October 2015 - Boost - lists.preview.boost.org

A GUI Library
by jinhao 09 Nov '17

09 Nov '17

Hi, all I am developing a GUI library, it takes aim at easy-to-use and portable library for modern C++ methods. The project at http://stdex.sourceforge.net A git repository at http://nanapro.codeplex.com A brief at http://nanaproject.wordpress.com/2011/12/16/preliminary-study-of-nana-c-lib… Is there any interest in this library? Regards Jinhao

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Re: [boost] Boost CRC maintainer (Daryle Walker) missing in action?
by Olaf van der Spek 19 Jun '17

19 Jun '17

Hi Daryle, Any luck on your new setup? Gr, Olaf On Mon, Nov 28, 2011 at 1:11 AM, Daryle Walker <darylew(a)gmail.com> wrote: > I can look at it once I've finished my new setup. > > I had to reset my computer after a partial crash years ago. I never > got around to recreating my programming setup. My computer had been > at its maximum Operating System level back then, which is now 3 > versions behind. For the past few months, I've had my sister's old > laptop, with Windows Vista, and am trying to add a programming setup > to it now. > > > On Tue, Nov 22, 2011 at 7:18 AM, Beman Dawes <bdawes(a)acm.org> wrote: >> Hi Daryle, >> >> This guy has volunteered to take over maintenance of Boost CRC. Should >> we take him up on his offer? > >> ---------- Forwarded message ---------- >> From: >> Date: Wed, Nov 2, 2011 at 7:51 AM >> Subject: [boost] Boost CRC maintainer (Daryle Walker) missing in action? >> To: boost(a)lists.boost.org >> >> >> Hi, >> >> It looks like the Boost CRC maintainer (Daryle Walker) is missing in action? >> >> No response to tickets from the past 3 years. What's the procedure in this case? >> >> https://svn.boost.org/trac/boost/ticket/2492 >> https://svn.boost.org/trac/boost/query?component=crc&col=id&col=summary&col… > > -- > Daryle Walker > Mac, Internet, and Video Game Junkie > darylew AT gmail DOT com -- Olaf

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[container] moving a pre-built vector into a flat_set
by Sam Kellett 12 Mar '17

12 Mar '17

a common problem i encounter is that i have two stage's w/r/t to a large collection of data: building and querying. vector is obviously the king of building. flat_set is the king of querying. so what i often tend to do is build up a very large vector, sort it then create a flat_set using the flat_set(ordered_unique_t) constructor. however this still copies the entire vector into the flat_set, right? what i would like to be able to do is move the vector straight into the flat_set, something like: std::vector<T> data; flat_set data_set1(std::move(data)) // move vector in and sort it // or: std::sort(data.begin(), data.end()); // sort vector flat_set data_set2(ordered_unique_t, std::move(data)) // and move it in is this doable (am i just being blind?) or is there plans/interest for this?

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bad include guards
by Steven Watanabe 26 Jan '17

26 Jan '17

AMDG The following pairs of files have identical include guards ./boost/concept_check/general.hpp ./boost/concept/detail/msvc.hpp ./boost/concept_check/msvc.hpp ./boost/concept/detail/msvc.hpp ./boost/filesystem/cerrno.hpp ./boost/cerrno.hpp ./boost/interprocess/containers/tree.hpp ./boost/interprocess/containers/detail/tree.hpp ./boost/mpl/min_max.hpp ./boost/mpl/max.hpp ./boost/mpl/vector/aux_/front.hpp ./boost/mpl/list/aux_/front.hpp ./boost/multi_index/identity_fwd.hpp ./boost/multi_index/identity.hpp ./boost/python/pointee.hpp ./boost/python/detail/pointee.hpp ./boost/spirit/phoenix/closures.hpp ./boost/lambda/closures.hpp ./boost/xpressive/proto/v1_/proto_typeof.hpp ./boost/xpressive/proto/proto_typeof.hpp ./libs/config/test/boost_no_dep_nested_class.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/config/test/boost_no_mem_templates.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/config/test/boost_no_std_allocator.ipp ./libs/config/test/boost_has_vc6_mem_templ.ipp ./libs/conversion/test.hpp ./libs/any/test.hpp ./libs/interprocess/example/print_container.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/interprocess/test/expand_bwd_test_template.hpp ./libs/interprocess/test/allocation_test_template.hpp ./libs/interprocess/test/printcontainer.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/interprocess/test/print_container.hpp ./libs/interprocess/example/printcontainer.hpp ./libs/iostreams/test/detail/utf8_codecvt_facet.hpp ./boost/detail/utf8_codecvt_facet.hpp ./libs/regex/test/regress/test_regex_search.hpp ./libs/regex/test/regress/test_partial_match.hpp ./libs/serialization/test/C.hpp ./libs/serialization/test/A.hpp ./libs/xpressive/perf/regex_comparison.hpp ./libs/regex/performance/regex_comparison.hpp ./tools/inspect/time_string.hpp ./tools/common/time_string.hpp In Christ, Steven Watanabe

