Re: [Boost-users] 1.33 pointer to object serialization

From: Robert Ramey (ramey_at_[hidden])
Date: 2005-07-20 12:35:30

> const gps_position* g_ptr = new gps_position(35, 59, 24.567f);
> oa << g_ptr;

Actually I believe the following will work.

const gps_position * const g_ptr = new gps_position(35, 59, 24.567f);
oa << g_ptr;

I've come to agree although this is a correct rendition of my original
intent it is a little tooooo obscure and I will look into alterhing this.

Robert Ramey

Chris Coleman wrote:
> Robert Ramey wrote:
>
>> What is zz_memory ?  is it by any chance typedef for something else.
>> Since it is a const but still being rejected, it would seem to marked
>> "track_never".  If not explicity so marked, it might be a typedef
>> for some primitive like ?
>>
> previously:
>
>> Why didn't your just change the above to?:
>>
>> const gps_position* p_g = new gps_position(35, 59, 24.567f);
>> oa << p_g;  // causes the error's below
>>
>>
> Ok,
>
> Going back to the gps_position example from the manual,
> http://www.boost.org/libs/serialization/doc/tutorial.html#simplecase
>
> If I change nothing other than what is below, then:
>
> const gps_position* g_ptr = new gps_position(35, 59, 24.567f);
> oa << g_ptr;
>
> gives us:
>
> cqc$ g++ -o test.o -c test.cpp
> /usr/local/include/boost/archive/detail/oserializer.hpp: In function
> 'void boost::archive::save(Archive&, T&) [with Archive =
> boost::archive::text_oarchive, T = const gps_position*]':
> /usr/local/include/boost/archive/basic_text_oarchive.hpp:78:
> instantiated from 'void
> boost::archive::basic_text_oarchive<Archive>::save_override(T&, int)
> [with T = const gps_position*, Archive =
> boost::archive::text_oarchive]'
> /usr/local/include/boost/archive/detail/interface_oarchive.hpp:85:
> instantiated from 'Archive&
> boost::archive::detail::interface_oarchive<Archive>::operator<<(T&)
> [with T = const gps_position*, Archive =
> boost::archive::text_oarchive]' test.cpp:43:   instantiated from here
> /usr/local/include/boost/archive/detail/oserializer.hpp:560: error:
> invalid application of 'sizeof' to incomplete type
> 'boost::STATIC_ASSERTION_FAILURE<false>'
>
> Also:
>
> gps_position* g_ptr = new gps_position(35, 59, 24.567f);
> oa << g_ptr;
>
> and:
>
> gps_position* g_ptr = new gps_position(35, 59, 24.567f);
> oa << *g_ptr;
>
> Both result in a STATIC_ASSERT failure, with T = gps_position*, and
> gps_position respectively.
>
> The only case I can get to compile is:
>
> const gps_position* g_ptr = new gps_position(35, 59, 24.567f);
> oa << *g_ptr;
>
> In my code zz_memory is just a plain base class, its tracking is not
> changed, I have done some project wide searches for the tracking
> macros
> and none exist, however the gps example is totaly fundamental and
> still won't compile.
>
> Cheers
> Chris
>
>
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