id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6441	lexical_cast uses non existing  std::basic_stringstream<char>::pptr when compiling with -DBOOST_NO_STD_LOCALE	leutloff@…	Antony Polukhin	"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.
"	Bugs	closed	Boost 1.50.0	lexical_cast	Boost 1.48.0	Regression	fixed		antoshkka@…