Jean-Marc Lasgouttes wrote: > Hmm, could one of you ask on the boost list? I am not subscribed to > it (lame excuse, I know). > > Ronald, could you tell us again what kind of error this cures? > > I agree that boost/regex/config.hpp would be a nice place for such > code.
Reading the source it seems to be used so: #define BOOST_REGEX_CHAR_T char #ifdef BOOST_REGEX_NARROW_INSTANTIATE # define BOOST_REGEX_INSTANTIATE #endif #include <boost/regex/v3/instances.hpp> #undef BOOST_REGEX_CHAR_T #ifdef BOOST_REGEX_INSTANTIATE # undef BOOST_REGEX_INSTANTIATE #endif #ifndef BOOST_NO_WREGEX #define BOOST_REGEX_CHAR_T wchar_t #ifdef BOOST_REGEX_WIDE_INSTANTIATE # define BOOST_REGEX_INSTANTIATE #endif #include <boost/regex/v3/instances.hpp> #undef BOOST_REGEX_CHAR_T #ifdef BOOST_REGEX_INSTANTIATE # undef BOOST_REGEX_INSTANTIATE #endif #endif Ie, use 'narrow' or 'wide' chars in the regex library but not both. The thing is: $ grep -r BOOST_REGEX_NARROW_INSTANTIATE . ./boost/boost/regex/v3/regex.hpp:#ifdef BOOST_REGEX_NARROW_INSTANTIATE ./boost/libs/regex/src/instances.cpp:#define BOOST_REGEX_NARROW_INSTANTIATE $ Why does nobody else need to set it explicitly? -- Angus
