[Boost-bugs] [Boost C++ Libraries] #4700: Code bloat and slowing down compilation

Subject: [Boost-bugs] [Boost C++ Libraries] #4700: Code bloat and slowing down compilation
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-09-30 21:35:42

#4700: Code bloat and slowing down compilation
------------------------------------------------+---------------------------
 Reporter:  Ilya Murav'jov <muravev@…>          |       Owner:  samuel_krempp
     Type:  Feature Requests                    |      Status:  new          
Milestone:  To Be Determined                    |   Component:  format       
  Version:  Boost 1.44.0                        |    Severity:  Optimization 
 Keywords:                                      |  
------------------------------------------------+---------------------------
 1. Function basic_format::operator%(const T& x) generate distinct bits for
 every type. It is too redundant to instantiate them for every "const char
 [N]"! For example, one for "a", one for "ab", one for "abc" and so on.
 Here is a patch:

 {{{
         template<int N_>
         basic_format&   operator%(char const (&x)[N_])
             { return io::detail::feed<CharT, Tr, Alloc, char const *
 const&>(*this,(char const * const&)x); }

 }}}

 2. I use Boost.Format for i18n (heavily); just #include <boost/format.hpp>
 and one (!) using of boost::format() gets over 400kb in object code and
 ~0.4 sec slowness (for gcc). So I want to include only
 <boost/format/format_class.hpp> (declaration only) and instantiate types
 in a distinct source.
 But <boost/format/format_class.hpp> is not self all-sufficient. I have to
 include something like this:

 {{{
 #include <boost/config.hpp>

 #ifndef BOOST_NO_STD_LOCALE
 #include <locale>
 #endif

 #include <boost/format/format_class.hpp>
 }}}
 Fix it please.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4700>
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