Boost C++ Libraries

...one of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

Version 1.66.0

Version 1.66.0 beta 1

November 21st, 2017 14:35 GMT

Documentation

Beta Downloads
PlatformFileSHA256 Hash
unixboost_1_66_0_b1.tar.bz25d0405eb73bd609ebcd54bbc96d4f1e2d97c51b96c4703706695ddd94f942d6b
boost_1_66_0_b1.tar.gzf0f455e39bc47b2b670a17cb221687506e9a22dc478956d3d8aabb9cb835a7dc
windowsboost_1_66_0_b1.7ze7b23e638e8c3a9da1512439385b04850829cea7bd56d8398677c096857d830b
boost_1_66_0_b1.zip694c8b9e902b7981670bce166f675f3875c19326936db51aabd98d2ddfea9b45

Third Party Downloads

New Libraries

  • Beast: Portable HTTP, WebSocket, and network operations using only C++11 and Boost.Asio, from Vinnie Falco.
  • CallableTraits: 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.
  • Mp11: A C++11 metaprogramming library, from Peter Dimov.

Updated Libraries

  • Asio:
    • Implemented interface changes to reflect the Networking TS (N4656).
      • List of changes TBD.
      • Functions and classes that have been superseded by Networking TS functionality have been deprecated.
      • The service template parameters, and the corresponding classes, are disabled by default. For example, instead of basic_socket<Protocol, SocketService> we now have simply basic_socket<Protocol>. The old interface can be enabled by defining the BOOST_ASIO_ENABLE_OLD_SERVICES macro.
    • Removed previously deprecated functions.
    • Added support for customised handler tracking.
    • Added reactor-related (i.e. descriptor readiness) events to handler tracking.
    • Added special "concurrency hint" values that may be used to disable locking on a per io_context basis.
    • Enabled perfect forwarding for the first ssl::stream<> constructor argument.
    • Added ability to release ownership of the underlying native socket. (Requires Windows 8.1 or later when using the I/O completion port backend.)
  • Atomic:
    • Implemented a set of experimental extended atomic operations for integral types:
      • fetch_negate, fetch_complement - atomically replaces the value with a negated or binary complemented value and returns the original value
      • opaque_<op> - equivalent to fetch_<op> except that it doesn't return the original value
      • <op>_and_test - atomically applies <op> and returns true if the result is zero
      • bit_test_and_set, bit_test_and_reset, bit_test_and_complement - atomically sets, resets or complements the specified bit and returns the original value of the bit
    • Following C++17 (P0558R1), arithmetic operations for pointers to non-object types are no longer provided.
    • Also following C++17 exposed atomic<T>::value_type and atomic<T>::difference_type member typedefs, where applicable, to the user's code.
    • Improved compatibility with gcc 7. In particular, using 128-bit operations on x86-64 should no longer require linking with libatomic (the compiler-supplied library).
  • DateTime:
    • The library has been converted to use Boost.WinAPI as the abstraction layer for Windows SDK.
    • Fixed an integral overflow that could cause incorrect results when adding or subtracting many years from a date (see here).
  • Fiber:
    • synchronization with CUDA streams
    • synchronization with ROCm/HIP streams
  • Format:
    • Improvements:
      • Accept new conversion specifiers:
        • a: sets flags fixed | scientific (i.e. hexfloat)
        • b: sets flag boolalpha
        • A: same as a plus flag uppercase
        • F: same as f plus flag uppercase
      • 42 Accept new argument types j and z from ISO C99 (parsed and ignored like all others).
      • 44 Accept new argument types I, I32, I64, and w from Microsoft (parsed and ignored like all others).
      • 33 Added a development tool called format_matrix that exercises as many different combinations of format strings as possible and logs them to a file:
        • helps prevent regressions in between boost releases
        • allows for comparison against snprintf
    • Bugfixes:
      • 36 Safely allow volatile arguments to be used with operator%
      • 4636 Explicit clamping provided to allow MSVC /RTCc to succeed
      • 7477 Fix compatibility with MSVC /Za
      • 10324 Const-correct cast issue resolved
      • 11632 Fix -fsanitize=undefined issue in alt_sstream.hpp
  • Fusion:
    • PR#149 isspace(c) is not a macro in Dinkum clib for VxWorks, thanks to Brian Kuhl(@kuhlenough).
    • PR#150 Remove circular preprocessor include, thanks to Gregor Jasny(@gjasny).
    • PR#151 Change base of fusion::tuple.
    • PR#153 Fixed compile error with std::array.
    • PR#154 Fixed bugs nesting and copying on c++03.
  • Iterator:
    • next()/prior() functions now support user's iterators that don't specify nested types such as iterator_category, difference_type, etc. and instead specialize std::iterator_traits to define those types. The compiler must support C++17-compatible std::iterator_traits for this to work.
  • Log:
    • Bug fixes:
      • Fixed a bug in file_collector::scan_for_files that could cause incorrectly named log files in the target directory after the user's application restart.
    • See changelog for more details.
  • Math:
    • New Features:
      • Add Gauss and Gauss-Kronrod quadrature routines.
      • Add double-exponential (tanh-sinh, exp-sinh and sinh-sinh) quadrature routines.
      • Add Chebyshev polynomial evaluation, roots, integration, differentiation, and interpolation routines.
  • Multi-index Containers:
    • Made modify and modify_key more robust so that the modified element is erased if the modifier throws or the rollback functor does not properly restore the element (full discussion at ticket #12542). This is technically backwards incompatible; for instance, the following code:
      c.modify(c.begin(),[](auto&){throw 0;});
      
