Log Message:
boost: updated to 1.82.0

1.82.0

New Libraries
Mysql:
a C++11 client for the MySQL database server, based on Boost.Asio, from Ruben Perez.
Updated Libraries
Any:
Now uses core/enable_if.hpp header instead of the deprecated utility/enable_if.hpp.
Asio:
Added the ability to customise the execution of a completion handler when an \ 
operation completes immediately.
Added user-defined literals for buffer types.
Added a new protocol type local::seq_packet_protocol to represent AF_UNIX with \ 
SOCK_SEQPACKET.
Exposed sigaction() flags via an optional argument to signal_set::add.
Change allocator_binder, executor_binder, and cancellation_slot_binder to \ 
support detection of unspecialised associators.
Fixed ambiguity in associated_cancellation_slot<reference_wrapper>::get().
Fixed awaitable<> handling for completion signatures containing \ 
std::exception_ptr.
Fixed experimental::channel<> try_send failure after a cancel.
Fixed thread_pool::join() deadlock when the pool has no internal threads.
Fixed pipe release() when using io_uring.
Fixed data initialisation and cleanup issues in the io_uring backend.
Fixed a dangling reference issue in the execution context overload of \ 
get_associated_executor().
Ensured buffered messages can still be received when an \ 
experimental::channel<> is closed.
Fixed the any_completion_handler assignment operator.
Constrained the constructor of any_completion_handler to prevent accidental copying
Changed to use uint64_t for OpenSSL options, to match OpenSSL 3.
Fixed deferred interoperability with multiple completion signatures.
Fixed channels to add partial support for C++11 and C++14.
Added missing handler tracking source location support to co_composed and \ 
'awaitable<>' coroutines, when awaiting packaged asynchronous operations.
Fixed some 'potential null dereference' and shadow variable warnings.
Fixed a asio::buffer overload selection when used with const_buffers_1 and \ 
mutable_buffers_1.
Disabled the runtime check for current Windows version unless targeting older \ 
Windows.
Fixed compatibility between buffered stream wrappers and move-constructible \ 
streams, such as ssl::stream<>.
Fixed basic_socket_acceptor::async_accept compatibility with lambdas that have a \ 
deduced return type.
Fixed as_tuple compatibility with legacy completion tokens.
Fixed redirect_error compatibility with new completion tokens.
Fixed a potential, Windows-specific program termination due to exceptions that \ 
should have been allowed to escape from a destructor.
Prevented inadvertent co_await of boolean expressions.
Fixed result handling and support for custom allocators in experimental::use_coro.
Fixed variadic template emulation for is_async_operation and completion_signature_of.
Fixed incorrect reuse of a moved-from result in experimental::promise.
Fixed experimental::coro use with custom allocators.
Fixed seek_cur behaviour with stream-oriented files on Windows.
Various additions and modifications to the documentation.
Consult the Revision History for further details.
Atomic:
When compiled for x86 targets supporting AVX, vector instructions are now used \ 
for 128-bit atomic loads and stores.
For 32-bit x86 targets, 64-bit atomic loads and stores with memory_order_seq_cst \ 
semantics will now issue a memory ordering instruction.
Removed atomic<T>::storage() accessors and atomic<T>::storage_type \ 
types that were deprecated in Boost.Atomic 1.73. Users are recommended to use \ 
atomic<T>::value() and atomic<T>::value_type instead.
Beast:
Add error_codes use source_location
tcp_stream uses the correct executor of the timer.
error_categories use numeric ids
file_body supports seek
ContainerHash:
Added an overload of hash_value for std::nullptr_t.
Added is_tuple_like and an overload of hash_value for tuple-like types.
Changed string hashing to use mulxp1_hash. This improves both quality and speed.
Core:
Added boost/core/snprintf.hpp header with portable definitions of snprintf, \ 
vsnprintf and their wchar_t counterparts.
Deprecated boost/core/is_same.hpp and boost::core::is_same. The header will be \ 
removed in a future release. Users are advised to use Boost.TypeTraits or C++ \ 
standard library type traits instead.
Marked boost::ref member functions and associated methods with noexcept.
Marked boost::swap function with noexcept, depending on whether the type \ 
supports a non-throwing swap operation.
