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[chrono] i/o to locale or not to locale
by Vicente J. Botet Escriba 10 Dec '11

10 Dec '11

Hi all, currently Chrono provides a limited localization interface for duration and time_point I/O that is not satisfactory. The current implementation Boost.Chrono V1.2 (Boost 1.48) is based on the alternative A1 (see below) in which the hour,minute,second and the epoch can be localized. This could give the impression that chrono i/o is localized, but as Aryton as signaled it is not enough. I'm working on redesigning the chrono i/o in order to make a proposal with Howard Hinnant to the C++ committee. Two main alternatives A1- follow the formatting of recognized international body as ISO. A2- Add localization of specific units and epoch to the preceding format. It seems that the localized alternative seems to have less chances to be adopted, as no other library in the standard is providing these kind of facilities, and locale message facility is not completely satisfying. Things could change if we had a concrete proposal for improving the standard locale library (in which Aryton seems to be working IUC). More detail on the two alternatives: A1- Provide formatted i/o following the ISO 80000 http://en.wikipedia.org/wiki/ISO/IEC_80000, http://en.wikipedia.org/wiki/ISO_31-1, The format for duration could be <value> <unit> With unit been day, hour, minute, second, decisecond, centisecond, ..., decasecond, hectosecond, ... Note that the unit is always in singular form and in English. Next follows several valid inputs for duration 3 day 9 hour 1 second 0 second -1 second 3.77 millisecond 34 [1/30]second time_points could be formatted as <duration> <since epoch> where <since epoch> is a string that identifies the starting point of the epoch's clock, e.g. since boot, since process startup, .... The string associated to each clock are fixed and configurable specializing the trait clock_string Next follows several valid inputs for time_point. 123456 second since boot A1.a We can also consider ISO 8601. IMO, an acceptable format for durations could be a variation of the extended format independently of the date. <hours>:<minutes>:<seconds>[.fractional_seconds] Note that <hours> here is not limited to 24, and gives the total number of hours. A1.b An additional alternative could be to represent a duration as following a variant of the period representation: P[n]Y[n]M[n]DT[n]H[n]M[n]S in which the year and month are represented by days. E.g. P[n]DT[n]H[n]M[n]S[n]F P1234DT12H30M5S555F A2 - Make durations and time point i/o locale dependent. Based on the previous alternative, add the possibility to add specific locale facets that could format a duration following the pattern <value> <unit> <unit> <value> <hours><:><minutes><:><seconds>[<.>fractional_seconds] Here <value> and <unit> will be formatted following the specific locale and in this case the unit could have specific plural forms. For example in French the user could specialize the facets so that she could get 1 jour 3 jours 9 heures 1 seconde 0 secondes -1 seconde 3.77 milliseconds 34 [1/30] de seconde and in Spanish 1 segundo 0 segundo -1 segundo Add the possibility to add specific locale facets that could format a time_point following the pattern <duration> <epoch> <epoch> <duration> system_clock::time_point is a special case that should be formatted as a localized date, relative to the epoch 1900/01/01. A3 - Add on top of A2 some _byname facets. The fist alternative is in line with the money standard locale category that uses standard symbols, as $ or USD. It has the drawback that the <value> could be localized while the <unit> is not, e.g. 1,234 second Note the use of ','. The third alternative is IMO closer to the user expectations, but needs a better locale messages/by_name facet. The second alternative is a pragmatic one that left the possibility to build A3 when a satisfying messages/by_name facet is available. Boost.Chrono 2.0 in the trunk is a prototype of A2, that doesn't provides facets by locale name, only a default English implementation. That means that for the time been, the user needs to imbue a locale with her specific facet to get the expected localization (See french.cpp example in the SVN repository) What the Boost community think about this? Towards which alternative should Boost.Chrono move? Should Boost.Chrono wait until a concrete standard proposal is accepted? Thanks in advance, Vicente

2 6

Re: [boost] Boost.Thread and Boost.Move collision
by onlyone＠senet.com.au 10 Dec '11

