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Revision 1.25 / (download) - annotate - [select for diffs], Fri Dec 29 09:16:26 2023 UTC (2 months ago) by adam
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boost: updated to 1.84.0

Revision 1.24 / (download) - annotate - [select for diffs], Thu Aug 24 08:01:04 2023 UTC (6 months, 1 week ago) by adam
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CVS Tags: pkgsrc-2023Q4-base, pkgsrc-2023Q4, pkgsrc-2023Q3-base, pkgsrc-2023Q3
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py-boost: update version in

Revision 1.23 / (download) - annotate - [select for diffs], Sun Apr 23 14:04:36 2023 UTC (10 months, 1 week ago) by adam
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CVS Tags: pkgsrc-2023Q2-base, pkgsrc-2023Q2
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py-boost: adjust

Revision 1.22 / (download) - annotate - [select for diffs], Sun Jan 22 16:24:29 2023 UTC (13 months, 1 week ago) by ryoon
Branch: MAIN
CVS Tags: pkgsrc-2023Q1-base, pkgsrc-2023Q1
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Diff to previous 1.21 (colored)

boost: Update to 1.81.0

Version 1.81.0

New Libraries

  * URL: A library for parsing, modifying, and printing URLs using only C++11,
    from Vinnie Falco and Alan de Freitas. Features include fast compilation,
    strong invariants, and strict compliance using a memory-friendly approach.

Updated Libraries

  * Asio:
      + Added the consign completion token adapter, which can be used to attach
        additional values to a completion handler.
      + Added any_completion_handler<>, which can be used to type-erase
        completion handlers.
      + Added experimental::co_composed to enable lightweight implementations
        of user-defined asynchronous operations using C++20 coroutines.
      + Add range-based experimental::make_parallel_group() overloads.
      + Added any_completion_executor, a type-erased wrapper for executors that
        are associated with completion handlers.
      + Added missing context query to use_future's executor.
      + Added nothrow constructor overloads to execution::any_executor<> and
      + Optimised representation of empty execution::any_executor objects to
        improve the performance of copy and move operations.
      + Added an associated_cancellation_slot specialisation for std::
      + Changed I/O objects to return their executors by const reference.
      + Changed associated to use deduced return types for all two-argument get
      + Fixed spawn implementation to catch unhandled exceptions and rethrow
        them outside of the spawned "thread".
      + Fixed spawn to ensure the completion handler is dispatched through the
        correct executor.
      + Fixed cleanup of of terminal-state spawn "thread" objects.
      + Fixed spawn and co_spawn implementations to dispatch cancellation
        handlers on the correct executor.
      + Changed semantics of 'dispatch' to mean the executor is used as-is.
      + Deprecated the execution::execute customisation point and sender/
        receiver facilities.
      + Added a C++11 parallel_group example.
      + Fixed example code to not use the deprecated resolve conversions.
      + Fixed an ambiguity in experimental::channel_traits specialisations.
      + Added a specialised channel implementation for the for R(error_code)
      + Made cancelled() public on the async_compose 'self' object.
      + Added io_executor_type and get_io_executor to the async_compose 'self'
      + Fixed implementation of release() for Windows overlapped handles.
      + Enabled deferred awaiting for experimental::coro, regularised
        experimental::use_coro, and fixed allocator handling.
      + Cleaned up experimental::promise and made it an asynchronous operation
      + Constrained post/defer overloads on ability to require blocking.never.
      + Changed descriptor implementation to fall back to fcntl if ioctl fails
        with ENOTTY when setting non-blocking mode.
      + Fixed Xcode deprecation warnings related to use of sprintf.
      + Fixed the arguments passed to select_reactor::run when it is run on an
        internal thread.
      + Fixed compilation errors when BOOST_ASIO_DISABLE_SMALL_BLOCK_RECYCLING
        is defined.
      + Updated detection of C++20 coroutine support on clang 14 and later.
      + Changed standard library feature detection to always enable std::
        invoke_result when targeting C++17 or later.
      + Fixed detection of return type deduction with MSVC.
      + Updated the asynchronous operation requirements to relax the
        requirements on the associated executor.
      + Added io_uring to the implementation notes.
      + Consult the Revision History for further details.
  * Beast:
      + Add buffers_generator
      + Add beast::http::message_generator
      + Added buffer_ref, so beast buffers can be used with asio.
      + Support for per-operation cancellation
      + C++20 awaitable examples.
      + websocket per-message compression options
      + websocket timeout option api
      + multiple content length error
      + Support for default-completion and rebind
  * Container Hash:
      + Major update.
      + The specializations of boost::hash have been removed; it now always
        calls hash_value.
      + Support for BOOST_HASH_NO_EXTENSIONS has been removed. The extensions
        are always enabled.
      + All standard containers are now supported. This includes std::
        forward_list and the unordered associative containers.
      + User-defined containers (types that have begin() and end() member
        functions that return iterators) are now supported out of the box.
      + Described structs and classes (those annotated with
        BOOST_DESCRIBE_STRUCT or BOOST_DESCRIBE_CLASS) are now supported out of
        the box.
      + hash_combine has been improved.
      + The performance (and quality, as a result of the above change) of
        string hashing has been improved. boost::hash for strings now passes
        SMHasher in 64 bit mode.
      + The documentation has been substantially revised to reflect the
  * Core:
      + empty_value members are now marked as constexpr.
      + Added fclose_deleter, a deleter that calls std::fclose on a pointer to
      + Bit manipulation utilities in boost/core/bit.hpp now explicitly require
        unsigned integers on input. (#129)
      + bit_width now returns int instead of a value of the input argument
        type. This follows resolution of LWG3656.
  * Describe:
      + To allow the inclusion of enumerators.hpp, bases.hpp, and members.hpp
        when the option -pedantic is used, the invocation of
        BOOST_DESCRIBE_ENUM has been moved from modifiers.hpp into a separate
        header, modifier_description.hpp. As a consequence, modifiers.hpp no
        longer includes enum.hpp. Code that has been relying on this implicit
        inclusion may fail, and will need to be fixed to include enum.hpp.
  * DLL:
      + Fixed path_from_handle implementation for Windows platforms, thanks to
        @SaltfishAmi for the bug report 57.
  * Filesystem:
      + Deprecated: path construction, assignment and appending from containers
        of characters, such as std::vector<char> or std::list<wchar_t>, is
        deprecated in v3 and removed in v4. Please use string types or
        iterators instead.
      + Deprecated: boost/filesystem/path_traits.hpp header is deprecated and
        will be removed in a future release. The header contained
        implementation details of path and should not be used in user's code.
      + Previously deprecated APIs will now generate compilation warnings on
        use. To suppress these warnings, BOOST_FILESYSTEM_ALLOW_DEPRECATED
        macro can be defined when compiling user's code.
      + Fixed compilation due to a missing include on POSIX systems that do not
        support *at APIs. (#250)
      + On Windows prior to 10, added a workaround for network share filesystem
        that produces ERROR_INVALID_PARAMETER when constructing directory
        iterators. (PR#246, #245)
      + On Windows, fixed weakly_canonical failing with an
        ERROR_INVALID_FUNCTION error code if the path started with the "\\?\"
        prefix. (#247)
      + Added support for std::string_view, boost::string_view and boost::
        container::string (as well as respective wchar_t counterparts) in path
        constructors, assignment and appending operations. (#208)
      + path constructors, assignment and appending operations taking a pair of
        iterators will no longer accept iterators with value types that are not
        one of the supported path character types.
      + On Windows, improved compatibility of directory_iterator with various
        mounted filesystems and Wine releases prior to 7.21. (#255, #266)
      + On Windows, deduplicated files are now reported as regular files rather
        than reparse files. (#262)
  * Fusion:
      + Added fusion::identity_view (PR#240)
      + Added support for associative sequences on fusion::transform_view (PR#
      + Fixed compilation for the case when fusion::reverse_view used with an
        associative sequence (PR#237)
      + Fixed Clang 13 -Wdeprecated-copy warnings (PR#261)
      + A small dependency reorganization. Now boost::ref and boost::
        noncopyable are used from Boost.Core (PR#249)
      + Added CI testing on Linux and MacOS for clang and gcc, fixed CI testing
        on Windows (PR#245, PR#236)
      + Improved docs and fixed typos (#234, PR#235, PR#238)
  * Geometry:
      + Solved issues
          o #1048 Index: Fix dangling references when Indexable is returned by
            value by IndexableGetter
          o #1076 Union: in rare cases it might miss one polygon
          o #1081 Union: due to precision it might miss interior rings
      + Bugfixes
          o #1063 Intersection: fix a bug in intersection of simple spherical
          o #1064 Formulas: fix a consistency issue in geodesic direct formulas
          o #1088 Point: Fix regression for custom point types
          o Various fixes for missing include files, warnings, C++20
            compilation errors and documentation
  * Histogram:
      + Major update.
      + Added new accumulators::fraction to compute fractions, their variance,
        and confidence intervals
      + Added interval computers for fractions: utility::clopper_pearson,
        utility::wilson_interval, utility::jeffreys_interval, utility::
        wald_interval which can compute intervals with arbitrary confidence
      + Added utility::confidence_level and utility::deviation types to pass
        confidence levels as probabilities or in multiples of standard
        deviation for all interval computers, respectively
      + Fixed internal sub_array and span in C++20
  * Iterator:
      + function_output_iterator now supports perfect forwarding of the
        assigned values to the wrapped function object. (PR#73)
      + Fixed compilation of constructing a function_input_iterator from result
        of post-incrementing another function_input_iterator. (#75)
      + The result of post-incrementing an iterator based on iterator_facade
        now supports operator->. (it++)->foo is equivalent to (*it++).foo,
        which was supported before.
  * JSON:
      + Added object::stable_erase.
      + Added parse overload for std::istream and operator>> for value.
      + Added rvalue ref-qualified accessors for value.
      + Conversion traits were redesigned.
      + Added conversion support for described classes and enums, std::optional
        , std::variant, and null-like types (including std::nullptr_t, std::
        nullopt_t, and std::monotype).
      + Added non-throwing conversion from value to user types.
  * LexicalCast:
      + Fixed compilation while casting volatile arithmetic types. Thanks to
        Giovanni Cerretani for the bug report #50.
      + Removed usage of deprecated headers. Thanks to Michael Ford for the PR
  * Locale:
      + Major update with some breaking changes.
      + C++11 support is now required, support for C++03 and earlier is dropped
      + Some enums have been converted to enum classes - Avoids name clashes
      + Replace -sICU_LINK_LOCALE & -sICU_LINK by fine-grained configuration
        options as done in Boost.RegEx
      + Fix detection of libiconv allowing Boost.Locale to be build (again) on
        some platforms
      + Remove use of and support for std::auto_ptr
      + Make the codecvt using wchar_t on Windows assume/use UTF-16 enconding
      + Performance improvements: Make basic_format, date_time & hold_ptr
        movable, Fix use of format cache
      + Make Boost.Locale compatible with more ICU versions (especially the
      + Fix RTTI definitions for some classes (visibility issues)
      + Fix compatibility of the ICU backend with some libc++ versions
      + Fix return value of some operators to correctly return non-const *this
      + Fix int-overflow on negative roll of years in date_time
      + Handle or suppress many warnings which makes the build log cleaner
      + Add support for more Windows codepages
      + Fix support for Windows codepages like ISO-2022-JP
  * Nowide:
      + Fix build failure of tests on MSVC
  * Stacktrace:
      + The library does not use COM initialization any more. Thanks to Alex
        Guteniev for the bug report, clarifications and PR PR#123!
      + The library now may use BOOST_STACKTRACE_BACKTRACE_INCLUDE_FILE macro
        value while detecting the libbacktrace availability in b2, thanks to
        Ben Gemmill for the bug report #115.
      + Added BOOST_STACKTRACE_BACKTRACE_FORCE_STATIC macro to force a single
        backtrace_state static instance while using the libbacktrace. Thanks to
        the Rasmus Thomsen for the bug report #118!
      + Avoid unresolved references when including only the boost/stacktrace/
        stacktrace.hpp header. Thanks to the Long Deng for the bug report #116.
      + Optimized stacktrace printing by not calling strlen on Windows
        platforms. Thanks to Alex Guteniev for the bug report #122
  * PFR:
      + Improved detection of aggregate initializables in C++14 mode, thanks to
        Denis Mikhailov for the PR PR#97.
      + Suppress clang-tidy warnings, thanks to Alexander Malkov for the PRs PR
        #109, PR#104.
      + Use fold expressions if they are supported by the compiler. Thanks to
        Jean-Micha?l Celerier for the PR PR#96.
  * STLInterfaces:
      + Fix two ill-formed iterator_interface operators in pre-C++20 iterators
        with a const value_type.
  * System:
      + The macro BOOST_SYSTEM_DISABLE_THREADS can now be defined to disable
        the use of <mutex> (e.g. on single-threaded libstdc++).
      + Added value_type, error_type, in_place_value, in_place_error to result
      + Added emplace to result<>.
  * Unordered:
      + Major update.
      + Added fast containers boost::unordered_flat_map and boost::
        unordered_flat_set based on open addressing.
      + Added CTAD deduction guides for all containers.
      + Added missing constructors as specified in LWG issue 2713.
  * Variant:
      + Avoid recursive inclusion of headers, thanks to Nathan Sidwell for the
        bug report #101.
      + Removed usage of deprecated headers, thanks to Michael Ford for the PR
      + Fixed compilation on clang in C++23 mode, thanks to Ed Catmur for the
        PR PR#98.
  * Variant2:
      + Added support for boost::json::value_from and boost::json::value_to.

Version 1.80.0

Known Issues

These are patches from library authors which were found too late to be fixed in
the release.

  * Config
      + Support for libcpp15 which removes std::unary_function and std::
        binary_function. Patch.
  * Filesystem
      + Directory iterators may fail to construct for a network share on
        Windows prior to 10, see PR#246 and #245. Patch.
      + On Windows, weakly_canonical fails to process paths that start with the
        "\\?\" prefix, see #247. Patch.
      + On POSIX systems that don't support *at APIs, compilation fails due to
        a missing include, see #250. Patch.
  * Unordered
      + Containers are not in a valid state after moving, see #139. Patch.
      + Fix MSVC /RTCc build runtime failures. Patch.

New Libraries

  * No new libraries.

