Release notes for work in progress boost

Version 1.54.0

In Progress

News

Boost no longer supports the 80386 target CPU, the minimum x86 32-bit target is i486. The 80386 target was not properly supported by Boost.SmartPtr and Boost.Atomic (as well as the libraries that used them internally) even before this release. Some Boost libraries may have higher requirements on the minimum target CPU (like Boost.Log for example), see the respective library documentation for details.

Also by default, when building Boost for x86 32-bit targets it will compile for i686 (Pentium Pro) and later CPUs. This can be changed by specifying the instruction-set property in b2 or bjam command line, for example:

b2 variant=release architecture=x86 instruction-set=i486 stage

Possible values for the instruction-set are:

Target for the host CPU: native
Generic x86 CPUs: i486, i586, i686
Intel CPUs: pentium, pentium-mmx, pentiumpro, pentium2, pentium3, pentium3m, pentium-m, pentium4, pentium4m, prescott, nocona, core2, corei7, corei7-avx, core-avx-i, conroe, conroe-xe, conroe-l, allendale, merom, merom-xe, kentsfield, kentsfield-xe, penryn, wolfdale, yorksfield, nehalem, sandy-bridge, ivy-bridge, haswell, atom
AMD CPUs: k6, k6-2, k6-3, athlon, athlon-tbird, athlon-4, athlon-xp, athlon-mp, k8, opteron, athlon64, athlon-fx, k8-sse3, opteron-sse3, athlon64-sse3, amdfam10, barcelona, bdver1, bdver2, bdver3, btver1, btver2
VIA CPUs: c3, c3-2
IDT CPUs: winchip-c6, winchip2

Note that not all these values may be supported by a particular compiler.

New Libraries

Log: Logging library, from Andrey Semashev.
TTI: Type Traits Introspection library, from Edward Diener.
Type Erasure: Runtime polymorphism based on concepts.

