June 2014 - Boost - lists.preview.boost.org

Let's not forget the release
by John Maddock 09 Jun '14

09 Jun '14

The discussion on reducing dependencies is great, but folks, we do need to produce a release soon, or else it'll be back to bad old days of one release a year (if you're lucky). Just saying... John.

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[atomic]
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

Hi, there is a regression on Boost.Atomic on a lot of compilers. See regression test on Boost.Thread http://www.boost.org/development/tests/develop/developer/thread.html synchronized_value__default_ctor_p <https://github.com/boostorg/thread/blob/develop/test/sync/mutual_exclusion/…> Please, could Time or Ardrey take care of this issue? Best, Vicente Test output: jasonr-Ubuntu13.10-gcc - thread - synchronized_value__default_ctor_p / gcc-4.8.1 Rev cfaf6902e696a50a8f8c81510e676aaa547c7706 / Sun, 08 Jun 2014 00:02:00 +0000 Compile [2014-06-08 04:29:08 UTC]: fail "g++-4.8" -ftemplate-depth-128 -O0 -fno-inline -Wall -pedantic -g -pthread -fPIC -Wextra -Wno-long-long -Wno-variadic-macros -Wunused-function -pedantic -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_DEPRECATED -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_POSIX -DBOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED -DBOOST_THREAD_USE_DLL=1 -I".." -c -o "/hd/boosttest_new/results/boost/bin.v2/libs/thread/test/synchronized_value__default_ctor_p.test/gcc-4.8.1/debug/threading-multi/sync/mutual_exclusion/synchronized_value/default_ctor_pass.o" "../libs/thread/test/sync/mutual_exclusion/synchronized_value/default_ctor_pass.cpp" In file included from ../boost/atomic/detail/atomic_template.hpp:25:0, from ../boost/atomic/atomic.hpp:22, from ../boost/atomic.hpp:12, from ../boost/thread/testable_mutex.hpp:14, from ../libs/thread/test/sync/mutual_exclusion/synchronized_value/default_ctor_pass.cpp:15: ../boost/atomic/detail/union_cast.hpp: In instantiation of ???union boost::atomics::detail::union_cast(const From&) [with To = boost::thread::id; From = long unsigned int]::<anonymous>???: ../boost/atomic/detail/union_cast.hpp:36:5: required from ???To boost::atomics::detail::union_cast(const From&) [with To = boost::thread::id; From = long unsigned int]??? ../boost/atomic/detail/atomic_template.hpp:355:92: required from ???boost::atomics::detail::base_atomic<T, void>::value_type boost::atomics::detail::base_atomic<T, void>::load(boost::memory_order) const volatile [with T = boost::thread::id; boost::atomics::detail::base_atomic<T, void>::value_type = boost::thread::id]??? ../boost/atomic/detail/atomic_template.hpp:697:27: required from ???boost::atomics::atomic<T>::operator boost::atomics::atomic<T>::value_type() const volatile [with T = boost::thread::id; boost::atomics::atomic<T>::value_type = boost::thread::id]??? ../boost/thread/testable_mutex.hpp:113:30: required from ???bool boost::testable_mutex<Lockable>::is_locked() const [with Lockable = boost::mutex]??? ../libs/thread/test/sync/mutual_exclusion/synchronized_value/default_ctor_pass.cpp:24:7: required from here ../boost/atomic/detail/union_cast.hpp:34:12: error: member ???boost::thread::id boost::atomics::detail::union_cast(const From&) [with To = boost::thread::id; From = long unsigned int]::<anonymous union>::as_to??? with constructor not allowed in union To as_to; ^ ../boost/atomic/detail/union_cast.hpp:34:12: note: unrestricted unions only available with -std=c++11 or -std=gnu++11 ../boost/atomic/detail/union_cast.hpp: In instantiation of ???union boost::atomics::detail::union_cast(const From&) [with To = long unsigned int; From = boost::thread::id]::<anonymous>???: ../boost/atomic/detail/union_cast.hpp:36:5: required from ???To boost::atomics::detail::union_cast(const From&) [with To = long unsigned int; From = boost::thread::id]??? ../boost/atomic/detail/atomic_template.hpp:337:137: required from ???boost::atomics::detail::base_atomic<T, void>::base_atomic(const value_type&) [with T = boost::thread::id; boost::atomics::detail::base_atomic<T, void>::value_type = boost::thread::id]??? ../boost/atomic/detail/atomic_template.hpp:687:101: required from ???boost::atomics::atomic<T>::atomic(boost::atomics::atomic<T>::value_arg_type) [with T = boost::thread::id; boost::atomics::atomic<T>::value_arg_type = const boost::thread::id&]??? ../boost/thread/testable_mutex.hpp:47:40: required from ???boost::testable_mutex<Lockable>::testable_mutex() [with Lockable = boost::mutex]??? ../boost/thread/synchronized_value.hpp:431:14: required from ???boost::synchronized_value<T, Lockable>::synchronized_value() [with T = int; Lockable = boost::testable_mutex<boost::mutex>]??? ../libs/thread/test/sync/mutual_exclusion/synchronized_value/default_ctor_pass.cpp:23:76: required from here ../boost/atomic/detail/union_cast.hpp:35:14: error: member ???boost::thread::id boost::atomics::detail::union_cast(const From&) [with To = long unsigned int; From = boost::thread::id]::<anonymous union>::as_from??? with constructor not allowed in union From as_from; ^