Updated Libraries

  * Asio:
      + Added a deduced trailing return type to all asynchronous operations, to
        enable the new form of async_result for C++11.
      + Moved append, prepend, as_tuple, and deferred to the boost::asio
        namespace, and made them compatible with C++11.
      + Made experimental::parallel_group compatible with C++11.
      + Added buffer() overloads for contiguous containers, such as std::span.
      + Added the ability for awaitable<>-based coroutines to directly co_await
        operations that are packaged as function objects.
      + Changed spawn() to be a completion token-based asynchronous operation,
        and added support for cancellation. The basic_yield_context token now
        supports move-only and variadic result types. When targeting C++11 and
        later, spawn() and basic_yield_context are implemented in terms of
        Boost.Context directly.
      + Added the is_async_operation trait and async_operation concept.
      + Added the completion_signature_of trait.
      + Added converting move construction/assignment to posix descriptors,
        serial ports, pipes, Windows object_handle, Windows stream handles, and
        Windows random-access handles.
      + Added release() member functions to pipes, Windows stream handles, and
        Windows random-access handles.
      + Enabled support for Endpoint implementations that return void pointers
        from their data() member functions, as per the documented Endpoint type
      + Removed all() and race() from experimental::promise, as experimental::
        parallel_group covers this functionality.
      + Added source locations to exceptions and error codes produced by the
        synchronous and asynchronous operations.
      + Fixed compatibility with OpenSSL 3.0.4 and later.
      + Fixed compatibility with with -masm=intel.
      + Explicitly stated that socket shutdown() calls are thread-safe with
        respect to certain other synchronous operations on the same socket.
      + Optimised the move construction of I/O objects where only the executor
        type differs.
      + Fixed the detection of std::invoke_result for clang/libc++.
      + Fixed an issue where experimental::parallel_group initiation
        incorrectly moved arguments instead of forwarding them.
      + Fixed a sequencing issue in the implementation of post(), dispatch(),
        and defer().
      + Fixed the awaitable<> implementation to propagate exceptions from
        awaited initiation functions through the current completion handler.
      + Fixed detection of std::aligned_alloc with gcc 7.
      + Changed to avoid using the soon-to-be-deprecated std::aligned_storage
        on newer compilers.
      + Fixed detection of std::aligned_alloc for older Apple platforms.
      + Removed faulty assertions from experimental::coro implementation.
      + Added defence against Qt-defined macros when building with Intel C++.
      + Changed the implementation of the select_reactor, on Windows, to ensure
        that any exception resulting from failure to recreate its interrupter's
        sockets will be allowed to propagate out through io_context::run().
      + Fixed various compiler warnings.
      + Updated all composed operations examples, and the C++11 timeouts
        example, to use the new async_result form.
      + Added composed operation and coroutine examples for C++20.
      + Consult the Revision History for further details.
  * Atomic:
      + Improved portability of endianness checks on ARM, AArch32 and AArch64
        targets. (#59)
      + Fixed compilation with MSVC 14.0 (Visual Studio 2015) in C++17 mode. (#
  * Filesystem:
      + On Windows, added a fallback implementation for querying file
        attributes in case if the file cannot be opened with
        ERROR_ACCESS_DENIED error. This may allow status and symlink_status to
        succeed for system files and directories that are not reparse points or
        symlinks. (#234)
      + On Windows, added a workaround for FAT/exFAT filesystems that produce
        ERROR_INVALID_PARAMETER when querying file attributes. This affected
        status and symlink_status, which reported that files do not exist, and
        directory iterators, which failed to construct, as well as other
        dependent operations. (#236, #237)
      + Worked around a compilation problem on RTEMS. (PR#240)
      + On Linux, corrected switching to sendfile copy_file implementation if
        copy_file_range failed with ENOSYS in runtime. The sendfile fallback
        implementation used to skip the filesystem type check and could fail
        for some filesystems.
      + On POSIX systems supporting openat and related APIs defined in
        POSIX.1-2008 and on Windows Vista and later, improved protection of
        remove_all against CVE-2022-21658 that was implemented in the previous
        release. The previous fix could still result in removing unintended
        files in certain conditions. Other systems remain vulnerable.
  * GIL: NOTICE: We are planning BREAKING switch to C++17 as minimum required
    C++ language version in one or two releases after Boost 1.80 (#676)
      + Added
          o GSoC 2020: Added Perona-Malik anisotropic diffusion algorithm (PR#
          o GSoC 2020: Added histogram class and related functionality (PR#499)
          o GSoC 2020: Added histogram equalization feature (PR#514)
          o GSoC 2020: Added histogram matching algorithm (PR#515)
          o GSoC 2020: Added ability to stack images either horizontally (
            hstack) or vertically (vstack) (PR#506)
          o GSoC 2020: Added adaptive histogram equalization algorithm (PR#516)
          o GSoC 2020: Added Standard Hough Transform and circle rasterization
          o GSoC 2020: Added Bresenham's algorithm for line rasterization (PR#
          o GSoC 2021: Added rotation of image by arbitrary angle around its
            center (PR#565)
          o GSoC 2021: Added rasterization support for ellipse based on "An
            Efficient Ellipse-Drawing Algorithm" by Jerry Van Aken (PR#585)
          o Added image constructor from compatible view (PR#520)
          o Added inverse function for affine matrix3x2 (PR#527)
          o Added standard morphological transformations (PR#541)
          o Added for_each_pixel overload for any_image (PR#648)
          o Added C++17 polymorphic memory resource typedefs for image class (
      + Changed
          o BREAKING: The required minimum C++ version is changed from from
            C++11 to C++14. Currently, large parts of GIL still compile with a
            C++11 compiler. However, there is no guarantee that it stays that
            way, and any compilers that do not support at least C++14 are
            considered unsupported as of now.
          o BREAKING: any_color_converted_view() is deprecated and will be
            removed in the next release. Use color_converted_view() instead,
            which provides the same feature.
          o BREAKING: apply_operation for any_image is deprecated and will be
            removed in the next release. Use variant2::visit instead, which
            provides the same feature. (PR#656)
          o Moved numeric extension to core (PR#573)
          o Added support for C++17's <filesystem> (PR#636) The availability of
            the std::filesystem is detected automatically, unless the
            BOOST_GIL_IO_USE_BOOST_FILESYSTEM macro is defined that forces the
            preference of the Boost.Filesystem.
          o Renamed pixel_multiply_t to pixel_multiplies_t and pixel_divide_t
            to pixel_divides_t (PR#655)
          o Renamed io/dynamic_io_new.hpp to io/detail/dynamic.hpp (PR#653)
          o Moved function construct_matched into boost::gil::detail namespace
            as it was only used by other implementation details (PR#653)
          o Made packed_pixel trivially copyable and assignable (PR#679)
          o Replace deprecated libtiff v4.3 typedefs with C99 fixed-size
            integers (PR#685)
      + Removed
          o BREAKING: Removed support for GCC 5 (PR#572)
          o Removed deprecated.hpp (PR#627)
      + Fixed
          o Fixed conversion from RGB to HSL (PR#505)
          o Fixed conversion from RGB to signed CMYK (PR#522)
          o Removed unnecessary numeric cast in hsv.hpp (PR#530)
          o Fixed default constructor for homogeneous_color_base for reference
            pixel elements (PR#542)
          o Fixed returning reference to local temporary object in
            subchroma_image_view (PR#556)
          o Added missing header guards in diffusion.hpp (PR#568)
          o Fixed any_image_view<>::const_t (PR#526)
          o Fixed C++20 incompatibilities in I/O extensions (PR#617)
          o Ensured all examples build without errors (PR#628)
          o Fixed convolve_2d for images with float32_t channel model (PR#577)
          o Fixed for_each_pixel for non-1d iterable views (PR#621)
          o Fixed: is_equal_to_sixteen in PNG I/O was less-than test (PR#650)
          o Re-allow devicen_t with two components (PR#654) It was
            unintentionally removed in Boost 1.72
          o Fixed memory leak in image class for empty dimensions (PR#649)
      + Acknowledgements
          o Cypre55, Samuel Debionne, Mike-Devel, Edward Diener, Peter Dimov,
            Omar Emara, Dhruva Gole, Nicolas Herry, Eugene K, Avinal Kumar,
            Gaurav Kumar, Marco Langer, Pranam Lashkari, Mateusz ??oskot,
            Giovanni Mascellani, Debabrata Mandal, Gopi Krishna Menon, Ren??
            Ferdinand Rivera Morell, Felix Morgner, Harshit Pant, Paul92, Andr
            ?? Schr?der, Scramjet911, Siddharth, Dirk Stolle, Prathamesh
            Tagore, theroyn, Olzhas Zhumabek
  * Graph:
      + Bug fixes:
          o Fix bug in stoer_wagner_min_cut where vertices are not merged at
            the end of each mincut phase (#286)
          o Fix conversion warning for return type of strong_components (#293)
          o Fix compilation failure of boykov_kolmogorov_max_flow named
            parameter overload (#232)
      + General code improvements:
          o Remove redundant call to combine in astar_search_no_init_tree (#260
          o Remove redundant child_idx argument of d_ary_heap_indirect<>::child
          o Improve documentation for traversal categories (#303)
      + Acknowledgements
          o Viktor Pti, Sebastian Brockmeyer, Etienne dg
  * Histogram:
      + Fixed segfault in indexed when trying to iterate over histogram with
        axes of zero size (physical or logical) under certain conditions
      + Removed previously deprecated API
          o class accumulators::thread_safe: use accumulators::count<T, true>
          o Methods accumulators::sum::large and accumulators::sum::small: use
            accumulators::sum::large_part and accumulators::sum::small_part
          o Type alias algorithm::reduce_option: use algorithm::reduce_command
          o Template function axis::traits::static_options: use axis::traits::
          o Template function axis::traits::static_is_inclusive: use axis::
          o Type alias indexed::range_iterator: use indexed::iterator
          o Type alias indexed::accessor::reference: use indexed::accessor::
  * Iterator:
      + For C++11 and later, added support for perfect forwarding of values
        written to function_output_iterator. (PR#73)
      + Added protection against writing to function_output_iterator a result
        of dereferencing another function_output_iterator.
  * JSON:
      + Added non-const value::at overloads.
      + Added the ability to manually choose endianness of the platform.
      + Added string::subview() overload.
      + Fixed segfault in array::erase(it).
      + Fixed low performance of serialize on libc++.
      + Fixed ambigious conversion to std::string_view on GCC 8.
      + Fixed parsing on big-endian platforms.
      + Fixed handling of comment after trailing comma.
  * LEAF:
      + API breaking change: throw leaf::exception(....) now becomes
      + Fixed a bug in support for a rare build configuration (exception
        handling enabled, diagnostics disabled)
      + Using nullptr instead of 0 throughout
      + Fixed pedantic warnings
  * Locale:
      + Deprecated support for C++03 and earlier, C++11 will be required in the
        next release
      + Provide -sICU_LINK_LOCALE as a temporary replacement for -sICU_LINK
        which is incompatible with Boost.Regex. -sICU_LINK_LOCALE and -
        sICU_LINK are deprecated and will be replaced by ICU_*_NAME options to
        be compatible with Boost.Regex
      + Fix UB/assertion failure in the ICU collator implementation when
        transforming empty strings
      + Fix some issues related to visibility of classes in shared libraries
        (Unix only)
      + Fix compatibility with C++20 mode
      + Fix compatibility with BOOST_USE_WINDOWS_H
      + Fix build failures due to missing includes
      + Handle or suppress many warnings which makes the build log cleaner
  * Log:
      + Bug fixes:
          o Fixed binding incorrect local address in UDP socket-based
            syslog_backend when IPv6 address is used for the syslog server. (#
          o Added a workaround for a bug in libstdc++ from gcc 11.2. When
            max_size_decor was used on a formatting stream, std::codecvt::
            do_length incorrectly accessed the input buffer and caused a buffer
      + See changelog for more details.
  * Math:
      + Deprecated C++11 support: from 2023 we will require C++14 as a minimum
        standard. This will mean GCC-5 or MSVC-14.1 as a minimal requirement.
      + Add constexpr fma support, see 734.
      + Add support for the Chatterjee Correlation Coefficient, see 770.
      + Added support for the logarithm of the PDF for all the distributions.
      + Improve support for building with no exception or RTTI support.
      + Some minor bug fixes for [sub 1]F[sub 1] corner cases, see 778.
  * Multiprecision:
      + Mark C++11 support as deprecated: from 2023 we will move to requiring
        C++14 as a minimum standard level. That will drop support for GCC
        versions prior to 5 and MSVC prior to 14.1.
      + Fix conflict between boost/cstdfloat.hpp and this library.
      + Clean up lots of gcc and clang warnings.
      + Fix input streaming of composite types (complex, interval rational)
        where there is a trailing delimeter in the stream and no whitespace.
      + Fix constexpr integer square root where the input is 1, 2 or 3.
      + Add missing #include of <memory> to float128.hpp.
      + Correct 2-arg constructor for class number to prevent ambiguity in some
      + Correct and make more consistent behaviour of divide-by-zero in
  * Multi-index Containers:
      + Maintenance work.
  * Nowide:
      + Major performance improvement for Bulk I/O with files
      + basic_filebuf: Fix wrong return value of sync when fflush failed
      + basic_filebuf: Fix possible undefined behavior in a corner case when
        nothing was actually written but buffer is in "write" mode
      + basic_filebuf: Limit putback of characters (i.e. pbackfail) only
        allowing putback of buffered characters (may be only 1 character)
  * Optional:
      + Added specializations for std::hash<boost::optional<T>>. This is a
        breaking change for programs that define such specializations
        themselves. For more details see specs.
  * STLInterfaces:
      + Fix #53: "missing 'typename' prior to dependent type name
      + Fix #54: "Concept check fails on .data() of a view on contiguous
        iterator_interface instantiations"
      + New additions to make it easy to write views and view adaptors that
        work like, and interoperate with, the ones in the standard library:
          o Add workalikes for C++23's std::bind_back() and std::
            range_adaptor_closure for pre-C++23 code.
          o Add templates closure and adaptor to make writing view adaptors
            easier, following the examples in P2387.
  * System:
      + When an error_code is converted to std::error_code and then back to
        error_code, the original is now restored, if possible.
      + Reworked the conversion from error_category to std::error_category to
        avoid the one-time allocation that shows up on leak checkers.
      + Added a constructor that allows replacing the source location of an
        error_code, and a corresponding assign.
      + Added a converting constructor to result.
  * Unordered: Major update:
      + Refactor internal implementation to be dramatically faster
      + Allow final Hasher and KeyEqual objects
      + Update documentation, adding benchmark graphs and notes on the new
        internal data structures
  * Utility:
      + In string_view/string_ref, fixed max_size returning incorrect value. (#
      + Removed noexcept specifier from string_view::compare as it may throw on
        some input arguments. (#94)
      + In string_view/string_ref, added support for calling substr with no
        arguments. (#96)
      + Added string_view::contains methods that were introduced in C++23. (#93
      + In string_view, added asserts in remove_prefix/remove_suffix methods to
        enforce the precondition that the prefix/suffix length does not exceed
        the string view size. The previous (undocumented) behavior of silently
        clamping the prefix/suffix length is deprecated and will be removed in
        a future release. (#92)
  * Wave: Fixed bugs:
      + #24: Line numbers wrong after conditional section
      + #160: one test fails with error C2660 and error C2440 under msvc /
        permissive- mode
      + #161: BOOST_WAVE_THROW_NAME_CTX does not result in a context callback
        and always throws
      + #162: When Boost headers are included in the preprocessed translation
        unit, Wave fails in boost/integer.hpp(99)

Updated Tools

  * Build:
      + Includes release of B2 version 4.9.2.

Version 1.79.0

Known Issues

These are patches from library authors which were found too late to be fixed in
the release.

  * Boost.JSON array::erase can segfault, see #692. Patch.

New Libraries

  * No new libraries.

Updated Libraries

  * Asio:
      + Added bind_allocator.
      + Added file_base::sync_all_on_write flag.
      + Added missing implementation of basic_file::release().
      + Added per-operation cancellation support to signal sets.
      + Exposed recycling_allocator as part of the public interface.
      + Added the nodiscard attribute to a number of functions.
      + Added OpenSSL 3.0 compatibility.
      + Added support for adopting an existing SSL* into an ssl::stream<>.
      + Enabled executor_work_guard<> in all build configurations.
      + Enabled movable socket iostreams when using clang.
      + Fixed bind_cancellation_slot and bind_executor compatibility with
        legacy completion tokens.
      + Fixed associator specialisations for experimental::append and
      + Fixed associated_allocator primary template.
      + Fixed io_uring implementations of async_receive_from for sockets and
        write_some_at for files.
      + Fixed io_uring feature detection.
      + Fixed experimental::coro's per-operation cancellation.
      + Fixed memory management in experimental::promise's type-erased
        completion handlers.
      + Fixed move operator= implementation for ssl::stream.
      + Fixed any_io_executor implementation to work when both
      + Fixed implementation of basic_socket::at_mark() when using the
        sockatmark() system call.
      + Changed the recycling allocator to use the default alignment as the
        minimum alignment for allocations.
      + Added a workaround for apparent coroutine codegen bug with Apple's
      + On Windows, changed the file support to open files using the same
        sharing mode as fopen().
      + On Linux, fixed UNIX domain sockets implementation to correctly handle
      + Fixed implementation of experimental::basic_channel::reset() and
      + Fixed potential undefined behaviour in the experimental::promise.
      + Changed the co_spawn implementation to dispatch cancellation signals
        through the executor in some circumstances.
      + Fixed various header inclusion issues.
      + Fixed various warnings.
      + A number of documentation enhancements, including:
          o Added an overview of Asio's asynchronous model.
          o Reworked reference and requirements documentation in terms of
            asynchronous model.
          o Updated documentation for dispatch(), post(), and defer().
          o Documented per-operation cancellation for serial ports.
          o Clarified the non-concurrency guarantees made for allocators.
          o Reverted the io_context reference documentation to use
          o Added more detailed reference documentation to make_strand(),
            make_work_guard(), ip::address_v4, ip::address_v6, experimental::
            basic_channel, and experimental::basic_concurrent_channel.
          o Re-arranged and extended the Overview documentation to cover
            recently added features.
      + Added a C++11 example showing file descriptor passing over local
      + Added C++14 examples of wrapping callback-based APIs in asynchronous
      + Consult the Revision History for further details.
  * Assert:
      + source_location().file_name() and source_location().function_name() now
        return "" instead of "(unknown)".
      + Added a source_location constructor from std::source_location.
      + Changed BOOST_CURRENT_LOCATION to more closely match the behavior of
        std::source_location::current(), such as being usable at top level or
        as a default function argument.
  * Atomic:
      + Fixed compilation for Universal Windows Platform (UWP). (#54)
      + Added BOOST_ATOMIC_NO_DARWIN_ULOCK configuration macro. The macro
        affects compilation on Darwin systems and disables ulock-based
        implementation of waiting and notifying operations. This may be useful
        to comply with Apple App Store requirements. (#55)
  * Beast:
      + Added missing include for file_body test.
      + Fixed WebSocket handshake response on failure.
      + Fixed open append mode for file_posix and file_win32.
      + Fixed file open with append/append_existing flag on Windows
      + Fixed clang-cl UTF8 path handling for file_win32 and file_stdio.
      + Added ARM64 builds to drone CI.
      + Fixed async_base documentation link.
      + Added tests for file open in append/append_existing mode.
      + Updated CI to include gcc 11, clang 12, msvc 14.3.
      + Added individual tests to CMake workflow.
      + We'd love to know how you or your company use Beast, consider adding an
        entry to the Companies and Individuals Using Beast list.
      + See the full Release Notes for a complete list of changes.
  * Core:
      + Made boost::pointer_traits SFINAE friendly, addressing LWG3545. (Glen
      + Added boost::allocator_traits that uses the individual allocator access
        traits. This implementation supports C++03 and above. (Glen Fernandes)
      + Updated the allocator access traits to support most of the C++11
        allocator model in C++03. (Glen Fernandes)
      + boost/iterator.hpp is deprecated and will be removed in a future
        release. The header defines boost::iterator template, which is
        equivalent to std::iterator in <iterator> header. However, since std::
        iterator is itself deprecated in C++17, users are advised to remove
        boost::iterator or std::iterator use from their code.
      + Added boost::core::verbose_terminate_handler, a utility function
        intended to be passed to std::set_terminate that prints information
        about the uncaught exception to stderr.
  * Describe:
      + Enabled unions in BOOST_DESCRIBE_STRUCT and updated examples to check
      + Added example of defining a fmtlib class formatter.
      + Added example of defining a fmtlib enum formatter.
      + Added example of printing pointers to members.
  * Filesystem:
      + v3: path::replace_extension now works in terms of v3 definition of path
        ::extension rather than v4.
      + Fixed compilation of path appending and concatenation operators with
        arguments of types convertible to path or compatible string type. (#223
      + On POSIX systems that support fdopendir and O_NOFOLLOW and on Windows,
        remove_all is now protected against CVE-2022-21658. The vulnerability
        is a race condition that allows a third party process to replace a
        directory that is being concurrently processed by remove_all with a
        directory symlink and cause remove_all to follow the symlink and remove
        files in the linked directory instead of removing the symlink itself. (
      + On Windows, in remove and remove_all implementation, use POSIX
        semantics for file removal, when supported by the OS (Windows 10 1709
        and later). When POSIX semantics is supported, the file name is removed
        from the filesystem namespace as soon as the file is marked for
        deletion, even if it is still open and in use. With legacy Windows
        semantics, the file name remains present in the the filesystem
        namespace until the last file handle to the file is closed, which
        allows the file marked for deletion to be opened and prevents creating
        new files with the same name. (#216)
      + On Windows, remove and remove_all now support deleting read-only
        directories. Support for removing read-only non-directory files was
        added previously.
      + On Windows, directory_iterator internal implementation has been
        reworked to better utilize modern Windows APIs, which may improve
        performance while handling symlinks.
      + On Windows, initialize internal WinAPI function pointers early, if
        possible, to allow Boost.Filesystem operations to be invoked in global
        constructors. This is only supported on MSVC, GCC, Clang and compatible
      + On Windows, resize_file should no longer fail with an error if the file
        to be resized is opened.
      + Disabled use of the statx syscall on Android prior to 11.0 (API version
        30). The syscall is blacklisted by seccomp and causes process
        termination in runtime. (#229)
      + Deprecated: boost/filesystem/string_file.hpp header is deprecated and
        will be removed in a future release. The header is no longer included
        by boost/filesystem.hpp by default. Users are advised to implement the
        functionality themselves or migrate to other implementations.
      + Deprecated: Windows CE support is deprecated and will be removed in a
        future release. Windows CE has been untested for many years and is
        likely non-functional.
  * Geometry:
      + Major change
          o PR#977 Rescaling is turned off by default. This avoids many related
            bugs in set operations and buffer.
      + Improvements
          o PR#923 Added algorithm closest_points for cartesian point/geometry.
          o PR#939 Added algorithm closest_points for other coordinate systems
            and geometry combinations excl. boxes.
          o PR#961 Added Web Mercator projection.
          o PR#966 More efficient cartesian distance strategy used in simplify.
      + Solved issues
          o #956 Result of simplify algorithm with incorrect closure.
          o #962 Runtime error in R-tree deserialization due to load factor.
          o #971 R-tree insertion time impacted by use of long double on ARM
      + Bugfixes
          o PR#936 Envelope of polygon containing pole.
          o PR#948 Spherical and geographic envelope for near meridian
          o PR#974 Spheroidal normalization utilities for NaN coordinates.
          o Various fixes in set operations and buffer.
  * Integer:
      + Optimized integer_log2 implementation to use bit operations internally.
        This allows to employ bit instructions available on most modern CPUs. (
  * IO:
      + Added boost::io::basic_nullbuf, a null stream buffer, and boost::
        basic_onullstream, a null output stream (Glen Fernandes).
  * Iterator:
      + In counting_iterator, added support for built-in 128-bit integer types
        supported by gcc and clang and compatible compilers on some target
      + Silenced gcc warnings about deprecated implicit copy assignment
        operator in counting_iterator.
  * JSON:
      + Standalone mode of the library is removed. Users who wish to continue
        using standalone JSON can switch to the C++ Alliance fork.
      + Add std::error_code overloads.
      + Add boost::source_location to error_codes.
      + Add support for JSON Pointer.
      + Naturally grow string during serialization.
  * LEAF:
      + Support for FreeRTOS and other embedded platforms
      + Improved diagnostic information
      + Improved configuration macros
      + BOOST_LEAF_CHECK using statement expressions under __GNUC__
      + Fixed symbol demangling bug
  * Log:
      + General changes:
          o In text_file_backend, added support for appending to a previously
            written log file, when file rotation is used and log file names use
            file counters.
          o Breaking change: The file_collector interface has changed:
              # scan_for_files method returns a scan_result structure that
                contains information collected during the scan;
              # is_in_storage method added for testing if a path refers to a
                file within the target storage directory.
          o Added a new invoke_manip stream manipulator that can be used for
            injecting user's function into a stream output expression.
      + Bug fixes:
          o Fixed file counter being set to zero if the user calls
            text_file_backend::scan_for_files multiple times, and the second
            and the following calls don't find any new files. (#179)
      + See changelog for more details.
  * Multi-index Containers:
      + Improved the efficiency of count operations in ranked indices from O(
        log(n) + count) to O(log(n)). Contributed by Damian Sawicki.
      + Maintenance work.
  * Nowide:
      + Fix compilation issues on some platforms (e.g. GCC 11 on MinGW-w64 and
      + Fix missing include when using BOOST_USE_WINDOWS_H and
      + Add sanity check when using boost::nowide::stat with boost::nowide::
  * Optional:
      + Fixed issue #98.
      + Fixed issue #92.
      + Added support for BOOST_NO_IOSTREAM.
      + Now aligned storage uses unsigned char rather than char to avoid UB.
      + Now using cv-unqualified value_type with placement new to avoid UB.
  * Predef:
      + Version 1.14.0
      + Add detection of LoongArch (from Zhang Na).
  * QVM:
      + Added constexpr under C++17
      + Improved single header distribution
  * Smart Pointers:
      + Added boost::get_allocator_pointer to obtain the Allocator pointer from
        the result of boost::allocate_unique (Glen Fernandes).
  * System:
      + Added a boost::source_location parameter to throw_exception_from_error.
      + Added throw_exception_from_error overloads for errc::errc_t, std::
        error_code, std::errc, std::exception_ptr.
      + result<T>::value now automatically supplies BOOST_CURRENT_LOCATION to
        throw_exception_from_error via a default argument.
      + Added an errc::make_error_code overload taking a source location.
  * ThrowException:
      + Added boost::throw_with_location, a more lightweight alternative of
        BOOST_THROW_EXCEPTION for programs that do not use Boost.Exception.
  * Unordered:
      + All containers have been updated to support heterogeneous count,
        equal_range and find.
      + All containers now implement the member function contains.
      + erase_if has been implemented for all containers.
      + All containers have been updated to support heterogeneous erase and
      + Changed behavior of reserve to eagerly allocate.
      + Various warning fixes in the test suite.
      + Update code to internally use boost::allocator_traits.
      + Switch to Fibonacci hashing.
      + Update documentation to be written in AsciiDoc instead of QuickBook.
  * Variant2:
      + Added operator<< for monostate.
  * Wave:
      + C++11 now required for building Wave itself
      + Fixed bugs:
          o #135: Comma operators in array subscripts are deprecated in C++20
          o #137: Simple unknown directive => found_unknown_directive is not
            called, stripped of pound.
          o #138: Empty ifdef block does not emit line directive for missing
          o #143: Parsing __has_include() fails with trailing tokens
          o #145: Sanitizer complains about reset_version()
          o #147: bitwise operations between different enumeration types are

Updated Tools

  * Build:
      + Includes release of B2 version 4.8.2.

Revision 1.21 / (download) - annotate - [select for diffs], Mon Jan 10 01:23:31 2022 UTC (2 years, 1 month ago) by ryoon
Branch: MAIN
CVS Tags: pkgsrc-2022Q4-base, pkgsrc-2022Q4, pkgsrc-2022Q3-base, pkgsrc-2022Q3, pkgsrc-2022Q2-base, pkgsrc-2022Q2, pkgsrc-2022Q1-base, pkgsrc-2022Q1
Changes since 1.20: +3 -3 lines
Diff to previous 1.20 (colored)

boost: Update to 1.78.0

Version 1.78.0

Known Issues

These are patches from library authors which were found too late to be fixed in
the release.

