July 2005 - Boost-users - lists.preview.boost.org

compiler warnings using date_time library on VS.NET 2003
by Sean Rohead 22 Jul '05

22 Jul '05

I am using VS.NET 2003 and have a simple program which merely includes the Boost date_time library. When compiling, I get 4 warning messages about unsafe conversions. Is there some compiler setting that I can change to get rid of this warning? Shouldn't I be able to include a Boost library without getting warnings? Thanks! >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // … [View More]main.cpp #include "boost/date_time/posix_time/posix_time.hpp" void main() { } >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> ------ Build started: Project: boost, Configuration: Debug Win32 ------ Compiling... main.cpp c:\lib\boost_1_32_0\boost\date_time\posix_time\conversion.hpp(27) : warning C4244: 'argument' : conversion from 'time_t' to 'long', possible loss of data c:\lib\boost_1_32_0\boost\date_time\time_system_counted.hpp(57) : warning C4244: 'initializing' : conversion from 'boost::date_time::counted_time_rep<config>::int_type' to 'boost::date_time::gregorian_calendar_base<ymd_type_,date_int_type_>::date_int_type', possible loss of data with [ config=boost::posix_time::millisec_posix_time_system_config ] and [ ymd_type_=boost::gregorian::greg_year_month_day, date_int_type_=boost::date_time::int_adapter<unsigned long>::int_type ] c:\lib\boost_1_32_0\boost\date_time\time_system_counted.hpp(52) : while compiling class-template member function 'boost::date_time::counted_time_rep<config>::date_type boost::date_time::counted_time_rep<config>::date(void) const' with [ config=boost::posix_time::millisec_posix_time_system_config ] c:\lib\boost_1_32_0\boost\date_time\time_system_counted.hpp(111) : see reference to class template instantiation 'boost::date_time::counted_time_rep<config>' being compiled with [ config=boost::posix_time::millisec_posix_time_system_config ] c:\lib\boost_1_32_0\boost\date_time\time.hpp(52) : see reference to class template instantiation 'boost::date_time::counted_time_system<time_rep>' being compiled with [ time_rep=boost::posix_time::int64_time_rep ] c:\lib\boost_1_32_0\boost\date_time\posix_time\ptime.hpp(32) : see reference to class template instantiation 'boost::date_time::base_time<T,time_system>' being compiled with [ T=boost::posix_time::ptime, time_system=boost::posix_time::posix_time_system ] c:\lib\boost_1_32_0\boost\date_time\time_parsing.hpp(81) : warning C4267: 'initializing' : conversion from 'size_t' to 'int', possible loss of data c:\lib\boost_1_32_0\boost\date_time\posix_time\time_parsers.hpp(27) : see reference to function template instantiation 'time_duration boost::date_time::parse_delimited_time_duration<boost::posix_time::time_duration>(const std::string &)' being compiled with [ time_duration=boost::posix_time::time_duration ] c:\lib\boost_1_32_0\boost\date_time\date_parsing.hpp(211) : warning C4244: 'argument' : conversion from 'std::allocator<_Ty>::value_type' to 'char', possible loss of data with [ _Ty=wchar_t ] c:\lib\boost_1_32_0\boost\date_time\date_parsing.hpp(253) : see reference to function template instantiation 'date_type boost::date_time::from_stream_type<date_type,std::basic_string<_Elem,_Traits,_Ax>::iterator>(iterator_type &,iterator_type &,wchar_t)' being compiled with [ date_type=boost::gregorian::date, _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t>, iterator_type=std::basic_string<wchar_t,std::char_traits<wchar_t>,std::allocator<wchar_t>>::iterator ] c:\lib\boost_1_32_0\boost\date_time\gregorian\parsers.hpp(78) : see reference to function template instantiation 'boost::date_time::period<point_rep,duration_rep> boost::date_time::from_simple_string_type<boost::gregorian::date,wchar_t>(const std::basic_string<_Elem,_Traits,_Ax> &)' being compiled with [ point_rep=boost::gregorian::date, duration_rep=boost::gregorian::date_duration, _Elem=wchar_t, _Traits=std::char_traits<wchar_t>, _Ax=std::allocator<wchar_t> ] [View Less]