Updated Libraries

Accumulators:
- Fixes comment typos (#7917)
- Silence unused variable warnings (#6926)
Algorithm:
- The return types for copy_while and copy_until have been changed. This is an interface change. If you were using the return values from these functions, then you will have to modify your code. Instead of just returning the modified OutputIterator, these functions now return a std::pair<InputIterator, OutputIterator>. If this change affects your code, the simplest change is to add a .second to the end of the call, which will get you the same behavior that you had before.
- Added C++14 versions of 'is_permutation', 'equal' and 'mismatch'.
Any:
- Added C++11 features support #6999:
  - Move assignment and move constructors.
  - Added noexcept modifiers.
Asio:
- Added new traits classes, handler_type and async_result, that allow the customisation of the return type of an initiating function.
- Added the asio::spawn() function, a high-level wrapper for running stackful coroutines, based on the Boost.Coroutine library. The spawn() function enables programs to implement asynchronous logic in a synchronous manner. For example: size_t n = my_socket.async_read_some(my_buffer, yield);.
- Added the asio::use_future special value, which provides first-class support for returning a C++11 std::future from an asynchronous operation's initiating function. For example: future<size_t> n = my_socket.async_read_some(my_buffer, asio::use_future);.
- Promoted the stackless coroutine class and macros to be part of Asio's documented interface, rather than part of the HTTP server 4 example.
- Added a new handler hook called asio_handler_is_continuation. Asynchronous operations may represent a continuation of the asynchronous control flow associated with the current executing handler. The asio_handler_is_continuation hook can be customised to return true if this is the case, and Asio's implementation can use this knowledge to optimise scheduling of the new handler. To cover common cases, Asio customises the hook for strands, spawn() and composed asynchronous operations.
- Added four new generic protocol classes, generic::datagram_protocol, generic::raw_protocol, generic::seq_packet_protocol and generic::stream_protocol, which implement the Protocol type requirements, but allow the user to specify the address family (e.g. AF_INET) and protocol type (e.g. IPPROTO_TCP) at runtime.
- Added C++11 move constructors that allow the conversion of a socket (or acceptor) into a more generic type. For example, an ip::tcp::socket can be converted into a generic::stream_protocol::socket via move construction.
- Extended the basic_socket_acceptor<> class's accept() and async_accept() functions to allow a new connection to be accepted directly into a socket of a more generic type. For example, an ip::tcp::acceptor can be used to accept into a generic::stream_protocol::socket object.
- Moved existing examples into a C++03-specific directory, and added a new directory for C++11-specific examples. A limited subset of the C++03 examples have been converted to their C++11 equivalents.
- Various SSL enhancements. Thanks go to Nick Jones, on whose work these changes are based.
  - Added support for SSL handshakes with re-use of data already read from the wire. New overloads of the ssl::stream<> class's handshake() and async_handshake() functions have been added. These accept a ConstBufferSequence to be used as initial input to the ssl engine for the handshake procedure.
  - Added support for creation of TLSv1.1 and TLSv1.2 ssl::context objects.
  - Added a set_verify_depth() function to the ssl::context and ssl::stream<> classes.
  - Added the ability to load SSL certificate and key data from memory buffers. New functions, add_certificate_authority(), use_certificate(), use_certificate_chain(), use_private_key(), use_rsa_private_key() and use_tmp_dh(), have been added to the ssl::context class.
  - Changed ssl::context to automatically disable SSL compression by default. To enable, use the new ssl::context::clear_options() function, as in my_context.clear_options(ssl::context::no_compression).
- Fixed a potential deadlock in signal_set implementation.
- Fixed an error in acceptor example in documentation #8421.
- Fixed copy-paste errors in waitable timer documentation #8602.
- Added assertions to satisfy some code analysis tools #7739.
- Fixed a malformed #warning directive #7939.
- Fixed a potential data race in the Linux epoll implementation.
- Fixed a Windows-specific bug, where certain operations might generate an error_code with an invalid (i.e. NULL) error_category #8613.
- Fixed basic_waitable_timer's underlying implementation so that it can handle any time_point value without overflowing the intermediate duration objects.
- Fixed a problem with lost thread wakeups that can occur when making concurrent calls to run() and poll() on the same io_service object #8354.
- Fixed implementation of asynchronous connect operation so that it can cope with spurious readiness notifications from the reactor #7961.
Chrono:
- Fixed Bugs:
  - #8079 Chrono memory leak
  - #8318 BOOST_FORCEINLINE constructors of time_point and duration
  - #8367 chrono does not compile with clang from XCode 4.5.2 with -std=c++11 -stdlib=libc++ and -arch armv7
  - #8370 typo in chrono reference
  - #8435 Can't compile Chrono on HP-UX due to no CLOCK_REALTIME macro.
Circular Buffer:
- Fixed warnings (#8032).
Container:
- Speed improvements in vector constructors/copy/move/swap, dispatching to memcpy when possible.
- Support for BOOST_NO_EXCEPTIONS #7227.
- Fixed bugs #7921, #7969, #8118, #8294, #8553.
- Added experimental static_vector class.
Context:
- Support for SPARC architecture added.
Coroutine:
- Support for segmented stacks (stack grows on demand) added.
- #7805 Typo
- #7972 GCC warnings
- #7988 C++11 range-for
- #8023 Using iterator traits
- #8024 Create const_iterator
- #8101 Postfix operator++ for iterator
- #8526 memory leak
- #8544 calling managed DLL
Geometry:
- Additional functionality
  - added Spatial Index, developed for Boost.Geometry by Adam Wulkiewicz. The spatial index was originally started by Federico J. Fernandez during the Google Summer of Code 2008 program, mentored by Hartmut Kaiser.
  - added SVG-output, this was already in extensions for several years
- Documentation
  - small fixes of missing words
- Bugfixes
  - collinear opposite segments did sometimes (in circles) have a robustness issue, fixed
  - fixed insertion of false intersection point (found by buffer)
  - applied patch of Vladimir Petrovic for debugging traversals
- Solved tickets
  - 7462 degenerate union result for float, fixed
  - 7465 wrong construtors access type in scale_transformer class, fixed
  - 7802 cart_intersect.hpp unused parameter warnings, fixed
  - 8254 faulty intersection, fixed
  - 8393 polygon model doesn't adhere to stated Polygon concept rules, doc updated.
  - 8403 silenced compiler warning C4127: conditional expression is constant
  - 8405 silenced compiler warning C4189: '...' : local variable is initialized but not referenced
- Internal changes
  - Made several algorithms variant-aware (append, area, clear, convert, equals, length, num_points)
Graph:
- Bugs fixed from Trac: #6780, #7016, #7155, #7845, #7863, #7877, #8166, #8192, #8398, #8411, #8427, #8428, #8434, #8490.
- Added updates to VF2 subgraph isomorphism from Jakob Lykke Andersen and Flavio De Lorenzi.
- Added maximum adjacency search from Fernando Vilas.
- Added timeout support from Brammert Ottens to resource-constrained shortest paths (r_c_shortest_paths) algorithm.
- Various fixes to documentation and examples and removal of outdated compiler workarounds.
Interprocess:
- Added support for platform-specific flags to mapped_region (ticket #8030)
- Fixed bugs #7484, #7598, #7682, #7923, #7924, #7928, #7936, #8521, #8595.
- ABI breaking: Changed bootstamp function in Windows to use EventLog service start time as system bootup time. Previously used LastBootupTime from WMI was unstable with time synchronization and hibernation and unusable in practice. If you really need to obtain pre Boost 1.54 behaviour define BOOST_INTERPROCESS_BOOTSTAMP_IS_LASTBOOTUPTIME from command line or detail/workaround.hpp.
Intrusive:
- Added BOOST_NO_EXCEPTIONS support (bug #7849).
Iostreams:
- tee now works correctly for std::streams (#8315).
- Documentation fixes (#8385, #8460).
- Avoid warning from Clang's -Wimplicit-fallthrough (#8482).
Lexical cast:
- Converting to character pointer now triggers compile time assert instead of runtime #8334.
- Lexical cast is now capable of converting boost::int128_type and boost::uint128_type #7909.
- Changed internal stream buffer handling, now works with libc++ #8267, #7704.
- Restored getting address of lexical_cast function that was broken in 1.53.0 #7421.
- Fixed warnings, internals and tests #2558, #7949, #8162, #8369, #8547.
Math:
- Major reorganization to incorporate other Boost.Math like Integer Utilities (Greatest Common Divisor and Least Common Multiple), quaternions and octonions. Making new chapter headings.
- Added many references to Boost.Multiprecision and cpp_dec_float_50 as an example of a User-defined Type (UDT).
- Added Clang to list of supported compilers.
- Fixed constants to use a thread-safe cache of computed values when used at arbitrary precision.
- Added finding zeros of Bessel functions cyl_bessel_j_zero, cyl_neumann_zero, airy_ai_zeros and airy_bi_zeros(by Christopher Kormanyos).
- More accuracy improvements to the Bessel J and Y functions from Rocco Romeo.
- Fixed nasty cyclic dependency bug that caused some headers to not compile #7999.
- Fixed bug in __tgamma that caused spurious overflow for arguments between 142.5 and 143.
- Fixed bug in raise_rounding_error that caused it to return an incorrect result when throwing an exception is turned off #7905.
- Added minimal __float128 support.
- Fixed bug in edge-cases of poisson quantile #8308.
- Adjusted heuristics used in Halley iteration to cope with inverting the incomplete beta in tricky regions where the derivative is flatlining. Example is computing the quantile of the Fisher F distribution for probabilities smaller than machine epsilon. See ticket #8314.
Move:
- Fixed bugs #7969), #8231).
Multiprecision:
- Breaking change renamed rational_adapter to rational_adaptor.
- Add support for MPFI.
- Add logged_adaptor.
- Add support for 128-bit floats via GCC's __float128 or Intel's _Quad data types.
- Add support for user-defined literals in cpp_int, improve constexpr support.
- Fixed bug in integer division of cpp_int that results in incorrect sign of cpp_int when both arguments are small enough to fit in a double_limb_type. See 8126.
- Fixed bug in subtraction of a single limb in cpp_int that results in incorrect value when the result should have a 0 in the last limb: 8133.
- Fixed bug in cpp_int where division of 0 by something doesn't get zero in the result: 8160.
- Fixed bug in some transcendental functions that caused incorrect return values when variables are reused, for example with a = pow(a, b). See 8326.
Polygon:
- Updates and fixes to the Voronoi documentation.
- Bugs fixed from Trac: #8026, #8197, #8257.
PropertyMap:
- Added compose_property_map from Guillaume Pinot.
Thread:
- New Features:
  - #7285 C++11 compliance: Allow to pass movable arguments for call_once.
  - #7445 Async: Add future<>.then
  - #7449 Synchro: Add a synchronized value class
- Fixed Bugs:
  - #4878 MinGW 4.5.0 undefined reference to bool interruptible_wait(detail::win32::handle handle_to_wait_for,detail::t imeout target_time).
  - #4882 Win32 shared_mutex does not handle timeouts correctly.
  - #5752 boost::call_once() is unreliable on some platforms
  - #6652 Boost.Thread shared_mutex.hpp:50:99: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
  - #6843 [Intel C++] Compile Errors with '#include <atomic>'
  - #6966 future boost::future_category inconsistent dll linkage
  - #7720 exception lock_error while intensive locking/unlocking of mutex
  - #7755 Thread: deadlock with shared_mutex on Windows
  - #7980 Build error: msvc-11.0 and BOOST_THREAD_DONT_USE_DATETIME
  - #7982 pthread_delay_np() parm compile error on AIX
  - #8027 thread library fails to compile with Visual Studio 2003
  - #8070 prefer GetTickCount64 over GetTickCount
  - #8136 boost::this_thread::sleep_for() sleeps longer than it should in Windows
  - #8212 Boost thread compilation error on Solaris 10
  - #8237 fix documentation for 'thread_group'
  - #8239 barrier::wait() not marked as interruption_point
  - #8323 boost::thread::try_join_for/try_join_until may block indefinitely due to a combination of problems in Boost.Thread and Boost.Chrono
  - #8337 The internal representation of "std::string(this->code()->message())" escapes, but is destroyed when it exits scope.
  - #8371 C++11 once_flag enabled when constexpr is not available
  - #8443 Header file inclusion order may cause crashes
  - #8451 Missing documented function 'boost::scoped_thread::joinable'
  - #8530 [Coverity] Unused variable thread_handle, uninitialized variable cond_mutex in thread/pthread/thread_data.hpp
  - #8596 With C++0x enabled, boost::packaged_task stores a reference to function objects, instead of a copy.
Type Traits:
- New type traits implemented #8189:
  - is_nothrow_move_constructible
  - is_nothrow_move_assignable
  - has_trivial_move_assign
  - has_trivial_move_constructor
Unordered:
- Some very basic noexcept support.
Utility:
- Fix basic_string_ref::find (#8067).
- Fix string_ref's logical operators.
- Update noncopyable for C++11 (#6578).
- Fix noncopyable compiler warning when used in DLL interface (#6935).
- Fix using boost::addressof with boost::function on SolarisStudio compiler (#7079).
- Disable annoying MSVC warning about operator comma (#7663)
Variant:
- Now uses new type traits from Boost.TypeTrait to detect noexcept constructors and assignment operators #8296. This shall increase performance of boost::variant for many types in C++11.
- Multivisitation implemented #8459.
- Documentation updated to reflect C++11 features support.
Wave:
- See the Changelog for details.
xpressive:
- Remove unused variables, fixes #8039
- Avoid name clash with macro None in glx.h, fixes #8204
- Silence a gcc warning, fixes #8138

Post Beta Changes

TODO: Add to main release notes before final release.

uBLAS:
- #6511 Division by scalar should use enable_if<>
- #7297 Make the free functions 'num_columns' and 'num_rows' support the uBLAS traits system and better work with expression types
- #6010 fixed linkage problems in assignment.hpp
- updated doc

