December 2012 - Boost - lists.preview.boost.org

[utf8_codecvt_facet]
by Robert Ramey 06 Jan '13

06 Jan '13

change Revision: 81616 Author: marshall Date: 11:12:42 AM, Wednesday, November 28, 2012 Message: Fixed incorrect 'const' param for utf8_codecvt_facet::do_length ---- Modified : /trunk/boost/detail/utf8_codecvt_facet.hpp This change causes the a failure in the serialization library test suite with "test_utf8_codecvt" on all platforms which use the gcc standard library. I'm not sure what motivated the change or what it addressed but I'm pretty sure it's causing this (and a couple other) test failures. Note that all the failures are related to usage of wchar_t - perhaps that helps. Note that the test is part of the serialization library test suite - but it has nothing to do with serialization per se and doesn't use any of the serialization library. It just happens to be there because there was no more convenient place to put it. Marshall - could you please look into this? Robert Ramey

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[Range] Proposal: a sub-maintainer of Boost.Range
by Michel Morin 05 Jan '13

05 Jan '13

Dear Neil, Dear Nate, First I'd like to say thank you for your library, Neil. It is a very useful library and it's great fun to writing codes with range adaptors. Boost.Range is one of the most important Boost libraries that are not yet added to the Standard. I know that Neil has made an effort to make time for developing the library, but recently making time for development seems difficult. And there are several open tickets of trivial bugs (e.g. #5603, #6110). Considering this situation, I'd like to make a proposal about Boost.Range: ** Adding a sub-maintainer to Boost.Range ** This reduces author's maintenance burden and also helps more stable development of the library. I recommend Nathan Ridge as a sub-maintainer of Boost.Range. His knowledge, experiences and contribution to Boost are great. If both of Neil and Nate accept the proposal, and if Nate needs some support for the start-up, I'll try my best to support him. I also believe that Jeff will also support him ;) Neil, what do you think about this proposal? I would appreciate and respect any of your reply. Yours sincerely, Michel

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[smart_ptr] error with nullptr_t
by Vicente J. Botet Escriba 05 Jan '13

05 Jan '13

Hi, next follows a compile error with clang 3.1 c++11 just including #include <boost/shared_ptr.hpp> iMac-de-Vicente-Botet-Escriba:test viboes$ time bjam toolset=clang-3.1x ts_ -q ...patience... ...found 1100 targets... ...updating 50 targets... clang-darwin.compile.c++ ../../../bin.v2/libs/thread/test/test_so.test/clang-darwin-3.1x/debug/threading-multi/test_so.o In file included from ../example/test_so.cpp:6: In file included from ../../../boost/shared_ptr.hpp:17: ../../../boost/smart_ptr/shared_ptr.hpp:344:22: error: non-friend class member 'nullptr_t' cannot have a qualified name shared_ptr( std::nullptr_t ) BOOST_NOEXCEPT : px( 0 ), pn() // never throws ~~~~~^ ../../../boost/smart_ptr/shared_ptr.hpp:344:33: error: expected ';' at end of declaration list shared_ptr( std::nullptr_t ) BOOST_NOEXCEPT : px( 0 ), pn() // never throws ^ ;

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[Release managers] Permission to rollback Boost.Thread breaking changes
by Vicente J. Botet Escriba 04 Jan '13

