[boost] Re: Standard/classic iostreams mess

From: Gennadiy Rozental (gennadiy.rozental_at_[hidden])
Date: 2004-09-22 12:30:17

Does anybody but me bother?

Gennadiy.

"Rozental, Gennadiy" <gennadiy.rozental_at_[hidden]> wrote in message
news:35C251B635189944B65CAB923470EA9601FEC6D6_at_execmail.apps.ilx.com...
> > > I added #include <ios>, which is apparently missing.
> > >
> > > Is there flag that separate standard/classic iostream (If I guess
> > > correctly - it should be enough)
> >
> > #ifndef BOOST_NO_STD_LOCALE
> > #include <ios>
> > #endif
> >
> > John.
> > (I also need to make the same fix!).
>
> It's quite obscure variable name for something very simple : switch
> classic/standard io.
>
> If you search through boost source you will see:
>
> 1. Check like "#if defined(__GNUC__) &&  (__GNUC__ < 3)" in
> boost/shared_ptr.hpp, boost/intrusive_ptr.hpp, boost/math/octonion.hpp
> boost/math/quaternion.hpp
>
> (which is incorrect BTW IMO since gcc2.95 could be using STLPort)
>
> 2. #ifndef  BOOST_NO_TEMPLATE_STD_STREAM in boost/format/free_funcs.hpp
and
> others
>    Look also in boost/format/detail/workarounds_gcc-2.95.hpp that contains
> detailed workaround for gcc2.95 without STLPort
>
> 3. #if __GNUC__ < 3 in graph/detail/edge.hpp (the same comment applies as
in
> 1.)
>
> 4. #ifdef BOOST_NO_TEMPLATED_STREAMS in boost/lambda/detail/operators.hpp
> and others, and Boost.Tuple headers
>
> 5. #ifdef BOOST_UBLAS_USE_BASIC_STREAM and #ifdef BOOST_UBLAS_USE_STREAM
in
> ublas code
>
> 6. #ifndef BOOST_NO_STD_LOCALE in boost.random/detail/... several headers,
> Boost.Regex,
>
> 7. #if BOOST_WORKAROUND(__GNUC__, < 3) && !defined(__SGI_STL_PORT) &&
> !defined(_STLPORT_VERSION)
> In Boost.Test headers
>
> 8. Boost.Variant present workarounds based on #if
> !defined(BOOST_NO_STD_LOCALE) in boost/detail/templated_streams.hpp
>
> 9. #ifdef BOOST_OLD_IOSTREAMS in boost/dynamic_bitset/dynamic_bitset.hpp
>
> 10. #  if !defined(BOOST_IOFM_NO_BASIC_STREAM) in output formatters
library
> currently under review.
>
> Also you could see that std::basic_ostream is used outside #ifndef
> BOOST_NO_STD_LOCALE and many other places where standard iostreams are
used
> without any checks.
>
> I believe we need to put stop to this mess and force everybody use the
same
> practice/variable(s).
>
> My vote is for BOOST_CLASSIC_IOSTREAMS, BOOST_STANDARD_IOSTREAMS.
>
> Regards,
>
> Gennadiy.
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