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 4.4.7, 4.5.3, 4.6.2, 4.6.3, 4.7.3
- GCC, C++98 mode: 4.7.3
- GCC, C++11 mode: 4.7.2, 4.7.3, 4.8.0
- Clang: 3.0, 3.1, 3.2
- Clang, C++11 mode: 3.2
OS X:
- GCC: 4.2
- Apple Clang: 4.2.1
- Apple Clang, C++11 mode: 4.2.1
Windows:
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.3, 4.7.2, 4.8.0
- Visual C++: 8.0, 9.0, 10.0, 11.0
FreeBSD:
- GCC: 4.2.1

Boost's additional test compilers include:

Linux:
- Clang: 3.0, 3.1, 3.2, from Subversion
- Clang, with libc++: 3.2
- GCC: 4.4.7, 4.5.3, 4.6.2, 4.6.3, 4.7.2, 4.7.3
- GCC, C++98 mode: 4.7.3
- GCC, C++11 mode: 4.7.3, 4.8.0
OS X:
- Apple Clang: 4.2.1
- Apple Clang, C++11 mode: 4.2.1
- Clang: from Subversion
- Clang, C++11 mode: from Subversion
- GCC: 4.2
Windows:
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.3, 4.7.2, 4.8.0
- Visual C++: 9.0, 10.0, 11.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
AIX:
- IBM XL C/C++ Enterprise Edition: 12.1.0.1
FreeBSD:
- GCC: 4.2.1

Acknowledgements

Beman Dawes, Eric Niebler, Rene Rivera, Daniel James, Vladimir Prus and Marshall Clow managed this release.

Version 1.53.0

Mon, 4 Feb 2013 10:29:19 -0800

New Libraries

Atomic: C++11-style atomic<>, from Helge Bahmann, maintained by Tim Blechmann.
Coroutine: Coroutine library, from Oliver Kowalke.
Lockfree: Lockfree data structures, from Tim Blechmann.
Multiprecision: Extended precision arithmetic types for floating point, integer and rational arithmetic from John Maddock and Christopher Kormanyos.
Odeint: Solving ordinary differential equations, from Karsten Ahnert and Mario Mulansky.

News

This release contains a fix for ticket #7743, in Boost.Locale. For more details, see the security notice.

Updated Libraries

Algorithm:
- Fixed non-ASCII char in comment (#7781).
- Updated the Knuth-Morris-Pratt docs (#7656).
Array:
- Added support for boost::get and std::get (#7652)
Asio:
- Fixed some 64-to-32-bit conversion warnings (#7459).
- Fixed some small errors in documentation and comments (#7761).
- Fixed an error in the example embedded in basic_socket::get_option's documentation (#7562).
- Changed to use long rather than int for SSL_CTX options, to match OpenSSL (#7209).
- Changed to use _snwprintf to address a compile error due to the changed swprintf signature in recent versions of MinGW (#7373).
- Fixed a deadlock that can occur on Windows when shutting down a pool of io_service threads due to running out of work (#7552).
- Enabled the noexcept qualifier for error categories (#7797).
- Changed UNIX domain socket example to treat errors from accept as non-fatal (#7488).
- Added a small block recycling optimisation to improve default memory allocation behaviour.
Bimap:
- Refactor map_view_iterator to improve error messages.
- Fixed replace_(left/right/key/data) bug when using relations with info.
- Fixed vector_of and list_of views assign(size_type,value_type) bug.
- Fixed vector_of views operator[](size_type) and at(size_type) functions return value.
Chrono:
- Deprecated:
  - The chrono i/o version included in Boost.Chrono 1.2.x has been completly refactored in version 2.0.0
  - chrono I/O: The manipulators __duration_short, __duration_long are depreceated. You should use the parameterized form __duration_fmt or the renamed manipulators __duration_symbol and __duration_prefix instead.
  - chrono I/O: The __duration_punct<> facet is depreceated. You should use the __get_duration_style free function to get the informations and use the __duration_units facet for localization purposes.
  - When BOOST_CHRONO_VERSION==2 the preceding deprecated functions are not available.
- Fixes:
  - #7546 time_point<system_clock> output version 2 fails to compile
  - #7547 time_point<system_clock> input version 2 fails to compile
  - #7868 chrono_io parses time incorrectly (1.53 and 1.52)
Container:
- Fixed bug #7650.
- Improved vector's insertion performance.
- Changed again experimental multiallocation interface for better performance (still experimental).
- Added no exception support for those willing to disable exceptions in their compilers.
- Fixed GCC -Wshadow warnings.
- Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
Context:
- Support for iOS on ARM and MacOS X on x86 (32bit) added.
- Support for SEH Overwrite Protection on Win32.
Geometry:
- Bugfixes
  - avoid generating output polygons with interior rings below minimum size (e.g. one or two points)
  - geometry::disjoint for degenerate segments (patched by Karsten Ahnert)
  - problem in geometry::difference for missing handling tangency, reported by H2
  - fixed geometry::for_each for use with Lambda's
  - fixed geometry::comparable_distance point-linestring (and -range, -polygon)
- Additional functionality
  - combinations for geometry::disjoint: point/ring, point/polygon, point/multi_polygon
  - combinations for geometry::intersects: point/ring, point/polygon, point/multi_polygon
- Internal changes
  - updates in specializations/not_implemented for various algorithms (as in an earlier version, these changes are still going on; they take care for simplified structs, better error reporting, and automatized documentation)
  - fixes in unit tests
GIL:
- Fixed self-assignment warnings (#4919).
Graph:
- Fixed the following bugs from Trac: #3468, #4386, #5269, #7428, #7457, #7467, #7600, #7648, #7684, #7728, #7741, #7766, #7771, #7773, #7780, #7787, #7801 plus other bugs not in Trac.
- Added support for reading from GraphML files containing multiple graphs.
- Added versions of A* search specifically for trees, removing the need for a color map when it is acceptable to visit the same vertex multiple times.
- Added VF2 subgraph isomorphism algorithm (contributed by Flavio De Lorenzi).
Hash:
- Add support for boost::int128_type and boost::uint128_type where available.
- On platforms that are known to have standard floating point functions, don't use the automatic detection (#7221, #7470).
Interprocess:
- Fixed GCC -Wshadow warnings.
- Experimental multiple allocation interface improved and changed again. Still unstable.
- Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
- ABI breaking: changed node pool allocators internals for improved efficiency.
- Fixed bug #7795.
Intrusive:
- Fixed bugs #7174, #7529, #7815.
- Fixed GCC -Wshadow warnings.
- Added missing explicit keyword in several intrusive container constructors.
- Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
- Small documentation fixes.
Lexical cast:
- New character type detection algorithm for user defined types #6786.
- Documentation updates (#7582, #7831).
- Fixed bugs with std::array #7799.
- Fixed compilation with -ftrapv and numeric to numeric conversions #7814.
Locale:
- Security related bug fix, some invalid UTF-8 sequences where accepted as valid #7743
- Invalid Windows codepage names used #7386
- Fixed missing documentation, caused by a error in Doxygen formatting #7734
- Fixed missing std:: in some places #7701
- Spelling, grammar, typos fixes #7368, #7762
Math:
- Fixed issues #7325, #7415, #7416, #7183, #7649, #7694, #4445 and #7492.
- Fixed mistake in calculating pooled standard deviation in two-sample students t example #7402.
- Improve complex acos/asin/atan, see #7290, #7291.
- Improve accuracy in some corner cases of cyl_bessel_j and gamma_p/gamma_q thanks to suggestions from Rocco Romeo.
- Improve accuracy in Bessel J and Y with integer orders thanks to suggestions from Rocco Romeo.
MinMax:
- Fixed a misuse of the comma operator (#7752).
- Updated the docs to fix broken link (#7751).
Move:
- Better header segregation (bug #6524).
- Small documentation fixes
- Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
- Fixed #7830, #7832.
Polygon:
- Fixes:
  - #6366 Bug in boost::polygon::contains for polygon_90 type.
  - #7678 multiple definitions of bool boost::polygon::belongs(...) by multiple #include.
- Internal changes:
  - refactored point/segment/interval data/concept/traits.
  - added unit tests for point and interval data/concept/traits.
  - simplified transform.hpp to operate only in 2D.
  - removed point_3d data/concept/traits.
Random:
- Now compiles with exceptions disabled (#5399).
Range:
- Bug fixes:
  - #5603 the "range/any_range.hpp" header is not self-sufficient
  - #6103 boost::range_detail vs. boost::range::range_detail compiler error
- Documentation fixes:
  - #5160
  - #5314
  - #5440
  - #5775
  - #6212
  - #7585
  - #7843
  - #7916
  - #7926
Ratio:
- Fixes:
  - #7616 br_mul::nan - warning C4293: '<<' : shift count negative or too big, undefined behavior`.
Regex: Fixed Issues: #7744, #7644.
Smart Pointers:
- New Features:
  - Glen Fernandes provided implementations of make_shared and allocate_shared for arrays. They achieve a single allocation for an array that can be initialized with constructor arguments or initializer lists as well as overloads for default initialization and no value initialization. See the 'make_shared and allocate_shared for arrays' page for more information.
  - shared_ptr can now be used to hold a pointer to a dynamically allocated array. This is accomplished by using an array type (T[] or T[N]) as the template parameter.
  - Smart pointers now use explicit operator bool on C++11 compilers. This can break code that passes a smart pointer to a function taking a bool, or that returns a smart pointer from a function with a bool return type. Please use p != 0 or !!p in such cases.
StringAlgo:
- Fixed a bug where it wouldn't find overlapping patterns (#7784).
- Disambiguated some calls to insert (#7346).
Thread:
- Deprecated features:
  - Deprecated features since boost 1.53 will be available only until boost 1.58.
  - C++11 compliance: packaged_task<R> is deprecated, use instead packaged_task<R()>.
  - #7537 deprecate Mutex::scoped_lock and scoped_try_lock and boost::condition
- New Features:
  - #6270 C++11 compliance: Add thread constructor from movable callable and movable arguments
  - #7279 C++11 compliance: Add noexcept in system related functions
  - #7280 C++11 compliance: Add promise::...at_thread_exit functions
  - #7281 C++11 compliance: Add ArgTypes to packaged_task template.
  - #7282 C++11 compliance: Add packaged_task::make_ready_at_thread_exit function
  - #7412 C++11 compliance: Add async from movable callable and movable arguments
  - #7413 C++11 compliance: Add async when the launch policy is deferred.
  - #7414 C++11 compliance: future::get post-condition should be valid()==false.
  - #7422 Provide a condition variable with zero-overhead performance penality.
  - #7444 Async: Add make_future/make_shared_future.
  - #7540 Threads: Add a helper class that join a thread on destruction.
  - #7541 Threads: Add a thread wrapper class that joins on destruction.
  - #7575 C++11 compliance: A future created by async should "join" in the destructor.
  - #7587 Synchro: Add strict_lock and nested_strict_lock.
  - #7588 Synchro: Split the locks.hpp in several files to limit dependencies.
  - #7590 Synchro: Add lockable concept checkers based on Boost.ConceptCheck.
  - #7591 Add lockable traits that can be used with enable_if.
  - #7592 Synchro: Add a null_mutex that is a no-op and that is a model of UpgardeLockable.
  - #7593 Synchro: Add a externally_locked class.
  - #7594 Threads: Allow to disable thread interruptions.
- Fixed Bugs:
  - #7464 BOOST_TEST(n_alive == 1); fails due to race condition in a regression test tool.
  - #7657 Serious performance and memory consumption hit if condition_variable methods condition notify_one or notify_all is used repeatedly.
  - #7665 this_thread::sleep_for no longer uses steady_clock in thread.
  - #7668 thread_group::join_all() should check whether its threads are joinable.
  - #7669 thread_group::join_all() should catch resource_deadlock_would_occur.
  - #7671 Error including boost/thread.hpp header on iOS.
  - #7672 lockable_traits.hpp syntax error: "defined" token misspelled.
  - #7798 boost::future set_wait_callback thread safety issues.
  - #7808 Incorrect description of effects for this_thread::sleep_for and this_thread::sleep_until.
  - #7812 Returns: cv_status::no_timeout if the call is returning because the time period specified by rel_time has elapsed, cv_status::timeout otherwise.
  - #7874 compile warning: thread.hpp:342: warning: type attributes are honored only at type definition.
  - #7875 BOOST_THREAD_THROW_IF_PRECONDITION_NOT_SATISFIED should not be enabled by default.
  - #7882 wrong exception text from condition_variable::wait(unique_lock<mutex>&).
  - #7890 thread::do_try_join_until() is missing a return type.
Unordered:
- Remove support for the old pre-standard variadic pair constructors, and equality implementation. Both have been deprecated since Boost 1.48.
- More internal implementation changes, including a much simpler implementation of erase, and removed more deprecated config macros.
Utility:
- Added string_ref, a non-owning reference to a contiguous sequence of characters.
Variant:
- Added rvalue constructors and rvalue assignment operators (for C++11 compatible compilers only). Library now can be used with move-only types (#7620, #7718).
Wave:
- See the Changelog for details.
xpressive:
- Accomodate recent smart pointer changes (#7809).