04 Jan '13

Hi, I would like to apply the following patch to trunk and release branch to avoid the Boost.Thread breaking changes. * [@http://svn.boost.org/trac/boost/ticket/6229 #6229] Rename the unique_future to future following the c++11. * [@http://svn.boost.org/trac/boost/ticket/6266 #6266] Breaking change: thread destructor should call terminate if joinable. * [@http://svn.boost.org/trac/boost/ticket/6269 #6269] Breaking change: thread move assignment should call terminate if joinable. This will let us the time to discuss the best way to manage with this breaking changes. Is someone against this late change? Best, Vicente svn diff boost/thread libs/thread Index: boost/thread/detail/config.hpp =================================================================== --- boost/thread/detail/config.hpp (revision 82295) +++ boost/thread/detail/config.hpp (working copy) @@ -78,9 +78,9 @@ #define BOOST_THREAD_RVALUE_REFERENCES_DONT_MATCH_FUNTION_PTR #endif -// Default version is 3 +// Default version #if !defined BOOST_THREAD_VERSION -#define BOOST_THREAD_VERSION 3 +#define BOOST_THREAD_VERSION 2 #else #if BOOST_THREAD_VERSION!=2 && BOOST_THREAD_VERSION!=3 && BOOST_THREAD_VERSION!=4 #error "BOOST_THREAD_VERSION must be 2, 3 or 4" Index: libs/thread/src/win32/thread.cpp =================================================================== --- libs/thread/src/win32/thread.cpp (revision 82295) +++ libs/thread/src/win32/thread.cpp (working copy) @@ -12,7 +12,7 @@ #ifndef WINVER #define WINVER 0x400 #endif -#define BOOST_THREAD_VERSION 3 +//#define BOOST_THREAD_VERSION 3 #include <boost/thread/thread.hpp> #include <boost/thread/once.hpp> Index: libs/thread/src/pthread/thread.cpp =================================================================== --- libs/thread/src/pthread/thread.cpp (revision 82295) +++ libs/thread/src/pthread/thread.cpp (working copy) @@ -6,7 +6,7 @@ // Distributed under the Boost Software License, Version 1.0. (See accompanying // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -#define BOOST_THREAD_VERSION 3 +//#define BOOST_THREAD_VERSION 3 #include <boost/thread/detail/config.hpp> #include <boost/thread/thread.hpp>

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Release managers: Boost.Thread breaking changes in 1.53
by Vicente J. Botet Escriba 04 Jan '13

04 Jan '13

Hi, there has been some threads about the following Boost.Thread breaking change in release 1.53. "Breaking changes when BOOST_THREAD_VERSION==3 (Default value since Boost 1.53): There are some new features which share the same interface but with different behavior. These breaking features are provided by default when BOOST_THREAD_VERSION is 3, but the user can however choose the version 2 behavior by defining the corresponding macro. As for the deprecated features, these broken features will be only available until boost 1.55. * [@http://svn.boost.org/trac/boost/ticket/6229 #6229] Rename the unique_future to future following the c++11. * [@http://svn.boost.org/trac/boost/ticket/6266 #6266] Breaking change: thread destructor should call terminate if joinable. * [@http://svn.boost.org/trac/boost/ticket/6269 #6269] Breaking change: thread move assignment should call terminate if joinable. " I would like to request advise from the release managers and of course the Boost community. Should I rollback the default to BOOST_THREAD_VERSION==3 for 1.53 and let the time to discuss the best way to manage with these breaking changes? Best, Vicente

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[log] Most recent version
by Alexander Arhipenko 04 Jan '13

04 Jan '13

Hi, We're going to update boost.log sources in our code base. Could you please recommend what version to use? The code is taken from: https://boost-log.svn.sourceforge.net/svnroot/boost-log/. And currently I consider 3 options: branches/v1 branches/bleeding-edge trunk Thanks in advance. Regards

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utf8_codecvt facet - volunteer opportuntiy
by Robert Ramey 03 Jan '13

03 Jan '13

Our implementation for a codecvt facet internal wide char to/from utf8 format requires some maintainence. We have our own implementation since 2001. Since then, the standard libary has come to specify some implementations and some libraries have implemented some or all of this aspect of the standard library. I've come to believe that we should: a) tweak our code to use the standard library implementations if they exist. b) tweak our code to use the names of the standard library implementation b) tweak our build so that our version replaces the the standard library implementation when and only when there is no standard implemenation available. This seemingly simple task is complicated by the following circumstances. a) The relationshp between UCS and Unicode is pretty confusing. b) The iterface for codecvt is confusing. c) a number of standard library implementations have non-conforming codecvt interface. d) a number of standard library implementations don't have any codecvt header at all. This is not a problem for our current implementation because we never import it. Anyone interested in working on this should contact Marshall, Beman or myself (in that precedance). Robert Ramey

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[config] Proposed BOOST_NOEXCEPT_NOTHROW macro
by Beman Dawes 03 Jan '13

