[boost] [config] How to test for GCC <= 4.0

Hi, I have a workaround which I want to apply to all known versions of GCC but not to future versions unless I later determine that it is necessary. Currently I have something like this: #if !defined(BOOST_INTEL) && ( BOOST_WORKAROUND(__GNUC__, <= 3) || \ BOOST_WORKAROUND(__GNUC__, == 4) && \ BOOST_WORKAROUND(__GNUC_MINOR__, BOOST_TESTED_AT(0)) ) \ /**/ ... #endif but I can see from the regression reports that GCC 4.0 is not picking up the workaround code. What am I doing wrong? Jonathan .