Updated Tools

Boost Build System:
- Qt5 toolset
- improved rcc support (#7576)

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 4.1.2, 4.2.4, 4.4.4, 4.5.3, 4.6.3, 4.7.2
- GCC, C++11 mode: 4.4.4, 4.5.3, 4.6.3, 4.7.2
- Intel: 11.1, 12.1
- LLVM Clang: 2.8
- LLVM Clang, with libc++: 3.2
OS X:
- GCC: 4.4.7
- GCC, C++11 mode: 4.4.4
- Intel: 11.1, 12.0
Windows:
- Visual C++: 9.0, 10.0
FreeBSD:
- GCC: 4.2.1, 32 and 64 bit

Boost's additional test compilers include:

Linux:
- Cray: 4.6.1
- Clang: from subversion
- LLVM Clang, with libc++: 3.2
- GCC: 4.2.4, 4.4.4, 4.5.3, 4.6.3, 4.7.1
- GCC, C++11 mode: 4.4.4, 4.5.3, 4.6.3, 4.7.1, 4.7.2
- pgCC: 11.9
- Intel: 10.1, 11.1, 12.1
- Intel, C++11 mode: 13.0.1
- Visual Age:
OS X:
- Clang: from subversion
- Clang, C++11 mode: from subversion
- Intel: 11.1, 12.0
- GCC: 4.4.7
- GCC, C++11 mode: 4.4.4
Windows:
- Visual C++: 10.0, 11.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
AIX:
- IBM XL C/C++ Enterprise Edition: V12.1.0.1

Acknowledgements

Beman Dawes, Eric Niebler, Rene Rivera, Daniel James, Vladimir Prus and Marshall Clow managed this release.