  * Boost.Build silently skips installation of library headers and binaries in
    some cases, see #104.
      + Fixed in PR#113, patch.
  * Boost.Atomic fails to build when targeting UWP, see #54. Patch.

New Libraries

  * No new libraries.

Updated Libraries

  * Asio:
      + Added an io_uring backend that may optionally be used for all I/O
        objects, including sockets, timers, and posix descriptors.
      + Added support for files, with new new classes for stream-oriented and
        random-access files. This feature currently supports I/O completion
        ports on Windows, and io_uring on Linux.
      + Added support for portable pipes on POSIX and Windows (when I/O
        completion ports are available).
      + Added support for registered buffers, which are optimised when using
        the io_uring backend.
      + Added experimental support for channels, that may be used to send and
        queue completions as messages.
      + Implemented improvements to experimental::coro.
      + Disabled aligned_alloc on clang when using an MSVC runtime.
      + Changed to use a faster implementation for ip::network_v4::canonical().
      + Added template specialisations for common uses to improve compile time.
      + Reduced the size of io_context executors to a single pointer.
      + Increased the small object buffer size for execution::any_executor and
      + Fixed multi-signature handling when variadic templates are disabled.
      + Fixed compatibility with new versions of gcc and clang.
      + Fixed compilation on Solaris.
      + Fixed defence against Qt-defined macros when building with MSVC.
      + Improved error messages emitted by ssl facilities.
      + Fixed bind_executor compatibility with completion tokens.
      + Fixed build errors when BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT is
      + Added missing move assignment operator to awaitable<>.
      + Fixed an access violation when using coroutines with MSVC, due to
        incorrect alignment of allocated memory.
      + Fixed a cleanup issue in experimental::parallel_group that occured when
        the execution context was shut down with parallel operations still
      + Added clarifications to the documentation on concurrency hints.
      + Added documentation on error handling techniques for C++20 coroutines.
      + Fixed various warnings.
      + Consult the Revision History for further details.
  * Assert:
      + Added source_location::to_string.
  * Atomic:
      + Use process-local futex operations on Android for non-IPC waiting and
        notifying operations.
      + Added support for Linux targets that only define SYS_futex_time64
        syscall, such as riscv32.
      + Added a workaround for incorrect result of std::alignment_of on clang 8
        for 64-bit types on 32-bit x86 targets.
      + Added a ulock backend for waiting and notifying operations on Darwin
        systems since Mac OS 10.12, iOS 10.0, tvOS 10.0 or watchOS 3.0.
      + On Windows, corrected discrepancy between atomic-type
        ::always_has_native_wait_notify and the corresponding capability macros
        when targeting Windows 8 or later. The library will now directly use
        WaitOnAddress and related APIs from public headers and therefore
        require user to link with synchronization.lib if the user requires
        Windows 8 or later by defining BOOST_USE_WINAPI_VERSION, _WIN32_WINNT
        or similar macros. The library is linked automatically on compilers
        that support auto-linking (e.g. MSVC).
      + Added support for types with padding bits, except unions, on compilers
        that provide a way to clear the padding bits. This feature is supported
        by gcc 11 and MSVC 14.2 (compiler version 19.27) and newer, as well as
        other compilers supporting similar intrinsics. On compilers that don't
        allow to clear the padding bits, types with padding are still generally
        not supported with the exception of 80-bit long double on x86 targets.
        A new BOOST_ATOMIC_NO_CLEAR_PADDING capability macro is defined to
        indicate when clearing the padding is not supported.
      + Initializing constructors of atomic_ref and ipc_atomic_ref no longer
        use atomic instructions to clear the padding bits in the referenced
        object. This reduces the cost of the atomic reference construction.
      + Initializing constructors of atomic and ipc_atomic are now constexpr
        for enums, classes and floating point types. For classes and floating
        point types, the constructors are constexpr if the compiler supports
        constexpr std::bit_cast, the type has no padding bytes and no padding
        is required to implement native atomic operations.
      + In accordance with C++20, default constructors of atomic and ipc_atomic
        now perform value initialization of the contained object. For types
        without a user-defined default constructor, this means the
        default-constructed atomic will be zero-initialized.
      + Added a workaround for compilation error on AIX caused by the assembler
        tool not supporting numeric labels. (PR#50)
      + Added a workaround for compilation error with Visual Studio 2015 prior
        to Update 3. (#52)
      + See changelog for more details.
  * Beast:
      + This maintenance update brings minor bug fixes and updated CI
      + Fixed security vulnerability CVE-2016-9840 in zlib implementation.
      + Fixed WebSocket permessage_deflate implementation. This should result
        in an increase in compression performance when using Beast WebSockets.
      + Removed the test stream and test framework's dependency on RTTI. You
        can now use our handy test stream to check your embedded asynchronous
        communications code!
      + We'd love to know how you or your company use Beast, consider adding an
        entry to the Companies and Individuals Using Beast list.
      + See the full Release Notes for a complete list of changes.
  * Core:
      + Added a generic implementation to <boost/core/cmath.hpp>, enabled when
        BOOST_CORE_USE_GENERIC_CMATH is defined or when the platform does not
        provide the necessary facilities in <cmath>.
      + Added boost::core::type_name, a utility function that returns the name
        of a type as a string.
      + Added boost::span, a C++11 implementation of C++20's std::span (Glen
  * Describe:
      + Added has_describe_enumerators, has_describe_bases,
      + Added enum_to_string, enum_from_string.
      + Added relational and stream insertion operators.
      + Added descriptor_by_name, descriptor_by_pointer.
  * DLL:
      + Fixed missing #include, thanks to Denis Blank (PR#54)
      + Dropped TravisCI in favor of GithubAction CI
  * Filesystem:
      + v4: path::filename and path::iterator no longer return an implicit
        trailing dot (".") element if the path ends with a directory separator.
        Instead, an empty path is returned, similar to C++17 std::filesystem.
        This also affects other methods that are defined in terms of iterators
        or filename, such as path::stem, path::compare or
        lexicographical_compare. For example, path("a/b/") == path("a/b/.") no
        longer holds true. (#193)
      + v4: path::lexically_normal no longer produce a trailing dot (".")
        element and omits a directory separator after a trailing dot-dot ("..")
        element in the normalized paths.
      + v4: path append operations now consider root name and root directory in
        the appended path. If the appended path is absolute, or root name is
        present and differs from the source path, the resulting path is
        equivalent to the appended path. If root directory is present, the
        result is the root directory and relative path rebased on top of the
        root name of the source path. Otherwise, the behavior is similar to v3.
      + path::lexically_normal now converts directory separators to preferred
        separators in the root name of the normalized paths.
      + Optimized overloads of path::assign, path::append, path::concat and the
        corresponding operators to avoid unnecessary path copying and reduce
        the amount of code redundancy.
      + On POSIX systems, fixed absolute(p, base) returning a path with root
        name base.root_name() if p starts with a root directory. In such a case
        p is already an absolute path and should be returned as is.
      + create_directories no longer reports an error if the input path
        consists entirely of dot (".") and dot-dot ("..") elements. The
        implementation is no longer using recursion internally and therefore is
        better protected from stack overflow on extremely long paths.
      + On Windows, remove now supports deleting read-only files. The operation
        will attempt to reset the read-only attribute prior to removal. Note
        that this introduces a possibility of the read-only attribute being
        left unset, if the operation fails and the original value of the
        attribute fails to be restored. This also affects remove_all. (#216)
      + remove_all now returns static_cast< uintmax_t >(-1) in case of error,
        similar to C++17 std::filesystem.
      + Fixed a linking error about unresolved references to
        Boost.ContainerHash functions when user's code includes boost/
        filesystem/path.hpp but not boost/container_hash/hash.hpp and the
        compiler is set to preserve unused inline functions. (#215)
      + Added a workaround for MSVC and compatible compilers eliminating path
        globals cleanup in release builds. This could lead to a memory leak if
        Boost.Filesystem shared library was repeatedly loaded and unloaded in
        the process. (#217)
  * Geometry:
      + Improvements
          o PR#894 Optimization and refactoring of rtree queries.
          o PR#913 DynamicGeometry and GeometryCollection support in various
            algorithms (undocumented for now).
          o PR#922 DynamicGeometry and GeometryCollection support in distance
            (undocumented for now).
      + Solved issues
          o #867 Poor performance of rtree query iterator with nearest
            predicate for big k.
          o #870 Compilation error in boost::geometry::self_turns.
          o #896 Assertion failure in get_turns with
      + Bugfixes
          o PR#906 Invalid result of buffer on macos-11 with clang-12.
          o PR#921 Compilation errors with c++20 (various compilers) and gcc-5.
          o Various fixes in set operations and buffer.
  * JSON:
      + Standalone mode of the library is deprecated.
      + Allow external libraries to forward declare value_to and value_from.
      + Fixed signed integer overflow in number parsing.
      + Add support for /Zc:implicitNoexcept- on MSVC.
  * Lambda2:
      + Added special cases in operator<< and operator>> when the first
        argument is a stream, to allow std::cout << _1.
      + Added operator->*.
      + Added first, second.
  * Log:
      + General changes:
          o Updated detection of std::codecvt specializations for char16_t and
            char32_t for compatibility with C++17 and later. (PR#159)
          o Added support for C++17 std::byte type to receive methods of the
            inter-process message queue.
          o On Windows, when building the library for Windows 8 or later, the
            library will use nt62 tag in the version namespace to denote the
            target OS ABI. For example, the version namespace could be named as
            v2_mt_nt62. This name will be part of all symbols exported by the
            library. Use the BOOST_USE_WINAPI_VERSION macro consistenly when
            building Boost and your code to request the minimum target Windows
          o Improved performance of SSSE3 and AVX2 implementations of the dump
            stream manipulator.
          o Added support for CMake build system. Only library build is
            supported at this moment, Boost.Build is still used for running
      + Bug fixes:
          o Fixed a race condition on POSIX systems in reliable_message_queue::
            open_or_create or the equivalent constructor. Multiple threads or
            processes calling open_or_create concurrently with sending or
            receiving messages from the same queue could end up corrupting the
            queue contents and potentially crashing the process. (#162)
          o Added a workaround for b2 install failing on Windows because of
            missing boost_log_setup library if
            BOOST_LOG_WITHOUT_SETTINGS_PARSERS is defined. (#164)
      + See changelog for more details.
  * Math:
      + Add support for cubic roots.
      + Add support for constexpr versions of various standard library math
      + Add support for Bezier polynomials.
      + Improve worst-case tanh-sinh integration performance.
      + Disable inadvertant use of integral types in integration routines.
      + Minor update for erf approximations when the result is with 2ulp of 1.
      + Allow Bernoulli code to be used on platforms with no atomic integers.
      + Improve the mode of the non-central Chi Squared distribution.
      + Improve certain edge cases for <cstdfloat> complex-valued elementary
        functions, see #507.
  * Multi-index Containers:
      + Added contains to key-based indices (issue #35).
      + Added merge operations to key-based indices. The functionality goes
        beyond the standard specification for (unordered) associative
        containers in a number of ways, most notably:
          o The source index can be of any type, including non key-based
          o Partial merge is provided: for instance, x.merge(y,first,last)
            merges only the elements of y within [first,last).
      + Previous versions of splice for sequenced and random access indices
        were destructive, i.e. elements were copy-inserted into the destination
        and then erased from the source. Now, splice is based on node transfer
        much as merge in key-based indices, and has been similarly extended to
        accept source indices of any type: in fact, splice can be regarded as a
        frontend to the same functionality provided by merge in key-based
        indices. For reasons of backwards compatibility, the destructive
        behavior of splice has been retained in the case that the source and
        destination containers have unequal allocators.
      + The fact has been documented that index iterator types do only depend
        on node_type and the position of the index in its multi_index_container
        , (except for hashed indices, where uniqueness/non-uniqueness is also a
        dependency). This has implications on the validity of iterators to
        elements transferred by merge or splice. This property is a variant of
        what has been called SCARY iterators in the C++ standard mailing lists.
        SCARYness is currently (August 2021) not mandated for standard
      + Iterator SCARYness is now also preserved in safe mode.
  * Multiprecision:
      + Rework rational_adaptor to remove dependency on Boost.Rational and
        improve performance.
      + Fix issue with type_traits and clang, see #383.
      + Fixed buggy Lehmer's GCD routine, see #370.
      + Fix mpc_complex constructors so that lossy conversions are explicit,
        see #363.
      + Correct miscellaneous configuration issues (Intel intrinsic usage and
        Apple clang).
      + Correct some iostream operators for unsigned char types.
      + Correct mpq_rational conversions to integer types, see #342.
  * PFR:
      + Added missing #include <memory> for inclusion of std::addressof
      + Fixed -Wzero-length-array warning when dealing with empty aggregates
      + Fixed compilation on msvc compilers <= 1920 (thanks to Alexey Romanov
        aka @alexey-romanov)
      + Added basic CMakeLists.txt support (thanks to @pdimov aka Peter Dimov)
      + Multiple improvements for docs, including links to
      + Added misc/ script to remove boost:: and BOOST_
  * Predef:
      + Version 1.13.1
      + Fix spelling of "epoch".
      + Add missing parenthesis in sparc.h (from tkoecker).
      + Update documentation to use Rouge code styling and Amber general style.
  * Regex:
      + Breaking Change: Change \B to be the opposite of \b as per Perl
      + Change w32_regex_traits.hpp so that windows.h is no longer included.
      + Fxed fuzzing related issues #151, #152, #153, #156.
  * System:
      + Added support for source locations to error_code.
      + Added error_code::to_string, error_condition::to_string, error_code::
      + system_error::what() now contains the source location, if present.
      + Added result<T, E = error_code>, a class holding either a value or an
        error, defined in <boost/system/result.hpp>.
  * Utility:
      + Library documentation converted to QuickBook (thanks to Alan de
        Freitas, PR#79).
  * Variant2:
      + Added <boost/variant2.hpp>.
      + Added unsafe_get<I>.
      + Added visit_by_index.
      + Added operator<<.

Updated Tools

  * Build:
      + Includes release of B2 version 4.7.2.

Revision 1.20 / (download) - annotate - [select for diffs], Thu Sep 30 05:32:27 2021 UTC (2 years, 5 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q4-base, pkgsrc-2021Q4
Changes since 1.19: +3 -3 lines
Diff to previous 1.19 (colored)

py-boost: fix version in buildlink

Revision 1.19 / (download) - annotate - [select for diffs], Wed Apr 21 12:09:50 2021 UTC (2 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2021Q3-base, pkgsrc-2021Q3, pkgsrc-2021Q2-base, pkgsrc-2021Q2
Changes since 1.18: +3 -3 lines
Diff to previous 1.18 (colored)

boost: updated to 1.76.0

Updated Libraries

Added ip::scope_id_type type alias.
Added ip::port_type type alias.
Added std::hash specialisations for IP addresses.
Added std::hash specialisations for ip::basic_endpoint<>.
Refactored SFINAE usage to improve compile times.
Added friendship support to customisation points, and made most customisations private.
Changed any_io_executor to a "strong typedef"-style class.
Fixed experimental::as_single to work with handler hook deprecation.
Ensured pthread condition variable attributes are cleaned up on all platforms.
Clarified thread safety notes on sockets and descriptors.
Ensured errno is not overwritten if socket() fails on macOS/FreeBSD.
Fixed work tracking for io_context and thread_pool executors when move-assigned.
Ensured internal call_stack objects are accessed only from implementation files.
Fixed I/O object move-assignment to ensure the executor is left in a valid state.
Fixed detection of compiler support for defaulted template argument on functions with MSVC.
Prevented the blocking.always property from being used with strand<>, as it did not produce the correct semantics.
Removed deprecated file asio/impl/src.cpp.
Fixed compilation with MSVC for ARM.

This update brings minor bug fixes and revamped CI reporting.
We'd love to know how you or your company use Beast, consider adding an entry to the Companies and Individuals Using Beast list.
See the full Release Notes for a complete list of changes.

Add support for using the standard C++11 placeholders with boost::bind.
Update boost::apply to use variadic templates and perfect forwarding.
Added [[no-discard]] attribute in all containers to catch bugs related to unused return values.
Replaced default standard exception classes with Boost.Container own classes, reducing considerably the included files overhead. Example: in MSVC 19 boost/container/vector.hpp preprocessed file size reduces from 1,5MB to 930KB. If you still want to use standard exception classes, you can define BOOST_CONTAINER_USE_STD_EXCEPTIONS before using any Boost.Container class.
Fixed bugs/issues:
GitHub 102: "flat_map::insert ambiguous with initializer list & pairs that need to convert".
GitHub 139: "flat_map merge and iterators".
GitHub 141: "small_vector does not propagate no throw properties of move operation of contained type".
GitHub 164: "Compile error when using pmr::map with a std::pair; works when using a std::tuple".
GitHub 171: "deque::clear() uses undefined behaviour".

Add implicit conversion between compatible reference wrappers.
Add boost/core/cmath.hpp, a portable implementation of the floating point classification functions from <cmath>.
Add boost/core/bit.hpp, a portable implementation of the C++20 standard header <bit>.
Fix BOOST_TEST_EQ, BOOST_TEST_NE for character types under C++20.
Revise allocator access utilities (now support VS2013, and no workarounds use allocator_traits.)

BREAKING CHANGE: boost::dll::import was renamed to boost::dll::import_symbol to avoid collision with C++20 import keyword.
Updated docs, including FAQ section.

Updated compatibility with WASI platform.
Fixed an exception being thrown by path::remove_filename if the path is "////".
Fixed create_directories disregarding errors from file status query operations issued internally. This could result in incorrect error codes returned by create_directories.
BREAKING: In next release, we are going to drop support for GCC 5. We will also change the required minimum C++ version from C++11 to C++14.

Reduced compile-time dependencies:
linear_slist_algorithms use a simple node_ptr instead of std::pair on return.
list/slist use operator </operator == instead of std::equal_to/std::less.
Fixed GitHub 54: set.rbegin() looks like O(log(N))

Added wchar_t API support for named resources in operating systems that offer native wide character API (e.g. Windows). The following classes were updated with wchar_t name support:
Added BOOST_INTERPROCESS_FORCE_NATIVE_EMULATION macro option to disable the use of generic emulation code for process shared synchronization primitives instead of native POSIX or Winapi functions.
Fixed bugs:
GitHub 76 ("Cygwin compilation errors").
GitHub 92 ("bufferstream: Correct MSVC compilation warning").
GitHub 106 ("Use fallocate on truncate_file").
GitHub 120 ("segment_manager customization").
GitHub 122 ("Mark constructors/assignment/swap noexcept where possible").
GitHub 126 ("_ReadWriteBarrier is deprecated warning when compiling with clang-cl.exe").

Security Report from Bishop Fox.
Refactored value_from implementation; user customizations are now always preferred over library-provided overloads.
Fix imprecise parsing for some floating point numbers.
Fix link errors in standalone mode, when used alongside Boost.
Fix Boost.Build builds on GCC 4.8.

Dropped dependency on Boost.Math
Fixes for the CI and coverage
Bug fixes:
Corrected a formal race condition in the thread-safe log record queue implementation used in the unbounded_fifo_queue policy of the asynchronous_sink frontend. The race could be detected by TSAN, but it was not a real problem on most current CPU architectures and compilers.
When copying a logger with a channel attribute (e.g. channel_logger), the channel attribute is now deep-copied from the original logger. This means that modifying the channel in the new logger will no longer affect the original logger.
Replaced the use of std::allocator<void> in template parameters with a new tag type boost::log::use_std_allocator to silence libc++ warnings about the former being deprecated in C++17 and later. The tag indicates that the instantiated template should be using a specialization of std::allocator internally to allocate dynamic memory, so the change has no functional effect.
Boost.Log no longer defines __MSVCRT_VERSION__ macro on MinGW and MinGW-w64. Defining this macro caused incompatibility with UCRT, which is available as an option in recent MinGW-w64.
See changelog for more details.

Breaking Change: C++03 support is now removed, a C++11 or later conformant compiler is now required to use this library.
Added Z-test.
Added execution policy support to univariate and bivariate statistics: enables parallel execution (requires C++17 and <execution>).
Big update/improvement on CI testing.
Bivariate statistics now have integer support.
T-Test now has integer support.
Linear regression now has integer support.
Correct PDF of the beta distribution at the endpoints.
Correct use of Stirling's approximation in certain multiprecision cases.
Eliminate -Wimplicit-int-float-conversion on clang.
Fix some constexpr issues in quaternion/octonion.
Minor performance fix to tanh_sinh integration.
Update hypergeometric functions internal scaling to allow for 64-bit (long long) exponents with multiprecision types.

Git Issue 35: "New nothrow move traits are incomplete".

BREAKING CHANGE: Massive refactoring and code simplification makes C++11 an absolute requirement.
Use BOOST_TRY/CATCH in headers so code can be used in exception-free environments.
Correct corner case in pow.
Correct exception type thrown to match docs in lsb/msb.
Allow moves and operators between related but different types (ie types with the same allocator).

Fix discarding of characters for text file streams when seek or sync functions are used and newlines were converted (e.g. on Windows)
Fix potential use-after-free bug when reusing (via open) a file stream that has been closed
Fix potential invalid memory access when using a file stream that has been moved or swapped to where the source had a put-back character or was set to unbuffered mode
Fix compatibility with ucrt runtime by not defining __MSVCRT_VERSION__
Known issues: Read performance for text files is degraded. Binary files and writing is unaffected.