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[Fit] pipable order of the arguments
by Vicente J. Botet Escriba 05 Mar '16

05 Mar '16

Hi, I would like to know what other think about the order of the pipe (See this issue https://github.com/pfultz2/Fit/issues/5) What would be the expected meaning of auto r1 =1 | pipable(f)(2); f(1,2) or f(2,1)? What would be the expected meaning of auto f2 = partial(f)(2); auto r1 =1 | pipable(f2); f(1,2) or f(2,1)? As the operator| has left-to-right associativity, we can not do auto x = 1 | 2 | pipable(f); We would need a way to pack the parameters auto x = forward_as_tuple(1, 2) | pipable(f); but this wouldn't compile as f has two parameters. or use parenthesis auto x = 1 | (2 | pipable(f)); and the result will be f(2, 1). Any ideas? Best, Vicente Vicente

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[regression] Winapi submodule tests missing
by Andrey Semashev 13 Feb '16

13 Feb '16

Hi, The winapi submodule tests are missing from the test matrix, although the status/Jamfile.v2 lists it. This is both on develop and master. Is there something I should do to make the tests appear?

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Problems building Boost libraries for Windows Store when C++/CX is involved
by Mikael Olenfalk 04 Jan '16

04 Jan '16

Hi, I am working on porting the boost libraries we depend on to winrt, most porting is rather straightforward (basically switch from win32 apis which are 20 years old to apis which are 15 years old :D ). However I have hit a bit of a problem when compiling Boost.Log. Boost.Log depends on Boost.Asio which uses C++/CX to call some of the newer Store APIs (Windows::Networking and friends). When I build I get these errors: compile-c-c++ ..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj dump_ssse3.cpp ..\..\..\libs\log\src\dump_ssse3.cpp: fatal error C1107: could not find assembly 'platform.winmd': please specify the assembly search path using /AI or by setting the LIBPATH environment variable call "C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC\vcvarsall.bat" x86 store >nul cl /Zm800 /ZW /EHsc -nologo @"..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj.rsp" (As you can see I have monkey-patched msvc.jam to append the "store" argument to vcvarsall.bat - to no avail :( -- the monkey-patch is here if you want to look at it: https://github.com/mauve/build/commits/universal-windows-boost-1.59.0 ) The @response file looks like this: "..\..\..\libs\log\src\dump_ssse3.cpp" -Fo"..\..\..\bin.v2\libs\log\build\msvc-14.0\debug\log-api-winnt\threading-multi\windows-api-store\dump_ssse3.obj" -TP /Z7 /Od /Ob0 /W3 /GR /MDd /Zc:forScope /Zc:wchar_t /wd4675 /EHs /arch:SSE2 /bigobj /wd4003 /wd4456 /wd4459 /wd4503 -c -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1 -DBOOST_DATE_TIME_DYN_LINK=1 -DBOOST_FILESYSTEM_DYN_LINK=1 -DBOOST_LOG_BUILDING_THE_LIB=1 -DBOOST_LOG_DLL -DBOOST_SPIRIT_USE_PHOENIX_V3=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_DONT_USE_CHRONO=1 -DBOOST_THREAD_USE_DLL=1 -DDATE_TIME_INLINE -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_CRT_SECURE_NO_DEPRECATE -D_CRT_SECURE_NO_WARNINGS -D_SCL_SECURE_NO_DEPRECATE -D_SCL_SECURE_NO_WARNINGS -D_WIN32_WINNT=0x0603 "-I..\..\.." Regards, Mikael

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[multiprecision] uses boost::math::gcd without including the header
by Peter Dimov 04 Jan '16

04 Jan '16

include/boost/multiprecision/cpp_int/misc.hpp uses boost::math::gcd (and lcm), but does not include common_factor_rt.hpp.

