Hello, I am trying to use use Boost::Regex on HP 11i with gcc 4.2.2 and I notice that in config/platform/hpux.hpp there is a define to turn off wide-char support unless using aCC and have a1 source eg: #if !(defined(__HP_aCC) || !defined(_INCLUDE__STDC_A1_SOURCE)) # define BOOST_NO_SWPRINTF # define BOOST_NO_CWCTYPE #endif This will never allow gcc to use wregex even if wchar support is available. Is this because there are so few people using Zgcc oin HP-ux or am I missing something? On the assumption that it is related to usage, I have added the following to allow gcc 4 to use wregex: #if defined(__GNUC__) # if (__GNUC__ >3) # undef BOOST_NO_CWCTYPE # endif #endif Is there anything obviously wrong with this? Thanks // Martin