[Boost-bugs] [Boost C++ Libraries] #6400: code will not compile if macro BOOST_LCAST_NO_WCHAR_T is defined

Subject: [Boost-bugs] [Boost C++ Libraries] #6400: code will not compile if macro BOOST_LCAST_NO_WCHAR_T is defined
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-01-14 15:25:20

#6400: code will not compile if macro BOOST_LCAST_NO_WCHAR_T is defined
-----------------------------------------------------+----------------------
 Reporter:  grzechu81@…                              |       Owner:  nasonov     
     Type:  Bugs                                     |      Status:  new         
Milestone:  To Be Determined                         |   Component:  lexical_cast
  Version:  Boost 1.48.0                             |    Severity:  Showstopper 
 Keywords:  gcc.3.4.4 cygwin BOOST_LCAST_NO_WCHAR_T  |  
-----------------------------------------------------+----------------------
 Using compiler gcc 3.4.4 (cygwin) and boost 1.48.0
 following code:

 {{{
 #include <boost/lexical_cast.hpp>
 int main(int argc, char * argv[])
 {
     return 0;
 }
 }}}

 will result in compiler error:

 {{{
 .../boost_1_48_0/boost/lexical_cast.hpp: In function `bool
 boost::detail::parse_inf_nan_impl(const CharT*, const CharT*, T&, const
 CharT*, const CharT*, const CharT*, const CharT*, CharT, CharT)':
 .../boost_1_48_0/boost/lexical_cast.hpp:651: error: incomplete type
 `boost::detail::lcast_char_constants<wchar_t>' used in nested name
 specifier
 .../boost_1_48_0/boost/lexical_cast.hpp:652: error: incomplete type
 `boost::detail::lcast_char_constants<wchar_t>' used in nested name
 specifier
 }}}


 It is because if using this compiler, macro BOOST_NO_STD_WSTRING is
 defined , so.. lexical cast defines BOOST_LCAST_NO_WCHAR_T.

 Some code is #ifdef'ed with this macro but not all that should. So there
 is discrepancy.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6400>
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