10 Dec '11

>> >> 1) Move Boost.Move elements to boost::move:: namespace >> 2) Move Boost.Thread elements to boost::thread namespace >> 3) Modify Boost.Thread to make use of Boost.Move >> > >FWIW, I think 3) is what sounds obvious to me. Now maybe there's reasons to >avoid coupling those libraries together but I'm not sure what they would be. > >Philippe Hi, I have been working on a patch to do just that. I have not run into any major issues so far. Modifying Boost.Thread to use Boost.Move solves two problems: 1) It fixes the name collision (obviously). 2) It allows types that have been designed to use the Boost.Move emulation to interoperate with Boost.Thread. (This is relevant for futures/promises.) Evan Wallace

2 2

Phoenix Quoting
by paul Fultz 09 Dec '11

09 Dec '11

Hi, Is there a way using Phoenix to do quoting? I would like to do something like this: quote x("x"); string s = (x < 3 and x > 0)(); //s = "x < 3 and x > 0" Is there some kind of quote class in Phoenix or a way to create a quote class? Thanks, Paul

3 5

[boost-dev] compilation warnings questions by a newbee
by Rai, Neeraj 09 Dec '11

09 Dec '11

Hi, I am writing my first boost program and having trouble with the compiler warning against boost 1.44.0. Is there any way to get rid of those warnings so I can focus on real warnings in my code ? This seems to happen with newer version of g++ : tried 4.4.5 and 4.6 The gist of warning is : boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp:73:96: warning: the result of the conversion is unspecified because '-0x00000000000000001' is outside the range of type 'boost::numeric::udt_builtin_mixture_enum' [-Wconversion] Any help or pointers are appreciated. Neeraj ====== The following program is a cut down version of my code, just declares sregex #include <iostream> #include <boost/xpressive/xpressive.hpp> int main (int _argc, const char** _argv) { std::cout << "argc=" << _argc << " argv=" << _argv << std::endl; using namespace boost::xpressive; std::string keyword(""); sregex const re(sregex::compile(keyword, sregex::icase)); } ====== The following cmd is used to build it (tried g++ v 4.4.5 and 4.6 with same results) g++ -ftemplate-depth-128 -O0 -fno-inline -Wall -g -Wconversion -Wno-strict-aliasing -Wextra -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-array-bounds -Wno-ignored-qualifiers -Wno-parentheses -Wno-strict-aliasing -fPIC -DBOOST_ALL_NO_LIB -I/work/loc1/atddds -I/work/loc1/boost_1_44_0/include -Iinclude -c -o boost_regex_test.o boost_regex_test.cpp ====== The following cmd is used to build it (tried g++ v 4.4.5 and 4.6) g++ -ftemplate-depth-128 -O0 -fno-inline -Wall -g -Wconversion -Wno-strict-aliasing -Wextra -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-array-bounds -Wno-ignored-qualifiers -Wno-parentheses -Wno-strict-aliasing -fPIC -DBOOST_ALL_NO_LIB -I/work/loc1/atddds -I/work/loc1/boost_1_44_0/include -Iinclude -c -o boost_regex_test.o boost_regex_test.cpp In file included from /work/loc1/boost_1_44_0/include/boost/mpl/integral_c.hpp:32:0, from /work/loc1/boost_1_44_0/include/boost/type_traits/integral_constant.hpp:11, from /work/loc1/boost_1_44_0/include/boost/type_traits/detail/bool_trait_def.hpp:15, from /work/loc1/boost_1_44_0/include/boost/type_traits/is_volatile.hpp:40, from /work/loc1/boost_1_44_0/include/boost/type_traits/remove_const.hpp:14, from /work/loc1/boost_1_44_0/include/boost/proto/proto_fwd.hpp:25, from /work/loc1/boost_1_44_0/include/boost/xpressive/xpressive_fwd.hpp:53, from /work/loc1/boost_1_44_0/include/boost/xpressive/detail/detail_fwd.hpp:24, from /work/loc1/boost_1_44_0/include/boost/xpressive/regex_primitives.hpp:21, from /work/loc1/boost_1_44_0/include/boost/xpressive/xpressive_static.hpp:24, from /work/loc1/boost_1_44_0/include/boost/xpressive/xpressive.hpp:18, from boost_regex_test.cpp:2: /work/loc1/boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp: In instantiation of 'mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>': /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/meta.hpp:30:13: instantiated from 'boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u> >' /work/loc1/boost_1_44_0/include/boost/mpl/if.hpp:67:11: instantiated from 'boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u> >, boost::mpl::identity<boost::numeric::convdetail::get_subranged_BuiltIn2BuiltIn<unsigned char, int> >, boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)1u> >, boost::mpl::identity<boost::mpl::identity<boost::numeric::convdetail::subranged_BuiltIn2Udt<unsigned char, int> > >, boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)2u> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2BuiltIn<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2Udt<unsigned