Version 1.52.0

Mon, 5 Nov 2012 08:05:58 -0800

Updated Libraries

Accumulators:
- Fix long-standing dependency tracking bug, #7409
Config:
- Define BOOST_NO_SFINAE_EXPR for gcc-4.4, since the support was found to be too buggy.
Chrono:
- New Features:
  - #5980 Enhance chrono I/O with H. Hinnant proposal proposal which has the advantage to provide I/O for system clocks using the Gregorian Calendar.
  - #5981 Add i/o state savers for duration and time_point formatting state.
  - #7059 Add low level i/o facilities.
- Deprecated features:
  - The chrono i/o version included in Boost.Chrono 1.2.x has been completly refactored in version 2.0.0
  - chrono I/O: The manipulators __duration_short, __duration_long are depreceated. You should use the parameterized form __duration_fmt or the renamed manipulators __duration_symbol and __duration_prefix instead.
  - chrono I/O: The __duration_punct<> facet is deprecated. You should use the __get_duration_style free function to get the informations and use the __duration_units facet for localization purposes.
  - When BOOST_CHRONO_VERSION==2 the preceding deprecated functions are not available.
- Fixes:
  - #7381 C++11 compliance: unresolved symbol when assigning a constexpr duration to a non-const local variable.
  - #7479 Compile fails with compilers supporting constexpr fails if the standard library doesn't provides the constexpr interface
- Would not fix:
  - #6871 chrono_io.hpp: operator<<(ostream& os, ...) modifies the state of os. The neww io interface provided in version 2 solves this issue. You should move to the new version.
Container:
- Improved stable_vector's template code bloat and type safety.
- Changed typedefs and reordered functions of sequence containers to improve doxygen documentation.
- Fixed bugs #6615, #7139, #7215, #7232, #7269, #7439.
- Implemented LWG Issue #149 (range insertion now returns an iterator) & cleaned up insertion code in most containers
- Corrected aliasing errors.
DateTime:
- Document BOOST_DATE_TIME_NO_LIB (#6077).
- Fix nth_as_str (#7022).
- Fix some warnings (#7234).
Foreach:
- Fix alignment warning on gcc.
Function:
- Move constructors and move assignment operators added (only for compilers with C++11 rvalue references support) #7330.
Graph:
- Fixed bugs #6950, #7226,#7308, #7327, #7338, #7341, #7378, #7380, #7398, and #7428, plus others not in Trac.
Hash:
- Restore enum support, which was accidentally removed in the last version (#7437).
- New floating point hasher - will hash the binary representation on more platforms, which should be faster.
Interprocess:
- Added shrink_by and advise functions in mapped_region.
- ABI breaking: Reimplemented message_queue with a circular buffer index (the old behavior used an ordered array, leading to excessive copies). This should greatly increase performance but breaks ABI. Old behaviour/ABI can be used undefining macro BOOST_INTERPROCESS_MSG_QUEUE_CIRCULAR_INDEX in boost/interprocess/detail/workaround.hpp
- Improved message_queue insertion time avoiding priority search for common cases (both array and circular buffer configurations).
- Implemented interproces_sharable_mutex and interproces_condition_any.
- Improved offset_ptr performance.
- Added integer overflow checks.
Iterator:
- Fixed:
  - #5825 constructing function_input_iterator without consuming an item
  - #7194 Error in documentation of make_function_input_iterator
- Breaking changes:
  - Due to the fix for #5825, a function_input_iterator will no longer make unnecessary invokations to the wrapped nullary function. For example, constructing an end iterator will now not trigger an invokation; and dereferencing-and-incrementing an iterator N times will trigger N invokations, not N+1 as before. User code that relied on the old behavior will need to be adjusted.
Lexical cast:
- Restored compilation on MSVC-2003 (was broken in 1.51.0) #7255.
- Added lexical_cast(const CharType* chars, std::size_t count) function overload. #6663.
- Fixed bug #7228.
Math:
- Added Airy functions and Jacobi Elliptic functions.
- In several distributions (particulary the Students T) corrected moments for small degrees of freedom #7177 (reported by Thomas Mang).
- Corrected failure to detect bad parameters in many distributions #6934 (reported by Florian Schoppmann) by adding a function check_out_of_range to test many possible bad parameters. This test revealed several distributions where the checks for bad parameters were ineffective, and these have been rectified.
- Fixed issue in Hankel functions that causes incorrect values to be returned for x < 0 and ν odd, see #7135.
- In non-central T permitted infinite degrees of freedom #7259 implemented using the normal distribution (requested by Thomas Mang). Also much enhanced accuracy for large degrees of freedom and/or large non-centrality parameters by switching to use the Students t distribution (or Normal distribution for infinite degrees of freedom) centered at delta, when delta / (4 * v) < epsilon for the floating-point type in use. See #7259. It was also found that the incomplete beta was suffering from serious cancellation errors when degrees of freedom was very large. (That has now been fixed in our code, but any code based on Didonato and Morris's original papers (probably every implementation out there actually) will have the same issue).
- Fixed minor issues #6517, #6362, #7053, #2693, #6937, #7099.
Phoenix:
- Make Phoenix work with decltype-based boost::result_of.
Polygon:
- Included Voronoi diagram extensions.
- Introduced new Segment concept.
- Fixed compilation issues.
Proto:
- The data parameter to primitive transforms can now optionally have slots indexed by key.
- Primitive transforms can now operatate on temporary expressions that are non-const qualified.
- Add callable function object types for the free functions in <iterator> and also for some Boost.Range functions.
- Boost.MPL algorithms work on Proto expression nodes.
- proto::pass_through primitive transform now accepts an optional Domain template parameter for specifying the target domain of the resulting expression.
Ratio:
- Features:
  - Replace the short_name and long_name functions by symbol and prefix functions respectively.
- Deprecated:
  - The ratio_string<>::short_name and ratio_string<>::long_name are deprecated. Use ratio_string<>::symbol and ratio_string<>::prefix respectively. These functions be removed in 1.55.
- Fixes:
  - #7478 Compiles fails with compilers supporting char16_t and char32_t fails if the library doesn't provides std::u16string and std::u32string.
Result_of:
- Switch boost::result_of to use decltype on compilers for which support is deemed "good enough". That means if the compiler implements n3276. (For now, that only includes very recent versions of clang.)
- boost::result_of is now "sfinae-friendly" when it uses decltype. See n3436.
Thread:
- Deprecated Features: Deprecated features since boost 1.50 available only until boost 1.55. These deprecated features will be provided by default up to boost 1.52. If you don't want to include the deprecated features you could define BOOST_THREAD_DONT_PROVIDE_DEPRECATED_FEATURES_SINCE_V3_0_0. Since 1.53 these features will not be included any more by default. Since this version, if you want to include the deprecated features yet you could define BOOST_THREAD_PROVIDE_DEPRECATED_FEATURES_SINCE_V3_0_0. These deprecated features will be only available until boost 1.55, that is you have yet 1 year to move to the new features.
  - Time related functions don't using the Boost.Chrono library, use the chrono overloads instead.
- Breaking changes when BOOST_THREAD_VERSION==3 (Default value since Boost 1.53): There are some new features which share the same interface but with different behavior. These breaking features are provided by default when BOOST_THREAD_VERSION is 3, but the user can however choose the version 2 behavior by defining the corresponding macro. As for the deprecated features, these broken features will be only available until boost 1.55.
  - #6229 C++11 compliance & Breaking change: Rename the unique_future to future following the c++11.
  - #6266 C++11 compliance & Breaking change: thread destructor should call terminate if joinable.
  - #6269 C++11 compliance & Breaking change: thread move assignment should call terminate if joinable.
- New Features:
  - #4710 C++11 compliance: Missing async().
  - #7283 C++11 compliance: Add notify_all_at_thread_exit.
  - #7345 C++11 compliance: Add noexcept to recursive mutex try_lock.
- Fixed Bugs:
  - #2361 thread_specific_ptr: document nature of the key, complexity and rationale.
  - #2797 Two problems with thread_specific_ptr.
  - #5274 failed to compile future.hpp with stlport 5.1.5 under msvc8.1, because of undefined class.
  - #5431 compile error in Windows CE 6.0(interlocked).
  - #5752 boost::call_once() is unreliable on some platforms.
  - #7045 Thread library does not automatically compile date_time.
  - #7173 wrong function name interrupt_point().
  - #7200 Unable to build boost.thread modularized.
  - #7220 gcc 4.6.2 warns about inline+dllimport functions.
  - #7238 this_thread::sleep_for() does not respond to interrupt().
  - #7245 Minor typos on documentation related to version 3.
  - #7272 win32/thread_primitives.hpp: (Unneccessary) Warning.
  - #7284 Clarify that there is no access priority between lock and shared_lock on shared mutex.
  - #7329 boost/thread/future.hpp does not compile on HPUX.
  - #7336 BOOST_THREAD_DONT_USE_SYSTEM doesn't work.
  - #7349 packaged_task holds reference to temporary.
  - #7350 allocator_destructor does not destroy object
uBLAS:
- improved performance of inplace_solve (issue #4024)
- fixed coordinate_matrix for use with gcc 4.7 (issue #7363)
Unordered:
- In assignment, reuse existing nodes where possible.
- Fix bugs when erasing ranges (#7471).
- Some work on the implementation.
Uuid:
- Fixes #6118, #6788, #7375.
- #7128 - fixed bug in sha1.hpp for messages longer than 536,870,912 bytes.
Wave:
- See the Changelog for details.
xpressive:
- Make sub_match work with Boost.Range. Fixes #7237.

