I need some expert's opinion on this: When I try to use the boost 1.32.0 in my work env, if i don't define this flag BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP, the lib/smart_ptr/test/intrusive_ptr_test.cpp fails to compile. if i do define it, my compiler would be happy (HP aCC) on intrusive_ptr_test. My questions are: 1) What is the BOOST_NO_ARGUMENT_DEPENDENT_LOOKUP? 2) What will be the other impacts if I do define it in my code globally besides the intrusive_ptr_test? Thanks in advance! Kevin Lee ----------------------------------------- This message and its attachments may contain privileged and confidential information. If you are not the intended recipient(s), you are prohibited from printing, forwarding, saving or copying this email. If you have received this e-mail in error, please immediately notify the sender and delete this e-mail and its attachments from your computer.