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Re: [Boost-users] [bjam] How does one pass a compiler define
by Foster, Gareth 22 Jul '05

22 Jul '05

> Nobody -- other than that rhinoceros over there behind you -- > considers it adequate. > I hate to clutter the mailing list with redundant comments, but that really deserves a "lol". Lol. Gaz

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numeric::interval library an Alpha processor under OSF1
by Erwin 22 Jul '05

22 Jul '05

Hello, I would like to use the numeric::interval library on an Alpha EV 6.8 processor under the OSF1 operating system. My program runs fine under Linux on a Pentium 4, but on the Alpha machine, g++ tells me: boost/numeric/interval/hw_rounding.hpp:26:4: #error Boost.Numeric.Interval: Please specify rounding control mechanism. What has to be done? Where do I have to specifiy the rounding controls, how much do I need to know about processor internals etc? Which tests can and have to be done … [View More]

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Can't create time_duration with milliseconds on VS.NET 2003
by Sean Rohead 22 Jul '05

22 Jul '05

I am using VS.NET 2003 and attempting to create a time_duration using hours, minutes, seconds, and milliseconds. However, I get an error message regarding the 4th parameter (milliseconds). Here is my code and the error message: >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> // main.cpp #include "boost/date_time/posix_time/posix_time.hpp" using namespace boost::posix_time; void … [View More]

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Re: [Boost-users] Newbie Question - Errors if i want to, compile using g++
by mix 21 Jul '05

21 Jul '05

Hi, Thanks for your reply, it works great :D I must use "-lboost_regex" mix -- Michael Weibel mailto:mix@openflex.net http://www.openflex.net

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[serialization] Building in 1.32 for Borland problem
by Edward Diener 21 Jul '05

21 Jul '05

I downloaded the standalone Spirit 1.62 and put it in a directory of my machine. I set SPIRIT_ROOT to that directory in my environment. I then used bjam to build my Boost libraries for Borland and Bcb6. The serialization build reports errors from the spirit/core/config.hpp in my Boost 1.32 directory tree that my compiler is not supported. Of course I was expecting it to pick up Spirit files from my SPIRIT_ROOT directory tree. Why is this not working correctly ?

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regex with multi-byte characters
by Ovanes Markarian 21 Jul '05

21 Jul '05

Hello all, I am using wide characters from the Xerces-C library. These are defined as always being a 2 bytes characters by: typedef short XMLCh; // can be also defined through the #define preprocessor directive I don't remember it I also saw a post http://lists.boost.org/boost-users/2003/09/5095.php where John answered that it is better to convert these character sequences on-the-fly to char. Somehow I don't like this approach, since I believe that with wrong encoding set on the system some … [View More]

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Fw: State machine framework with dynamic configurability
by Andreas Huber 21 Jul '05