Fixed MSVC warning C4702.

BREAKING CHANGE: After a year and three major Boost releases announcing this upcoming change, this is the FIRST RELEASE of the v2.2 branch. This branch has a number of major breaking changes to the Outcome v2.1 which shipped in Boost 1.75 and earlier, see the documentation for details.
VS2019.8 changed how to enable Coroutines, which caused Outcome to not compile on that compiler.
If on C++ 20, we now use C++ 20 [[likely]] instead of compiler-specific markup to indicate when TRY has likely success or failure.
BREAKING CHANGE: Previously the value of spare_storage(const basic_result|basic_outcome *) noexcept was not propagated over BOOST_OUTCOME_TRY, which causes things like stack backtraces captured at the point of construction of an errored result to get dropped at every TRY point. This has been fixed by adding an optional spare_storage to success_type<T> and failure_type<T>, as well as to auto success(T &&, ...) and auto failure(T &&, ...).
Bug fixes:
Boost.Outcome should now compile with BOOST_NO_EXCEPTIONS defined. Thanks to Emil, maintainer of Boost.Exception, making a change for me, Boost.Outcome should now compile with C++ exceptions globally disabled. You won't be able to use boost::exception_ptr as it can't be included if C++ exceptions are globally disabled.
BREAKING CHANGE 244 It came as a shock to learn that BOOST_OUTCOME_TRY had been broken since the inception of this library for certain corner case code, which required a breaking change in how TRY works. See the changelog in the documentation for more detail.

Added a workaround for MSVC 2015 code miscompilation when an rvalue was used as a default value of a named parameter of a function.

Fixed reflection of types with missing const in SFINAE expressions in template constructor. Now reflection of aggregates with std::optional<std::chrono::duration<???>> fields works on any Standard Library implementation, even if LWG3050 is not fixed.
Comparison functions are now constexpr
Fixed numerous typos in docs

Worked around GCC bug affecting GCC versions 9.3-10.2.

Version 1.13
Add ARCH_PPC_64 predef.
Fix ARCH_WORD_BITS* redefinition warnings/errors.
Add ARCH_E2K, Elbrus 2000, architecture from Konstantin Ivlev.
Fix not handling recent C++ version that go above 10.x version.
Version 1.12
Switch to using the endian.h header on OpenBSD. (Brad Smith)
Fix not handling recent versions of stdcxx that go above version 9.
Fix including sub-BSD OS headers directly causing redef warnings.
Add CI testing of direct inclusion of all headers.
Add CI testing on FreeBSD for clang and gcc.
Add WORD_BITS set of predefs to detect the architecture word size. Initial implementation inspired by submission from Mikhail Komarov.
Add CI testing for Cygwin 32 and 64.

Property Tree has a new maintainer.
Fix usage of deprecated Boost.Bind features.
Link to Wikipedia fixed.
Use BOOST_OVERRIDE to fix GCC warnings.
Add extensive CI testing.

Regex is now header only except in C++03 mode.
Support for C++03 is now deprecated.
The library can now be used "standalone" without the rest of Boost being present.

Better support for pre-C++11 builds on clang.
Bigger warning for do not use boost::stacktrace::stacktrace in signal handlers.

Fix for Visual Studio managed code projects.

Improved generated code for the double buffered case.

Updated Tools
Includes release of B2 version 4.4.1.

Revision 1.18 / (download) - annotate - [select for diffs], Fri Jan 1 08:19:02 2021 UTC (3 years, 2 months ago) by ryoon
Branch: MAIN
CVS Tags: pkgsrc-2021Q1-base, pkgsrc-2021Q1
Changes since 1.17: +3 -3 lines
Diff to previous 1.17 (colored)

boost: Update to 1.75.0

New Libraries

  * JSON: JSON parsing, serialization, and DOM in C++11, from Vinnie Falco and
    Krystian Stasiowski.
      + Fast compilation requiring only C++11
      + Easy and safe modern API with allocator support
      + Compile without Boost, define BOOST_JSON_STANDALONE
      + Optional header-only, without linking to a library
  * LEAF: A lightweight error-handling library for C++11, from Emil Dotchevski.
      + Small single-header format, no dependencies.
      + Designed for maximum efficiency ("happy" path and "sad" path).
      + No dynamic memory allocations, even with heavy payloads.
      + O(1) transport of arbitrary error types (independent of call stack
      + Can be used with or without exception handling.
  * PFR: Basic reflection without macro or boilerplate code for user defined
    types, from Antony Polukhin.

Updated Libraries

  * Asio:
      + Enabled support for UNIX domain sockets on Windows.
      + Added executor-converting construction and assignment to ip::
      + Added compatibility between polymorphic executors and the (deprecated)
        handler invocation hook.
      + Added the experimental::as_single completion token adapter.
      + Added support for MSG_NOSIGNAL on more platforms by using
        _POSIX_VERSION to detect whether it is supported.
      + Added the ability to compile using libpthread on Windows.
      + Added workarounds for the Intel C++ compiler.
      + Added more support for detecting and optimising for handlers that have
        no custom executor.
      + Reduced lock contention for timer cancellation on Windows.
      + Reinstated a previously removed null-pointer check, as it had a
        measurable impact on performance.
      + Fixed the executor concept to test for a const-qualified execute().
      + Fixed any_executor support for builds without RTTI support.
      + Fixed the thread_pool unit test to work without RTTI support.
      + Fixed C++20 coroutines compatibility with clang on Windows.
      + Fixed some compatibility issues with Windows Runtime.
      + Fixed shadow name warnings caused by addition of asio::query.
      + Fixed a "logical rof equal expressions" warning on linux.
      + Fixed a benign switch fallthrough warning.
      + Added missing push/pop_options.hpp includes.
      + Suppressed zero-as-null-pointer-constant warnings.
      + Fixed a comma-operator warning.
      + Updated the documentation to clarify when the select reactor is used on
      + Fixed potential ambiguity caused by any_executor comparisons and
      + Added detection of non-experimental C++20 coroutines on MSVC 19.8.
      + Fixed compatibility with uClibc.
      + Fixed strand<> adaptation of Networking TS executors when targeting
        older C++ versions or less conformant compilers.
      + Consult the Revision History for further details.
  * Atomic:
      + Implemented SSE2 and SSE4.1 versions of address lookup algorithm, which
        is used in the internal lock pool implementation. This may improve
        performance of waiting and notifying operations in heavily contended
      + Fixed a possible compilation error on AArch64 targets caused by
        incorrect instructions generated for bitwise (logical) operations with
        immediate constants. (#41)
  * Beast:
      + This update brings bug fixes and support for the
        BOOST_ASIO_ENBALE_HANDLER_TRACKING compile flag from Boost.Asio:
      + We'd love to know how you or your company use Beast, consider adding an
        entry to the Companies and Individuals Using Beast list.
      + See the full Release Notes for a complete list of changes.
  * Container:
      + New devector container.
      + Fixed bugs/issues:
          o #152 Tree-based containers have troubles with move-only types.
          o #156 Compile error with vector.
          o PR#157 Add missing include.
          o #159: pmr::monotonic_buffer_resource crashes on large single
          o #160: Usage of uses_allocator needs a remove_cvref_t.
          o #162: small_vector on MSVC x86 call-by-value crash.
          o #161: polymorphic_allocator(memory_resource*) non-standard
            extension causes headache.
          o PR#163: container_rebind for small_vector with options.
          o #165: Link error with shared library and memory_resource inline
          o PR#166: Fix encoding error in copyright headers.
          o PR#167: error: the address of 'msg' will always evaluate as 'true'
            warning with GCC 4.4.
          o #169: flood of warnings building dlmalloc_ext_2_8_6.c on clang11.
  * Endian:
      + endian_arithmetic no longer inherits from endian_buffer
      + When BOOST_ENDIAN_NO_CTORS is defined, the unaligned endian_buffer and
        endian_arithmetic are C++03 PODs, to enable use of __attribute__((
  * Filesystem:
      + New: Added creation_time operation, which allows to obtain file
        creation time. (Inspired by PR#134)
      + The returned value of last_write_time(p, ec) operation in case of
        failure has been changed to a minimal value representable by std::
        time_t instead of -1.
      + The returned value of hard_link_count(p, ec) operation in case of
        failure has been changed to static_cast<uintmax_t>(-1) instead of 0.
      + On POSIX systems, file_size will now indicate error code errc::
        function_not_supported if the path resolves to a non-regular file.
        Previously, errc::operation_not_permitted was reported.
      + On Linux, many operations now use statx system call internally, when
        possible, which allows to reduce the amount of information queried from
        the filesystem and potentially improve performance. The statx system
        call was introduced in Linux kernel 4.11.
      + Removed const-qualification from return types of some path methods.
        This could prevent move construction and move assignment at the call
        site in some cases. (#160)
      + On OpenBSD 4.4 and newer, use statvfs system call to obtain filesystem
        space information. (Inspired by PR#162)
      + On Windows, space now returns with an error if the provided path does
        not idendify an existing file. (#167)
  * GIL:
      + BREAKING: In next release, we are going to drop support for GCC 5. We
        may also change the required minimum C++ version from C++11 to C++14.
  * Histogram:
      + This update brings
          o Bug-fixes for corner-cases
          o Small documentation improvements
          o Fixes for new warnings from latest compilers and when compiling
            against the C++20 standard
      + See the full Release Notes for a complete list of changes.
  * Interprocess:
      + Fixed bugs:
          o #127: static assertion failure with boost interprocess 1.74 and
  * Intrusive:
      + Fixed bugs:
          o PR#48: MSVC "assignment within conditional" warning fix.
          o PR#49: Fix empty control statement warnings.
          o #52: Invalid casting in BOOST_INTRUSIVE_BSR_INTRINSIC.
  * Log:
      + Bug fixes:
          o Corrected the file counter that would be used in text_file_backend
            when generating the target file name (based on the pattern set by
            set_target_file_name_pattern method) when the log file is rotated.
          o Replaced a volatile version counter in basic_sink_frontend with an
            atomic. (#128)
          o In the asynchronous_sink frontend, resolved a possible conflict
            between flush and run methods, if run is called from a user's
            thread instead of the internal dedicated thread spawned by the
            frontend. (#131)
      + See changelog for more details.
  * Move:
      + Fixed bugs:
          o #30: (void) C-cast is a non-portable way of suppressing compiler
  * Mp11:
      + Added mp_pairwise_fold (suggested by Barry Revzin)
      + Removed mp_invoke (use mp_invoke_q)
  * Optional:
      + boost::none is constexpr-declared.
      + Fixed issue #78.
  * Outcome:
      + Announcements:
          o After a year and three major Boost releases announcing this
            upcoming change, this is the FINAL RELEASE of the v2.1 branch. From
            Boost 1.76 onwards, the v2.2 branch becomes the default. This
            branch has a number of major breaking changes to Outcome v2.1, see
            the documentation for details.
      + Enhancements:
          o The ADL discovered event hooks have been replaced with
            policy-specified event hooks instead. This is due to brittleness
            (where hooks would quietly self-disable if somebody changed
            something), compiler bugs (a difference in compiler settings causes
            the wrong hooks, or some but not all hooks, to get discovered), and
            end user difficulty in using them at all. The policy-specified
            event hooks can be told to default to ADL discovered hooks for
            backwards compatibility: set OUTCOME_ENABLE_LEGACY_SUPPORT_FOR to
            less than 220 to enable emulation.
          o Improve configuring OUTCOME_GCC6_CONCEPT_BOOL. Older GCCs had
            boolean based concepts syntax, whereas newer GCCs are standards
            conforming. However the precise logic of when to use legacy and
            conforming syntax was not well understood, which caused Outcome to
            fail to compile depending on what options you pass to GCC. The new
            logic always uses the legacy syntax if on GCC 8 or older, otherwise
            we use conforming syntax if and only if GCC is in C++ 20 mode or
            later. This hopefully will resolve the corner case build failures
            on GCC.
      + Bug fixes:
          o Boost.Outcome should now compile with BOOST_NO_EXCEPTIONS defined.
            Thanks to Emil, maintainer of Boost.Exception, making a change for
            me, Boost.Outcome should now compile with C++ exceptions globally
            disabled. You won't be able to use boost::exception_ptr as it can't
            be included if C++ exceptions are globally disabled.
          o #236 In the Coroutine support the final_suspend() was not noexcept,
            despite being required to be so in the C++ 20 standard. This has
            been fixed, but only if your compiler implements noop_coroutine.
            Additionally, if noop_coroutine is available, we use the much more
            efficient coroutine handle returning variant of await_suspend()
            which should significantly improve codegen and context switching
  * Polygon:
      + C++20 fixes for event_comparison_type, vertex_equality_predicate_type,
        and voronoi_predicates. (Glen Fernandes)
  * Preprocessor:
      + When variadic data is empty in C++20 mode with __VA_OPT__ support the
        variadic size has been corrected to be 0. This also means that in this
        C++20 mode it is now valid to convert to and from empty arrays and
        lists and variadic data. The end-user can read the "C++20 Support For
        Variadic Macros" part of the "variadic macros" topic for more
        information about empty variadic data in the library.
      + The macro BOOST_PP_IS_STANDARD() has been added for identifying if the
        currently used preprocessor is a C++ standard conforming preprocessor.
        A number of preprocessors which generally work correctly with the
        library but need various internal workarounds, including the currently
        default VC++ preprocessor, are not considered C++ standard conforming
        preprocessors. However most preprocessors, including among others gcc,
        clang, and the new but currently non-default VC++ preprocessor in
        VS2019, are C++ standard conforming preprocessors.
      + For C++ standard conforming preprocessors a number of the limits
        defined in the config/limits.hpp can now be changed to higher amounts
        for a TU. The end-user should read the "limitations" topic to
        understand how and which limits can be changed.
      + For C++ standard conforming preprocessors, in order to allow the
        maximum number of FOR and WHILE iterations, the beginning 'r' and 'd'
        iteration numbers in the user-defined macros start at 1 and not 2, as
        it did in previous releases. This could be a breaking change if these
        iteration numbers are used in the user-defined macros ( they probably
        would not be ), but the change was necessary to fix some arcane bugs
        when dealing with numerical/logical operations with maximum numbers as
        well to allow the user-defined macros to be called the correct possible
        maximum number of times. For non-C++ conforming preprocessors, this
        change was not made because those non-conforming C++ preprocessors
        generally have limitations which disallow the maximum number of looping
        constructs to be run, and it was felt not to introduce a possible
        breaking change to those more fragile preprocessors would be better. It
        was also felt that besides fixing some arcane preprocessor bugs and
        providing the possible maximum number of user-defined macro
        invocations, this change could be made because it has never been
        documented what the starting 'r' and 'd' iteration numbers actually are
        but only that these numbers are incremented for each iteration.
      + The library has been upgraded to assume variadic macro support for any
        compiler working with the library. Ostensibly this means that the
        library is now a C++11 on up library, yet most of the major compilers,
        including gcc, clang, and VC++, also support variadic macros in C++98/
        C++03 mode as long as strict compliance to C++98/C++03 is not turned on
        when using one of those compilers.
  * Rational:
      + Fix Rational operators to not break under new C++20 operator==
        rewriting rules. (Glen Fernandes)
  * Signals2:
      + Correct C++ allocator model support to fix compilation in C++20
        standards mode. (Glen Fernandes)
  * System:
      + The platform-specific headers windows_error.hpp, linux_error.hpp, and
        cygwin_error.hpp emit deprecation messages and are slated for removal.
      + The old names for generic_category() and system_category() emit
        deprecation messages and are slated for removal.
      + error_condition::failed is deprecated and is slated for removal.
        operator bool() for error_condition has been reverted to its old
        meaning of value() != 0. This is done for compatibility with std::
        error_condition as the next release is expected to improve
        interoperability with <system_error> even further. Note that this does
        not affect error_code::failed, which is still alive and well.
      + The overload of error_condition::message that takes a buffer is
        deprecated and is slated for removal, for the same reasons. Note that
        this does not affect error_code::message.
  * uBLAS:
      + Correct C++ allocator model support to fix compilation in C++20
        standards mode. (Glen Fernandes and Conrad Poelman)
  * VMD:
      + The VMD number parsing has been upgraded to support the ability for the
        end-user to change the number limits in the Preprocessor library.
      + The macro BOOST_VMD_IS_GENERAL_IDENTIFIER has been added to support the
        parsing of input that represents a preprocessor token which matches the
        VMD identifier syntax, without having to register the identifier as a
        specific identifier.
  * Wave:
      + Added new C++20 tokens, including the spaceship operator <=>
      + Fixed bugs:
          o #94: fix incorrect behavior of __LINE__ and __FILE__ under

New Libraries

  * STLInterfaces: A library of CRTP bases to ease the writing of STL views,
    iterators, and sequence containers, from Zach Laine.