03 Jan '13

The three current BOOST_NOEXCEPT* macro variants miss the case where C++03 code has a "throw()" throw-specifier. Classes that derive from standard library exceptions need this to avoid breaking code on C++03 compilers. I'm not enamored with the BOOST_NOEXCEPT_NOTHROW name, so feel free to offer suggestions for alternate names. Here is the full set of macros: #ifdef BOOST_NO_NOEXCEPT # define BOOST_NOEXCEPT # define BOOST_NOEXCEPT_NOTHROW throw() <---- new macro # define BOOST_NOEXCEPT_IF(Predicate) # define BOOST_NOEXCEPT_EXPR(Expression) false #else # define BOOST_NOEXCEPT noexcept # define BOOST_NOEXCEPT_NOTHROW noexcept <---- new macro # define BOOST_NOEXCEPT_IF(Predicate) noexcept((Predicate)) # define BOOST_NOEXCEPT_EXPR(Expression) noexcept((Expression)) #endif Unless there are objections, I'll commit the changes Wednesday afternoon Eastern US time. --Beman

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Flow-based programming library for Boost?
by Marcus Tomlinson 03 Jan '13

03 Jan '13

Is there any interest out there for a library that allows you to create fast, efficient flow-based programs with an easy-to-use object-oriented interface? (http://en.wikipedia.org/wiki/Flow-based_programming) I've created an open-source library that does this, called "DSPatch" ( http://sourceforge.net/projects/dspatch) and would like to contribute it to the Boost Libraries. Please let me know if this sounds like something you'd like to see in Boost. Thanks!

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[GitHelp]TryModBoost gives fatal: reference is not a tree.
by Larry Evans 01 Jan '13

