Hey Robert, I guess that is possible. I have no idea *why* it is not getting instantiated though so I wouldn't know where to start. Any suggestions? In any case, what part of the standard says that the return type should be instantiated? I read the part referenced in register_archive.hpp (temp.dep.candidate) but I can't see how to interpret that as "must instantiate the return type." Also, it turns out that base_object also has a regression which may be related. I had to explicitly instantiate void_cast_register to get the test to pass. Robert Ramey wrote:
Look at the code - It's not just SunCC
template <class Archive, class Serializable> struct ptr_serialization_support { # if defined(BOOST_MSVC) virtual BOOST_DLLEXPORT void instantiate() BOOST_USED; # elif defined(__BORLANDC__) static BOOST_DLLEXPORT void instantiate() BOOST_USED; enum { x = sizeof(instantiate(),3) }; # else static BOOST_DLLEXPORT void instantiate() BOOST_USED; typedef instantiate_function< &ptr_serialization_support::instantiate
x; # endif };
Can we not find some bit of magic to make SunCC instatiate that whic is needed?
Robert Ramey
Sohail Somani wrote:
From version 1.34 to 1.35, the export of classes was modified so that all the archives did not need to be included before calls to BOOST_CLASS_EXPORT. I don't know why this was a problem to begin with.
Anyway, this feature used to work on SunCC but with the new changes, there is a regression. This is caused by the dependence on ADL to instantiate the ptr_serialization_support members: SunCC just doesn't do it. So the instantiations never occur and you get an assertion failure when running the serialization tests under debug:
Assertion failed: it != boost::serialization::singleton< oserializer_map<Archive> >::get_const_instance().end(), file vendor/boost_1_37_0/boost/archive/impl/archive_pointer_oseri\ alizer.ipp, line 64
I know how to fix it (instantiating manually for each Archive,Serializable pair, not a huge problem).
I would suggest that Boost Serialization should have a fallback mechanism for these compilers. Perhaps along the lines of the old export functionality where the user would define the archives they are interested in.
Thoughts?
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-- Sohail Somani http://uint32t.blogspot.com