Updated Libraries

  * Asio:
      + Added an implementation of the proposed standard executors (P0443r13,
        P1348r0, and P1393r0).
      + Added support for the proposed standard executors to Asio's I/O
          o The supplied executors now meet the requirements for the proposed
            standard executors. These classes also continue to meet the
            existing requirements for the Networking TS model of executors.
          o All I/O objects, asynchronous operations, and utilities will
            interoperate with both new proposed standard executors, and with
            existing Networking TS executors.
          o The any_io_executor type alias has been introduced as the default
            runtime-polymorphic executor for all I/O objects. This defaults to
            the execution::any_executor<> template. If required for backward
            compatibility, BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT can be defined
            to use the old asio::executor polymorphic wrapper instead.
          o Support for the existing Networking TS model of executors can be
            disabled by defining BOOST_ASIO_NO_TS_EXECUTORS.
      + Added converting move construction and assignment to
      + Enabled C++20 coroutine support when using gcc 10.
      + Added overloads of co_spawn that launch an awaitable.
      + Added a new constructor overload to use_awaitable_t's default executor
        adapter, to enable conversion between executor types.
      + Added support for using detached_t as a default completion token, by
        adding members as_default_on() and as_default_on_t<>.
      + Added a move constructor to ssl::stream<>.
      + Changed ssl::stream<> write operations to linearise gather-write buffer
      + Added compile-time detection of the deprecated asio_handler_invoke,
        asio_handler_allocate, and asio_handler_deallocate hooks, when
        BOOST_ASIO_NO_DEPRECATED is defined.
      + Implemented a number of performance optimisations.
      + Added source location support to handler tracking.
      + Implemented various improvements to the tool.
      + Added the tool, which processes handler tracking output
        to produce a list of "live" handlers.
      + Added the tool, which filters handler tracking output to
        include only those events in the tree that produced the nominated
      + Added changes for clang-based Embarcadero C++ compilers.
      + Fixed a deadlock that can occur when multiple threads concurrently
        initialise the Windows I/O completion port backend.
      + Fixed async_compose to work with copyable handlers when passed by
      + Fixed completion signature deduction in co_spawn.
      + Removed a spurious Executor base class from the executor_binder
      + Various fixes and improvements in the documentation and examples.
      + Consult the Revision History for further details.
  * Atomic:
      + Added missing const qualifiers to some operations in atomic_ref.
      + Added support for yield instruction on ARMv8-A. The instruction is used
        internally in spin loops to reduce CPU power consumption.
      + Added support for C++20 waiting and notifying operations. The
        implementation includes generic backend that involves the internal lock
        pool, as well as specialized backends for Windows, Linux, FreeBSD,
        DragonFly BSD and NetBSD. Atomic types provide a new method
        has_native_wait_notify, a static boolean constant
        always_has_native_wait_notify and a set of capability macros that allow
        to detect if the implementation supports native waiting and notifying
        operations for a given type.
      + Changed internal representation of atomic_flag to use 32-bit storage.
        This allows for more efficient waiting and notifying operations on
        atomic_flag on some platforms.
      + Added support for build-time configuration of the internal lock pool
        size. The user can define the BOOST_ATOMIC_LOCK_POOL_SIZE_LOG2 macro to
        specify binary logarithm of the size of the lock pool. The default
        value is 8, meaning that the size of the lock pool is 256, up from 64
        used in the previous release.
      + Added support for a new set of atomic types dedicated for inter-process
        communication: ipc_atomic_flag, ipc_atomic and ipc_atomic_ref. Users
        are recommended to port their code using non-IPC types for
        inter-process communication to the new types. The new types provide the
        same set of operations as their non-IPC counterparts, with the
        following differences:
          o Most operations have an added precondition that is_lock_free
            returns true for the given atomic object. The library will issue a
            compile time error if this precondition is known to be not
            satisfied at compile time.
          o All provided operations are address-free, meaning that the atomic
            object (in case of ipc_atomic_ref - the referenced object) may be
            located in process-shared memory or mapped into the same process at
            multiple different addresses.
          o The new has_native_wait_notify operation and
            always_has_native_wait_notify constant indicate support for native
            inter-process waiting and notifying operations. When that support
            is not present, the operations are implemented with a busy loop,
            which is less efficient, but still is address-free. A separate set
            of capability macros is also provided to indicate this support.
      + Added new atomic_unsigned_lock_free and atomic_signed_lock_free types
        introduced in C++20. The types indicate the atomic object type for an
        unsigned or signed integer, respectively, that is lock-free and
        preferably has native support for waiting and notifying operations.
      + Added new gcc assembler backends for ARMv8-A (for both AArch32 and
        AArch64). The new backends are used to implement operations not
        supported by compiler intrinsics (including 128-bit operations on
        AArch64) and can also be used when compiler intrinsics are not
        available. Both little and big endian targets are supported. AArch64
        backend supports extensions defined in ARMv8.1 and ARMv8.3.
      + Added support for big endian targets in the legacy ARM backend based on
        gcc assembler blocks (this backend is used on ARMv7 and older targets).
        Previously, the backend assumed little endian memory layout, which is
        significant for 64-bit operations.
      + Improved performance of seq_cst stores and thread fences on x86 by
        using lock-prefixed instructions instead of mfence. This means that the
        operations no longer affect non-temporal stores, which was also not
        guaranteed before. Use specialized instructions and intrinsics to order
        non-temporal memory accesses.
      + Fixed capability macros for 80-bit long double on x86 targets not
        indicating lock-free operations even if 128-bit atomic operations were
      + Fixed compilation of gcc asm blocks on Alpha targets.
      + In the gcc __sync* intrinsics backend, fixed that store and load
        operations of large objects (larger than a pointer size) could be
        non-atomic. The implementation currently assumes that small objects can
        be stored with a single instruction atomically on all modern
  * Beast:
      + This update brings bug fixes and support for the following changes
        changes in Boost.Asio:
      + Beast supports BOOST_ASIO_NO_DEPRECATED. Define this to help identify
        areas of your Beast and Asio code which use deprecated Asio interfaces.
      + Beast also supports BOOST_ASIO_NO_TS_EXECUTORS. Define this to identify
        uses of executors from the now potentially outdated Networking TS
      + Asio will use the Standard Executors model by default. You can prevent
        this behaviour by defining BOOST_ASIO_USE_TS_EXECUTOR_AS_DEFAULT in
        which the Networking TS model will be used by default. Setting this
        flag does not prevent a program from using executors from the Standard
        Executors model explicitly.
      + We'd love to know how you or your company use Beast, consider adding an
        entry to the Companies and Individuals Using Beast list.
      + See the full Release Notes for a complete list of changes.
  * Bimap:
      + Correct allocator usage (fixes C++20 compilation). (Glen Fernandes)
  * Config:
      + Implement BOOST_NO_CXX11_OVERRIDE and BOOST_OVERRIDE. (Glen Fernandes)
  * Core:
      + Implemented the allocator access utilities which provide a replacement
        for allocator_traits with individual traits and functions for each
        facility. They support the C++11 allocator model when possible and
        provide a fallback for C++98 compatibility. These are now used in
        Circular_Buffer, Wave, Lockfree, Heap, Smart_Ptr, Dynamic_Bitset,
        Format, Bimap and more. (Glen Fernandes)
  * DLL:
      + Multiple fixes for the library_info work on empty shared objects.
      + Compilation fixes for C++98 and C++11 modes (#28).
      + Fixes for smart_library manglings (thanks to XiaLiChao82 #37).
  * Endian:
      + Enabled scoped enumeration types in endian_reverse.
      + Enabled bool, enum, float, double in endian_reverse_inplace.
      + Added an overload of endian_reverse_inplace for arrays.
  * Filesystem:
      + Removed compile-time checks for support for symlinks and hardlink on
        Windows. Instead, a runtime check is used. (PR#142)
      + Fixed handling of reparse points in canonical and read_symlink on
        Windows. This also affects other algorithms that involve canonical and
        read_symlink in their implementation. (PR#100, #85, #99, #123, #125)
      + Fixed that read_symlink on Windows could potentially fail or cause
        failures elsewhere with a sharing violation error, if the same symlink
        was opened concurrently. (#138)
      + Fixed that is_symlink(directory_entry) would always return false, even
        if the directory entry actually referred to a symlink. (PR#148)
      + Added missing status inspection operation overloads for directory_entry
        and error_code (e.g. is_directory(directory_entry, error_code&)).
        Removed incorrect noexcept specifications for the overloads not taking
        the error_code arguments.
      + copy_file implementation has been updated to perform checks on the
        source and target files, as required by C++20 ([fs.op.copy.file]/4.1).
        In particular, the operation will fail if the source or target file is
        not a regular file or the source and target paths identify the same
      + copy_file on POSIX systems will now also copy the source file
        permissions to the target file, if the target file is overwritten.
      + New: Added copy_file implementations based on sendfile and
        copy_file_range system calls on Linux, which may improve file copying
        performance, especially on network filesystems.
      + Deprecated: The copy_option enumeration that is used with the copy_file
        operation is deprecated. As a replacement, the new enum copy_options
        (note the trailing 's') has been added. The new enum contains values
        similar to the copy_options enum from C++20. The old enum values are
        mapped onto the new enum. The old enum will be removed in a future
      + New: Added copy_options::skip_existing option, which allows copy_file
        operation to succeed without overwriting the target file, if it exists.
      + New: Added copy_options::update_existing option, which allows copy_file
        operation to conditionally overwrite the target file, if it exists, if
        its last write time is older than that of the replacement file.
      + New: copy_file now returns bool, which indicates whether the file was
      + New, breaking change: copy operation has been extended and reworked to
        implement behavior specified in C++20 [fs.op.copy]. This includes
        support for copy_options::recursive, copy_options::copy_symlinks,
        copy_options::skip_symlinks, copy_options::directories_only,
        copy_options::create_symlinks and copy_options::create_hard_links
        options. The operation performs additional checks based on the
        specified options. Applying copy to a directory with default
        copy_options will now also copy files residing in that directory (but
        not nested directories or files in those directories).
      + New: Added create_directory overload taking two paths. The second path
        is a path to an existing directory, which is used as a source of
        permission attributes to use in the directory to create.
      + Deprecated: copy_directory operation has been deprecated in favor of
        the new create_directory overload. Note that the two operations have
        reversed order of the path arguments.
      + equivalent on POSIX systems now returns the actual error code from the
        OS if one of the paths does not resolve to a file. Previously the
        function would return an error code of 1. (#141)
      + equivalent no longer considers file size and last modification time in
        order to test whether the two paths refer to the same file. These
        checks could result in a false negative if the file was modified during
        the equivalent call.
      + New: Added absolute overloads taking error_code argument.
      + Operations that have current_path() as the default value of their
        arguments and also have an error_code argument will use the
        current_path(error_code& ec) overload to obtain the current path, so
        that its failure is reported via the error_code argument instead of an
      + space now initializes the space_info structure members to -1 values on
        error, as required by C++20 ([]/1).
      + space on Windows now accepts paths referring to arbitrary files, not
        only directories. This is similar to POSIX systems and corresponds to
        the operation description in C++20. (#73)
      + New: Added implementation of temp_directory_path for Windows CE. (PR#25
      + New: Improved compatibility with WASI platform. (PR#144)
      + New: Improved support for Embarcadero compilers. (PR#130)
      + New: Added implementations of unique_path operation based on getrandom
        (Linux), arc4random_buf (OpenBSD/FreeBSD/CloudABI) and BCrypt (Windows)
        system APIs.
      + Deprecated: Auto-linking against system libraries on Windows with
        MSVC-compatible compilers is deprecated and will be removed in a future
        release. This affects users linking against static library of
        Boost.Filesystem. Users are advised to update their project build
        systems to either use a shared library of Boost.Filesystem, or
        explicitly specify the dependencies of Boost.Filesystem in the linker
        command line. Users of shared library of Boost.Filesystem are not
  * Flyweight:
      + Maintenance work.
  * Format:
      + Correct allocator usage (fixes C++20 compilation). (Glen Fernandes)
  * Geometry:
      + Improvements
          o PR#720 Additional R-tree constructors (thanks to Caian Benedicto).
          o Various improvements in buffer, set and relational operations.
      + Solved issues
          o #709 memcpy called for object with no trivial copy-assignment.
          o #721 Compilation error in bgi::detail::rtree::visitors::insert.
          o #727 MSVC warning: conditional expression is constant.
      + Bugfixes
          o PR#700 Missing cases for default strategies in distance algorithm.
          o PR#738 Longitudes out of range in direct geodesic formulas.
  * GIL:
      + Added
          o Added new constructor initializing any_image from r-value reference
            to any image (PR#486).
          o Implemented mechanism to reverse kernel_2d (PR#489).
      + Changed
          o BREAKING: Replace Boost.Variant with Boost.Variant2 (PR#474) which
            completes removal on uses of Boost.MPL (missing from Boost 1.72.0
            change added PR#274).
          o Use perfect forwarding from apply_operation to visit (PR#491).
      + Removed
          o BREAKING: Removed dependency on Boost.Variant
      + Fixed
          o Fixed invalid conversion from RGB8 to CMYK32 due to overflow (PR#
          o Fixed image constructor from other image (PR#477).
          o Fixed error plane_view_t is not a class or namespace name (PR#481).
          o Fixed interleaved_view factory using point<std::ptrdiff_t> for
            dimension (PR#487).
          o Fixed documentation replacing uses MPL with MP11 in tutorial (PR#
          o Fixed missing header in numeric/kernel.hpp to make it
            self-contained (PR#502).
      + Acknowledgements
          o Samuel Debionne, Pranam Lashkari, Mateusz Loskot, Debabrata Mandal
  * Heap:
      + Correct destruction of top node in skew_heap. (Glen Fernandes)
      + Correct and simplify allocator use. (Glen Fernandes)
  * Integer:
      + Fixed compilation of gcd in C++20 mode with clang 10.
      + Improved support for Embarcadero compilers. (PR#21)
  * Iterator:
      + boost/function_output_iterator.hpp header is now deprecated. Users
        should replace its inclusion with boost/iterator/
        function_output_iterator.hpp. (PR#51)
      + Improved support for Embarcadero compilers. (PR#55)
  * LexicalCast:
      + Fixed warnings on missing override (thanks to EugeneZelenko #35, #34).
      + Fixes for the the Embarcadero compilers (thanks to Edward Diener).
  * Log:
      + Bug fixes:
          o The syslog sink backend now verifies the IP version of the local
            and target addresses set by user. The addresses must have the same
            IP version as was specified in the ip_version named parameter on
            the sink backend construction (by default, IPv4 is assumed). When
            an address is obtained as a result of host name resolution, only
            addresses with matching IP version are considered. (#119)
      + New Features:
          o Move constructors and assignment operators of various components
            were marked noexcept.
          o Added a new range_manip stream manipulator that can be used for
            outputting elements of a range, optionally separated by a
          o Added a new tuple_manip stream manipulator that can be used for
            outputting elements of a tuple or any other heterogeneous sequence,
            optionally separated by a delimiter.
          o Added a new optional_manip stream manipulator that can be used for
            outputting optionally present values.
      + See changelog for more details.
  * Mp11:
      + Improved compilation performance of mp_with_index<N> for large N.
      + Added tuple_transform (contributed by Hans Dembinski.)
  * Multi-index Containers:
      + Added node extraction and insertion following the analogous interface
        of associative containers as introduced in C++17. This feature has also
        been extended to non key-based indices, in contrast to C++ standard
        library sequence containers, which do not provide such functionality.
      + Clarified documentation on read/write key extractors (issue #32).
      + Maintenance work.
  * Nowide:
      + The library now requires a C++11-compliant compiler and stdlib
      + LFS: Add support for files > 2 GB where the underlying system supports
      + Generic UTF conversion functions are now available in the boost::nowide
        ::utf namespace
      + Add support for stat with UTF-8 paths
  * Outcome:
      + Announcements:
          o The v2.1 branch is expected to be retired end of 2020, with the
            v2.2 branch becoming the default. You can use the future v2.2
            branch now using better_optimisation. This branch has a number of
            major breaking changes to Outcome v2.1, see the front page for
      + Enhancements:
          o BREAKING CHANGE void results and outcomes no longer default
            construct types during explicit construction. Previously if you
            explicitly constructed a result<T> from a non-errored result<void>,
            it default constructed T. This was found to cause unhelpful
            surprise, so it has been disabled.
          o New macro OUTCOME_ENABLE_LEGACY_SUPPORT_FOR. The macro
            OUTCOME_ENABLE_LEGACY_SUPPORT_FOR can be used to enable aliasing of
            older naming and features to newer naming and features when using a
            newer version of Outcome.
          o Concepts now have snake case style naming instead of camel case
            style. When Outcome was first implemented, it was thought that C++
            20 concepts were going to have camel case style. This was changed
            before the C++ 20 release, and Outcome's concepts have been renamed
            similarly. This won't break any code in Outcome v2.1, as
            compatibility aliases are provided. However code compiled against
            Outcome v2.2 will need to be upgraded, unless
            OUTCOME_ENABLE_LEGACY_SUPPORT_FOR is set to 210 or lower.
          o Concepts now live in OUTCOME_V2_NAMESPACE::concepts namespace.
            Previously concepts lived in the convert namespace, now they live
            in their own namespace.
          o New concepts basic_result<T> and basic_outcome<T> added. End users
            were finding an unhelpful gap in between is_basic_result<T> and
            value_or_error<T> where they wanted a concept that matched types
            which were basic_result, but not exactly one of those. Concepts
            filling that gap were added.
          o Operation TRY works differently from Outcome v2.2 onwards. This is
            a severely code breaking change which change the syntax of how one
            uses OUTCOME_TRY(). A regular expression suitable for upgrading
            code can be found in the list of changes between Outcome v2.1 and
      + Bug fixes:
          o #224 The clang Apple ships in Xcode 11.4 (currently the latest) has
            not been patched with the fixes to LLVM clang that fix noexcept(std
            ::is_constructible<T, void>) failing to compile which I originally
            submitted years ago. So give up waiting on Apple to fix their
            clang, add a workaround to Outcome.
          o Spare storage could not be used from within no-value policy
            classes. Due to an obvious brain fart when writing the code at the
            time, the spare storage APIs had the wrong prototype which
            prevented them working from within policy classes. Sorry.
  * PolyCollection:
      + Fixed internal ambiguity problem between boost::type_erasure::any and
        boost::any (issue #17).
      + Maintenance work.
  * SmartPtr:
      + Added owner_equals to shared_ptr, weak_ptr, local_shared_ptr.
      + Added owner_hash_value to shared_ptr, weak_ptr.
      + Added owner_equal_to, owner_hash.
      + Added std::hash specializations for shared_ptr, local_shared_ptr.
      + Added boost::hash support to, and std::hash, std::equal_to
        specializations for, weak_ptr.
  * Stacktrace:
      + Fixed a build error when compiled with -fno-exceptions (thanks to
        Jeremiah Rodriguez #91).
  * System:
      + operator bool() now returns failed() instead of value() != 0.
  * Type_Traits:
      + Implemented conjunction, disjunction, negation, is_trivially_copyable,
        is_scoped_enum, and is_unscoped_enum. (Glen Fernandes)
  * Variant:
      + Fixed warnings on missing override (thanks to EugeneZelenko #78).
      + Fixes for the the Embarcadero compilers (thanks to Edward Diener #79).
      + Updated header locations to avoid warnings about using deprecated
        headers (thanks to Andrey Semashev #80)
  * Variant2:
      + Added support for derived types in visit.
      + Improved compilation performance for many (hundreds of) alternatives.
      + Added support for visit<R>.
  * Wave:
      + Implement C++20 features for variadics, including __VA_OPT__ (PR#75)
      + Implement __has_include (PR#102)
      + Introduce new sample: check_macro_naming, useful with Boost itself (PR#
      + Fix compilation issue caused by std::allocator member removal in C++20
      + Repair Xpressive lexer and token_statistics sample (PR#79)
      + Repair lexertl lexer (PR#78)
      + Ensure hooks are run on predefined macros as well (PR#87)
      + Various minor bug fixes
      + C++98/03 support is now deprecated and will be removed in 1.77
  * YAP:
      + Fixed compilation errors for placeholders; they now work in the general
        case, and in particular work with yap::print().
      + constexpr all the YAP.
      + Fix printing of correct value category in yap::print().
      + Doc clarification.

Updated Tools

  * Boostbook:
      + Change encoding of generated documentation from US-ASCII to UTF-8.
        (Glen Fernandes)

Revision 1.17 / (download) - annotate - [select for diffs], Wed May 6 13:33:53 2020 UTC (3 years, 9 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q4-base, pkgsrc-2020Q4, pkgsrc-2020Q3-base, pkgsrc-2020Q3, pkgsrc-2020Q2-base, pkgsrc-2020Q2
Changes since 1.16: +3 -3 lines
Diff to previous 1.16 (colored)

boost: updated to 1.73.0


Known Issues
These are patches from library authors which were found too late to be fixed in the release. Be careful as they have not been through the normal testing process.

New Libraries
Standard library functions with UTF-8 API on Windows, from Artyom Beilis.

A dynamically resizable string of characters with compile-time fixed capacity and contiguous embedded storage, from Vinnie Falco and Krystian Stasiowski