      keeps the container c untouched in former versions of Boost whereas now c.begin() is erased. Thanks to Jon Kalb for raising the issue.
    • Maintenance fixes.
  • Optional:
    • On newer compilers optional is now trivially-copyable for scalar Ts. This uses a different storage (just T rather than aligned_storage). We require the compiler to support defaulted functions.
    • Changed the implementation of operator== to get rid of the -Wmaybe-uninitialized false-positive warning from GCC.
  • PolyCollection:
    • Boost.PolyCollection has been backported to GCC 4.8 to 4.9 and Clang 3.3 to 3.6. The version of libstdc++-v3 shipped with GCC 4.8 (which can also be used by Clang) has deficiencies that result in the following limitations when using Boost.PolyCollection:
      • Stateful allocators are not properly supported.
      • Allocator-extended move construction decays to allocator-extended copy construction.
      • Copy construction crashes if an exception is thrown during element copying.
    • Maintenance fixes.
  • Predef:
    • Improved Windows Universal Platform detection. (from James E. King, III)
    • Add detection for CloudABI with cloudlibc. (from James E. King, III)
    • Various other bug fixes.
  • Regex:
    • Bug fixes:
      • Numerous small fixes for security issues discovered by de-fuzzing.
  • Stacktrace:
    • Now works out-of-the-box on MinGW-w64.
    • Now works on MinGW (without -w64) if libbacktrace is properly installed. See "MinGW specific notes" section in documentation for more info.
  • Thread:
    • Bugs Fixes
      • #12323 windows - boost/thread/win32/mfc_thread_init.hpp has wrong signature for _pRawDllMainOrig
      • #12730 windows - static threads library is incompatible with MSVC 2017 RC
      • #12976 Boost Thread Executors documentation mistakes
      • #12949 using sleep_for in a thread context without including boost/thread/thread.hpp yields incorrect behaviour when BOOST_THREAD_HAS_CONDATTR_SET_CLOCK_MONOTONIC is defined
      • #13019 ABI compatibility for BOOST_THREAD_PROVIDES_INTERRUPTIONS incomplete
      • #13069 Boost unit test "sync_pq_multi_thread_p_lib.exe" hung in thread library
      • #13163 boost::detail::heap_new does not have a variadic variant
      • #13226 getpagesize() is deprecated since 199506L
      • #132 VS 2017.4 Preview deadlocks on Test 10964
      • #133 windows - Spurious timing test failures on windows
      • #134 VS 2017.4 Preview deadlock in sync_pq_multi_thread_p_lib.exe
      • #135 VS 2017.4 Preview test_scheduled_tp_p.exe deadlock
      • #136 VS 2017.4 Preview test_scheduler_p.exe deadlock
      • #137 VS 2017.4 Preview executor_ex.exe deadlock
      • #143 Failures on msvc-12.0
      • #145 Clang build error with BOOST_THREAD_ATTRIBUTE_MAY_ALIAS
    • New Experimental Feature
      • #116 [Proposal] Add APIs for deferred set_value/exception
  • Utility:
    • boost/next_prior.hpp has been moved to Boost.Iterator. No changes needed to the user's code.
  • Uuid:
    • Improvements:
      • 26 Refactored name_generator to support a configurable hash provider concept and provide an optional MD5 hash implementation per RFC-4122. This will make it easier to support whatever becomes the next standard hash algorithm.
      • 34 Added RFC-4122 namespaces in boost::uuids::ns.
    • Bugfixes:
      • 8630 11482 12253 Various deficiencies in string_generator were resolved.
      • 10665 name_generator::operator() is now const, matching docs.
      • Detail headers were moved into the detail subdirectory. No changes needed to user's code, however you may get build warnings if you use the old header location.
  • Variant:
    • boost::apply_visitor now does perfect forwarding of visitables #6971. Great thanks to Levon Tarakchyan for implementing this feature.