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[smart_ptr] Moving cast for unique_ptr
by Karolin Varner 21 Dec '15

21 Dec '15

Hi all! There is the family of boost pointer cast (boost::static_pointer_cast, boost::dynamic_pointer_cast, ...) that allow a developer to write generic code by casting pointers regardless of whether they are some smart pointer (e.g. shared_ptr) or plain pointers. However, those functions have not been implemented for unique_ptr, because they create a copy of their pointer and unique_pointers can not be copied. In my case I still needed to cast some unique_ptr and since it's ok to move unique_ptrs I wrote a function that does exactly that. The code is below – Comments are very, very welcome. It works for my case, but I am sure it is not as generic and safe as it should be ;) . Specifically, for a library, it should be made to work on any kind of smart/plain pointer. Not just unique_ptr. Is there any interest to include a boost::static_moving_pointer_cast and the other types of casts in boost? Best, Karolin /// Dynamic cast a unique_ptr. /// /// This function shall move the pointer in in_ptr, into /// a new unique_pointer of the desire type, dynamic_casting /// it in the process. /// In given pointer shall contain a NULL pointer afterwards. /// /// If unsuccessful, function shall throw an error and leave /// in_ptr unmodified. /// /// This behaviour contrasts a bit with the behaviour of the /// normal dynamic_cast: /// 1. dynamic_cast copies objects, this moves them since /// unique_pointers can not be copied. /// 2. dynamic_cast returns a NULL pointer if the pointer to /// cast is of an incomplete type, this throws /// incomplete_cast instead, to ease error handling. /// /// @tparam T The type to convert to (as non-pointer) /// @tparam F The type to convert from (as non-pointer) /// @param in_ptr The unique_ptr to cast /// @return in_ptr, cast to the desired type template<typename T, typename F> std::unique_ptr<T> dynamic_moving_pointer_cast(std::unique_ptr<F> &in_ptr) { // Exception safety: If The dynamic cast throws an error, // or of we throw incomplete_cast, in_ptr will still be // unmodified T *plain_out_ptr = dynamic_cast<F*>(in_ptr.get()); if (plain_out_ptr == NULL && in_ptr.get() != NULL) throw incomplete_cast(); // Exception safety: Both operations are noexcept in_ptr.release(); return std::unique_ptr<T>(plain_out_ptr); }

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[variant] Opinion on boost::safe_get<> and default boost::get<> behavior
by Antony Polukhin 18 Dec '15

18 Dec '15

Hi all, I'm in doubt and would like to hear opinions on the following issue. boost::get for boost::variant was not making any compile time checks, resulting in runtime errors where a compile time error must be: boost::variant<int, string> v(100); boost::get<bool>(&v); // returns NULL instead of compile time error boost::get<bool>(v); // throws exception on runtime instead of compile time error Now we have an implementation of compile time checked get in a separate branch at git: boost::variant<int, string> v(100); boost::safe_get<bool>(&v); // compile time error boost::safe_get<bool>(v); // compile time error boost::unsafe_get<bool>(&v); // returns NULL instead of compile time error boost::unsafe_get<bool>(v); // throws exception on runtime instead of compile time error I'm in doubt, what the default behavior of boost::get must be: * safe_get behavior is much closer to Standard Library behavior (just like std::get for tuples) and allows to avoid errors in user code * unsafe_get behavior is same as behavior of old boost::get and won't break user's code if boost::get is used in some generic contexs What's your opinion? -- Best regards, Antony Polukhin

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[Range] sorted and randomized adaptors
by Mohammed El-Afifi 10 Nov '15

10 Nov '15

Hello everybody, I know this might have been raised a few times before in this mailing list, but I'd like to know if it's possible(or otherwise what would prevent) to have sorted and randomized adaptors so that I may have a sorted and randomized view of a range respectively. Something like vector<int> x; // operations to fill x x | boost::adaptors::sorted; x | boost::adaptors::randomized;// That one might also take an optional random generator as a parameter. I understand that in this case the adaptor isn't entirely lazy as the adapted(x here) must be completely consumed before producing a single element in the resulting range. I want to know however if having such adaptors may contradict any basic principles of the existing adaptors. P.S. Two other threads I found that discussed the same idea(for sorted only): - http://lists.boost.org/Archives/boost/2009/03/149247.php - http://lists.boost.org/Archives/boost/2006/05/105122.php

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[thread] boost::future::then
by Vladimir Prus 06 Nov '15

