我正在从OpenCL序列化cl_long2类型，它是这样定义的（从/usr/include/CL/cl_platform.hpp简化而来）：
typedef int64_t cl_long;
typedef union
{
cl_long __attribute__ ((aligned(16))) s[2];
struct{ cl_long x, y; };
struct{ cl_long s0, s1; };
struct{ cl_long lo, hi; };
} cl_long2;
我定义了以下独立的序列化函数：
namespace boost{ namespace serialization {
template<class Archive> void serialize(Archive &ar, cl_long2 &i, const unsigned version){
ar & make_nvp("x",i.x);
ar & make_nvp("y",i.y);
}
}};
当我编译代码时，它作为类成员从调用cl_long2的序列化，我得到了以下错误，我无法理解（如果它不是std::vector<cl_long2>，只是一个独立变量，则错误是相同的）：
/usr/include/boost/archive/detail/check.hpp: In function ‘void boost::archive::detail::check_object_level() [with T = cl_long2]’:
/usr/include/boost/archive/detail/iserializer.hpp:438:9: instantiated from ‘static void boost::archive::detail::load_non_pointer_type<Archive>::invoke(Archive&, T&) [with T = cl_long2, Archive = boost::archive::xml_iarchive]’
/usr/include/boost/archive/detail/iserializer.hpp:592:5: instantiated from ‘void boost::archive::load(Archive&, T&) [with Archive = boost::archive::xml_iarchive, T = cl_long2]’
/usr/include/boost/archive/detail/common_iarchive.hpp:66:9: instantiated from ‘void boost::archive::detail::common_iarchive<Archive>::load_override(T&, int) [with T = cl_long2, Archive = boost::archive::xml_iarchive]’
/usr/include/boost/archive/basic_xml_iarchive.hpp:86:9: instantiated from ‘void boost::archive::basic_xml_iarchive<Archive>::load_override(const boost::serialization::nvp<T>&, int) [with T = cl_long2, Archive = boost::archive::xml_iarchive]’
/usr/include/boost/archive/xml_iarchive.hpp:93:9: instantiated from ‘void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = const boost::serialization::nvp<cl_long2>, Archive = boost::archive::xml_iarchive]’
/usr/include/boost/archive/detail/interface_iarchive.hpp:60:9: [ skipping 5 instantiation contexts ]
/usr/include/boost/serialization/split_free.hpp:58:9: instantiated from ‘static void boost::serialization::free_loader<Archive, T>::invoke(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = std::vector<cl_long2>]’
/usr/include/boost/serialization/split_free.hpp:74:5: instantiated from ‘void boost::serialization::split_free(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = std::vector<cl_long2>]’
/usr/include/boost/serialization/vector.hpp:151:5: instantiated from ‘void boost::serialization::serialize(Archive&, std::vector<U, Allocator>&, unsigned int) [with Archive = boost::archive::xml_iarchive, U = cl_long2, Allocator = std::allocator<cl_long2>]’
/usr/include/boost/serialization/serialization.hpp:128:9: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::xml_iarchive, T = std::vector<cl_long2>]’
/usr/include/boost/archive/detail/iserializer.hpp:188:5: instantiated from ‘void boost::archive::detail::iserializer<Archive, T>::load_object_data(boost::archive::detail::basic_iarchive&, void*, unsigned int) const [with Archive = boost::archive::xml_iarchive, T = std::vector<cl_long2>]’
myFile.cpp:368:2: instantiated from here
/usr/include/boost/archive/detail/check.hpp:60:5: error: static assertion failed: "typex::value"
无论存档类型是xml还是二进制，都会出现相同的错误。我正在使用boost:：serialization 1.46。
有什么提示吗？
**编辑：包含错误的较小示例位于http://ideone.com/4UgCn
如果您查看断言失败的行（detail/check.hpp:60），它上面有一条注释：
// trap attempts to serialize objects marked
// not_serializable
BOOST_STATIC_ASSERT(typex::value);
这个"not_serializable"特性的文档表明，必须首先启用这个long2类型。正如你所发现的，这是由完成的
BOOST_CLASS_IMPLEMENTATION(long2,boost::serialization::object_serializable)