[boost] [regex][msvc 8.0] Problematic workaround?

Please see http://tinyurl.com/39boxy , where MSVC 8.0 complains that there's no unchecked_equal function in namespace stdext: [...] c_regex_traits.cpp ..\boost/regex/v4/regex_workaround.hpp(154) : error C2039: 'unchecked_equal' : is not a member of 'stdext' [...] The probably crucial issue about this failing test is that it's being built in *release* mode, so I wonder whether the existence of unchecked_equal depends on some of the MSVC 8.0 "safe mode" settings. Thank you, Joaquín M López Muñoz Telefónica, Investigación y Desarrollo