Allen Yao wrote:
inline void basic_oarchive_impl::save_pointer( basic_oarchive & ar, const void * t, const basic_oserializer_pointer & bos_ptr ){ ... ar << class_name_type(key); // This line causes an error message said that // boost::noncopyable's ctor is private. Strange! ... }
See: http://gcc.gnu.org/bugs.html#cxx_rvalbind which explains the problem. In a nutshell: ------------------------------------- struct A : boost::noncopyable {}; void foo(const A& a); foo(A()); // ill-formed ------------------------------------- but it used to be accepted, and it is still (wrongly) accepted by many compilers. Also I suggest you to have a look at http://gcc.gnu.org/gcc-3.4/changes.html to see the main changes in GCC 3.4.0 that affects C++ code. -- Giovanni Bajo