Compilers Tested

Boost's primary test compilers are:

  • Linux:
    • Clang: 3.0, 4.0.1, 5.0.1
    • Clang, C++0x: 3.0
    • Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 5.0.1
    • Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.1
    • Clang, C++17: 5.0.1
    • GCC: 4.4.7, 4.5.3, 4.6.3, 4.7.2, 5.4.0, 7.2.0
    • GCC, C++0x: 4.4.7
    • GCC, C++11: 4.7.2, 4.7.3, 4.8.5, 4.9.4, 6.4.0, 7.1.0, 7.2.0
    • GCC, C++14: 5.4.1, 6.3.0, 6.4.0, 7.1.0, 7.2.0, 7.2.1
    • GCC, C++17: 7.2.0
    • Intel: 18.0
  • OS X:
    • Clang: 9.0.0
    • Clang, C++11: 9.0.0
    • Clang, C++14: 9.0.0
    • Clang, C++1z: 9.0.0
  • Windows:
    • GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
    • GCC, C++0x: 4.6.4
    • GCC, C++11: 4.7.3
    • Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
  • Android:
    • Clang: 3.6, 3.7, 3.8
    • GCC: 4.9, 5.4
    • GCC, C++14: 6.2
  • FreeBSD:
    • Clang: 4.0.0
    • Clang, C++11: 4.0.0
    • Clang, C++14: 4.0.0
    • Clang, C++1z: 4.0.0
  • QNX:
    • QCC, C++0x: 4.4.2
    • QCC, C++11: 4.7.3

Boost's additional test compilers include:

  • Linux:
    • Clang: 3.0, 3.8.1, 4.0.1, 5.0.1
    • Clang, C++0x: 3.0
    • Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 5.0.1
    • Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.1
    • Clang, C++17: 5.0.1
    • GCC: 4.4.7, 4.5.3, 4.6.3, 4.7.2, 5.4.0, 7.2.0
    • GCC, C++0x: 4.4.7
    • GCC, C++11: 4.7.2, 4.7.3, 4.8.5, 4.9.4, 5.4.0, 6.4.0, 7.1.0, 7.2.0
    • GCC, C++14: 5.4.1, 6.3.0, 6.4.0, 7.1.0, 7.2.0, 7.2.1, 8.0.0
    • GCC, C++17: 7.2.0
    • Intel: 18.0
  • OS X:
    • Clang: 9.0.0
    • Clang, C++11: 9.0.0
    • Clang, C++14: 9.0.0
    • Clang, C++1z: 9.0.0
  • Windows:
    • GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
    • GCC, C++0x: 4.6.4
    • GCC, C++11: 4.7.3, 4.8.1, 4.9.3
    • GCC, C++14: 5.1.0, 5.2.0, 5.3.0, 6.1.0, 6.2.0, 6.3.0, 6.4.0, 7.1.0
    • Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
  • Android:
    • Clang: 3.6, 3.7, 3.8
    • GCC: 4.9, 5.4
    • GCC, C++14: 6.2
  • FreeBSD:
    • Clang: 4.0.0
    • Clang, C++11: 4.0.0
    • Clang, C++14: 4.0.0
    • Clang, C++1z: 4.0.0
  • QNX:
    • QCC, C++0x: 4.4.2
    • QCC, C++11: 4.7.3

Acknowledgements

Beman Dawes, Daniel James, Vladimir Prus and Marshall Clow managed this release.