";
> }
>
> int _tmain(int argc, _TCHAR* argv[])
> {
>   argc; argv;
>
>   // Set up some recognizable values
>   Foo foo;
>   for( size_t i=0; i < 5; ++i )
>      foo.vws.push_back( L"Big String for vws" );
>
>   Test1( foo );
>   return 0;
> }
>
> Compiler options are:
> /O2 /I "D:\Boost_1_33_1" /D "WIN32" /D "NDEBUG" /D "_CONSOLE" /D
> "_SCL_SECURE_NO_DEPRECATE" /D "_UNICODE" /D "UNICODE" /FD /EHsc /MD
> /Yu"stdafx.h" /Fp"Release\Test.pch" /Fo"Release\\"
> /Fd"Release\vc80.pdb" /W4 /nologo /c /Wp64 /Zi /TP
> /errorReport:prompt
>
> Sample of Warnings (at /w4)
>
> ------ Build started: Project: Test, Configuration: Release Win32
> ------ 
> Compiling...
> Test.cpp
> D:\Boost_1_33_1\boost/io/ios_state.hpp(52) : warning C4512:
>        'boost::io::ios_flags_saver' : assignment operator could not
> be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(32) : see
> declaration of 'boost::io::ios_flags_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(75) : warning C4512:
>        'boost::io::ios_precision_saver' : assignment operator could
> not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(55) : see
> declaration of 'boost::io::ios_precision_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(98) : warning C4512:
>        'boost::io::ios_width_saver' : assignment operator could not
> be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(78) : see
> declaration of 'boost::io::ios_width_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(275) : warning C4512:
>        'boost::io::ios_iword_saver' : assignment operator could not
> be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(253) : see
> declaration of 'boost::io::ios_iword_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(300) : warning C4512:
>        'boost::io::ios_pword_saver' : assignment operator could not
> be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(278) : see
> declaration of 'boost::io::ios_pword_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(330) : warning C4512:
>        'boost::io::ios_base_all_saver' : assignment operator could
> not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(306) : see
> declaration of 'boost::io::ios_base_all_saver'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(406) : warning C4512:
>        'boost::io::ios_all_word_saver' : assignment operator could
> not be generated D:\Boost_1_33_1\boost/io/ios_state.hpp(382) : see
> declaration of 'boost::io::ios_all_word_saver'
> D:\Boost_1_33_1\boost/serialization/void_cast.hpp(127) : warning
>        C4512: 'boost::serialization::void_cast_detail::void_caster' :
> assignment operator could not be generated
> D:\Boost_1_33_1\boost/serialization/void_cast.hpp(91) : see
> declaration of 'boost::serialization::void_cast_detail::void_caster'
> D:\Boost_1_33_1\boost/io/ios_state.hpp(246) : warning C4512:
>        'boost::io::basic_ios_locale_saver<Ch>' : assignment operator
>        could not be generated with [
>            Ch=wchar_t
>        ]
>        D:\Boost_1_33_1\boost/archive/basic_text_oprimitive.hpp(75) :
>        see reference to class template instantiation
>        'boost::io::basic_ios_locale_saver<Ch>' being compiled with [
>            Ch=wchar_t
>        ]
>        D:\Boost_1_33_1\boost/archive/text_woarchive.hpp(45) : see
>        reference to class template instantiation
>        'boost::archive::basic_text_oprimitive<OStream>' being
>            compiled with [ OStream=std::wostream
>        ]
>        D:\Boost_1_33_1\boost/archive/text_woarchive.hpp(99) : see
> reference to class template instantiation
> 'boost::archive::text_woarchive_impl<Archive>' being compiled
> D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(118) : warning
>        C4100: 'flags' : unreferenced formal parameter
>        D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(118) :
>        while compiling class template member function 'bool
>
>
>        boost::archive::detail::oserializer<Archive,T>::tracking(const
>        unsigned int) const' with [
>        Archive=boost::archive::text_woarchive, T=Foo ]
>        D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(264) :
>            see reference to class template instantiation
>            'boost::archive::detail::oserializer<Archive,T>' being
>        compiled with [ Archive=boost::archive::text_woarchive, T=Foo ]
>        D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(263) :
>        while compiling class template member function 'void
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> boost::archive::detail::save_non_pointer_type<Archive,T>::save_standard::invoke(Archive
> &,const Foo &)' with [ Archive=boost::archive::text_woarchive, T=Foo
> ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(322) : see
> reference to class template instantiation
> 'boost::archive::detail::save_non_pointer_type<Archive,T>::save_standard'
> being compiled with [ Archive=boost::archive::text_woarchive, T=Foo ]
> D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(310) : while
> compiling class template member function 'void
> boost::archive::detail::save_non_pointer_type<Archive,T>::invoke(Archive
> &,const Foo &)' with [ Archive=boost::archive::text_woarchive, T=Foo
> ] D:\Boost_1_33_1\boost/archive/detail/oserializer.hpp(536) : see
> reference to class template instantiation
> 'boost::archive::detail::save_non_pointer_type<Archive,T>' being
> compiled with [ Archive=boost::archive::text_woarchive, T=Foo ]
> D:\Boost_1_33_1\boost/archive/basic_text_oarchive.hpp(78) : see
> reference to function template instantiation 'void
> boost::archive::save<Archive,const T>(Archive &,const T &)' being
> compiled with [ Archive=boost::archive::text_woarchive, T=const Foo ]
> D:\Boost_1_33_1\boost/archive/detail/interface_oarchive.hpp(78) : see
> reference to function template instantiation 'void
> boost::archive::basic_text_oarchive<Archive>::save_override<T>(T
> &,int)' being compiled with [ Archive=boost::archive::text_woarchive,
> T=const Foo ]
> D:\Boost_1_33_1\boost/archive/detail/interface_oarchive.hpp(86) : see
> reference to function template instantiation 'Archive
> &boost::archive::detail::interface_oarchive<Archive>::operator
> <<<T>(T &)' being compiled with [
> Archive=boost::archive::text_woarchive, T=const Foo ] .\Test.cpp(60)
> : see reference to function template instantiation 'Archive
> &boost::archive::detail::interface_oarchive<Archive>::operator
> &<const Foo>(T &)' being compiled with [
> Archive=boost::archive::text_woarchive, T=const Foo ]
>
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