Updated Libraries
* Update aligned_alloc to support older mingw32.
* Speedup compilation by not including <algorithm>.
* Maintenance work, including CI hardening.
* Fixed compatibility with C++20 concept syntax.
* Marked the POSIX descriptor classes' move constructors as noexcept.
* Added the ssl::host_name_verification class, which is a drop-in replacement for ssl::rfc2818_verification. The ssl::rfc2818_verification class has been marked as deprecated. As a consequence of this change, SSL support now depends on functions that were introduced in OpenSSL 1.0.2.
* Added an ssl::context constructor to take ownership of a native handle.
* Changed C++ language version detection with gcc to use __cplusplus macro.
* Fixed a work counting issue in the asynchronous resolve operation for endpoints.
* Fixed the strand<> converting constructors and assignment operators.
* Ensured that resolvers are restarted correctly after a fork.
* Fixed compatibility with the current NetBSD release.
* Removed spurious handler requirement checks in some async_read overloads.
* Changed the ssl::context class to propagate non-EOF errors from the add_certificate_authority function.
* Fixed a Windows-specific thread_pool destructor hang that occurred when the pool had an associated I/O object.
* Changed the select reactor to recreate the "self pipe trick" sockets on error. This addresses an issue on some versions of Windows, where these sockets are discconected after a system sleep.
* Fixed a compile error in the buffered streams due to the lack of reference collapsing in C++98.
* Changed the priority_scheduler example to demonstrate calls to shutdown() and destroy().
* Removed some unnecessary null pointer checks.
* Changed Windows platform detection to recognise TV titles as Windows apps.
* Added some emscripten compatibility patches.
* Fixed a compile error in the use_awaitable_t::as_default_on function.
* Changed all uses of the boost.bind placeholders to use the boost::placeholders namespace.
* Fixed a potential compile error in the async_compose implementation due to incorrect overload selection.
* Suppressed some non-virtual destructor warnings.
* Various documentation fixes and improvements.
* Added source_location.
* Implemented C++20 atomic_ref. See docs and especially the caveats section.
* Implemented atomic_flag::test operation, which was introduced in C++20.
* atomic<T> should now take into account alignment requirements of T, which makes a difference if those requirements are higher than that of the internal storage of atomic.
* Added static asserts enforcing the requirements on the value type T used with atomic and atomic_ref. This should prohibit invalid types from being used as atomics.
* Improved internal lock pool implementation. The pool is larger, and lock selection accounts for atomic object alignment, which should reduce the potential of thread contention.
* Fixed incorrect x86 code generated for bit_test_and_* operations on 8 and 16-bit arguments. Other architectures are not affected.
* Fixed a possible unaligned memory access in compare_exchange_* operations, if alignment requirements of value_type are less than that of the internal storage of atomic.
* boost/atomic/atomic.hpp no longer includes boost/atomic/atomic_flag.hpp and boost/atomic/fences.hpp and only defines the boost::atomic class template and related typedefs. Include the other headers explicitly or use boost/atomic.hpp to include all parts of Boost.Atomic.
* The atomic<T>::storage() accessor and associated atomic<T>::storage_type type are deprecated. Instead, users are advised to use atomic<T>::value() and atomic<T>::value_type, respectively. Users can define BOOST_ATOMIC_SILENCE_STORAGE_DEPRECATION to disable deprecation warnings for the time of transition. The deprecated pieces will be removed in a future release.
* Removed support for BOOST_ATOMIC_DETAIL_HIGHLIGHT_OP_AND_TEST. This macro was used as a helper for transition to the updated returned values of *_and_test operations in Boost.Atomic 1.67, which was released 2 years before 1.73.
* This is a maintenance update.
* Nested mutable_data_type in Beast dynamic buffers is deprecated.
* We'd love to know how you or your company use Beast, consider adding an entry to the Companies and Individuals Using Beast list.
* See the full Release Notes for a complete list of changes.
* IBM Z: Fix fcontext routines
* mips64/n64: .align 3
* Use OSPLAT MIPS32/MIPS64 to set different ABI
* Fix non-PIC in RISC-V assembly
* Added boost::polymorphic_downcast for references (thanks to Julien Delacroix for the patch).
* Significant docs update.
* Support constexpr in c++14 and above
* Make date_time all inline. Users no longer need to link the library for any functions. Library remains for build compatibility.
* Deprecate support for legacy io and USE_DATE_TIME_PRE_1_33_FACET_IO macro
* Misc documentation updates and bugfixes.
* Fixes and tests for demangling in boost::dll::smart_library
* Make UB sanitizers happy with boost::dll::load_mode::type
* Ceased dependence on MPL improving compile times
* Clang and ICC on Windows fixes and CI support for those platforms
* Maintenance work, including CI hardening and tests improving.
Dynamic Bitset:
* Fixed a portability issue in the definition of the maximum block limit.
* Maintenance work.
* Improvements
  - Missing input combinations in intersection() and introduction of tupled-output.
  - Added d3::point_xyz geometry model (thanks to Digvijay Janartha).
* Solved issues
  - Incorrect definition of EPSG:3785.
* Bugfixes
  - R-tree exception-safety improvement.
  - Andoyer inverse formula fixed for close points.
  - Fixed dangling reference in distance algorithm.
* Deprecation
  - Support for C++03 has been deprecated and Geometry will require C++14 from Boost 1.75 onwards.
* Added move constructor and move assignment operator to image class
* New member function size() in any_image_view class
* Replace Boost.Test with Boost.LightweightTest as the only test framework used in GIL. This also restructured the test/extension/io/ sub-tree and targets in related Jamfile-s.
* Removed remaining uses of Boost.MPL
* Renamed all macros using BOOST_GIL_ prefix
* Renamed all CMake configuration options using BOOST_GIL_ prefix
* Removed extension/dynamic_image/reduce.hpp as unused and possibly unfinished. An implementation attempt of techniques described in the paper Efficient Run-Time Dispatching in Generic Programming with Minimal Code Bloat by Lubomir Bourdev, Jaakko Jarvi.
* Removed direct dependency on Boost.MPL, Boost.System and Boost.Test.
* Started removing public macros for compile-time configuration of I/O extension tests, i.e. BOOST_GIL_IO_TEST_ALLOW_READING_IMAGES and BOOST_GIL_IO_TEST_ALLOW_WRITING_IMAGES. Instead, if a test target is built, it builds all its test cases unconditionally.
* Avoid longjmp interaction during destruction of I/O extension objects.
* Fixed missing alignment default value in constructor of image class.
* Fixed segmentation fault when reading corrupted PNG file.
* Fixed illegal initialization of return values in the old IOv1 interface of I/O extension.
* Added crop command to reduce algorithm
* slice command in reduce now works on category axis
* Added count accumulator, can be used to add arbitrary metadata to each cell
* sum algorithm gained a new argument to optionally sum only over inner bins
* Several fixes for bugs in corner cases
* Enhanced documentation
* Remove references to date_time compiled library.
* Fix forward decl lower and upper less equal.
* Misc bugfixes.
* Made all the IOS state saver classes non-copyable. (Glen Fernandes)
* Correctly handle error upon first read from the input stream when reading a quoted string. (Glen Fernandes)
* Implemented ostream_joiner for delimiter based joining. (Glen Fernandes)
* Relocated ostream_string from the Utility library to the IO library as ostream_put.
* Correctly handle stream width and fill in quoted output. (Glen Fernandes)
* Optimize quoted output to write directly to the stream buffer. (Glen Fernandes)
* Glen Fernandes became the maintainer of the IO library.
* Maintenance work, including CI hardening and better workarounds for broken standard libraries
* Default sink used in trivial logging, when no sinks are registered in the logging core, now automatically flushes output after each log record
* core::flush now performs a flush on the default sink used for trivial logging, when no sinks are registered.
* Added a workaround for some syslog API implementations (e.g. glibc), which do not save the application identification string in openlog call. Such implementations could access already freed memory on each syslog call, resulting in undefined behavior.
* Fixed that log file rotation on a specific day of month (e.g. rotation_at_time_point(boost::gregorian::greg_day(1))) could be silently ignored and not happen.
* Fixed that text_file_backend::rotate_file could throw if there were no log records written yet and target file name pattern was set.
* Ported various components of the library to std::allocator_traits to improve compatibility with C++20 allocators.
* Fixed compilation errors when building in MSYS2 Cygwin environment.
IMPORTANT: C++03 support is now deprecated and will be removed from March 2021.
* Added Cubic Hermite Interpolation.
* Added Modified Akima Interpolation.
* Added PCHIP Interpolation.
* Added Quintic Hermite Interpolation.
* Added entropy to numerous distributions.
* Allow trivial quadrature case where the two end points are equal, and in addition allow bounds to be interchanged.
* Fix exp_sinh quadrature to work with complex types over a non-native range.
* Fix miscellaneous compiler warnings in factorial.hpp.
* Use std::chrono rather than boost::chrono in timed pFq calculations.
* Remove much of the old boost::mpl dependencies to improve constexpr support.
* Added mp_unique_if (contributed by Kris Jusiak)
* Added mp_flatten
* Added mp_rotate_left, mp_rotate_right (contributed by Duncan Barber)
* Added mp_compose
* Added mp_power_set
* Added mp_partial_sum
* Added mp_iterate
Multi-index Containers:
* multi_index_container is now AllocatorAware.
* Swapping of internal KeyFromValue, Compare, Hash and Pred objects now selects the appropriate swap function between std::swap and ADL candidates, in accordance with standard specifications in [swappable.requirements]
* Provided some internal copy constructors and assignment operators whose default implicit definition is deprecated in C++11 onwards ([depr.impldec]), which was warned about on some compilers.
* IMPORTANT: Mark C++03 support as deprecated and due for removal in 2021.
* Big update to cpp_int adds faster Karatsuba and Coomba multiplication routines.
* Fix conversion of gmp_rational to long double and __float128
* Fix up libtommath support to function with the latest libtom releases.
* Fix up some incompatibilities with the latest Intel C++ compiler.
* Fix up constexpr arithmetic support for latest MSVC release.
* Performance of Outcome-based code compiled by clang has been greatly improved. The previous implementation of Outcome's status bitfield confused clang's optimiser, which caused low quality codegen. Unlike most codegen issues, this was noticeably in empirical benchmarks of real world code, as was shown by P1886 Error speed benchmarking.
* The safe part of the better_optimisation Outcome v2.2.0 future branch was merged to Outcome v2.1.3 which includes a new status bitfield implementation. This appears to not confuse clang's optimiser, and clang 9 produces code which routinely beats GCC 9's code for various canned use cases.
* Installability is now CI tested per commit. Due to installability of standalone Outcome (e.g. make install) breaking itself rather more frequently than is ideal, installability is now tested on CI per commit.
* Newer Concepts implementing compilers were unhappy with the early check for destructibility of T and E, so removed template constraints, falling back to static assert which runs later in the type instantiation sequence.
* A false positive undefined behaviour sanitiser failure in some use cases of Experimental Outcome was worked around to avoid the failure message.
* Suppressed a potential redundant move warning in boost::poly_collection::for_each.
* Fixed a bug by which elements were copied rather than moved in allocator-extended move construction and move assigment between collections with non-propagating, unequal allocators.
* Allocator-extended move construction no longer decays to allocator-extended copy construction for the legacy version of libstdc++-v3 shipped with GCC 4.8 (which can also be used by Clang).
* Added documentation on distribution of PDBs
* Fixed msvc-9 build
* Maintenance work, including test fixes fixing typos CI improvements and hardening, inspect tool fixes.
* Boost.test v3.13 see the Changes log for more details.
* New feature: It is now possible to combine tolerance indication, user message and collection comparison modifier in a single BOOST_TEST expression. See change logs for more details.
* Added an overload of throw_exception that takes a boost::source_location object.
* NOTE: Projects using BOOST_THROW_EXCEPTION with exceptions disabled will need to add a definition of this new overload.
* Added introspection of function templates for more recent C++ compilers versions from gcc and vc++. as well as all versions of clang. Older versions of vc++ before 14.0 and gcc prior to 4.8 may fail.
* Added specific introspection for elements of struct/class, enum, and union types, which can be used for more fine-grained introspection than the general 'type' introspection.
* Maintenance work, including CI integration with inspect tool.
* The ostream_string facility has moved from the Utility library to the IO library as ostream_put.
* Removed unused includes
* Fixed zero-as-null-pointer-constat warnings
* Maintenance work, including typo fixes.
* Added support for std::hash, boost::hash.
* variant<T...> is now trivial when all types in T... are trivial. This improves performance by enabling it to be passed to, and returned from, functions in registers.
* Headers in boost/detail/winapi are deprecated and will be removed in a future release.
* Boost.WinAPI headers no longer include winerror.h. Include boost/winapi/error_codes.hpp to get Windows error codes.

Revision 1.16 / (download) - annotate - [select for diffs], Sun Jan 12 10:10:04 2020 UTC (4 years, 1 month ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2020Q1-base, pkgsrc-2020Q1
Changes since 1.15: +3 -3 lines
Diff to previous 1.15 (colored)

boost: updated to 1.72.0

Version 1.72.0

Changed the async_initiate helper function to automatically deduce its return type, for C++11 or later.
Changed all asynchronous operations to use automatically deduced return types, for C++14 or later.
Introduced concepts to support async_initiate.
Added the nested template type rebind_executor to all I/O object types.
Changed the initiation function objects to report their associated I/O executor via the nested type executor_type and member function get_executor().
Added the default_completion_token trait, giving I/O executor types an associated default completion token type for use with asynchronous operations. This trait is specialised for the use_awaitable completion token, for example, to allow asynchronous operations to be used as follows: co_await socket.async_connect(my_endpoint).
Added missing async_initiate to the Windows-specific I/O objects' asynchronous operations.
Ensured that the executor type is propagated to newly accepted sockets.
Changed to require that Protocol copy and move operations never throw.
Changed to require that Endpoint default constructor and move operations never throw.
Added the noexcept qualifier to protocol accessors.
Added the noexcept qualifier to socket move constructors.
Fixed issues associated with opening serial ports on Windows:
Use the correct constant to initialise the RTS control flag.
Specify a default baud rate (9600).
Fixed a lost "outstanding work count" that can occur when an asynchronous accept operation is automatically restarted.
Consult the Revision History for further details.

Added a workaround for __float128 not being considered as a floating point type by some versions of libstdc++.
Improved compatibility with clang-win compiler.

This is a maintenance update containing bug fixes, and updates to use the new features delivered in Boost.Asio.
We'd love to know how you or your company use Beast, consider adding an entry to the Companies and Individuals Using Beast list.
See the full Release Notes for a complete list of changes.

Circular Buffer:
Fix: max_size() now takes the allocator's max_size() into account. (Glen Fernandes)

architecture s390x supported
execution_context removed

Made endian_reverse, conditional_reverse and *_to_* constexpr on GCC and Clang
Added convenience load and store functions
Added floating point convenience typedefs
Added a non-const overload of data(); changed its return type to unsigned char*
Added __int128 support to endian_reverse when available
Added a convenience header boost/endian.hpp

Extracted filesystem_error to exception.hpp; file_status and associated enums and functions to file_status.hpp; directory_entry, directory_iterator and recursive_directory_iterator to directory.hpp.
Deprecated: For backward compatibility operations.hpp still includes the new headers exception.hpp, file_status.hpp and directory.hpp, unless BOOST_FILESYSTEM_NO_DEPRECATED macro is defined. These implicit includes are considered deprecated and will be removed in a future release. Users are encouraged to include the new headers directly or include filesystem.hpp.
The filesystem_error exception is now implemented in the compiled library of Boost.Filesystem. Users may need to add linking with Boost.Filesystem library in their projects.
On POSIX.1-2008 platforms, use utimensat instead of utime. utime is declared obsolete in POSIX.1-2008 and can be disabled e.g. in uClibc-ng.
directory_iterator is now left in the end state on memory allocation errors.
In directory_iterator on POSIX systems, support for readdir/readdir_r has been reworked to avoid memory allocations for dirent structures when readdir is used. This reduces memory consumption and eliminates the possibility of buffer overruns in case if readdir produces a very long directory name.
On Windows, use Boost.WinAPI to select the target Windows version.
New: Added directory_options enum, which reflects the same named enum from C++20. The enum is supported in directory_iterator and recursive_directory_iterator to customize iteration behavior. In particular, the iterators now support skipping directories that can't be opened due to insufficient permissions. The symlink_option enum is now deprecated and should be replaced with directory_options.
By default, recursive_directory_iterator is now reset to the end state in case of errors, as required by C++20.
New: Added directory_options::pop_on_error option, which configures recursive_directory_iterator so that it attempts to recover from iteration errors by repeatedly invoking pop() until it succeeds or the end state is reached.
New: Added directory_options::skip_dangling_symlinks option, which configures recursive_directory_iterator so that it doesn't follow dangling directory symlinks and continues iteration instead of reporting an error.
Deprecated: The following members of recursive_directory_iterator are now marked as deprecated: level(), no_push_pending(), no_push_request(), no_push(). Users are advised to replace their use with the standard counterparts: depth(), recursion_pending(), disable_recursion_pending(). Note that recursion_pending() has the opposite meaning compared to no_push_pending() and no_push_request(). Deprecated methods will be removed in a future release.
Fixed path::lexically_relative (and any dependent algorithms) to correctly handle empty, dot and dot-dot path elements in its argument. The behavior is made closer to C++17 std::path::lexically_relative in that empty and dot path elements are ignored and dot-dot path elements are accounted by decreasing the number of dot-dot path elements to generate in the resulting relative path.

Glen Fernandes rewrote the implementations of factory and value_factory to provide the following features:
Support r-value arguments when possible
Support arbitrary number of arguments via variadic templates when possible
Support allocators that are final
Support allocators that use fancy pointers
Support for disabled exceptions (BOOST_NO_EXCEPTIONS)
Improved compilation times
The following features have been removed:
Increasing limits for C++03 compilers through BOOST_FUNCTIONAL_VALUE_FACTORY_MAX_ARITY
Using boost::none_t in place of void through BOOST_FUNCTIONAL_FACTORY_SUPPORT_NONE_T

GSoC 2019: Lanczos resampling for image down scaling.
GSoC 2019: Methods for binary thresholding, inverted binary thresholding and truncation thresholding.
GSoC 2019: Otsu thresholding method.
GSoC 2019: Adaptive thresholding using mean or gaussian-weighted sum of the neighbourhood area.
GSoC 2019: Harris response calculation (corner detector without non-maximum filtering).
GSoC 2019: Hessian corner detector.
GSoC 2019: Types for defining 2D kernel, kernel_2d and kernel_2d_fixed, in Numeric extension.
GSoC 2019: Implementation of 2D convolution as new function convolve_2d.
GSoC 2019: Box filtering using the average filter.
GSoC 2019: Blur function based on normalized mean filter.
GSoC 2019: Sobel and Scharr operators.
GSoC 2019: Median filter to remove noise from image.
Continued adding new test cases and significantly improved overall test coverage.
Documented purpose of cached_location_t.
Function convolve_1d in Numeric extension for convenient use of convolve_rows and convolve_cols.
Function extend_boundary in Numeric extension to perform image boundary extension.
Project release notes maintained in Markdown file

Move all tests, core features and extensions, inside test/ directory.

Replace Boost.MPL with Boost.MP11.
Removed use of Boost.TypeTraits.
Dropped support for GCC <= 4.8.
Remove include/boost/gil/version.hpp file as unused.

Undetermined value of default-initialized channel and pixel objects.
Undefined behaviour due to std::is_trivially_default_constructible specializations.
Crash when reading PNG files with an invalid header.
Applied the Rule of Three for numerous types.
Removed uses of deprecated implicit definition of defaulted copy assignment operator or copy constructor.

Several new features and performance improvements, some bug-fixes
See the full Release Notes for a complete list of changes

Improved compatibility with clang-win compiler.

Documentation clarifications.
Fixed scatterv bug when using explicit input buffer offsets.
Enable usage of MPI_Probe and friend with Intel MPI >= 2019.4
Symbol visibility on Windows

Added Hypergeometric functions 1F0, 0F1, 2F0, 1F1 and pFq.
Added Jacobi polynomial (and derivatives) evaluation.
Added Gegenbauer polynomial (and derivatives) evaluation.
Added Cardinal B-Splines (and derivatives) as polynomial functions in their own right.
Added Cardinal Trigonometric Interpolation.
Added new statistics sub-section.
Added One Sample Student's T Test.
Added Anderson Darling test for normality.
Added Ljung Box test for auto-correlation.
Added Runs test for random sequences.
The headers boost/math/tools/univariate_statistics.hpp and boost/math/tools/bivariate_statistics.hpp, have been deprecated in favor of boost/math/statistics/univariate_statistics.hpp and boost/math/statistics/bivariate_statistics.hpp.
Added The Empirical CDF distribution.
Reworked the Sterling approximation used by multiprecision gamma functions to be applicable to all the function that use the Lanczos approximation at regular precision. Also extended Lanczos approximations up to 100 decimal digit precision.

Big constexpr update allows cpp_int and float128 arithmetic to be fully constexpr with gcc and clang 9 or later, or any compiler supporting std::is_constant_evaluated().
Fix bug in variable precision mpf_float which causes it to go into a tailspin trying to select the correct precision - see

Standalone outcome is now make install-able, and cmake find_package() can find it. Note that you must separately install and find_package() Outcome's dependency, quickcpplib, else find_package() of Outcome will fail.
The git submodule mechanism used by standalone Outcome of specifying dependent libraries has been replaced with a cmake superbuild of dependencies mechanism instead. Upon cmake configure, an internal copy of quickcpplib will be git cloned, built and installed into the build directory from where an internal find_package() uses it. This breaks the use of the unconfigured Outcome repo as an implementation of Outcome, one must now do one of: 1. Add Outcome as subdirectory to cmake build. 2. Use cmake superbuild (i.e. ExternalProject_Add()) to build and install Outcome into a local installation. 3. Use one of the single header editions.
For standalone Outcome, the current compiler is now checked for whether it will compile code containing C++ Concepts, and if it does, all cmake consumers of Outcome will enable C++ Concepts. Set the cmake variable CXX_CONCEPTS_FLAGS to an empty string to prevent auto detection and enabling of C++ Concepts support occurring.
OUTCOME_TRY operation now hints to the compiler that operation will be successful. [P1886 Error speed benchmarking]( showed that there is considerable gain in very small functions by hinting to the compiler whether the expression is expected to be successful or not. OUTCOME_TRY previously did not hint to the compiler at all, but now it does. A new suite of macros OUTCOME_TRY_FAILURE_LIKELY hint to the compiler that failure is expected. If you wish to return to the previously unhinted behaviour, define OUTCOME_TRY_LIKELY(expr) to (!!expr).
Support for C++ Coroutines has been added. This comes in two parts, firstly there is now an OUTCOME_CO_TRY() operation suitable for performing the TRY operation from within a C++ Coroutine. Secondly, in the header outcome/coroutine_support.hpp there are implementations of eager<OutcomeType> and lazy<OutcomeType> which let you more naturally and efficiently use basic_result or basic_outcome from within C++ Coroutines -- specifically, if the result or outcome will construct from an exception pointer, exceptions thrown in the coroutine return an errored or excepted result with the thrown exception instead of throwing the exception through the coroutine machinery (which in current compilers, has a high likelihood of blowing up the program). Both eager<T> and lazy<T> can accept any T as well. Both have been tested and found working on VS2019 and clang 9.
make_error_code() and make_exception_ptr() are now additionally considered for compatible copy and move conversions for basic_result<>. This lets you construct a basic_result<T, E> into a basic_result<T, error_code>, where E is a custom type which has implemented the ADL discovered free function error_code make_error_code(E), but is otherwise unrelated to error_code. The same availability applies for exception_ptr with make_exception_ptr() being the ADL discovered free function. basic_outcome<> has less support for this than basic_result<> in order to keep constructor count down, but it will accept via this mechanism conversions from basic_result<> and failure_type<>.

Bug fixes:
The detection of [[nodiscard]] support in the compiler was very mildly broken.

Maintenance work.

Topic added which discusses emptiness
Support for the C++20 __VA_OPT__ construct
BOOST_PP_VARIADIC_HAS_OPT whether __VA_OPT__ is supported at the C++20 level
BOOST_PP_CHECK_EMPTY test for emptiness using __VA_OPT__ at the C++20 level
BOOST_PP_VA_OPT more flexible alternative to __VA_OPT__ at the C++20 level

Smart Pointers:
Implemented allocate_unique for scalars and arrays. (Glen Fernandes)

Boost.test v3.12 see the Changes log for more details.
New feature:
Support for C++17 std::string_view has been added.
Better diagnostic on boost::exception and no rtti mode (thanks to Mikhail Pilin / [pull_request 234])

BOOST_VMD_IS_EMPTY updated to use __VA_OPT__ at the C++20 level has 100% reliability

Revision 1.15 / (download) - annotate - [select for diffs], Thu Aug 22 12:17:53 2019 UTC (4 years, 6 months ago) by ryoon
Branch: MAIN
CVS Tags: pkgsrc-2019Q4-base, pkgsrc-2019Q4, pkgsrc-2019Q3-base, pkgsrc-2019Q3
Changes since 1.14: +3 -3 lines
Diff to previous 1.14 (colored)

Update to 1.71.0


New Libraries

    Variant2: A never-valueless, strong guarantee implementation of std::variant, from Peter Dimov.