06 Nov '15

Hi, looking through docs for some other futures implementation [1], I see this: Why not use boost::future? # At the time of writing, 1.53 (the first version with the requisite features) was brand new, not well-tested, and not available to [...] developers. It is still a bit buggy/bleeding-edge They haven't fleshed out the threading model very well yet, e.g. every single then currently spawns a new thread unless you explicitly ask it to work on this thread only, and executor support was nonexistent (and now, is still experimental). Now, 1.53 is ancient. Can anybody comment on these statements regarding boost::future::thread state in 1.59? In particular, suppose I have this: // Thread 1 boost::promise<int> pi; boost::future<int> fi = pi.get_future(); // pass pi to thread 2 somehow fi.then(....); // Thread 2 pi.set_value(100); And I want continuation to be executed in thread 1, assuming that thread 1 runs Qt event loop, allowing me to use QTimer::singleShot, or queued signal, or similar mechanism. How would I go about making boost::future do it? Has anybody done so? Thanks, Volodya

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Interest in a Boost.Chrono/Date library
by Vicente J. Botet Escriba 03 Nov '15

03 Nov '15

Hi, maybe some of you have already see the Howard Hinnant presentation at CppCOn2015 [1] about his new data-v2 library [2]. My prototype of Boost.Chrono/Date library ([3] ] was based on the Howard original library, but when we want to reach the maximum of performances we need to use a specific date class for each usage. This is what Howard explains in his marvelous presentation ans his tiny date library My post here wants to know if there is interest in a library providing what H.H. date library provides in Boost. Note that his data-v2 library yet doesn't provides as much as Boost.Date provides but IMHO it is much elegant and efficient. If there is enough interest, I will request you to do a first review of the H.H. Date-V2 library. Then once we have a consensus I will make my POC Chrono/Date library ready for review. H.H. Date-V2 is under MIT license, which IIRC is compatible with the Boost license. I don't know yet if would need to add this license, as my POC [3] is already a good starting point, nevertheless, I would like to know if there could be any issues about having the source under both licenses. Best, Vicente [1] https://www.youtube.com/watch?v=tzyGjOm8AKo [2] https://github.com/HowardHinnant/date [3] https://github.com/viboes/chrono_date/commits/master First commit Nov/2011 Last-Mars2014

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Math tools polynomial enhancements
by Jeremy Murphy 02 Nov '15

02 Nov '15

I was just looking at the polynomial class and thinking that it could be enhanced substantially with more operators. Presumably with division and remainder it would be a Euclidean ring and then you could even call gcd on it. I have a draft implementation ready but I wanted to check that there is interest from the maintainers. Cheers. Jeremy

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[GitHub] [PR] setting default branch to 'develop'
by Michel Morin 01 Nov '15

01 Nov '15

Hi, We sometimes forget to change the base branch of PR from 'master' to 'develop', even if we know PR should be made against 'develop' branch! To prevent from accidentally making PR against master branch, it'd be nice to **set the default branch to 'develop' branch** for Boost repositories on GitHub. (Then, the default base branch of PR would be set to 'develop' branch.) To change the default branch, it takes just a few clicks on web browser: https://help.github.com/articles/setting-the-default-branch/ Thoughts? Regards, Michel P.S. Some libraries have already done this, but most of Boost libraries don't do this yet.

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[Config] BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE not defined in MACOS for GCC-5
by Vicente J. Botet Escriba 29 Oct '15

29 Oct '15

Hi John, I'm having an issue with gcc-5.1 on MacOs. BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE is not defined. I see that there are things like #if __MACH__ && !defined(_MSL_USING_MSL_C) ... # if (__GNUC__ == 4) // Both gcc and intel require these. # define BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE # define BOOST_HAS_NANOSLEEP # endif #else ... // BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE not defined here #endif Wondering why the GCC version must be 4 and why when _MSL_USING_MSL_C is defined these PTHREAD attributes are not defined neither. BTW, when I compile with version 4 everything works correctly. Vicente

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[website] update version for Oracle Solaris Studio on the Boost website
by Aparna Kumta 29 Oct '15

29 Oct '15

The Boost1.59 page at http://www.boost.org/users/history/version_1_59_0.html under 'Compilers Tested' section, contains an entry for Sun( Oracle Solaris Studio). This needs modification for the upcoming Boost 1.60 release for which I would like to submit a PR. I looked at https://github.com/boostorg/website but not sure if this is the correct repository. Could someone please point me as to where I need to submit the PR? Thanks, Aparna

