Hello, I upgraded the boost library in my workstation from boost 1.33.1 to boost 1.36.0. When I compiled my program, I got following errors, /usr/include/boost/detail/sp_counted_impl.hpp:192: error: template argument 3 is invalid /usr/include/boost/detail/sp_counted_impl.hpp:198: error: 'a' has not been declared /usr/include/boost/detail/sp_counted_impl.hpp: In constructor 'boost::detail::sp_counted_impl_pda

::sp_counted_impl_pda(P, D, int)':

/usr/include/boost/detail/sp_counted_impl.hpp:198: error: 'a' was not declared in this scope /usr/include/boost/detail/sp_counted_impl.hpp: In member function 'virtual void boost::detail::sp_counted_impl_pda

::destroy()':

/usr/include/boost/detail/sp_counted_impl.hpp:209: error: expected nested-name-specifier before 'template' /usr/include/boost/detail/sp_counted_impl.hpp:209: error: expected unqualified-id before 'template' /usr/include/boost/detail/sp_counted_impl.hpp:211: error: 'A2' was not declared in this scope /usr/include/boost/detail/sp_counted_impl.hpp:211: error: expected `;' before 'a2' /usr/include/boost/detail/sp_counted_impl.hpp:214: error: 'a2' was not declared in this scope I'm using gcc 4.1.2. Below is the file sp_counted_impl.hpp line 181 ~ 221, template class sp_counted_impl_pda: public sp_counted_base { private: P p_; // copy constructor must not throw D d_; // copy constructor must not throw A a_; // copy constructor must not throw sp_counted_impl_pda( sp_counted_impl_pda const & ); sp_counted_impl_pda & operator= ( sp_counted_impl_pda const & ); typedef sp_counted_impl_pda this_type; //This is the line 192 public: // pre: d( p ) must not throw sp_counted_impl_pda( P p, D d, A a ): p_( p ), d_( d ), a_( a ) { } virtual void dispose() // nothrow { d_( p_ ); } virtual void destroy() // nothrow { typedef typename A::template rebind< this_type >::other A2; A2 a2( a_ ); this->~this_type(); a2.deallocate( this, 1 ); } virtual void * get_deleter( detail::sp_typeinfo const & ti ) { return ti == BOOST_SP_TYPEID( D )? &reinterpret_cast( d_ ): 0; } }; Please help to see how to resolve these errors. Best regards, Hua