char, int> > > > >' /work/loc1/boost_1_44_0/include/boost/mpl/eval_if.hpp:37:41: instantiated from 'boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u> >, boost::mpl::identity<boost::numeric::convdetail::get_subranged_BuiltIn2BuiltIn<unsigned char, int> >, boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)1u> >, boost::mpl::identity<boost::mpl::identity<boost::numeric::convdetail::subranged_BuiltIn2Udt<unsigned char, int> > >, boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)2u> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2BuiltIn<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2Udt<unsigned char, int> > > > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/meta.hpp:82:9: instantiated from 'boost::numeric::convdetail::ct_switch4<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)1u>, mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)2u>, boost::numeric::convdetail::get_subranged_BuiltIn2BuiltIn<unsigned char, int>, boost::mpl::identity<boost::numeric::convdetail::subranged_BuiltIn2Udt<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2BuiltIn<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2Udt<unsigned char, int> > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/udt_builtin_mixture.hpp:45:9: instantiated from 'boost::numeric::convdetail::for_udt_builtin_mixture<mpl_::integral_c<boost::numeric::udt_builtin_mixture_enum, (boost::numeric::udt_builtin_mixture_enum)0u>, boost::numeric::convdetail::get_subranged_BuiltIn2BuiltIn<unsigned char, int>, boost::mpl::identity<boost::numeric::convdetail::subranged_BuiltIn2Udt<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2BuiltIn<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Udt2Udt<unsigned char, int> > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/is_subranged.hpp:206:11: [ skipping 9 instantiation contexts ] /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:281:13: instantiated from 'boost::xpressive::detail::sequence<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::parse_alternates(FwdIter&, FwdIter) [with FwdIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:212:75: instantiated from 'boost::xpressive::basic_regex<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile_(FwdIter, FwdIter, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type, std::forward_iterator_tag) [with FwdIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:120:60: instantiated from 'boost::xpressive::basic_regex<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile(InputIter, InputIter, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type) [with InputIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:129:71: instantiated from 'typename boost::disable_if<boost::is_pointer<InputRange>, boost::xpressive::basic_regex<BidiIter> >::type boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile(const InputRange&, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type) [with InputRange = std::basic_string<char>, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, typename boost::disable_if<boost::is_pointer<InputRange>, boost::xpressive::basic_regex<BidiIter> >::type = boost::xpressive::basic_regex<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/basic_regex.hpp:193:61: instantiated from 'static boost::xpressive::basic_regex<BidiIter> boost::xpressive::basic_regex<BidiIter>::compile(const InputRange&, boost::xpressive::basic_regex<BidiIter>::flag_type) [with InputRange = std::basic_string<char>, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::xpressive::basic_regex<BidiIter>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' boost_regex_test.cpp:9:57: instantiated from here /work/loc1/boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp:73:96: warning: the result of the conversion is unspecified because '-0x00000000000000001' is outside the range of type 'boost::numeric::udt_builtin_mixture_enum' [-Wconversion] /work/loc1/boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp: In instantiation of 'mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>': /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/meta.hpp:30:13: instantiated from 'boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u> >' /work/loc1/boost_1_44_0/include/boost/mpl/if.hpp:67:11: instantiated from 'boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u> >, boost::mpl::identity<boost::numeric::convdetail::get_subranged_Int2Int<unsigned char, int> >, boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)1u> >, boost::mpl::identity<boost::mpl::identity<boost::numeric::convdetail::subranged_Int2Float<unsigned