Hello, attached patch has just been applied to "regex/v4/sub_match.hpp". This clears the compilation errors currently seen on Tru64 when compiling the regex_time example. Markus Index: sub_match.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/regex/v4/sub_match.hpp,v retrieving revision 1.14 diff -u -r1.14 sub_match.hpp --- sub_match.hpp 21 Jan 2005 17:22:39 -0000 1.14 +++ sub_match.hpp 19 Apr 2005 15:01:30 -0000 @@ -44,7 +44,8 @@ sub_match(BidiIterator i) : std::pair<BidiIterator, BidiIterator>(i, i), matched(false) {} #if !defined(BOOST_NO_TEMPLATED_ITERATOR_CONSTRUCTORS)\ && !BOOST_WORKAROUND(BOOST_MSVC, < 1310)\ - && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551) + && !BOOST_WORKAROUND(__BORLANDC__, <= 0x0551)\ + && !BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590042)) template <class T, class A> operator std::basic_string<value_type, T, A> ()const {