01 Jan '13

Trying the instructions here: https://svn.boost.org/trac/boost/wiki/TryModBoost resulted in an error at the `git submodule updata --init step. How can this be corrected? TIA. Larry Details of steps taken follow: ~/prog_dev/boost-modular $ git clone http://github.com/boost-lib/boost modular-boost Initialized empty Git repository in /home/evansl/prog_dev/boost-modular/modular-boost/.git/ remote: Counting objects: 8096, done. remote: Compressing objects: 100% (2982/2982), done. remote: Total 8096 (delta 5190), reused 8001 (delta 5095) Receiving objects: 100% (8096/8096), 1.98 MiB | 387 KiB/s, done. Resolving deltas: 100% (5190/5190), done. ~/prog_dev/boost-modular $ ls modular-boost ~/prog_dev/boost-modular $ cd modular-boost/ ~/prog_dev/boost-modular/modular-boost $ ls INSTALL boost.css bootstrap.sh index.html status Jamroot boost.png doc libs tools LICENSE_1_0.txt boostcpp.jam forward_headers.cmake more boost-build.jam bootstrap.bat index.htm rst.css ~/prog_dev/boost-modular/modular-boost $ git submodule update --init Submodule 'libs/accumulators' (git://github.com/boost-lib/accumulators.git) registered for path 'libs/accumulators' Submodule 'libs/algorithm' (git://github.com/boost-lib/algorithm.git) registered for path 'libs/algorithm' Submodule 'libs/any' (git://github.com/boost-lib/any.git) registered for path 'libs/any' Submodule 'libs/array' (git://github.com/boost-lib/array.git) registered for path 'libs/array' Submodule 'libs/asio' (git://github.com/boost-lib/asio.git) registered for path 'libs/asio' Submodule 'libs/assign' (git://github.com/boost-lib/assign.git) registered for path 'libs/assign' Submodule 'libs/atomic' (git://github.com/boost-lib/atomic.git) registered for path 'libs/atomic' Submodule 'libs/bimap' (git://github.com/boost-lib/bimap.git) registered for path 'libs/bimap' Submodule 'libs/bind' (git://github.com/boost-lib/bind.git) registered for path 'libs/bind' Submodule 'libs/chrono' (git://github.com/boost-lib/chrono.git) registered for path 'libs/chrono' Submodule 'libs/circular_buffer' (git://github.com/boost-lib/circular_buffer.git) registered for path 'libs/circular_buffer' Submodule 'libs/compatibility' (git://github.com/boost-lib/compatibility.git) registered for path 'libs/compatibility' Submodule 'libs/concept_check' (git://github.com/boost-lib/concept_check.git) registered for path 'libs/concept_check' Submodule 'libs/config' (git://github.com/boost-lib/config.git) registered for path 'libs/config' Submodule 'libs/container' (git://github.com/boost-lib/container.git) registered for path 'libs/container' Submodule 'libs/context' (git://github.com/boost-lib/context.git) registered for path 'libs/context' Submodule 'libs/conversion' (git://github.com/boost-lib/conversion.git) registered for path 'libs/conversion' Submodule 'libs/core' (git://github.com/boost-lib/core.git) registered for path 'libs/core' Submodule 'libs/coroutine' (git://github.com/boost-lib/coroutine.git) registered for path 'libs/coroutine' Submodule 'libs/crc' (git://github.com/boost-lib/crc.git) registered for path 'libs/crc' Submodule 'libs/date_time' (git://github.com/boost-lib/date_time.git) registered for path 'libs/date_time' Submodule 'libs/disjoint_sets' (git://github.com/boost-lib/disjoint_sets.git) registered for path 'libs/disjoint_sets' Submodule 'libs/dynamic_bitset' (git://github.com/boost-lib/dynamic_bitset.git) registered for path 'libs/dynamic_bitset' Submodule 'libs/exception' (git://github.com/boost-lib/exception.git) registered for path 'libs/exception' Submodule 'libs/filesystem' (git://github.com/boost-lib/filesystem.git) registered for path 'libs/filesystem' Submodule 'libs/flyweight' (git://github.com/boost-lib/flyweight.git) registered for path 'libs/flyweight' Submodule 'libs/foreach' (git://github.com/boost-lib/foreach.git) registered for path 'libs/foreach' Submodule 'libs/format' (git://github.com/boost-lib/format.git) registered for path 'libs/format' Submodule 'libs/function' (git://github.com/boost-lib/function.git) registered for path 'libs/function' Submodule 'libs/function_types' (git://github.com/boost-lib/function_types.git) registered for path 'libs/function_types' Submodule 'libs/functional' (git://github.com/boost-lib/functional.git) registered for path 'libs/functional' Submodule 'libs/functional_hash' (git://github.com/boost-lib/functional_hash.git) registered for path 'libs/functional_hash' Submodule 'libs/fusion' (git://github.com/boost-lib/fusion.git) registered for path 'libs/fusion' Submodule 'libs/geometry' (git://github.com/boost-lib/geometry.git) registered