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[graph] dijkstra pull request ping
by Piotr Wygocki 28 Oct '15

28 Oct '15

Dear all, this mail concerns this pull request: https://github.com/boostorg/graph/pull/13 which is currently over one year long. Maybe, the idea of the patch is unclear or needs some additional discussion. The patch solves the problem which arises when using no_init version on dijkstra algorithm and passing a custom distance_map. This algorithm is implemented as call to BFS, which is very unfortunate since it is not BFS. Maybe BFS could be seen as special case of dijkstra with custom priority queue but not the other way around. The current implementation introduces some inefficiencies, which are described in the pull request's comment. I've created very short and direct patch which makes the implementation straight forward. Additionally, the unit test is added to check mentioned efficiency gain. Are there any additional questions concerning this pull request? Could it be possibly be merged to master? Maybe, we can use a favour of the community maintenance team. Regards, Piotr Wygocki

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Boost.Log 1.59.0 incompatible with MSVC option /Zc:wchar_t-
by Giel van Schijndel 28 Oct '15

28 Oct '15

Hi, I'm trying to build Boost.Log on MSVC9 (aka Visual Studio 2008) with the [/Zc:wchar_t-][1] option (necessary due to a vendor's SDK we're using). Unfortunately this fails to build. The mentioned option turns wchar_t into a typedef to unsigned short (i.e. it's not longer a distinct type). TLDR: My question _why_ is boost::log::aux::is_character_type<wchar_t> excluded when BOOST_NO_INTRINSIC_WCHAR_T is #defined? I see no harm in including it unconditionally. For some reason however, the template meta-function boost::log::aux::is_character_type<T>'s specialisation for wchar_t is guarded by !defined(BOOST_NO_INTRINSIC_WCHAR_T) [2]. This means wchar_t is _not_ regarded as a character type and prevents instantiation of the boost::log::aux::code_convert functions [3] which are _still_ used. The only reason I can see for excluding this is to prevent a _potential_ conflict with multiple specialisations for the same type (because of the typedef nature of wchar_t). But the only other specialisation that could potentially give a conflict is the one for char16_t, and that's mandated by C++11 to be a distinct type (AFAIK the only reason why wchar_t isn't always distinct type on Windows/MSVC is because they introduced the type pre-standardisation, so I see no reason why that mistake should be repeated for char16_t). For reference, the mentioned option's usage is detected in boost by this option preventing #definition of _NATIVE_WCHAR_T_DEFINED to indicate it did this. In boost/config/compiler/visualc.hpp there's the following code: > #ifndef _NATIVE_WCHAR_T_DEFINED > # define BOOST_NO_INTRINSIC_WCHAR_T > #endif [1]: https://msdn.microsoft.com/en-us/library/ms933181.aspx [2]: https://github.com/boostorg/log/blob/boost-1.59.0/include/boost/log/detail/… [3]: https://github.com/boostorg/log/blob/boost-1.59.0/include/boost/log/detail/… -- Met vriendelijke groet, With kind regards, Giel van Schijndel

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boost lockfree queue.hpp - alternate implementation w/o compare_exchange
by boost＠mccart.us 28 Oct '15

28 Oct '15

Is there any interest in an alternate implementation of a lockfree queue that doesn't use compare_exchange (assuming it is correct, or can be made to be correct)? I have a multi-producer / multi-consumer implementation that generally doesn't suffer nearly as much from contention. On my hardware (an older high-end 64 bit x86 workstation) I get roughly comparable throughput with existing boost lockfree queue with 1 producer and 1 consumer. With 4 producers and 4 consumers I get about 3x throughput gain on existing boost lockfree queue. However, this implementation has a weakness, it suffers in over subscription scenarios (threads in middle of push/pop that lose their time-slice); with twice as many threads as cores its performances is comparable to boost lockfree queue (using try_push/try_pop, otherwise throughput is down the toilet), and with 4x thread/core ratio the throughput is somewhat less than boost lockfree queue. This was tested on Windows 7 x64 with Inel Xeon X5355 x 2 (2 sockets w/ 4 cores a piece) @ 2.66 Ghz and 32 GB RAM @ 667 MHz. The implementation can be found here: https://github.com/benmccart/GuarunteedMpmcQueue/blob/master/queue/queue.hpp Is the implementation correct? Can anyone spot any race conditions, or conditions under which the implementation would fail to work as expected (other than queue is full/empty or over-subscription)? ~Ben

