Hi, When I compile code that uses the 1.48.0 serialization library with icpc 12.3.174, I get this warning, along with screenfuls of instantiation context: /n/home00/pjonsson/include/boost/serialization/extended_type_info_typeid.hpp(134): warning #191: type qualifier is meaningless on cast type static_cast<T const * const>(p) ^ This is the offending code: virtual void destroy(void const * const p) const { boost::serialization::access::destroy( static_cast<T const * const>(p) ); The compiler is complaining (correctly, I think) that you can't dictate whether something returned by value (here, the T const *) is const or not. Changing the cast to: static_cast<T const *>(p) makes the warning go away. Perhaps someone can make this change? Regards, /Patrik J.