for path 'libs/geometry' Submodule 'libs/gil' (git://github.com/boost-lib/gil.git) registered for path 'libs/gil' Submodule 'libs/graph' (git://github.com/boost-lib/graph.git) registered for path 'libs/graph' Submodule 'libs/graph_parallel' (git://github.com/boost-lib/graph_parallel.git) registered for path 'libs/graph_parallel' Submodule 'libs/heap' (git://github.com/boost-lib/heap.git) registered for path 'libs/heap' Submodule 'libs/icl' (git://github.com/boost-lib/icl.git) registered for path 'libs/icl' Submodule 'libs/integer' (git://github.com/boost-lib/integer.git) registered for path 'libs/integer' Submodule 'libs/interprocess' (git://github.com/boost-lib/interprocess.git) registered for path 'libs/interprocess' Submodule 'libs/intrusive' (git://github.com/boost-lib/intrusive.git) registered for path 'libs/intrusive' Submodule 'libs/io' (git://github.com/boost-lib/io.git) registered for path 'libs/io' Submodule 'libs/iostreams' (git://github.com/boost-lib/iostreams.git) registered for path 'libs/iostreams' Submodule 'libs/iterator' (git://github.com/boost-lib/iterator.git) registered for path 'libs/iterator' Submodule 'libs/lambda' (git://github.com/boost-lib/lambda.git) registered for path 'libs/lambda' Submodule 'libs/local_function' (git://github.com/boost-lib/local_function.git) registered for path 'libs/local_function' Submodule 'libs/locale' (git://github.com/boost-lib/locale.git) registered for path 'libs/locale' Submodule 'libs/lockfree' (git://github.com/boost-lib/lockfree.git) registered for path 'libs/lockfree' Submodule 'libs/logic' (git://github.com/boost-lib/logic.git) registered for path 'libs/logic' Submodule 'libs/math' (git://github.com/boost-lib/math.git) registered for path 'libs/math' Submodule 'libs/move' (git://github.com/boost-lib/move.git) registered for path 'libs/move' Submodule 'libs/mpi' (git://github.com/boost-lib/mpi.git) registered for path 'libs/mpi' Submodule 'libs/mpl' (git://github.com/boost-lib/mpl.git) registered for path 'libs/mpl' Submodule 'libs/msm' (git://github.com/boost-lib/msm.git) registered for path 'libs/msm' Submodule 'libs/multi_array' (git://github.com/boost-lib/multi_array.git) registered for path 'libs/multi_array' Submodule 'libs/multi_index' (git://github.com/boost-lib/multi_index.git) registered for path 'libs/multi_index' Submodule 'libs/multiprecision' (git://github.com/boost-lib/multiprecision.git) registered for path 'libs/multiprecision' Submodule 'libs/numeric/conversion' (git://github.com/boost-lib/numeric_conversion.git) registered for path 'libs/numeric/conversion' Submodule 'libs/numeric/interval' (git://github.com/boost-lib/interval.git) registered for path 'libs/numeric/interval' Submodule 'libs/numeric/odeint' (git://github.com/boost-lib/odeint.git) registered for path 'libs/numeric/odeint' Submodule 'libs/numeric/ublas' (git://github.com/boost-lib/ublas.git) registered for path 'libs/numeric/ublas' Submodule 'libs/optional' (git://github.com/boost-lib/optional.git) registered for path 'libs/optional' Submodule 'libs/parameter' (git://github.com/boost-lib/parameter.git) registered for path 'libs/parameter' Submodule 'libs/phoenix' (git://github.com/boost-lib/phoenix.git) registered for path 'libs/phoenix' Submodule 'libs/polygon' (git://github.com/boost-lib/polygon.git) registered for path 'libs/polygon' Submodule 'libs/pool' (git://github.com/boost-lib/pool.git) registered for path 'libs/pool' Submodule 'libs/preprocessor' (git://github.com/boost-lib/preprocessor.git) registered for path 'libs/preprocessor' Submodule 'libs/program_options' (git://github.com/boost-lib/program_options.git) registered for path 'libs/program_options' Submodule 'libs/property_map' (git://github.com/boost-lib/property_map.git) registered for path 'libs/property_map' Submodule 'libs/property_tree' (git://github.com/boost-lib/property_tree.git) registered for path 'libs/property_tree' Submodule 'libs/proto' (git://github.com/boost-lib/proto.git) registered for path 'libs/proto' Submodule 'libs/ptr_container' (git://github.com/boost-lib/ptr_container.git) registered for path 'libs/ptr_container' Submodule 'libs/python' (git://github.com/boost-lib/python.git) registered for path 'libs/python' Submodule 'libs/random' (git://github.com/boost-lib/random.git) registered for path 'libs/random' Submodule 'libs/range' (git://github.com/boost-lib/range.git) registered for path 'libs/range' Submodule 'libs/ratio' (git://github.com/boost-lib/ratio.git) registered for path 'libs/ratio' Submodule 