[Boost-bugs] [Boost C++ Libraries] #6441: lexical_cast uses non existing std::basic_stringstream<char>::pptr when compiling with -DBOOST_NO_STD_LOCALE

Subject: [Boost-bugs] [Boost C++ Libraries] #6441: lexical_cast uses non existing std::basic_stringstream<char>::pptr when compiling with -DBOOST_NO_STD_LOCALE
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-01-23 21:21:06

#6441: lexical_cast uses non existing  std::basic_stringstream<char>::pptr when
compiling with -DBOOST_NO_STD_LOCALE
----------------------------------------+-----------------------------------
 Reporter:  leutloff@…                  |       Owner:  nasonov     
     Type:  Bugs                        |      Status:  new         
Milestone:  To Be Determined            |   Component:  lexical_cast
  Version:  Boost 1.48.0                |    Severity:  Regression  
 Keywords:                              |  
----------------------------------------+-----------------------------------
 BOOST_NO_STD_LOCALE is handled in this context:

 {{{
 #if defined(BOOST_NO_STRINGSTREAM)
             typedef stl_buf_unlocker<std::strstream, CharT >
 local_stringbuffer_t;
 #elif defined(BOOST_NO_STD_LOCALE)
             typedef stl_buf_unlocker<std::stringstream, CharT >
 local_stringbuffer_t;
 #else
             typedef stl_buf_unlocker<std::basic_stringbuf<CharT, Traits>,
 CharT > local_stringbuffer_t;
 #endif
 }}}

 '''but''' the stl_buf_unlocker class is using missing methods (pptr,
 pbase, setg, setp):

 {{{
     namespace detail // stl_buf_unlocker
     {
         template< class BufferType, class CharT >
         class stl_buf_unlocker: public BufferType{
         public:
             typedef BufferType base_class;
 #ifndef BOOST_NO_USING_TEMPLATE
             using base_class::pptr;
             using base_class::pbase;
             using base_class::setg;
             using base_class::setp;
 #else
             CharT* pptr() const { return base_class::pptr(); }
             CharT* pbase() const { return base_class::pbase(); }
             void setg(CharT* gbeg, CharT* gnext, CharT* gend){ return
 base_class::setg(gbeg, gnext, gend); }
             void setp(CharT* pbeg, CharT* pend) { return setp(pbeg, pend);
 }
 #endif
         };
     }
 }}}

 These are the errors from the compiler:

 {{{
 ./boost/lexical_cast.hpp:1129:31: error: no members matching
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka std::basic_stringstream<char>}::pptr’ in
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka struct std::basic_stringstream<char>}’
 ./boost/lexical_cast.hpp:1130:31: error: no members matching
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka std::basic_stringstream<char>}::pbase’ in
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka struct std::basic_stringstream<char>}’
 ./boost/lexical_cast.hpp:1131:31: error: no members matching
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka std::basic_stringstream<char>}::setg’ in
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka struct std::basic_stringstream<char>}’
 ./boost/lexical_cast.hpp:1132:31: error: no members matching
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka std::basic_stringstream<char>}::setp’ in
 ‘boost::detail::stl_buf_unlocker<std::basic_stringstream<char>,
 char>::base_class {aka struct std::basic_stringstream<char>}’
 }}}

 Compiling Boost.Test results in some more errors around this problem. I
 will attach the complete build log when building Boost.Test to show the
 compiler flags, too.

 The error is present in 1.48 and trunk. The log is from the trunk build.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6441>
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