Added boost::core::launder, a portable implementation of std::launder.
Added BOOST_CORE_ALIGNOF, a portable implementation of alignof.
Added boost::core::max_align_t, a portable equivalent of std::max_align_t, and \ 
boost::core::max_align, the alignment of max_align_t.
Added boost::core::memory_resource, a portable equivalent of \ 
std::pmr::memory_resource from C++17.
Added boost/core/serialization.hpp, a collection of primitives allowing \ 
libraries to implement Boost.Serialization support for their types without \ 
including a Serialization header and thereby making their libraries depend on \ 
Serialization.
Added boost::data, an implementation of std::data.
Added boost::size, an implementation of std::size.
Updated boost::span to use boost::data which adds support for range construction \ 
from an std::initializer_list.
Added boost::identity, an implementation of std::identity. This facility has \ 
been moved from Boost.Functional.
DLL:
Avoid implicit cast from size_t to uint32_t
Filesystem:
Fixed compilation errors that could have been caused by path conversion \ 
constructors being too permissive on the accepted arguments.
v4: path::remove_filename now presesrves the trailing directory separator.
Added path::remove_filename_and_trailing_separators, which removes the filename \ 
and directory separators preceding it from the path. This behavior is similar to \ 
path::remove_filename in Filesystem v3, but is also usable in v4.
Added path::replace_filename, which replaces filename in a path.
Updated implementation of the library version selection to avoid ODR violations.
On Windows, added a workaround for querying file attributes for files in SMBv1 \ 
shares. Previously, directories in SMBv1 shares could have been reported as \ 
regular files. This does not affect SMBv2 or later.
Geometry:
Major improvements
Support geographic buffer for (multi)linestrings and (multi)polygons
Improvements
Comparable distance: Add support for dynamic geometries
Support covered_by() for box, geometry combinations
Solved issues
WKT: allow tabs and new lines
Fixes for union
Various fixes in examples
Breaking changes
The WKT output presentation of an empty polygon is now POLYGON() to make it \ 
consistent with other geometries
Histogram:
Replace detail::span and detail::make_span with implementations in boost::core
Documentation improvements
Protect usage of std::min and std::max in some cases, contributed by Han Jiang \ 
(min,max macros are illegially set by popular Windows headers so we need to work \ 
around)
Added test to catch usage of unprotected min,max tokens in the library in the future
Fixes to support latest clang-14 and deduction guides in gcc-11+
JSON:
set_at_pointer.
boost::hash support.
Caller-provided serializer storage.
value_to supports missing elements for std::optional.
Fix parser suspend inside an escape character.
Make sentinel() return a unique pointer.
Locale:
get_system_locale and dependents will now correctly favor LC_ALL over LC_CTYPE \ 
as defined by POSIX
utf8_codecvt::out returns partial for trailing (UTF) surrogates
Add boost::locale::util::locale_data to parse a locale
boost::locale::info::encoding() result is now in uppercase as documented, e.g. \ 
"UTF-8" instead of "utf-8"
Support M49 country codes such as en_001 or en_150
Treat en_US_POSIX as an alias for the C locale
Improve error for missing segmentation support (i.e. without ICU)
Fix compiler warnings
Math:
Deprecated C++11 support: We now require C++14 as a minimum standard. Our \ 
minimum tested compiler versions are now Clang-5, GCC-5 or MSVC-14.1.
Added Estrin's method for polynomial evaluation.
Fix various issues in non-central distributions to allow for larger \ 
non-centralities see 939.
Added CMake install target.
Fix special_functions.hpp to disable anything which can't be used in an \ 
exception-free environment.
Get condition number calculation working in C++14.
Fix constexpr table driven functions to avoid massive slowdown when the code is \ 
not actually constexpr, see 923.
Improve tanh_sinh boundary handling, see 894.
Add Linux arm64, s390x and Apple M1 testing, fix up test cases to handle 128-bit \ 
long doubles.
Improve constexpr math functions to better handle infinities and NaN's.
Make the integrators const-correct.
Fix tanh_sinh integrator in case the function underflows, see 898.
Don't use std::cbrt as some platforms still don't support it.
Stop non-central T from raising spurious FE_INVALID exceptions, see 892.
