Hello, I would like to commit attached patch to stl_concept_check.cpp and mark the corresponding failure as expected. OK? Markus Index: stl_concept_check.cpp =================================================================== --- stl_concept_check.cpp (revision 41950) +++ stl_concept_check.cpp (working copy) @@ -47,7 +47,8 @@ function_requires< BackInsertionSequence<Vector> >(); #if !(defined(__GNUC__) && defined(BOOST_HIDE_EXPECTED_ERRORS)) -#if !(defined(__sgi) && defined(BOOST_HIDE_EXPECTED_ERRORS)) +#if !((defined(__sgi) || (defined(__DECCXX) && defined(_RWSTD_VER) && _RWSTD_VER <= 0x0203)) \ + && defined(BOOST_HIDE_EXPECTED_ERRORS)) // old deque iterator missing n + iter operation function_requires< Mutable_RandomAccessContainer<Deque> >(); #endif