Updated Libraries

        Support for any integral type in the integral versions of align_up and align_down.
        Revised the implementation of aligned_allocator to no longer require a specialization for void.
        Define propagate_on_container_move_assignment and is_always_equal in aligned_allocator.
        Improved performance slightly by eliminating a redundant move construction when completed handlers are dispatched.
        Eliminated a compiler warning by annotating a case fall-through in the free function connect() implementation.
        Fixed the is_*_buffer_sequence detection traits for user-defined sequence types.
        Fixed some Windows-specific warnings about an incompatible pointer cast when obtaining the CancelIoEx entry point.
        Changed to automatically set the defaults when opening a serial port on Windows.
        Changed the serial port get_option() member function to be const.
        Fixed a name hiding issue with the WinRT stream-oriented socket backend's shutdown function.
        Applied a minor fix to the documentation for is_dynamic_buffer.
        Added some support for Haiku OS.
        Added wolfSSL compatability.
        Changed to require C++17 or later for coroutines TS support with clang.
        Fixed a doxygen generation problem in the tutorial.
        Ensured example programs are correctly incorporated into the documentation.
        Static initialization of the default constructed boost::any is now possible.
        Fixed performance regression in assignment on a compilers without move-semantics.
        Maintenance work.
        This version consists mostly of bug fixes and performance improvements.
        Substantial work included for the split compilation mode, to reduce compile time when defining BOOST_BEAST_SEPARATE_COMPILATION.
        We'd love to know how you or your company use Beast, consider adding an item to the Companies and Individuals Using Beast list.
        See the full Release Notes for a complete list of changes.
    Circular Buffer:
        Correct doxygen generated reference to no longer show internal members. (Glen Fernandes)
        Eliminate ubsan warning on add and sub. (Glen Fernandes)
        Fix incorrect check in is_uninitialized. (Niklas Fejes)
        Fixed bugs:
            GitHub #47: "added alignment specification for small_vector".
            GitHub #88: "Implement C++17 MoveAssignable requirements for self-move assignments".
            GitHub #107: "Alignment ignored in resource_adaptor".
            GitHub #109: "Get rid of integer overflow in copy_move_algo.hpp (-fsanitize=integer)".
            GitHub #110: "Avoid gcc 9 deprecated copy warnings in new_allocator.hpp".
            GitHub #112: "vector::resize() compilation error with msvc-10..12: data is not a member of boost::detail::aligned_storage".
            GitHub #114: "Fix small_vector noexcept specification".
            GitHub #116: "MSVC + boost 1.70 compilation error when windows.h is already included (detail/thread_mutex.hpp)".
            GitHub #117: "flat_map/map::insert_or_assign with hint has wrong return types".
            GitHub #118: "Non-unique inplace_set_difference used in in flat_tree_merge_unique and iterator invalidation in insert_unique".
            GitHub #122: "Fix has_trivial_destructor_after_move".
            GitHub #123: "With heterogeneous lookup, equal_range can result in a range with length greater than 1".
        deque can now have options, using deque_options. The block size/bytes can be be specified.
        static_vector can now have options, using static_vector_options. Alignment and throwing behaviour can be be specified.
        small_vector can now have options, using small_vector_options. Alignment and growth factor can be be specified.
        Add support for RISC-V LP64D
        #72: Fix ABI violation on ppc64 ELFv2
        #99: cleanup of stack if creating ucontext fails
        Maintenance work.
        Added functions alloc_construct, alloc_construct_n, alloc_destroy, and alloc_destroy_n in <boost/core/alloc_construct.hpp> for allocator aware and exception safe construction and destruction of objects and arrays. (Glen Fernandes)
        Added constexpr functions first_scalar in <boost/core/first_scalar.hpp> for obtaining a pointer to the first scalar element of an array. Given a pointer of type T* they return a pointer of type remove_all_extents_t<T>*. (Glen Fernandes)
        Added class template noinit_adaptor in <boost/core/noinit_adaptor.hpp> which is an allocator adaptor that converts any allocator into one whose construct(ptr) performs default initialization via placement new, and whose destroy(ptr) invokes the value_type destructor directly. (Glen Fernandes)
        Added class template default_allocator in <boost/core/default_allocator.hpp>, which can serve as a minimal default allocator that has interface similar to C++20 std::allocator, supports configurations with disabled exceptions and does not have std as an associated namespace. The allocator uses operator new and operator delete for allocation. (Glen Fernandes)
        In <boost/core/uncaught_exceptions.hpp> header, added workarounds for better compatibility with QNX SDP 7.0 when libc++/libc++abi libraries are used. (Andrey Semashev, #59)
        The <boost/detail/sp_typeinfo.hpp> header is now marked as deprecated and will be removed in a future release. <boost/core/typeinfo.hpp> should be used instead. (Peter Dimov)
    Dynamic Bitset:
        Enabled hardware-assisted popcount on MSVC (#38).
        Added support for boost::hash and std::hash (#45).
        Support copy-initialization with default constructor (#48).
        Clarified requirements on the value type template parameter
        Added support for float and double
        Added endian_load, endian_store
        Updated endian_reverse to correctly support all non-bool integral types
        Moved deprecated names to the deprecated header endian.hpp
        documentation for shared_work updated
        Fixed incorrect error_code returned from directory iterator increment when readdir_r is used.
        For path, fixed rvalue-aware operator/ return type to return an rvalue instead of rvalue reference. This fixes leaving a dangling reference in the user's code if the result of operator/ is bound to a const reference. (#110)
        Fixes for better compatibility with Windows CE. (#24)
        Added minimal support for CMake. (#106)
        Maintenance work.
        New features:
            Support for thread-safe storages and new thread-safe accumulators
            Support for compiling without exceptions/RTTI (increases performance by 10-20 %) (with Glen Fernandes)
            Performance improvements for 1D and 2D histograms
            boost::histogram::indexed now returns forward iterator range instead of input iterator range
            boost::histogram::indexed_range::accessor is now non-copyable and acts like reference to cell value, making more algorithms from the C++ stdlib work
            boost::histogram::algorithm::reduce with new slice option and option fusion
            boost::histogram::algorithm::project accepts runtime indices for static histograms
        Bug Fixes:
            boost::histogram::algorithm::reduce also works on histograms that have some axis types without reduction support
            boost::histogram::axis::traits::update now works correctly for boost::histogram::axis::variant
            100 % test coverage
            Reduced internal Boost dependencies
            Improved documentation and examples
            Guaranteed no-throw moves for all builtin axis types
            Compile cleanly at higher warning levels
        See changelog for more details.
        Fixed processing of multi-stream files (#87).
        Added support for multi-threaded LZMA (#95).
        GitHub #85 ("warning: Implicit conversion loses integer precision").
        GitHub #86 ("warning: Possible misuse of comma operator").
        GitHub #42: Documentation does not describe treap priority_of_value changes
        GitHub #43: Fix tests with BOOST_INTRUSIVE_VARIADIC_TEMPLATES enabled
        GitHub #45: Disable variadic templates for MSVC-12 to avoid ICEs
        Added tests for boost::filesystem::path conversions #25.
        Maintenance work, including #28.
        New features:
            Improved support for C++17 std::string_view in basic_formatting_ostream. The string view can now participate in character code conversion on output.
            Added auto_newline formatter and stream manipulator. It can be used to ensure that formatted output always ends with a newline while avoiding duplicate newlines.
            In the output stream, text file and text multi-file sink backends added support for configuring behavior with regard to appending a trailing newline to every formatted log record. Use auto_newline_mode named parameter of the backend constructor or call the set_auto_newline_mode method on the sink backend.
            Note: The default behavior with regard to trailing newlines added by sink backends has changed slightly compared to the previous Boost.Log releases. The backends will now only add a trailing newline if there isn't one in the formatted log message string already. In previous releases a newline was added unconditionally.
            Added support for passing arbitrary function objects in the filter and format named parameters to sink constructors and convenience functions for initializing sinks. For example, it is now possible to specify C++11 lambda functions directly in these parameters. (#63)
            In the default filter and formatter factories used in filter and formatter parsers, added support for severity level attribute values of type boost::log::trivial::severity_level. For filters, the support is limited to attributes with "Severity" name.
        Bug fixes:
            Fixed incorrect parsing of components of the rotated file names while scanning for files in the text file sink backend. If the file name pattern ended with a placeholder (for example, a file counter), the scan_for_files method would not find files matching that pattern in the target storage, leaving them unmanaged. In particular, such files would not be deleted to free target storage. (#78)
            Updated basic_formatting_ostream and basic_record_ostream to make it possible to overload stream output operators for pointers to user-defined types. User-defined operator<< overloads taking std::basic_ostream and a pointer argument should now be picked up by the compiler when the pointer is being written to one of Boost.Log streams. (#84)
        See changelog for more details.
        New features:
            Catmull-Rom interpolator now works in C++11
            Cardinal quadratic B-spline interpolation
            Domain of elliptic integrals extended
            sin_pi and cos_pi performance improvements
            Forward-mode automatic differentiation
            Vector valued barycentric rational interpolation
            Ooura's method for evaluation of Fourier integrals
        Bug fixes:
            Multiple compatibility issues with Multiprecision fixed
            Lambert-W fixed on a rare architecture
        New features:
            In C++11 variadic template support for the following: sequence, one_of_c, one_of, repeated_one_of, repeated_one_of1, one_char_except_c, one_char_except.
        Bug fixes:
            BOOST_METAPARSE_STRING does not use out of range character values as template arguments.
            any_of_c<> does not create empty array in C++14.
        Git Issue #26: "Invalid iterator increment/decrement in the last iteration of adaptive_sort_combine_blocks".
    Multi Array:
        Simplify allocator support by using new alloc_construct_n and alloc_destroy_n facilities from Core. (Glen Fernandes)
    Multi-index Containers:
        Added variants of const_mem_fun and mem_fun for differently qualified member functions (issue #24).
        Terse key specification syntax now correctly handles noexcept-specified member functions (issue #24).
            #184 As per request from Boost release managers, relocated version.hpp and revision.hpp into detail, and added the Boost licence boilerplate to the top of every source file which was missing one (I think). Also took the opportunity to run the licence restamping script over all Outcome, so copyright dates are now up to date.
            #185 Add FAQ item explaining issue #185, and why we will do nothing to fix it right now.
            #189 Refactored the OUTCOME_TRY implementation to use more clarified customisation points capable of accepting very foreign inputs. Removed the std::experimental::expected<T, E> specialisations, as those are no longer necessary. Fixed the documentation for the customisation points which previously claimed that they are ADL discovered, which they are not. Added a recipe describing how to add in support for foreign input types.
            #183 Added a separate motivation/plug_error_code specifically for Boost.
        Bug fixes:
            OUTCOME_VERSION_MINOR hadn't been updated to 1.
            #181 Fix issue #181 where Outcome didn't actually implement the strong swap guarantee, despite being documented as doing so.
            #190 Fix issue #190 in Boost edition where unit test suite was not runnable from the Boost release distro.
            #182 Fix issue #182 where trait::is_exception_ptr_available<T> was always true, thus causing much weirdness, like not printing diagnostics and trying to feed everything to make_exception_ptr().
            #192 Fix issue #192 where the std::basic_outcome_failure_exception_from_error() was being defined twice for translation units which combine standalone and Boost Outcome's.
        Upgraded keyword generation macro BOOST_PARAMETER_TEMPLATE_KEYWORD (#15).
        Moved keyword generation macro BOOST_PARAMETER_NESTED_KEYWORD from Accumulators to this library (#28).
        Added support for std::reference_wrapper and std::ref() (#16).
        Moved boost::parameter::required, boost::parameter::optional, and boost::parameter::deduced metafunction definitions to their own header files in directory boost/parameter (#18).
        Added support for Boost.Parameter-enabled function call operators (#20).
        Added support for parameter category qualifiers "forward", "consume", and "move_from" (current qualifiers are "in", "out", and "in_out") (#21) (#23) based on Added new usage syntax BOOST_PARAMETER_NAME((object-name), namespace-name) qualifier(tag-name)) and BOOST_PARAMETER_NAME(qualifier(name)). (Existing code that uses qualifiers directly and correctly with BOOST_PARAMETER_FUNCTION and other code generation macros should remain unaffected for now, so no breaking changes.) The reason for the change in usage is to enable applying of parameter category constraints to Boost.Parameter-enabled functions and constructors invoked through argument composition. (Otherwise, it is currently possible to use argument composition to bypass parameter category constraints applied in BOOST_PARAMETER_FUNCTION et. al.)
        Added support for perfect forwarding (#23) (#26), so that parameter::parameters::operator() can accept non-const rvalues. As a positive side effect, Boost.Parameter-enabled functions and constructors are no longer bound by BOOST_PARAMETER_MAX_ARITY on compilers that support perfect forwarding. User code can now check for this support by detecting the configuration macro BOOST_PARAMETER_HAS_PERFECT_FORWARDING, or manually turn off this support by defining the configuration macro BOOST_PARAMETER_DISABLE_PERFECT_FORWARDING.
        Added metafunctions boost::parameter::is_argument_pack (#27), boost::parameter::are_tagged_arguments (#52), and boost::parameter::result_of::compose (#75).
        Added variadic function template boost::parameter::compose() which takes in named arguments and returns them in an argument pack (#52). For compilers that do not support perfect forwarding, the configuration macro BOOST_PARAMETER_COMPOSE_MAX_ARITY determines the maximum number of arguments that boost::parameter::compose() can take in (#61).
        Added support for Boost.MP11 (#47) (#66) (#70). User code can now check for this support by detecting the configuration macro BOOST_PARAMETER_CAN_USE_MP11, or manually turn off this support by defining the configuration macro BOOST_PARAMETER_DISABLE_MP11_USAGE.
        Improved support for parameter-dependent return types via SFINAE (#73).
        Fix a ptr_vector regression introduced in 1.66.0 (#24).
        Maintenance work.
        Added aliasing constructors to weak_ptr
        Added weak_ptr<T>::empty()
        Added enable_shared_from, shared_from, and weak_from
        Fixed output of name(), source_location() and source_line() for the default constructed frame with thread sanitizer builds in C++98 mode.
        Fixed output of long strings from name() and source_location() on MSVC #78.
        Maintenance work.
        Boost.test v3.11 see the Changes log for more details.
        Breaking changes:
            Boost.Test shows deprecation warnings if some very old headers as deprecated. If you encounter such warnings, please follow the indications: those headers will be removed in a future release.
        New feature:
            Now BOOST_TEST can be used to compare abstract types
        Bug fixes and pull requests:
            GitHub Issues: #209, #218
            GitHub Pull Requests: #219, #224
        Implemented function template ostream_string in <boost/utility/ostream_string.hpp> to optimally write any kind of string content to an output stream. It satisfies the requirements of [ostream.formatted.reqmts]. (Glen Fernandes)
        Optimized the stream output operators of basic_string_view and basic_string_ref to write directly to the rdbuf stream buffer. (Glen Fernandes)
        Breaking change: MD5 name-based uuid generation was corrected to be identical on all endian systems. Define BOOST_UUID_COMPAT_PRE_1_71_MD5 to keep the result in a format compatible with 1.66 through 1.70. This does not affect the default name-based uuid generation which is based on SHA1. (#109)
        Fixed compilation of boost::apply_visitor with variants passed by non const reference in #68. Many thanks to Ed Catmur for providing the fix.
        Added support for std::hash (#49). Macro BOOST_VARIANT_DO_NOT_SPECIALIZE_STD_HASH could be defined to avoid those specializations.
        Added micro optimizations for binary size and performance by Nikita Kniazev in #63 and #66.
        Maintenance work, including #64 by Nikita Kniazev and #67 by Hans Dembinski.
        Added an example showing how to make self-evaluating YAP expressions (that is, expressions that don't need an explicit call to evaluate() or transform()).

Revision 1.14 / (download) - annotate - [select for diffs], Mon Jul 1 09:09:52 2019 UTC (4 years, 8 months ago) by jperkin
Branch: MAIN
Changes since 1.13: +3 -3 lines
Diff to previous 1.13 (colored)

boost: Fix DEPENDS.

Revision 1.13 / (download) - annotate - [select for diffs], Thu Dec 13 19:22:56 2018 UTC (5 years, 2 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2019Q2-base, pkgsrc-2019Q2, pkgsrc-2019Q1-base, pkgsrc-2019Q1, pkgsrc-2018Q4-base, pkgsrc-2018Q4
Changes since 1.12: +3 -3 lines
Diff to previous 1.12 (colored)

boost: updated to 1.69.0

New Libraries

Safe Numerics:
A library for guaranteed correct integer arithmetic for C++14 and later, from Robert Ramey.

Updated Libraries

Fixed issue with visibility. Now boost::any variables constructed in one shared library with hidden visibility could be used and destroyed in other shared library with hidden visibility.
Maintenance: dropped some dependencies on other Boost libraries, fixes for docs.

Fixed a problem with the detection of std::future availability with libstdc++.
Fixed compile error in regex overload of read_until.
Fixed a timer heap corruption issue that can occur when moving a cancelled timer.
Fixed detection of std::experimental::string_view and std::string_view with newer clang/libc++.
Fixed MSVC version detection for availability of std::invoke_result.
Fixed the buffer sequence traits to test the new requirements, if decltype is available.
Fixed an MSVC issue when building with exceptions disabled.
Added SSL context options for TLS v1.3.
Added a compile-time test for TLS v1 support.
Fixed the macro used to test for TLS v1.2 support.
Prevented global objects from being created once per thread on Windows.
Fixed a crash when using size(), max_size() or empty() on default-constructed resolver results.
Changed to move the return value in basic_resolver_results::begin() to avoid copying.
Enabled move support for the Intel Compiler.
Fixed std::string_view detection issue when using clang-cl.
Fixed the handler tracking operation name for io_context::executor_type::dispatch.
Fixed a buffer overflow that could occur when parsing an address string with a 64-bit scope id.
Added examples showing how to write composed operations.
Added C++11 versions of the Timeouts, Timers, SOCKS4 and SSL examples.
Fixed minor issues in documentation and examples.

Add rvalue reference, perfect forwarding, and variadic template support
Avoid conversion to container's allocator

This version fixes some issues in the examples, and provides a new experimental socket which supports built-in timeouts on asynchronous operations.
New CppCon 2018 websocket chat example and presentation video.
For a complete list of changes, please view the official Release Notes.

Use the empty base optimization for storing allocators that are empty and not final (Glen Fernandes).

Concept Check:
Removed dependency on mpl.

duplicate alias should be missing GCC alias
the clang-win toolset (clang-cl.exe) uses masm from the underlying msvc
remove useless lines in Jamfile.v2
add .file section for *_elf_gas.S files

Implemented boost::empty_value, for library authors to conveniently leverage the Empty Base Optimization to store objects of potentially empty types (Glen Fernandes). This facility is now used in Boost.Beast, Boost.CircularBuffer, Boost.MultiArray, and more.
Implemented boost::quick_exit to provide the C++11 standard library facility std::quick_exit functionality (Peter Dimov).
Reduced the number of statics in Lightweight Test, and employ lighter abort behavior for MSVC compilers upon failure to call boost::report_errors (Glen Fernandes).

Resolved link issues with the smart library
Maintenance: fixes for docs and tests.
Dynamic Bitset:
Performance improvements (over 2x in some cases).
Added range-based set, reset, flip methods

unbuffered_channel push not return
Remove UTF-8 BOM at begining of the file
Fix boost-install use; should only be issued once

Don't use readdir_r on Linux and Android since the readdir function is already thread-safe.
Fixed crashes in boost::filesystem::copy due to undefined behavior in the implementation.
Fixed undefined behavior in boost::filesystem::directory_iterator implementation.
Fixed compilation errors when using directory iterators with BOOST_FOREACH.
Removed workarounds for older PGI C++ compiler versions to fix compilation on the newer ones.
Fixed MSVC warnings about narrowing conversions.
Fixed some issues in GCC related to Boost.MPL placeholder expression handling.
Maintenance fixes.

Removed dependencies on mpl, test

Karney's solution of direct geodesic problem for internal use
Discrete Frechet and Hausdorff distance algorithms
New run-time and upgraded compile-time SRS transformation interfaces (undocumented for now due to potential interface changes).

boost/pending/integer_log2.hpp header is deprecated and will be removed in future releases. Use boost/integer/integer_log2.hpp instead.

Remove call to nonexistent member seekpos() of std::fpos

Fixed compilation problems with ambiguous unqualified calls to advance and distance on iterators whose types involve types in the namespace boost.

Fixed sign-conversion warnings
Maintenance: dropped some dependencies on other Boost libraries, fixed build system warnings.

General changes:
Updated syslog sink backend to avoid using deprecated Boost.ASIO interfaces.
Bug fixes:
Fixed a possible incorrect estimation of the total size of rotated files in the target directory of a text file sink in some cases.
See changelog for more details.

Breaking change: Use explicit operator bool when available

Add LambertW functions.
Update integration routines to support complex valued integrands and contour integrals.
Added the derivative of the Barycentric rational approximation.
Minor fixes to better support variable precision floating point types.
Removed use of deprecated Boost.Endian in favour of Predef.
Updated continued fraction and series evaluation code to support complex types.
Prevent logic error leading to infinite loop in toms748_solve.
Fix mean and standard_deviation for extreme_value_distribution.
Improve heuristics used in newton_raphson_iterate.
Fix result of erf(NaN).
Big push to reduce GCC warnings.
Refactor polynomial addition.
Fix for vxWorks having a real function in the global namespace.
Improve sinc approximations and add better tests.
Fix typo in Student's T hypothesis testing documentation,

Implemented the mp_starts_with facility (Glen Fernandes).

Improve C++11 allocator model support including: Support for C++11 minimal allocators, support for stateful allocators, using the allocator for construction and destruction of the value type, and using the empty base optimization for storing empty or stateless allocators (Glen Fernandes).

Multi-index Containers:
Introduced an alternative terse key specification syntax for C++17 compliant environments.