Fix binomial distribution edge case.
Improve ibeta handling of very small arguments, see 884.
Improve ibeta handling of infinities and NaN's, see 878.
Improve error handling in powm1, see 781.
Improve root-finder bracketing to bracket faster when the exponent is \ 
super-large or small.
Fix root finding edge cases, see 873.
Lots of miscellaneous warning fixes.
Add assertions when using features which require C++17 for better error messages \ 
when invoking the compiler in a lower std version.
Multi-index Containers:
Serialization now uses unsigned long instead of collection_size_type, and \ 
multi_index_container serialization class version has been bumped from 2 to 3 to \ 
reflect this change. Reading old archives may fail for custom archive types \ 
giving special treatment to collection_size_type values: if this is the case, \ 
globally define the macro \ 
BOOST_MULTI_INDEX_ENABLE_SERIALIZATION_COMPATIBILITY_V2 to ensure backwards \ 
compatibility in reading operations.
Maintenance work.
Multiprecision:
Deprecated C++11 support: We now require C++14 as a minimum standard. Our \ 
minimum tested compiler versions are now Clang-5, GCC-5 or MSVC-14.1.
Added a new forward declaration header.
Update Eigen interoperability so we no longer rely on Eigen's details, see 479.
Add Cmake install target.
Fix cpp_dec_float construction from string in standalone case for better error \ 
handling, see 499.
Remove redundent definitions when in C++17 mode, see 530.
Fix the error handling in standalone itrunc and ltrunc.
Fix potentially uninitialized storage when parsing octal strings.
Add arm64 and s390x CI testing.
Add some missing expression template unpacking code for powm, see 506.
Nowide:
Add convert_string overload accepting a (std::)string instance
Add quoted to output (quoted UTF-8) paths (std::filesystem or boost::filesystem) \ 
to streams
PFR:
Implemented the boost::pfr::is_implicitly_reflectable and the machinery for \ 
specializing aggregates as reflectable or not
Implemented boost::pfr::get by type of an element in the aggregate.
Implemented the BOOST_PFR_ENABLED macro to detect library support for reflection
Fixed missing terminating character
Fixed the boost/pfr/config.hpp compilation on older compilers
Workaround for broken C++17 stuctured binding in old compilers
Avoid -Wzero-as-null-pointer-constant warnings
Fixed multiple typos, thanks to Denis Mikhailov for the fixes.
Added missing #pragma once
Multiple fixes and improvements for the docs.
Process:
Added management for extern processes to V2 (still experimental)
Deprecated wait_for & wait_until in V1 - they will be removed in the future!
Stacktrace:
Fixed typos in docs and comments, thanks to Chocobo1 for the PR
Fixed multithreading flag detection for backtrace_create_state if \ 
BOOST_STACKTRACE_BACKTRACE_FORCE_STATIC is defined.
StaticString:
Boost.Core string_view and std::string_view interoperability
Test:
Fixed several unused variable warnings
Fixed sprintf deprecation warnings
Fixed undefined behavior in basic_cstring::rfind
Added CI through Github Actions
Unordered:
Major update.
Added node-based, open-addressing containers boost::unordered_node_map and \ 
boost::unordered_node_set.
Extended heterogeneous lookup to more member functions as specified in P2363.
Replaced the previous post-mixing process for open-addressing containers with a \ 
new algorithm based on extended multiplication by a constant.
Fixed bug in internal emplace impl where stack-local types were not properly \ 
constructed using the allocator of the container which breaks uses-allocator \ 
construction.
URL:
Add url::format with automatic percent-encoding
URL router example
set_params convenience function
Support implicit conversions to string_view
Parsing constructors are implicit
string_token::arg has virtual destructor and slice protection
Support BOOST_URL_DISABLE_THREADS
Improvements and Bug fixes:
WIN32_LEAN_AND_MEAN macro redefinition warning
Comparison differentiates absent and empty components
Detect hier_part_rule with empty-port-like segments
Segments comparison as if normalized works above root
hier-part path-rootless considers invalid segments
port as number is set to 0 when it overflows
ipv4 to string overflow detection algorithm
Variant:
Now uses core/addressof instead of the deprecated utility/addressof.