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 4.2.4, 4.3.4, 4.4.3, 4.5.3, 4.6.2, 4.7.2
- GCC, C++11 mode: 4.3.4, 4.4.3, 4.5.3, 4.6.2
- Intel: 11.1, 12.0, 12.1
- LLVM Clang: 2.8
OS X:
- GCC: 4.4.4
- GCC, C++11 mode: 4.4.4
- Intel: 11.1, 12.0
Windows:
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.3, 4.7.0
- Visual C++: 8.0, 9.0, 10.0
FreeBSD:
- GCC: 4.2.1, 32 and 64 bit

Boost's additional test compilers include:

Linux:
- Cray: 8.0
- Clang: from subversion
- LLVM Clang:
- GCC: 4.2.4, 4.3.4, 4.4.4, 4.5.3, 4.6.2, 4.6.3, 4.7.0, 4.7.1, 4.7.2
- GCC, C++11 mode: 4.3.4, 4.4.4, 4.5.3, 4.6.3, 4.7.1
- pgCC: 11.9
- Intel: 10.1, 11.1, 12.0, 12.1
- Visual Age: 10.1
OS X:
- Clang: from subversion
- Clang, C++11 mode: from subversion
- Intel: 11.1, 12.0
- GCC: 4.4.4
- GCC, C++11 mode: 4.4.4
Windows:
- Visual C++: 8.0, 9.0, 10.0, 11.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.3, 4.7.0
AIX:
- IBM XL C/C++ Enterprise Edition: V12.1.0.0
FreeBSD:
- GCC: 4.2.1, 64 bit
Solaris:
- Sun: 5.10

Acknowledgements

Beman Dawes, Eric Niebler, Rene Rivera, Daniel James, Vladimir Prus and Marshall Clow managed this release.

Version 1.51.0

Mon, 20 Aug 2012 16:00:21 -0700

New Libraries

Context: Context switching library, from Oliver Kowalke.

Updated Libraries

Algorithm:
- Fixed is_sorted_until ; now matches the c++11 standard behavior on ranges with duplicate values.
- Added range support for the rest of the search algorithms.
- unhex now uses Boost.Exception to signal bad input.
Asio:
- Fixed an incompatibility between ip::tcp::iostream and C++11 (#7162).
- Decorated GCC attribute names with underscores to prevent interaction with user-defined macros (#6415).
- Added missing #include <cctype>, needed for some versions of MinGW.
- Changed to use gcc's atomic builtins on ARM CPUs, when available (#7140).
- Changed strand destruction to be a no-op, to allow strand objects to be destroyed after their associated io_service has been destroyed.
- Added support for some newer versions of glibc which provide the epoll_create1() function but always fail with ENOSYS (#7012).
- Changed the SSL implementation to throw an exception if SSL engine initialisation fails (#6303).
- Fixed another regression in buffered_write_stream (#6310).
- Implemented various minor performance improvements, primarily targeted at Linux x86 and x86-64 platforms.
Config:
- Deprecated a whole bunch of macros that were c++11 specific, but not named to show that they were c++11 specific. Made new macros with better names, and paired the old macros with the new ones. Updated the documentation to list the deprecated macros.
Chrono:
- #6918 Boost Chrono compilation failure on HP uX due to undefined pthread_getcpuclockid.
- #6241 boost::chrono compilation problems without std::wstring support.
- #6987 Documentation & C++11.
- #7041 time_point.hpp depends on Boost.System.
- #7042 Avoiding time_point and duration dependency on time.h and CLOCK_REALTIME.
- #7058 Make it work when BOOST_NO_EXCEPTIONS is defined.
- #7069 Misspellings in clock_string<thread_clock>.
- #7081 WinError.h capitalization in boost/detail/win/basic_types.hpp.
Geometry:
- points accessed through a pointer (e.g. in a linestring) should now be specialized without the pointer. In previous versions a type my_point used like linestring<my_point*> had to be specalized like: template<> struct tag<my_point*>. Now the library itself removes the pointer before calling the traits class, so now it should be like: template<> struct tag<my_point>
- intersection was sometimes wrong for integer points, fixed
- documentation, order of parameters in simplify was wrong, fixed
- 7030 spherical distance, fixed (by patch of Karsten Ahnert)
Graph:
- Refactored support for internal and bundled properties in Boost.Graph-provided graph types, and cleaned up named parameter functionality:
  - Enabled old-style (non-bundled) internal properties in compressed_sparse_row_graph.
  - Bundled properties should work correctly for all graph types and adaptors.
- Bugs fixed:
  - #6993: Typo Bundled Properties document
  - #7002: Problem with initialization of CSR bidirectional graph
  - #7023: Enclose internal type graphml_reader in anonymous namespace
  - Other bugs and warnings not in Trac
Hash:
- Support the standard smart pointers.
- hash_value now implemented using SFINAE to avoid implicit casts to built in types when calling it.
- Updated to use the new config macros.
Lexical cast:
- Better performance, less memory usage for boost::array<character_type, N> and std::array<character_type, N> conversions.
- Fixed bug with volatile input parameter #7157.
Math:
- Updated to use the new config macros.
MSM:
- Support for boost::any http://www.boost.org/doc/libs/1_51_0/libs/msm/doc/HTML/ch03s03.html#any-event or kleene http://www.boost.org/doc/libs/1_51_0/libs/msm/doc/HTML/ch03s04.html#kleene-event as acceptable events
- Bugfix: compiler error with fsm internal table and none (compound) event.
- Bugfix: euml::defer_ leading to stack overflow.
Proto:
- Proto transforms get pseudo-parameter pack expansion support for unpacking expressions. See the Release Notes for more information.
Ratio:
- #7075 Workaround for error: the type of partial specialization template parameter constant "n1" depends on another template parameter.
Regex:
- Updated to use the new config macros.
Thread:
- #4258 Linking with boost thread does not work on mingw/gcc 4.5.
- #4885 Access violation in set_tss_data at process exit due to invalid assumption about TlsAlloc.
- #6931 mutex waits forwever with Intel Compiler and /debug:parallel
- #7044 boost 1.50.0 header missing.
- #7052 Thread: BOOST_THREAD_PROVIDES_DEPRECATED_FEATURES_SINCE_V3_0_0 only masks thread::operator==, thread::operator!= forward declarations, not definitions.
- #7066 An attempt to fix current_thread_tls_key static initialization order.
- #7074 Multiply defined symbol boost::allocator_arg.
- #7078 Trivial 64-bit warning fix on Windows for thread attribute stack size
- #7089 BOOST_THREAD_WAIT_BUG limits functionality without solving anything
Unordered:
- Fix construction/destruction issue when using a C++11 compiler with a C++03 allocator (#7100).
- Remove a try..catch to support compiling without exceptions.
- Adjust SFINAE use to try to supprt g++ 3.4 (#7175).
- Updated to use the new config macros.
Wave:
- See the Changelog for details.
xpressive:
- Work around buggy wide ctype facet on cygwin and mingw.
- Work around absence of __isctype on some glibc implementations.
- op::as shouldn't assume string::iterator != char*.
- Fix assertion in cpp_regex_traits on libc++, thanks to John Fletcher.