'libs/rational' (git://github.com/boost-lib/rational.git) registered for path 'libs/rational' Submodule 'libs/regex' (git://github.com/boost-lib/regex.git) registered for path 'libs/regex' Submodule 'libs/scope_exit' (git://github.com/boost-lib/scope_exit.git) registered for path 'libs/scope_exit' Submodule 'libs/serialization' (git://github.com/boost-lib/serialization.git) registered for path 'libs/serialization' Submodule 'libs/signals' (git://github.com/boost-lib/signals.git) registered for path 'libs/signals' Submodule 'libs/signals2' (git://github.com/boost-lib/signals2.git) registered for path 'libs/signals2' Submodule 'libs/smart_ptr' (git://github.com/boost-lib/smart_ptr.git) registered for path 'libs/smart_ptr' Submodule 'libs/spirit' (git://github.com/boost-lib/spirit.git) registered for path 'libs/spirit' Submodule 'libs/spirit_classic' (git://github.com/boost-lib/spirit_classic.git) registered for path 'libs/spirit_classic' Submodule 'libs/statechart' (git://github.com/boost-lib/statechart.git) registered for path 'libs/statechart' Submodule 'libs/static_assert' (git://github.com/boost-lib/static_assert.git) registered for path 'libs/static_assert' Submodule 'libs/system' (git://github.com/boost-lib/system.git) registered for path 'libs/system' Submodule 'libs/test' (git://github.com/boost-lib/test.git) registered for path 'libs/test' Submodule 'libs/thread' (git://github.com/boost-lib/thread.git) registered for path 'libs/thread' Submodule 'libs/timer' (git://github.com/boost-lib/timer.git) registered for path 'libs/timer' Submodule 'libs/tokenizer' (git://github.com/boost-lib/tokenizer.git) registered for path 'libs/tokenizer' Submodule 'libs/tr1' (git://github.com/boost-lib/tr1.git) registered for path 'libs/tr1' Submodule 'libs/tti' (git://github.com/boost-lib/tti.git) registered for path 'libs/tti' Submodule 'libs/tuple' (git://github.com/boost-lib/tuple.git) registered for path 'libs/tuple' Submodule 'libs/type_traits' (git://github.com/boost-lib/type_traits.git) registered for path 'libs/type_traits' Submodule 'libs/typeof' (git://github.com/boost-lib/typeof.git) registered for path 'libs/typeof' Submodule 'libs/units' (git://github.com/boost-lib/units.git) registered for path 'libs/units' Submodule 'libs/unordered' (git://github.com/boost-lib/unordered.git) registered for path 'libs/unordered' Submodule 'libs/utility' (git://github.com/boost-lib/utility.git) registered for path 'libs/utility' Submodule 'libs/uuid' (git://github.com/boost-lib/uuid.git) registered for path 'libs/uuid' Submodule 'libs/variant' (git://github.com/boost-lib/variant.git) registered for path 'libs/variant' Submodule 'libs/wave' (git://github.com/boost-lib/wave.git) registered for path 'libs/wave' Submodule 'libs/xpressive' (git://github.com/boost-lib/xpressive.git) registered for path 'libs/xpressive' Submodule 'tools/auto_index' (git://github.com/boost-lib/auto_index.git) registered for path 'tools/auto_index' Submodule 'tools/bcp' (git://github.com/boost-lib/bcp.git) registered for path 'tools/bcp' Submodule 'tools/boostbook' (git://github.com/boost-lib/boostbook.git) registered for path 'tools/boostbook' Submodule 'tools/build' (git://github.com/boost-lib/build.git) registered for path 'tools/build' Submodule 'tools/inspect' (git://github.com/boost-lib/inspect.git) registered for path 'tools/inspect' Submodule 'tools/litre' (git://github.com/boost-lib/litre.git) registered for path 'tools/litre' Submodule 'tools/quickbook' (git://github.com/boost-lib/quickbook.git) registered for path 'tools/quickbook' Initialized empty Git repository in /home/evansl/prog_dev/boost-modular/modular-boost/libs/accumulators/.git/ remote: Counting objects: 475, done. remote: Compressing objects: 100% (201/201), done. remote: Total 475 (delta 319), reused 407 (delta 252) Receiving objects: 100% (475/475), 204.69 KiB | 335 KiB/s, done. Resolving deltas: 100% (319/319), done. Submodule path 'libs/accumulators': checked out '853400b2e1b4321696a90184d49cbb6610738806' Initialized empty Git repository in /home/evansl/prog_dev/boost-modular/modular-boost/libs/algorithm/.git/ remote: Counting objects: 681, done. remote: Compressing objects: 100% (370/370), done. remote: Total 681 (delta 392), reused 544 (delta 255) Receiving objects: 100% (681/681), 1.66 MiB | 383 KiB/s, done. Resolving deltas: 100% (392/392), done. fatal: reference is not a tree: a601c9ad632035076bb3c0feee75e915cfb54fca Unable to checkout 'a601c9ad632035076bb3c0feee75e915cfb54fca' in submodule path 'libs/algorithm'

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