compile-c-c++ ..\..\..\bin.v2\libs\atomic\build\msvc-9.0\debug\threading-multi\lockpool.obj lockpool.cpp D:\dev\checkouts\boost-trunk\boost/atomic/detail/interlocked.hpp(125) : error C2039: 'platform_cmpxchg32' : is not a member of 'boost::atomics::detail' D:\dev\checkouts\boost-trunk\boost/atomic/detail/interlocked.hpp(125) : error C3861: 'platform_cmpxchg32': identifier not found D:\dev\checkouts\boost-trunk\boost/atomic/detail/interlocked.hpp(127) : warning C4800: 'boost::uint32_t' : forcing value to bool 'true' or 'false' (performance warning) Should it be using platform_cmpxchg32_strong at line 125 of interlocked.hpp? And return (0 != expected) (or something) on line 127 to clean up the warning? Best regards Luke Elliott.