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 4.2.4, 4.3.4, 4.4.3, 4.5.3, 4.6.2, 4.7
- GCC, C++11 mode: 4.3.4, 4.4.3, 4.5.3, 4.6.2
- Intel: 11.1, 12.0, 12.1
- LLVM Clang 2.8
OS X:
- GCC: 4.4
- GCC, C++11 mode: 4.4
- Intel: 11.1, 12.0
Windows:
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.3
- Visual C++: 8.0, 9.0, 10.0
FreeBSD:
- GCC: 4.2.1, 32 and 64 bit

Boost's additional test compilers include:

Linux:
- Clang: from subversion
- LLVM Clang: 3.0
- GCC: 4.2.4, 4.3.4, 4.4.4, 4.4.7, 4.5.3, 4.6.2, 4.6.3, 4.7.0, 4.7.1
- GCC, C++11 mode: 4.3.4, 4.4.4, 4.5.3, 4.6.3
- pgCC: 11.9
- Intel: 10.1, 11.1, 12.0, 12.1
- Visual Age: 10.1
OS X:
- Clang: from subversion
- Clang, C++11 mode: from subversion
- Intel: 11.1, 12.0
- GCC: 4.4
- GCC, C++11 mode: 4.4
Windows:
- Visual C++: 8.0, 9.0, 10.0
- GCC, mingw: 4.4.0, 4.6.3, 4.7.0
AIX:
- IBM XL C/C++ Enterprise Edition: V12.1.0.0
FreeBSD:
- GCC: 4.2.1, 32 and 64 bit
Solaris:
- Sun: 5.10

Acknowledgements

Beman Dawes, Eric Niebler, Rene Rivera, Daniel James, Vladimir Prus and Marshall Clow managed this release.

Version 1.50.0

Thu, 28 Jun 2012 08:48:57 -0400

Patches

Boost.Unordered patch - Fixes a bug when compiled using a C++11 compiler, but with a C++03 allocator. When inserting elements, allocator_traits detects that the node can be constructed using an accidental implicit conversion which causes several problems.

New Libraries

Algorithm: A collection of useful generic algorithms, from Marshall Clow. This includes several different searching algorithms, as well as most of the new algorithms from the C++11 standard library
Functional/OverloadedFunction: Overload different functions into a single function object, from Lorenzo Caminiti.
LocalFunction: Program functions locally, within other functions, directly within the scope where they are needed, from Lorenzo Caminiti.
Utility/IdentityType: Wrap types within round parenthesis so they can always be passed as macro parameters, from Lorenzo Caminiti.