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How to identify sub-libraries/modules of a library?
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

Hi, I would like to separate the following sub-libraries/modules chrono/stopwatches and thread/executors. Could someone point me where can I find the things to do to split a library in submodules? How to identify them? How to have separated regression test pages? What the new boostdev tool needs? ... Best, Vicente

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[modularization] Removing iterator->conversion dependency
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

Hi, in order to remove the dependency from iterator to conversion I suggest to move |boost/implicit_cast.hpp to MPL. | |Vicente | /conversion/ <http://www.pdimov.com/tmp/report-6d1f271/conversion.html> |<boost/implicit_cast.hpp>| * from |<boost/pending/iterator_tests.hpp>| |//boost/implicit_cast.hpp| |template <typename T> inline T implicit_cast (typename mpl::identity<T>::type x) { return x; } |

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[modularization] removing ConceptCheck ->Parameter dependency
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

I suggest removing the ConceptCheck -> Parameter dependency to move|boost/parameter/aux_/parenthesized_type.hpp| to Boost.Detail. Vicente /parameter/ <http://www.pdimov.com/tmp/report-6d1f271/parameter.html> |<boost/parameter/aux_/parenthesized_type.hpp>| * from |<boost/concept/requires.hpp>|

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Guidelines to implement Boost library evolution policy (was Boost 2.0)
by Beman Dawes 09 Jun '14

09 Jun '14

The Boost Steering Committee set the overall policy for Boost library evolution to C++11, C++14, and beyond at its May 2014 meeting in Aspen. Guidelines to implement that policy are now available at https://svn.boost.org/trac/boost/wiki/BoostEvo The plan is to integrate these guidelines with similar material on the web site in time for the 1.56 release. --The Boost Steering Committee

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[modularization] How to remove the Math -> multuplecission dependency?
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

Hi, John, ther is a cycle between multuprecision and Math. how can this dependency be removed? /math ->multiprecision/ <http://www.pdimov.com/tmp/report-6d1f271/multiprecision.html> |<boost/multiprecision/cpp_dec_float.hpp>| * from |<boost/math/constants/generate.hpp>| Vicente

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boost::system::error_code and std::error_code
by Vinícius dos Santos Oliveira 09 Jun '14

09 Jun '14

Is there any plans to add a conversion operator from boost::error_code to std::error_code or alike? I was designing a class that I'd like to be usable pleasantly with boost variant of error_code and C++11 variant of error_code, but my design was getting rather complicated (multiple inheritance, templates with no type deduction, ...) and I give up after I came to the make_error_code function, which would be called by the error_code constructor if is_error_code_enum was specialized (which was) and we cannot overload function based on return type (then would be difficult to make it work with boost::system::error_code and std::error_code). TL;DR: What the plans for migration from boost::system::error_code to std::error_code? -- Vinícius dos Santos Oliveira https://about.me/vinipsmaker

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[modularization] Moving <boost/math/common_factor_ct.hpp> to TypeTraits
by Vicente J. Botet Escriba 09 Jun '14

09 Jun '14

Hi, |moving boost/math/common_factor_ct.hpp to TypeTraits would remove the dependency from Interprocess, Pool and Variant to Math. | /interprocess/ <http://www.pdimov.com/tmp/report-6d1f271/interprocess.html> |<boost/math/common_factor_ct.hpp>| * from |<boost/interprocess/allocators/detail/node_pool.hpp>| /pool/ <http://www.pdimov.com/tmp/report-6d1f271/pool.html> |<boost/math/common_factor_ct.hpp>| * from |<boost/pool/pool.hpp>| /variant/ <http://www.pdimov.com/tmp/report-6d1f271/variant.html> |<boost/math/common_factor_ct.hpp>| || * from |<boost/variant/variant.hpp>| Vicente

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core/swap tests appear in core?
by Peter Dimov 08 Jun '14

08 Jun '14

Does anyone know why the core/swap tests, which are in a separate Jamfile, core/test/swap/Jamfile.v2, and have their own line in status/Jamfile.v2, core/test/swap # test-suite core/swap still appear in http://www.boost.org/development/tests/develop/developer/core.html instead of on their own page, core/swap? When they were in utility they did appear on utility/swap: http://www.boost.org/development/tests/develop/developer/utility-swap.html Or, to be more precise, does anyone know how we can make them appear on their own page. :-)

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