char, int> > >, boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)2u> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Int<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Float<unsigned char, int> > > > >' /work/loc1/boost_1_44_0/include/boost/mpl/eval_if.hpp:37:41: instantiated from 'boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u> >, boost::mpl::identity<boost::numeric::convdetail::get_subranged_Int2Int<unsigned char, int> >, boost::mpl::eval_if<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)1u> >, boost::mpl::identity<boost::mpl::identity<boost::numeric::convdetail::subranged_Int2Float<unsigned char, int> > >, boost::mpl::if_<boost::numeric::convdetail::equal_to<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)2u> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Int<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Float<unsigned char, int> > > > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/meta.hpp:82:9: instantiated from 'boost::numeric::convdetail::ct_switch4<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)1u>, mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)2u>, boost::numeric::convdetail::get_subranged_Int2Int<unsigned char, int>, boost::mpl::identity<boost::numeric::convdetail::subranged_Int2Float<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Int<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Float<unsigned char, int> > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/int_float_mixture.hpp:63:9: instantiated from 'boost::numeric::convdetail::for_int_float_mixture<mpl_::integral_c<boost::numeric::int_float_mixture_enum, (boost::numeric::int_float_mixture_enum)0u>, boost::numeric::convdetail::get_subranged_Int2Int<unsigned char, int>, boost::mpl::identity<boost::numeric::convdetail::subranged_Int2Float<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Int<unsigned char, int> >, boost::mpl::identity<boost::numeric::convdetail::subranged_Float2Float<unsigned char, int> > >' /work/loc1/boost_1_44_0/include/boost/numeric/conversion/detail/is_subranged.hpp:184:35: [ skipping 10 instantiation contexts ] /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:281:13: instantiated from 'boost::xpressive::detail::sequence<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::parse_alternates(FwdIter&, FwdIter) [with FwdIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:212:75: instantiated from 'boost::xpressive::basic_regex<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile_(FwdIter, FwdIter, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type, std::forward_iterator_tag) [with FwdIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:120:60: instantiated from 'boost::xpressive::basic_regex<BidiIter> boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile(InputIter, InputIter, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type) [with InputIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/regex_compiler.hpp:129:71: instantiated from 'typename boost::disable_if<boost::is_pointer<InputRange>, boost::xpressive::basic_regex<BidiIter> >::type boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::compile(const InputRange&, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type) [with InputRange = std::basic_string<char>, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, RegexTraits = boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> >, CompilerTraits = boost::xpressive::compiler_traits<boost::xpressive::regex_traits<char, boost::xpressive::cpp_regex_traits<char> > >, typename boost::disable_if<boost::is_pointer<InputRange>, boost::xpressive::basic_regex<BidiIter> >::type = boost::xpressive::basic_regex<__gnu_cxx::__normal_iterator<const char*, std::basic_string<char> > >, boost::xpressive::regex_compiler<BidiIter, RegexTraits, CompilerTraits>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' /work/loc1/boost_1_44_0/include/boost/xpressive/basic_regex.hpp:193:61: instantiated from 'static boost::xpressive::basic_regex<BidiIter> boost::xpressive::basic_regex<BidiIter>::compile(const InputRange&, boost::xpressive::basic_regex<BidiIter>::flag_type) [with InputRange = std::basic_string<char>, BidiIter = __gnu_cxx::__normal_iterator<const char*, std::basic_string<char> >, boost::xpressive::basic_regex<BidiIter>::flag_type = boost::xpressive::regex_constants::syntax_option_type]' boost_regex_test.cpp:9:57: instantiated from here /work/loc1/boost_1_44_0/include/boost/mpl/aux_/integral_wrapper.hpp:73:96: warning: the result of the conversion is unspecified because '-0x00000000000000001' is outside the range of type 'boost::numeric::int_float_mixture_enum' [-Wconversion]

