m_meshes is a std::vector< boost::shared_ptr<const Mesh> > in the code below, and Mesh is constructible from a const std::string& BOOST_FOREACH( const std::string& fileName, meshFiles ) { m_meshes.push_back( boost::make_shared<Mesh>(fileName) ); } Using make_shared here gives me the following error, while explicitly constructing a shared_ptr does not. Mesh isn't defined with __declspec(align('16')), but I believe it owns a member that is. Am I doing something wrong or is this a known limitation of make_shared? Also, I am using MSVC9 if that wasn't obvious. 1>C:\Work\redshirt\third_party\boost\1_42_0\boost/smart_ptr/detail/sp_counted_impl.hpp(138) : error C2719: 'd': formal parameter with __declspec(align('16')) won't be aligned 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/smart_ptr/detail/shared_count.hpp(124) : see reference to class template instantiation 'boost::detail::sp_counted_impl_pd<P,D>' being compiled 1> with 1> [ 1> P=rs::Mesh *, 1> D=boost::detail::sp_ms_deleter<rs::Mesh> 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/smart_ptr/shared_ptr.hpp(199) : see reference to function template instantiation 'boost::detail::shared_count::shared_count<Y*,D>(P,D)' being compiled 1> with 1> [ 1> Y=rs::Mesh, 1> D=boost::detail::sp_ms_deleter<rs::Mesh>, 1> P=rs::Mesh * 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/smart_ptr/make_shared.hpp(181) : see reference to function template instantiation 'boost::shared_ptr<T>::shared_ptr<T,boost::detail::sp_ms_deleter<T>>(Y *,D)' being compiled 1> with 1> [ 1> T=rs::Mesh, 1> Y=rs::Mesh, 1> D=boost::detail::sp_ms_deleter<rs::Mesh> 1> ] 1> C:\Work\redshirt\components\rs/renderer/Model.hpp(46) : see reference to function template instantiation 'boost::shared_ptr<T> boost::make_shared<rs::Mesh,std::string>(const A1 &)' being compiled 1> with 1> [ 1> T=rs::Mesh, 1> A1=std::string 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/access.hpp(101) : see reference to function template instantiation 'void rs::Model::load<Archive>(Archive &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/split_member.hpp(54) : see reference to function template instantiation 'void boost::serialization::access::member_load<Archive,T>(Archive &,T &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/split_member.hpp(53) : while compiling class template member function 'void boost::serialization::detail::member_loader<Archive,T>::invoke(Archive &,T &,const unsigned int)' 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/split_member.hpp(69) : see reference to class template instantiation 'boost::serialization::detail::member_loader<Archive,T>' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\components\rs/renderer/Model.hpp(50) : see reference to function template instantiation 'void boost::serialization::split_member<Archive,rs::Model>(Archive &,T &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/access.hpp(118) : see reference to function template instantiation 'void rs::Model::serialize<Archive>(Archive &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/serialization.hpp(74) : see reference to function template instantiation 'void boost::serialization::access::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/serialization/serialization.hpp(133) : see reference to function template instantiation 'void boost::serialization::serialize<Archive,T>(Archive &,T &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/iserializer.hpp(186) : see reference to function template instantiation 'void boost::serialization::serialize_adl<Archive,T>(Archive &,T &,const unsigned int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/iserializer.hpp(170) : while compiling class template member function 'void boost::archive::detail::iserializer<Archive,T>::load_object_data(boost::archive::detail::basic_iarchive &,void *,const unsigned int) const' 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/iserializer.hpp(386) : see reference to class template instantiation 'boost::archive::detail::iserializer<Archive,T>' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/iserializer.hpp(433) : see reference to function template instantiation 'void boost::archive::detail::load_non_pointer_type<Archive>::load_standard::invoke<T>(Archive &,const T &)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/iserializer.hpp(580) : see reference to function template instantiation 'void boost::archive::detail::load_non_pointer_type<Archive>::invoke<T>(Archive &,T &)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/common_iarchive.hpp(68) : see reference to function template instantiation 'void boost::archive::load<Archive,T>(Archive &,T &)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/basic_xml_iarchive.hpp(86) : see reference to function template instantiation 'void boost::archive::detail::common_iarchive<Archive>::load_override<T>(T &,int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/xml_iarchive.hpp(80) : see reference to function template instantiation 'void boost::archive::basic_xml_iarchive<Archive>::load_override<rs::Model>(const boost::serialization::nvp<T> &,int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ] 1> C:\Work\redshirt\third_party\boost\1_42_0\boost/archive/detail/interface_iarchive.hpp(61) : see reference to function template instantiation 'void boost::archive::xml_iarchive_impl<Archive>::load_override<T>(T &,int)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=const boost::serialization::nvp<rs::Model> 1> ] 1> ..\..\..\..\components\libs\renderer\source\Model.cpp(20) : see reference to function template instantiation 'Archive &boost::archive::detail::interface_iarchive<Archive>::operator >><const boost::serialization::nvp<T>>(const boost::serialization::nvp<T> &)' being compiled 1> with 1> [ 1> Archive=boost::archive::xml_iarchive, 1> T=rs::Model 1> ]