Hello, attached is a patch which makes the format tests compile on tru64cxx65. It turns out that the compiler has troubles with the following code snippet: ---%<--- template <class X> class foo; namespace detail { template<class X> void bar (foo<X>& self); } template<class X> class foo { public: template<class Y> friend void detail::bar(foo<Y>&); }; --->%--- This gives the following error message: cxx: Error: /usr/users/schoepf/net/tmp/test_namelookup.cpp, line 13: declaration is incompatible with function template "void detail::bar(foo<X> &)" (declared at line 5) friend void detail::bar(foo<Y>&); ----------------------^ There are several possible workarounds I found, namely moving bar() out of the detail namespace, or making bar() a simple member of foo (not a member template), or just removing the friend declaration alltogether. I decided to use the latter workaround as it is already present in the format library for other compilers. Markus Index: format_class.hpp =================================================================== RCS file: /cvsroot/boost/boost/boost/format/format_class.hpp,v retrieving revision 1.21 diff -u -r1.21 format_class.hpp --- format_class.hpp 1 Feb 2004 14:57:09 -0000 1.21 +++ format_class.hpp 31 Aug 2004 09:11:02 -0000 @@ -83,7 +83,8 @@ #if !defined( BOOST_NO_MEMBER_TEMPLATE_FRIENDS ) \ && !BOOST_WORKAROUND(__BORLANDC__, <= 0x570) \ - && !BOOST_WORKAROUND( _CRAYC, != 0) + && !BOOST_WORKAROUND( _CRAYC, != 0) \ + && !BOOST_WORKAROUND(__DECCXX_VER, <= 60590041) // use friend templates and private members only if supported #ifndef BOOST_NO_TEMPLATE_STD_STREAM