21 Jul '05

Forwarded from comp.lang.c++.moderated for being OT there. Original thread: http://tinyurl.com/cmvud -- Andreas Huber When replying by private email, please remove the words spam and trap from the address shown in the header. "Dave" <pplppp(a)gmail.com> wrote in message news:<1120669819.949833.153720(a)g14g2000cwa.googlegroups.com>... > the FAQ illustrates how to modify the existing layout of an FSM, but I > doubt whether it would be possible to implement the main FSM in … [View More]the > main exe and then dynamically load dlls to add inner/sub-states to > existing states; since the state transition/reactions have to be > specified as template parameters. > > >Out of curiosity: Would you care to describe what kind of application > >you need such a library for? > > This is probably off-topic for this ng but I'll provide my reasons so > you can decide if they're reasonable or not. > > The application I mentioned original post is a call control > application, in fact several of them. (Naturally each application is > maintained by a group of developers) Each of the applications has a > flat Fsm with many states. My goal is to design a framework that has a > main Fsm that is common to all the call control applications (with > points of customization pre-defined) and then dynamically load DLLs to > customize the behavior (by adding inner/sub-states) of the Fsm. The > obvious advantage of doing so would be code reuse. Another reason to > do > so is that if a customization for a specific customer is needed (say > add a few states to the fsm), only a few DLLs need to be > modified/added, whereas in the existing design the main application > has > to be modified and recompiled. In this way the customization may be > done by a developer who does not have full access to the source > code/statechart, all he/she needs to know is the interface of the > "point of customization". > > Dynamic configurabliity aside, the application I'm working on is a > call > control application, so I only need one instance of the state machine, > one instance of each state and use context objects to store state > information for each call. When I skimmed through the statechart > tutorial I see that the "Entry" and "Exit" functions are implemented > using the constructor and destructor of the simple_state class, so I > suppose that each state object is constructed when entered and > destructed when exited. I'm not sure.. if a state is entered and > exited > repeatedly, say in the stopwatch example, whether the object > construction/destruction incurs an unecessary cost. If I'm wrong, > please correct me. > > If there's a free Fsm libary (not licensed under GPL) that satisfies > my > requirements that would be great, but I would also consider commercial > products. Yet I'm under the impression that commerial Fsm libaries > usually come with graphical UML editors... right now I'm stuck with > Rational Rose 98 (old version), so the new tool would have to be able > to import UML diagrams drawn using Rational Rose 98. One good thing > about Rational Rose is that the saved files are pretty human readable > so I can just write a script to parse the state chart specifications > and generate code that uses some Fsm libarary (say boost statechart). > Of course another alternative would be rely on the UML editor to > generate frameowrk code for me but I would still have to make some > modifications to archive dynamic configurability. > > thanks > > Dave > - I'm a novice please be nice :-) > > > [ See http://www.gotw.ca/resources/clcm.htm for info about ] > [ comp.lang.c++.moderated. First time posters: Do this! ] [View Less]

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Newbie Question - Errors if i want to compile using g++
by mix＠openflex.net 21 Jul '05