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[filesystem] boost::filesystem::copy
by Tim Blechmann 09 Dec '11

09 Dec '11

hi all, is there any reason, why boost::filesystem v3 does not provide the copy function? it seems to be implemented in namespace boost::filesystem3, but it is not pulled into namespace boost::filesystem. thanks, tim

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mail quotes color coding
by Maxim Yanchenko 09 Dec '11

09 Dec '11

Hi Boosters, If you're using one of web-based mailing list web-sites (like GMane or Google Groups), you may find this GreaseMonkey script useful: http://userscripts.org/scripts/show/92919 It adds coloring of different levels of quotation similar to lists.boost.org. Enjoy! Maxim

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[Regex] Calling convention for _MANAGED code still somewhat broken when mixing native and managed projects
by Martin B. 09 Dec '11

09 Dec '11

Hi there! Background ---------- The header boost/regex/config.hpp currently contains the following code: #if defined(BOOST_MSVC) && (BOOST_MSVC >= 1200) && defined(_MSC_EXTENSIONS) #if defined(_DEBUG) || defined(__MSVC_RUNTIME_CHECKS) || defined(_MANAGED) # define BOOST_REGEX_CALL __cdecl #else # define BOOST_REGEX_CALL __fastcall #endif # define BOOST_REGEX_CCALL __cdecl #endif the `|| defined(_MANAGED)` was added in 2006 (SVN history) to cater for the fact that __fastcall does not work on managed C++/CLI (/clr compiled) projects. See, e.g. this: http://lists.boost.org/boost-users/2004/12/9203.php Problem ------- This is really quite suboptimal, as with the solution as posted above, you need *a separate* lib/dll for managed-C++ and native-C++ Projects. Especially for the DLL, this is a non-solution, as I can only have one DLL for projects/modules that are used in the same application. _MANAGED is a define set by the VC compiler if the /clr switch is present, therefore it is actually never set when compiling the boost libraries. Of course you can set it via `define=_MANAGED` and you can then use these generated libraries from a C++/CLI project. (Which I have done: ... `define=_MANAGED` ... --with-regex ...) BUT: You can now *not* use these libraries from a non-managed ("native") C++ project as that, obviously, doesn't have _MANAGED set, and unlike with the boost build, I don't think it's feasible to define this wholesale for a native project. (And anyways, I'm rather hesitant to define this myself.) Obviously, I could just edit regex/config.hpp, but that is a maintenance nightmare of its own here. Solution -------- I *think* what really would be needed would be a define that the user could specify, something like this: #if defined(_DEBUG) || ... || defined(BOOST_REGEX_NO_FASTCALL) # define BOOST_REGEX_CALL __cdecl ... (I have attached a patch, hope this works.) Would this make sense? To add a short rationale: We use C++/CLI projects as bridges between managed and native modules of our application. In the C++ part, we use boost regexes, and sometimes it would make sense to reuse some native code in a C++/CLI bridge module. If this native code uses Boost.Regex, this doesn't work currently, as the native code file will also be compiled with /clr, and then we have a calling convention mismatch and can't use our boost-regex-dll. cheers, Martin

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[1.49.0] Schedule finalized
by Beman Dawes 08 Dec '11

08 Dec '11

The 1.49.0 schedule has been posted to the Boost C++ Libraries calendar. Milestones (all dates are Mondays): December 19: 1.49.0 (I.E. branches/release) Closed for new libraries. December 26: Quality checks begin January 9: Closed for major changes January 16: Closed for all changes January 23: Beta target date February 20: Release target date The longer period between the beta and release is intended to allow more time to respond to problem reports. --The Release Team

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[msm] deferral stack overfolw
by Richard Szabo 08 Dec '11

08 Dec '11

Hi Christophe just playing around with event deferral I have found a problem which leads to a stack overflow it ends in an infinite loop if I want to defer 2 events in the same state. see attached example it somehow similar to the problem we had earlier but that was fixed ... I have ran this test on MSM trunk version from yesterday. Cheers Richie

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[build] Little help required
by Antony Polukhin 08 Dec '11

08 Dec '11

Hi, I need to create Jamfile.v2 where one of the tests must be compiled on MSVC compilers with additional flag /Zc:wchar_t- How shall I change the following lines: test-suite conversion : # A lot of [ run ... ] lines [ run lexical_cast_typedefed_wchar_test.cpp ../../test/build//boost_unit_test_framework/<link>static ] # Requires /Zc:wchar_t- ; Best regards, Antony Polukhin

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