Updated Libraries

Accumulators:
- add missing #include <boost/throw_exception.hpp>, fixes #6702.
- work around for msvc which allows ctor templates to be copy ctors, fixes #6535.
- shorten filenames to meet boost guidelines, fixes #6196.
Array:
- add support for Boost.Hash #6791.
Asio:
- Changed the epoll_reactor backend to do lazy registration for EPOLLOUT events.
- Fixed the epoll_reactor handling of out-of-band data, which was broken by an incomplete fix in the last release.
- Changed Asio's SSL wrapper to respect OpenSSL's OPENSSL_NO_ENGINE feature test #define (#6432).
- Fixed windows::object_handle so that it works with Windows compilers that support C++11 move semantics (such as g++).
- Improved the performance of strand rescheduling.
- Added support for g++ 4.7 when compiling in C++11 mode (#6620).
- Fixed a problem where signal_set handlers were not being delivered when the io_service was constructed with a concurrency_hint of 1 (#6657).
Bimap:
- Remove spurious dependency on Boost.Serialization, fixes #3868.
- Solve unused constructor parameter warning, fixes #5749.
- Add key_type and mapped_type (leaving data_type for backward compatibility) typedefs to map views, fixes #6031.
Chrono:
- Fixed Bugs:
  - #6361 integer overflow in boost::chrono::process_real_cpu_clock::now() under Windows 32bits.
  - #6628 compiler warning in process_cpu_clocks.hpp.
  - #6666 thread_clock.hpp needs pthread.h.
Concept Check:
- Fixed:
  - #6738 Shadowed variable warning.
Filesystem:
- Remove Filesystem Version 2 from the distribution. Version 3 is now the only distributed version. Those still using V2 are urged to migrate to V3 as soon as possible.
- Add constexpr value_type preferred_separator to class path.
- Fix #5118, replace_extension doesn't work as specified in documentation. The documentation, implementation, and test cases have all had fixes applied. The documentation had failed to mention that any existing extension is removed. The behavior for simple cases has been reverted to the Version 2 behavior, but with corrections so that complex replacements now work. Two test cases from #5118 have been added.
- Fix #3737, Boost.Filesystem does not compile on Windows Mobile. On Windows, <sys/stat.h> is no longer included.
- Fix #4065, Boost Filesystem lexicographic path comparison inconsistent. This required multiple source code bug fixes and code cleanup, correcting problems not related to lexicographical issues.
- Add class path member function compare for consistency with std::string.
- Tighten BOOST_FILESYSTEM_DYN_LINK and BOOST_FILESYSTEM_STATIC_LINK logic in filesystem/config.hpp so that one or the other is always defined, and both being defined is a #error.
- Fix #6690 and #6737, resolving static linking related problems with VC++ 8 through 11. Note that this fix may reintroduce codecvt thread safety problems #4889, #6320, for these compilers if static linking is used.
- Add path::operator+= and concat functions to tack on things like suffixes or numbers. Suggested by Ed Smith-Rowland and others.
- Fix #6809, Implementation of filesystem::rename() method for MS Windows is wrong, by adding MOVEFILE_COPY_ALLOWED to deal with renames across drives, volumes, file systems. Fix has no effect on non-Windows systems.
- Fix #6819, A path operand with a source that was a one character array was treated as empty, even if it wasn't empty. Such arrays can occur in unions or in code using C variable length array idioms.
- Fix #6932, create_directories throws exception even if error_code is specified.
Foreach:
- Revert fix for #6131 which caused more harm than good.
Geometry:
- Fixed Bugs:
  - the return type of comparable projected point strategy for integer points was wrong (integer), fixed
  - several robustness issues in intersection of segments and polygons, fixed
  - invalid intersection output is filtered out
  - disjoint for multi_polygon's might incorrectly return true, fixed
- Solved tickets
  - 6585 patch for alternative syntax multipoint, applied
  - 6584 patch for bug in distance, applied
  - 5730 same issue as 6584, fixed
  - 6166 patch for missing transformation, applied
  - 6696 invalid intersection output, was (by chance) already fixed in Trunk before reported
- Additional functionality
  - added algorithm "touches" (OGC SF compliant) for *polygon/*polygon
Graph:
- Fixed Bugs:
  - #4622 clear_vertex on a vertex with a self-loop can cause a segmentation fault.
  - #6033 Lowpoint map calculated by biconnected_components(...) is sometimes wrong.
  - #6242 isomorphism doesn't reset mapping.
  - #6435 cube_topology documentation should say 3D, not 2D.
  - #6520 small_world_1_70_6_0p02.png is broken in documentation of graph_parallel.
  - #6564 BGL copy constructor for subgraph does not track local vertices/edges.
  - #6573 BGL: boost::isomorphism routine fails with large graphs.
  - #6583 Dijkstra Visitor Concept docs probably show wrong type for variable.
  - #6647 BGL strong_components do not compile on MSVC 8.
  - #6656 Dependent type in subgraph used without typename.
  - #6707 is_straight_line_drawing.hpp missing #include <map>.
  - #6708 Make bool boost::intersects() in is_straight_line_drawing.hpp inline?
  - #6739 Cannot use write_graphviz_dp with a constified subgraph.
  - #6858 boost::get() calls wrongly resolved by g++.
  - #6892 VertexIndexGraph concept not required for bron_kerbosch_all_cliques().
  - Other bugs and warnings not in Trac.
Hash:
- Support std::array and std::tuple when available (#6806).
- Avoid gcc's -Wfloat-equal warning (#6771).
- Add deprecation warning to the long deprecated boost/functional/detail/container_fwd.hpp.
Iostreams:
- Improved gzip support (#5908).
- Update tests for latest Boost.Filesystem and Boost.Test.
- Fix some documentation errors (#6530, #6650).
Iterator:
- Fixed:
  - #5127 Incorrect result_of usage in transform_iterator
  - #5697 iterator_facade::operator-> is broken for proxy references
MultiArray:
- Concepts bug fix and Workaround for Visual Studio 2010 (#4874)
- Fix to assert.cpp test case (Patch)
Lexical cast:
- boost::bad_lexical_cast exception is now globaly visible and can be catched even if code is compiled with -fvisibility=hidden
- Now it is possible to compile and use library with disabled exceptions #5800
- Better performance, less memory usage and bugfixes for boost::iterator_range<character_type*> conversions
- Fixed bugs and warnings: #6645, #6562, #6812, #6852, #6717, #6770, #6504.
Locale:
- Fixed build issues with STLPort library
- Boost.System is now required depenency
- Fixed bugs #6635, #6833
Math:
- Promoted math constants to be 1st class citizens, including convenient access to the most widely used built-in float, double, long double via three namespaces.
- Added the Owen's T function and Skew Normal distribution written by Benjamin Sobotta.
- Added Hankel functions.
- Corrected issue #6627 nonfinite_num_put formatting of 0.0 is incorrect based on a patch submitted by K R Walker.
- Changed constant initialization mechanism so that it is thread safe even for user-defined types, also so that user defined types get the full precision of the constant, even when long double does not. So for example 128-bit rational approximations will work with UDT's and do the right thing, even though long double may be only 64 or 80 bits.
- Fixed issue in bessel_jy which causes Y[sub 8.5](4[pi]) to yield a NaN.
MSM:
- eUML : better syntax for front-ends defined with eUML as transition table only. Caution: Breaking Change!http://www.boost.org/doc/libs/1_50_0/libs/msm/doc/HTML/ch03s04.html#eUML-composite-table
- Bugfix: graph building was only working if initial_state defined as a sequence.
- Bugfix: flags defined for a Terminate or Interrupt state do not break the blocking function of these states any more.
- Bugfix: multiple deferred events from several regions were not working in every case.
- Bugfix: visitor was passed by value to submachines.
- Bugfix: no_transition was not called for submachines who send an event to themselves.
- Fixed warnings with gcc.
Program Options:
- Improved error reporting (Patch from Leo Goodstadt).
- Support for customizing name of option's value in help messages (#4781)
- Fixed compilation with gcc 4.7 (#6790).
PropertyMap:
- Fixed Bugs:
  - #6539 the return type of get() is not documented correctly.
  - #6721 property_map_traits documentation does not mention reference.
Proto:
- Use decltype-based result_of if and only if the compiler implements N3276.
- For C++11, force parameter to mpl::eval_if_c and mpl::if_c to be bool.
- Disable '__forceinline not inlined' warning on msvc.
Ratio:
- Fixed Bugs:
  - #6498 boost::ratio won't compile with default settings.
ScopeExit:
- New Features:
  - Use variadic macros to specify captures as commas-separated lists (but kept preprocessor sequence syntax for backward compatibility).
  - Capture the object in scope using this_.
  - Support empty captures using void.
  - Implicit lambda-like captures using BOOST_SCOPE_EXIT_ALL on compilers that support C++11 lambda functions.
Thread:
- New Features:
  - #1850 Request for unlock_guard to compliment lock_guard.
  - #2637 Request for shared_mutex duration timed_lock and timed_lock_shared.
  - #2741 Proposal to manage portable and non portable thread attributes.
  - #3567 Request for shared_lock_guard.
  - #6194 Adapt to Boost.Move.
  - #6195 c++11 compliance: Provide the standard time related interface using Boost.Chrono.
  - #6217 Enhance Boost.Thread shared mutex interface following Howard Hinnant proposal.
  - #6224 c++11 compliance: Add the use of standard noexcept on compilers supporting them.
  - #6226 c++11 compliance: Add explicit bool conversion from locks.
  - #6228 Add promise constructor with allocator following the standard c++11.
  - #6230 c++11 compliance: Follows the exception reporting mechanism as defined in the c++11.
  - #6266 Breaking change: thread destructor should call terminate if joinable.
  - #6269 Breaking change: thread move assignment should call terminate if joinable.
  - #6272 c++11 compliance: Add thread::id hash specialization.
  - #6273 c++11 compliance: Add cv_status enum class and use it on the conditions wait functions.
  - #6231 Add BasicLockable requirements in the documentation to follow c++11.
  - #6342 c++11 compliance: Adapt the one_flag to the c++11 interface.
  - #6671 upgrade_lock: missing mutex and release functions.
  - #6672 upgrade_lock:: missing constructors from time related types.
  - #6675 upgrade_lock:: missing non-member swap.
  - Added missing packaged_task::result_type and packaged_task:: constructor with allocator.
  - Added packaged_task::reset()
- Fixed Bugs:
  - #2575 Bug- Boost 1.36.0 on Itanium platform.
  - #4345 thread::id and joining problem with cascade of threads.
  - #4921 BOOST_THREAD_USE_DLL and BOOST_THREAD_USE_LIB are crucial and need to be documented.
  - #5013 documentation: boost::thread: pthreas_exit causes terminate().
  - #5173 boost::this_thread::get_id is very slow.
  - #5351 interrupt a future get boost::unknown_exception.
  - #5516 Upgrade lock is not acquired when previous upgrade lock releases if another read lock is present.
  - #5990 shared_future<T>::get() has wrong return type.
  - #6174 packaged_task doesn't correctly handle moving results.
  - #6222 Compile error with SunStudio: unique_future move.
  - #6673 shared_lock: move assign doesn't works with c++11.
  - #6674 shared_mutex: try_lock_upgrade_until doesn't works.
  - Fix issue signaled on the ML with task_object(task_object const&) in presence of task_object(task_object&&)
Unordered:
- Fix equality for unordered_multiset and unordered_multimap.
- Implement reserve (#6857).
- Avoid gcc's -Wfloat-equal and -Wshadow warnings (#6190, #6771).
- Fix namespace issue with bcp (#6905).
- Fix Sun workarounds (#6784).
- Some internal changes to bucket allocation.
- See the change log for full details.
Wave:
- Wave V2.3.2, see the Changelog for details.
xpressive:
- Remove very ugly lexical_cast hack with a slightly less ugly one.
- Replace MPL assert with static assert since it's problematic in C++11, fixes #6846.

Compilers Tested

Boost's primary test compilers are:

Linux:
- Intel: 11.1
- LLVM Clang 2.8
- GCC: 4.2.4, 4.3.4, 4.4.3, 4.5.3, 4.6.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.3, 4.6.2
OS X:
- Intel: 11.1
- GCC: 4.4.4
- GCC, C++0x mode: 4.4.4
Windows:
- Visual C++ 8.0, 9.0, 10.0
- GCC, mingw: 4.4.0, 4.4.7, 4.5.4, 4.6.1, 4.7.0
FreeBSD:
- GCC 4.2.1, 32 and 64 bit
QNX:
- QCC, C++0x mode: 4.4.0, 4.4.7, 4.5.4, 4.6.3, 4.7.0

Boost's additional test compilers include:

Linux:
- Clang from subversion
- GCC: 4.2.4, 4.3.4, 4.4.4, 4.5.3, 4.6.2
- GCC, C++0x mode: 4.3.4, 4.4.4, 4.5.3, 4.6.2
- pgCC: 11.9
- Intel: 10.1, 11.1, 12.0, 12.1
- Visual Age 10.1
OS X:
- Clang from subversion
- Intel 11.1, 12.0
- GCC: 4.4.4
- GCC, C++0x mode: 4.4.4
Windows:
- Visual C++ 8.0, 10.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.4.0, 4.4.7, 4.5.2, 4.5.4, 4.6.4, 4.7.0
- GCC, C++0x mode, mingw: 4.5.2
AIX:
- IBM XL C/C++ Enterprise Edition, V12.1.0.0
FreeBSD:
- GCC 4.2.1, 32 and 64 bit
Solaris:
- Sun 5.10

Acknowledgements

Beman Dawes, Eric Niebler, Rene Rivera, Daniel James, Vladimir Prus and Marshall Clow managed this release.