21 Jul '05

Hi all, I'm a newbie in c++ and in boost too, but i want to learn ;) I've installed boost via apt and also with "hand-compile" but it doesn't run anyway.. here my code: -------------------- #include <iostream> #include <boost/regex.hpp> using namespace boost; using namespace std; int main() { const boost::regex e("PING\\s:\\S+"); cmatch match; if(boost::regex_match("PING :jgWEjg",match,e)) { cout << "PONG :" << match[1]; } return 0; } ----------------… [View More]---- then i want to compile it with ""g++ main.cc -o test" and these errors appeared: -------------------- /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEED1Ev+0xd): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::~basic_regex [in-charge]()': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::~reg_expression [not-in-charge]()' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost11basic_regexIcNS_12regex_traitsIcEESaIcEEC1EPKcjRKS3_+0x22): In function `boost::basic_regex<char, boost::regex_traits<char>, std::allocator<char> >::basic_regex[in-charge](char const*, unsigned, std::allocator<char> const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::reg_expression[not-in-charge](char const*, unsigned, std::allocator<char> const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEEC1ES3_S3_RNS_ 13match_resultsIS3_S6_EERKNS_14reg_expressionIcS8_S9_EENS_15regex_constants12_match_flagsE+0x53): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::perl_matcher[in-charge](char const*, char const*, boost::match_results<char const*, std::allocator<boost::sub_match<char const*> > >&, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEEC1ES3_S3_RNS_ 13match_resultsIS3_S6_EERKNS_14reg_expressionIcS8_S9_EENS_15regex_constants12_match_flagsE+0x85): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::perl_matcher[in-charge](char const*, char const*, boost::match_results<char const*, std::allocator<boost::sub_match<char const*> > >&, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&, boost::regex_constants::_match_flags)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::empty() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE24estimate_ma x_state_countEPSt26random_access_iterator_tag+0x2b): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::estimate_max_state_count(std::random_access_iterator_tag*)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::size() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE9match_impEv+ 0x8c): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::match_imp()': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::mark_count() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE9match_impEv+ 0x12c): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::match_imp()': : undefined reference to `boost::re_detail::verify_options(unsigned, boost::regex_constants::_match_flags)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail15save_state_initC1EPPNS0_11saved_stateES4_+0x13): In function `boost::re_detail::save_state_init::save_state_init[in-charge](boost::re_detail::saved_state**, boost::re_detail::saved_state**)': : undefined reference to `boost::re_detail::get_mem_block()' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail15save_state_initD1Ev+0x11): In function `boost::re_detail::save_state_init::~save_state_init [in-charge]()': : undefined reference to `boost::re_detail::put_mem_block(void*)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE5firstERKNS_14reg_expressionIcS3_S4_EE+0xd) : In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::first(boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE18unwind_extr a_blockEb+0x48): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::unwind_extra_block(bool)': : undefined reference to `boost::re_detail::put_mem_block(void*)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x15): In function `void boost::re_detail::raise_error<boost::regex_traits<char> >(boost::regex_traits<char> const&, unsigned)': : undefined reference to `boost::re_detail::c_traits_base::error_string(unsigned)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail11raise_errorINS_12regex_traitsIcEEEEvRKT_j+0x23): In function `void boost::re_detail::raise_error<boost::regex_traits<char> >(boost::regex_traits<char> const&, unsigned)': : undefined reference to `boost::re_detail::raise_regex_exception(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE9translateEcb+0x1f): In function `boost::c_regex_traits<char>::translate(char, bool)': : undefined reference to `boost::re_detail::c_traits_base::lower_case_map' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x3d): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::get_traits() const' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x244): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::c_regex_traits<char>::transform(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail16re_is_set_memberIPKccNS_12regex_traitsIcEESaIcEEET_S7_S7_PKNS0_11re_set_longERK NS_14reg_expressionIT0_T1_T2_EE+0x32e): In function `char const* boost::re_detail::re_is_set_member<char const*, char, boost::regex_traits<char>, std::allocator<char> >(char const*, char const*, boost::re_detail::re_set_long const*, boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> > const&)': : undefined reference to `boost::c_regex_traits<char>::transform_primary(std::basic_string<char, std::char_traits<char>, std::allocator<char> >&, std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost9re_detail8access_tIcNS_12regex_traitsIcEESaIcEE9can_startEcPKhh+0x30): In function `boost::re_detail::access_t<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char)': : undefined reference to `boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char> >::can_start(char, unsigned char const*, unsigned char, boost::re_detail::_narrow_type const&)' /tmp/ccb8hTb3.o(.gnu.linkonce.t._ZN5boost14c_regex_traitsIcE8is_classEcj+0x14): In function `boost::c_regex_traits<char>::is_class(char, unsigned)': : undefined reference to `boost::re_detail::c_traits_base::class_map' /tmp/ccb8hTb3.o(.gnu.linkonce.t. _ZN5boost9re_detail12perl_matcherIPKcSaINS_9sub_matchIS3_EEENS_12regex_traitsIcEESaIcEE12extend_stac kEv+0x16): In function `boost::re_detail::perl_matcher<char const*, std::allocator<boost::sub_match<char const*> >, boost::regex_traits<char>, std::allocator<char> >::extend_stack()': : undefined reference to `boost::re_detail::get_mem_block()' collect2: ld returned 1 exit status -------------------- so .. what i make wrong? *g* i know, bad question :) thx mix [View Less]

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Building Boost question
by Edward Diener 20 Jul '05

20 Jul '05

The documentation for building Boost states that one can use 'install', 'stage', or nothing on the bjam command line. But it does not explain the difference between these options other than: "none Only builds the Boost libraries. This lets you do the first part of what the install action normally does without copying the built libraries to the install location. install Builds and installs Boost libraries and headers. stage Builds the Boost libraries and copies them into a common … [View More]

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