Big update to better support variable precision types so that the precision of the result is always the largest of all the arguments.
Add support for allocators that are final in __cpp_int (Glen Fernandes).
Removed use of deprecated Boost.Endian in favour of Predef.
Add support for std::string_view.
Fixed minor bug in constant initialization.
Make assignment of non-finite value to cpp_int a runtime errors.
Added typedefs for cpp_bin_float_oct and cpp_complex_oct.

Added Bost.PolyCollection-specific versions of algorithms std::for_each_n and std::sample.

Replace boost::mutex use to avoid a dependency on Boost.Thread

Supports the new C++ standard conforming preprocessor in VC++ 14.1, which is currently enabled by using the /experimental:preprocessor switch, in Visual Studio 2017 15.8 on up.
Add constexpr support

Drop own FP routines in favor of boost::math
Missing visibility mark on exception types
to_utf8: Fixed wchar_t handling on Windows

Spirit V2
Drop own FP routines in favor of boost::math
Missing visibility mark on exception types
Fixed transform_attribute ambiguity
to_utf8: Fixed wchar_t handling on Windows

Missing visibility mark on exception types

libbacktrace usage was significantly improved. BOOST_STACKTRACE_USE_BACKTRACE or boost_stacktrace_backtrace users are encouraged to update:
Memory consumprion dropped down.
Stack capturing became faster by an order of magnitude.
syminfo fallback enabled to provide information for visible symbols even without debug information
Exact location of the backtrace.h header now can be specified via BOOST_STACKTRACE_BACKTRACE_INCLUDE_FILE, to allow backtrace.h header usage on platforms and compilers where that header is unreachable otherwise (for example Ubuntu Xenial + Clang)
Optimized stack capturing if max_depth is set
Added to_string(const stacktrace& ) functions for fast conversion of stacktraces to std::string

Boost.System is now header-only. A stub library is still built for compatibility, but linking to it is no longer necessary.
Even more functions have been marked constexpr.
The destructor of error_category is now protected and no longer virtual. This is a potentially breaking change, but its impact is expected to be limited.
error_category now has a constructor that accepts a 64 bit identifier, enabling distinct category objects to compare equal.
The constructors of error_category are now protected.
A non-allocating, nonthrowing overload of message has been added.
A virtual function failed has been added, allowing categories for which success is not synonymous with 0.
The deprecated boost::system::throws object has been removed.
boost::throws() is now deprecated and its use is discouraged.
The constructor of system_error taking a single error_code argument is now explicit.
system_error::code() now returns by value.

Boost.test v3.9 see the Changes log for more details.
New feature:
Official support of header-only variant of Boost.Test with multiple translation units.
Now possible to manually add a test case by specifying its name, with BOOST_TEST_CASE_NAME
Better support of boost::exception in the logs

Fix the regression and speed up parsing of the boost/type_traits.hpp header by 30%

Added support for non-inheritable empty types to boost::compressed_pair by avoiding the empty base optimization for types which are declared as final (Glen Fernandes).

Fixed issue with visibility. Now boost::bad_visit exception could cross the boundaries of shared library with hidden visibility and could be catched in other shared library with hidden visibility.

Minor changes to support MSVC++ version 14.15 (Visual Studio 2017 version 15.8).
Doc fixes.

Revision 1.12 / (download) - annotate - [select for diffs], Thu Aug 16 15:58:32 2018 UTC (5 years, 6 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q3-base, pkgsrc-2018Q3
Changes since 1.11: +3 -3 lines
Diff to previous 1.11 (colored)

boost: updated to 1.68.0

New Libraries
An expression template library for C++14 and later, from Zach Laine.

Updated Libraries
This version fixes a missing executor work guard in all composed operations used in the implementation. Users who are experiencing crashes related to asynchronous completion handlers are encouraged to upgrade.
For a complete list of changes, please view the official Release Notes.
78: Linker error with context-impl=ucontext: multiple definition of boost::context::detail::current_rec
14: crash while stack unwinding
18: some guidance on why to use coroutine2
20: failes to compile test in due to the error C2039
22: undefined behaviour documentation
170: buffered_channel::try_push has incorrect documentation
172: WIN64: 'invalid conversion from 'HANDLE' to 'std::thread::native_handle_type' errors for builds using mingw-w64
175: throw exception "Operation not permitted"
NUMA support moved to extra library (fiber-numa); enabled via property numa (numa=on)
Added a workaround for ambiguous call of fusion::deque constructor on GCC 4.4/c++0x
Fixed a bug with C-style array
Fixed a fusion::for_each signature to take functor by value
This may break existing code with non-copyable (non-movable) functor, but the implementation wasn't correct for a long time; the documantation was correct from the first. So, please make sure your usage.
Fixed unintentional MPL placeholder substituion bug on fusion::transform.
Moved description, how to conform Fusion sequence as MPL sequence, to mpl section.
Added notes regarding IO facility for adapted type.
469 Horizontal grid shift (nadgrids) in SRS transformations (undocumented for now due to potential interface changes).
478 Box-Segment distance for spherical and geographic coordinate systems.
487 Missing combinations of geometries in distance for spherical and geographic cs
489 Additional direct geodesic problem formulas for internal use
Solved issues
470 Assertion failure with short spherical and geographic segments.
471 Invalid envelope of spherical polygon
498 Unexpected results with expand() and make_inverse() for spherical and geographic CS
488 Handle non-true-references in closing_iterator and ever_circling_range_iterator
495 VxWorks 7 cross-compilation issue.
The I/O extensions have been entirely rewritten.
The library now requires a C++11-compliant compiler.
Documentation has been reformatted and updated.
Conditionally replace deprecated/removed C++98 std::bind1st by std::bind, std::auto_ptr by std::unique_ptr, and std::random_shuffle by std::shuffle.
Fix compiler error with release builds on VS2015
Fix the Stanford GraphBase examples
Fix friend declarations for iterator_core_access
Add missing <boost/iterator.hpp> include
Avoid an unused variable warning
Fix some typos in documentation
Fix some issues in tests and examples
Lexical Cast:
Fixes for clang-tidy warnings 12092
Improved support for VxWorks.
Save and restore ebx register on x86 PIE targets in the dump stream manipulator implementation.
Support for arbitrary precision complex valued quadrature and hence contour integration
Improve performance of polynomial addition
Continue to improve numerical integration routines, and in particular add support for contour integrals.
Improve accuracy of erfc function's rational approximations.
Multi-index Containers:
Containers of moveable but non-copyable elements can now be serialized (ticket 13478). Thanks to Sébastien Paris for the report.
multi_index_container's default constructor is no longer explicit (ticket 13518).
Support for multiprecision complex numbers
Support added for complex multiprecision numbers.
Changed conversion to unsigned integer types to be truncating to match standard defined behaviour.
Correct bug in MPFR string formatting.
Fix undefined behaviour in cpp_dec_float conversion from long long.
Add support for Eigen interoperability.
float128.hpp: Fix Intel on Windows build.
Fix type used in temporaries when expanding expression templates containing mixed expressions.
Fix infinite loop in gmp_float to fixed-point string conversion.
Update the expression templates to issue static_asserts with better error messages when you try and do something unsupported.
Fix bug in cpp_int where incrementing to zero doesn't set the sign correctly.
Remove erroneous use of std::move, and rely on NVRO instead.
Fix up support for changes to MPIR-3.0.
Fix various conversion errors in cpp_bin_float when the exponent type is a long long, or else we're converting to an integer that is wider than we are.
Fix compatibility issue with GCC-8 caused by the introduction of std::byte.
Added member function has_value() for compatibility with std::optional (issue 52).
Added member function map() for transforming optional<T> into optional<U> using a function of type T -> U.
Added member function flat_map() for transforming optional<T> into optional<U> using a function of type T -> optonal<U>.
Add support for __ARM_ARCH macro.
Add detection for PTX architecture.
Add nvcc compiler detection.
Add support for detecting CUDA.
Remove reference to obsolete BOOST_ARCH_AMD64.
Program Options:
Support for multiple long names for an option, thanks to Eyal Rozenberg
Bug fixes to correct autolink support (Windows)
Fixed undefined behavior in normalize()
Add constexpr to error_code and error_condition members under C++14 and above
Removal Notice: Boost.Signals will be removed in the next release. Boost.Signals was deprecated in version 1.54.0. Transition to Boost.Signals2 now to avoid disruption.
Fixed compilation on Solaris and other platforms that do qualify address as const in dladdr function (github 54).
Dropped dependency on Boost.LexicalCast.
Boost.test v3.8 see the Changes log for more details.
Breaking changes
The master_test_suite_t object is no more copyable
New feature:
Dataset test case can now use command line parameters
Dropped dependency on Boost.MPL.
Breaking change: sha1 detail namespace header redirection for backwards compatibility was removed
Added support for std::hash
Added support for move semantics on random generators
Properly handle EINTR when acquiring entropy
Use getrandom(2) instead of getentropy(3) on linux

Revision 1.11 / (download) - annotate - [select for diffs], Sun Apr 29 20:41:11 2018 UTC (5 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2018Q2-base, pkgsrc-2018Q2
Changes since 1.10: +3 -3 lines
Diff to previous 1.10 (colored)

boost: updated to 1.67.0

Version 1.67.0:
New Libraries:
- Contract: Contract programming for C++.
- HOF: Higher-order functions for C++.

Updated Libraries:
- Asio:
Added missing const qualifier to basic_socket_acceptor::get_option.
Worked around a parsing error that occurs with some versions of gcc.
Fixed broken code samples in tutorial.
Added new experimental features. (Note that "experimental" features may be changed without notice in subsequent releases.)
Added experimental::detached completion token.
Added experimental::redirect_error completion token.
Added experimental::co_spawn facility for integration with the coroutines technical specification.
Updated timeout examples to use latest features.
Used asio::steady_timer rather than asio::deadline_timer.
Used asio::dynamic_buffer rather than asio::streambuf.
Used timed asio::io_context::run_for() function for blocking clients.
Added example showing a custom completion token for blocking with timeouts.
Fixed unit tests to compile when BOOST_ASIO_NO_DEPRECATED is defined.
Changed socket iostreams to use chrono by default, to fix compatibility with the Networking TS. Define BOOST_ASIO_USE_BOOST_DATE_TIME_FOR_SOCKET_IOSTREAM to enable the old Boost.Date_Time interface in basic_socket_streambuf and basic_socket_iostream.
Updated examples to use chrono rather than Boost.Date_Time.
Fixed an incorrect member function detector in the is_dynamic_buffer trait.
Fixed an async_result incompatibility with deprecated handler_type.
Added a missing move optimisation in the SSL stream implementation.
Fixed incorrect basic_resolver_results::value_type typedef.
Fixed a compile error with some OpenSSL versions when SSL_OP_NO_COMPRESSION is defined.
Changed add_certificate_authority to process multiple certificates in a bundle.
Eliminated deprecation warning with MSVC by using std::invoke_result rather than std::result_of.
Changed to use std::string_view for C++17 or later, and std::experimental::string_view for C++14. Define the preprocessor macro BOOST_ASIO_DISABLE_STD_STRING_VIEW to force the use of std::experimental::string_view (assuming it is available) when compiling in C++17 mode.
Ensured DynamicBuffer template arguments are decayed before using in enable_if tests.
Changed documentation to distinguish legacy completion handlers (which are still required to be CopyConstructible) from new MoveConstructible handlers.
Suppressed a discarded return value warning in the buffer debugging support.
Fixed basic_yield_context to work with completion signatures containing reference parameters.
Ensured that stackful coroutines launched using spawn() correctly store decayed copies of their function and handler arguments.
Fixed some compatibility issues with Android.
Added cross-compilation support to Jamfiles.
Fixed some minor portability issues in examples.

- Atomic:
Breaking change: Changed the result of the (op)_and_test operations added in Boost 1.66 to the opposite - the functions now return true if the operation result is non-zero. This is consistent with other test methods in Boost.Atomic and the C++ standard library. Users can define BOOST_ATOMIC_DETAIL_HIGHLIGHT_OP_AND_TEST when compiling their code to emit warnings on every use of the changed functions. This way users can locate the code that needs to be updated.
Update for C++2a. On C++11 compilers that support scoped enums, the memory_order enumeration is now scoped and contains constants with shorter names like acquire, release or seq_cst (i.e. users can use memory_order::acquire instead of memory_order_acquire). The old constants are also provided for backward compatibility. (P0439R0)
Update for C++2a. Added experimental support for atomic operations on floating point types. In addition to general operations, add, sub, negate operations and their fetch_(op) and opaque_(op) versions are supported. Lock-free property can be tested with the new macros BOOST_ATOMIC_FLOAT/DOUBLE/LONG_DOUBLE_LOCK_FREE. The support for floating point types is optional and can be disabled by defining BOOST_ATOMIC_NO_FLOATING_POINT. (P0020R6)
Added new experimental operations:
negate_and_test and complement_and_test which perform negation or bitwise complement and return true if the result is not zero.
add, sub, negate, bitwise_and, bitwise_or, bitwise_xor, bitwise_complement operations which perform the operation and return its result.
For generic atomic<T> specialization, the default constructor is now trivial if T's default constructor is.
The internal implementation of atomic<T> has been updated to avoid undefined behavior that stems from signed integer overflows. As required by the C++ standard, the library uses two's complement representation of signed integers internally and accroding rules of overflow. Currently, the library requires the native signed integer types to also use two's complement representation (but no defined overflow semantics).
Improved Clang support. In particular, fixed DCAS not being lock-free and fixed possible incorrect code generated on 32-bit x86.
Improved MinGW support. For gcc versions up to 4.6, fixed compilation of DCAS on x86.
In x86 PIE code, asm blocks now preserve ebx value.

- Beast:
This version fixes significant defects in websocket::stream which can lead to asserts or undefined behavior. Users are encouraged to update to the latest Boost release.
For a complete list of changes, please view the official Release Notes.

- ContainerHash:
Extracted from the functional module to break a dependency cycle.
Moved headers to new location to reflect name change, the old include paths will still work.
Added support for std::string_view, std::error_code, std::error_condition, std::optional, std::variant, std::monostate where available.
Added explicit support for vector<bool>, so that it will work with libc++.
More detail in the library change log.

- Context:
fix i386/macho routines to correctly return transfer_t in EAX/EDX
__sanitizer_finish_switch_fiber should be called directly after context switch
Clang on Windows : error: No best alternative for libs/context/build/asm_sources
fixing C2492 for execution_context (v1)
known bug: including all.hpp + <context-impl>ucontext/winfib causes error 'forced_unwind: is not a member of boost::context::detail'

More info

Revision 1.10 / (download) - annotate - [select for diffs], Sun Jan 7 13:04:10 2018 UTC (6 years, 1 month ago) by rillig
Branch: MAIN
CVS Tags: pkgsrc-2018Q1-base, pkgsrc-2018Q1
Changes since 1.9: +2 -2 lines
Diff to previous 1.9 (colored)

Fix indentation in files.

The actual fix as been done by "pkglint -F */*/", and was
reviewed manually.

There are some .include lines that still are indented with zero spaces
although the surrounding .if is indented. This is existing practice.

Revision 1.9 / (download) - annotate - [select for diffs], Mon Jan 1 20:36:09 2018 UTC (6 years, 2 months ago) by adam
Branch: MAIN
Changes since 1.8: +3 -3 lines
Diff to previous 1.8 (colored)

boost: updated to 1.66.0

New Libraries
Portable HTTP, WebSocket, and network operations using only C++11 and Boost.Asio, from Vinnie Falco.

A spiritual successor to Boost.FunctionTypes, Boost.CallableTraits is a header-only C++11 library for the compile-time inspection and manipulation of all 'callable' types. Additional support for C++17 features, from Barrett Adair.

A C++11 metaprogramming library, from Peter Dimov.

Revision 1.8 / (download) - annotate - [select for diffs], Fri Aug 25 05:16:35 2017 UTC (6 years, 6 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q4-base, pkgsrc-2017Q4, pkgsrc-2017Q3-base, pkgsrc-2017Q3
Changes since 1.7: +3 -3 lines
Diff to previous 1.7 (colored)

Bump depenency

Revision 1.7 / (download) - annotate - [select for diffs], Sat Apr 29 18:31:42 2017 UTC (6 years, 10 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q2-base, pkgsrc-2017Q2
Changes since 1.6: +3 -3 lines
Diff to previous 1.6 (colored)

Changes 1.64.0:
New Libraries
Process library by Klemens D. Morgenstern, that provides cross platorm ways to allows you to:
* create child processes
* setup streams for child processes
* communicate with child processes through streams (synchronously or asynchronously)
* wait for processes to exit (synchronously or asynchronously)
* terminate processes

Revision 1.6 / (download) - annotate - [select for diffs], Sun Jan 1 16:34:48 2017 UTC (7 years, 2 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2017Q1-base, pkgsrc-2017Q1
Changes since 1.5: +3 -3 lines
Diff to previous 1.5 (colored)

For boost-1.63.0, also update

Revision 1.5 / (download) - annotate - [select for diffs], Fri Oct 7 18:32:18 2016 UTC (7 years, 4 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2016Q4-base, pkgsrc-2016Q4
Changes since 1.4: +3 -3 lines
Diff to previous 1.4 (colored)

One last piece of boost update

Revision 1.4 / (download) - annotate - [select for diffs], Fri May 13 20:47:32 2016 UTC (7 years, 9 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2016Q3-base, pkgsrc-2016Q3, pkgsrc-2016Q2-base, pkgsrc-2016Q2
Changes since 1.3: +3 -3 lines
Diff to previous 1.3 (colored)

Changes 1.61.0:
New Libraries:
  Parallel/GPU-computing library
  Library for comfortable work with DLL and DSO. Library provides a portable across platforms way to:
* load libraries
* import any native functions and variables
* make alias names for C++ mangled functions and symbols
* query libraries for sections and exported symbols
* self loading and self querying
* getting program and module location by exported symbol
  A modern C++ metaprogramming library. It provides high level algorithms to manipulate heterogeneous sequences, allows writing type-level computations with a natural syntax, provides tools to introspect user-defined types and much more.
A library for generating compile time parsers parsing embedded DSL code as part of the C++ compilation process. The library is similar to Spirit, however while parsers built with Spirit parse at run-time, parsers built with Metaparse parse at compile-time.

Revision 1.3 / (download) - annotate - [select for diffs], Sun Dec 27 12:41:42 2015 UTC (8 years, 2 months ago) by adam
Branch: MAIN
CVS Tags: pkgsrc-2016Q1-base, pkgsrc-2016Q1
Changes since 1.2: +3 -3 lines
Diff to previous 1.2 (colored)

Changes 1.60.0:
New Libraries
Variadic Macro Data library, from Edward Diener.

Updated Libraries
* Enforced proper alignment of atomic<> storage. This should fix possible issues on platforms that support atomic operations on data units larger than the native word size. This may also change binary layout of user's data structures that have atomic<> members.
* Fixed compilation for PowerPC with IBM XL C++ compiler. Corrected memory barriers in PowerPC assembler.
* Fixed compilation with MSVC-8 for ARM.
* Fixed compilation with gcc 4.4 for x86-64, when 128-bit atomic operations were used. (10994)
* Optimized some gcc assembler blocks for x86/x86-64 to reduce the number of used registers. This may require binutils 2.10 or later.

Chrono - 2.0.5:
* 10778 VC14 CTP4 Atomic don't compile with boost::chrono durations which are not TriviallyCopyable
* 10840 Missing std:: qualifier for puts call in test_7868.cpp
* 10851 Missing std:: qualifier for puts call in time_point_output.cpp
* 10893 Minor doc typo in Boost.Chrono
* 10992 Chrono IO state savers inconsistent with Boost.IO state savers
* 10995 duration_put::put_value truncates fractional part
* 11006 Impossible to instantiate time_fmt_io_saver due to several errors.
* 11012 chrono_io v2 fail to compile with boost::chrono::duration< boost::rational<int> >

* Implemented Polymorphic Memory Resources.
* Add more BOOST_ASSERT checks to test preconditions in some operations (like pop_back, pop_front, back, front, etc.)
* Added C++11 back/front operations to basic_string.
Fixed bugs:
* Trac 11627: "small_vector<T,n>::swap() appears to be broken".
* Trac 11628: "small_vector<int,n> iterates over elements in destructor".
* Trac 11697: "Wrong initialization order in tuple copy-constructor".
* Trac 11698: "Missing return statement in static_storage_allocator".
* GitHub 29: Doc fixes for flap_map complexity requirements.
* GitHub 31: DL_SIZE_IMPL also dereference addr.

* 11603 typo in PPC32/MACH-O asm
* support for CYGWIN

* In symbol demangling tools, added support for gabi++ ABI implementation used in Android NDK.
* Added a new enable_if_has_type tool for performing SFINAE checks for presence of a nested type.


Revision 1.2 / (download) - annotate - [select for diffs], Fri Aug 14 20:57:49 2015 UTC (8 years, 6 months ago) by joerg
Branch: MAIN
CVS Tags: pkgsrc-2015Q4-base, pkgsrc-2015Q4, pkgsrc-2015Q3-base, pkgsrc-2015Q3
Changes since 1.1: +3 -3 lines
Diff to previous 1.1 (colored)

Sync pattern with the package version.

Revision 1.1 / (download) - annotate - [select for diffs], Mon Jul 13 15:08:55 2015 UTC (8 years, 7 months ago) by wiz
Branch: MAIN

Rename boost-python to py-boost and make it a proper multi-version package.

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