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[serialization]cannot build libboost_serialization.so.1.60.0 with Oracle Solaris Studio
by Aparna Kumta 28 Oct '15

28 Oct '15

I see the following error when compiling Boost 1.60 in develop branch with Oracle Solaris Studio development compiler with -library=stlport4. "CC" -compat=5 -library=stlport4 -temp=/tmp/bn -xO4 -mt -erroff=%none -m32 -DBOOST_ALL_NO_LIB=1 -DNDEBUG -I".." -c -o "/export/home/sstrunk-tester/boost_regression/boost_regression_develop/boost_sparc-S2_stlport4/results/boost/bin.v2/libs/serialization/build/sun-next_stlport4/release/link-static/threading-multi/basic_text_iprimitive.o" "../libs/serialization/src/basic_text_iprimitive.cpp" "../boost/archive/basic_streambuf_locale_saver.hpp", line 75: Error: sync is not a member of std::ios . "../boost/archive/impl/basic_text_iprimitive.ipp", line 112: Where: While instantiating "boost::archive::basic_ios_locale_saver<char, std::char_traits<char>>::~basic_ios_locale_saver()". "../boost/archive/impl/basic_text_iprimitive.ipp", line 112: Where: Instantiated from boost::archive::basic_text_iprimitive<std::istream>::basic_text_iprimitive(std::istream &, bool). "../libs/serialization/src/basic_text_iprimitive.cpp", line 25: Where: Instantiated from non-template code. 1 Error(s) detected. This seems to prevent building libboost_serialization.so.1.60.0, and a recent regression after changes to the serialization library. Thanks, Aparna

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[type_traits][multi_index][msvc-7.1] problems with is_const in VC 7.1
by Joaquin M López Muñoz 27 Oct '15

27 Oct '15

> Hi, Boost.MultiIndex is failing at master for VC 7.1: http://tinyurl.com/oxflkj6 .\boost\multi_index\identity.hpp(75) : error C2535: 'Type &boost::multi_index::detail::const_identity_base<Type>::operator() (const boost::reference_wrapper<Type> &) const' : member function already defined or declared the problem seemingly being with boost::is_const. The offending code looks like template<typename Type> struct const_identity_base { // produces the error above if Type is not const }; template<typename Type> struct non_const_identity_base { ... }; template<class Type> struct identity: mpl::if_c< is_const<Type>::value, detail::const_identity_base<Type>, detail::non_const_identity_base<Type> >::type { }; Boost.TypeTraits recently changed its is_const implementation to the very simple template <class T> struct is_const : public false_type {}; template <class T> struct is_const<T const> : public true_type{}; template <class T, size_t N> struct is_const<T const[N]> : public true_type{}; template <class T> struct is_const<T const[]> : public true_type{}; which relies on template partial specialization (supposedly supported by VC 7.1). Yet, seems like const_identity_base is wrongly selected for a non-const Type. Any clues about what might be going on? Thank you, Joaquín M López Muñoz Telefónica

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[tools] updating sun.jam
by Aparna Kumta 27 Oct '15

27 Oct '15

I am not familiar with the syntax to update sun.jam file. In tools/build/src/tools/sun.jam, lines 153-156 contain 153: actions link.dll bind LIBRARIES 154: { 155: "$(CONFIG_COMMAND)" $(OPTIONS) -L"$(LINKPATH)" -R"$(RPATH)" -o "$(<)" -h$(<[1]:D=) -G "$(>)" "$(LIBRARIES)" -Bdynamic -l$(FINDLIBS-SA) -Bstatic -l$(FINDLIBS-ST) -B$(LINK-RUNTIME) 156: } Only if compiling with -std=c+11 or -std=c++14, I need to replace '-G' above with '-G -library=stdcpp,CrunG3' Any help on modifying this is appreciated. Thanks, Aparna

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1.60 closes for major changes next Wednesday
by Vladimir Prus 27 Oct '15

27 Oct '15

1.60 is now closed for new libraries and breaking changes - please don't merge such changes for master. We'll be closed for major changes next Wednesday, Oct 28, at the end of the day. Thanks, -- Vladimir Prus http://vladimirprus.com

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[vmd] Added to new release
by Edward Diener 26 Oct '15

26 Oct '15

I would like to make sure the VMD library is added to the upcoming Boost 1.60 release. Is there anything further I have to do to affect that ?

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