Release notes for work in progress boost

Version 1.49.0

In Progress

New Libraries

Heap: Priority queue data structures, from Tim Blechmann.

Updated Libraries

Asio:
- Added a new class template basic_waitable_timer based around the C++11 clock type requirements. It may be used with the clocks from the C++11 <chrono> library facility or, if those are not available, Boost.Chrono. The typedefs high_resolution_timer, steady_timer and system_timer may be used to create timer objects for the standard clock types.
- Added a new windows::object_handle class for performing waits on Windows kernel objects. Thanks go to Boris Schaeling for contributing substantially to the development of this feature.
- On Linux, connect() can return EAGAIN in certain circumstances. Remapped this to another error so that it doesn't look like a non-blocking operation (#6048).
- Fixed a compile error on NetBSD (#6098).
- Fixed deadlock on Mac OS X (#6275).
- Fixed a regression in buffered_write_stream (#6310).
- Fixed a non-paged pool "leak" on Windows when an io_service is repeatedly run without anything to do (#6321).
- Reverted earlier change to allow some speculative operations to be performed without holding the lock, as it introduced a race condition in some multithreaded scenarios.
- Fixed a bug where the second buffer in an array of two buffers may be ignored if the first buffer is empty.
Chrono:
- Bug Fixes:
  - #6092 Input from non integral durations makes the compiler fail.
  - #6093 [1/3]second fails as valid duration input.
  - #6113 duplicate symbol when BOOST_CHRONO_HEADER_ONLY is defined.
  - #6243 Sandia-pgi-11.9: more than one instance of overloaded function "min" matches.
  - #6257 process_cpu_clock::now() on linux gives time_points 1/1000 times.
Container:
- Fixed bugs #6499, #6336, #6335, #6287, #6205, #4383.
- Added allocator_traits support for both C++11 and C++03 compilers through an internal allocator_traits clone.
Filesystem:
- Fix #3714, Added test cases and fixes for class path errors when assignment or append used self or portion of self as source.
- Fix #4889, #6320, Locale codecvt_facet not thread safe on Windows. Move Windows, Mac OS X, locale and codecvt facet back to namespace scope. POSIX except OS X uses local static initialization (IE lazy) to ensure exceptions are catchable if environmental variables are misconfigured and to avoid use of locale("") if not actually used.
- Fix #5652, recursive_directory_iterator fails on cyclic symbolic links. Thanks to Daniel Aarno for the patch.
- Fix #5653, recursive_directory_iterator(error_code) can still throw filesystem_error.
- Fix #5900, directory_iterator access violation on Windows if error is thrown. Thanks to Andreas Eckleder for the patch.
- Fix #5900 comment 2, a bug in director_iterator construction with error_code argument that caused increment to be called without the ec argument being passed.
- Fix #5989 by cleaning up test suite path_test.cpp code even though the ticket itself was not a defect, and clarifying docs; iteration over a path yields generic format.
- Fix #5592, Change Windows codecvt processing from CP_THREAD_ACP to CP_ACP.
- Operations function fixes for PGI compiler, thanks to Noel Belcourt.
- Relax permissions test to reflect reality, particularly on the Sandia test platforms.
Geometry:
- Fixed bugs
  - Distance for multi-geometries ignored specified distance strategy.
  - In difference for polygon/multi_polygon (reported 2011/10/24 on GGL-list).
  - Raise exception for calculation of distances of multi-geometrie(s) where one of them is empty
  - Multi DSV did not correctly use settings.
  - Self-intersections could sometimes be missed (introduced in 1.48).
  - Convex hull crashed on empty range (e.g. empty multi point).
- Solved tickets
  - #6028 Documentation: closure.
  - #6178 Missing headerfile.
  - #6021 convex hull of multipoint.
- Additional functionality
  - Support for line/polygon intersections and differences
  - Support for convert of segment/box of different point types
  - Support for append for multi point
  - Scalar functions (distance, area, length, perimeter) now throw an empty_input_exception on empty input
- Documentation
  - Updated support status
- Internal changes
  - Updates in specializations/not_implemented for distance/convert/assign/area
  - Move of wkt/dsv to io folder, making domains redundant
  - Strategy concepts assigned to zero to avoid clang warnings (patched by Vishnu)
Graph:
- Fixed bugs #5881, #6033, #6061, #6137, #6246, #6239, #6293, #6306, #6313 and #6371, plus others not in Trac.
- Re-enabled LEDA graph support (thanks to Jens Muller for the patch).
- Added documentation for edge_predecessor_recorder.
Icl:
- Fixed tickets #6095 and #6210.
- Added move semantics for constructors, assignment operators and binary operators.
Interprocess:
- Fixed bugs #6531, #6412, #6398, #6340, #6319, #6287, #6265, #6233, #6147, #6134, #6058, #6054, #5772, #5738, #5622, #5552, #5518, #4655, #4452, #4383, #4297.
- Fixed timed functions in mutex implementations to fulfill POSIX requirements: Under no circumstance shall the function fail with a timeout if the mutex can be locked immediately. The validity of the abs_timeout parameter need not be checked if the mutex can be locked immediately.
Intrusive:
- Fixed bugs #6347, #6223, #6153.
Lexical cast:
- Fixed bugs and warnings: #6127, #6132, #6159, #6182, #6186, #6193, #6264, #6290, #6298, #6400.
- Better performance and less memory usage for boost::container::basic_string conversions.
Locale:
- Fixed incorrect use of MultiByteToWideChar in detection of invalid input sequences.
Move:
- Fixed bugs #6417, #6183, #6185, #6395, #6396,
PropertyTree:
- Fixes for bugs #4840, #5259, #5281, #5944, #5757, #5710, and #5307.
Spirit:
- Spirit V2.5.2, see the 'What's New' section for details.
Thread:
- Fixed Bugs:
  - #2309 Lack of g++ symbol visibility support in Boost.Thread.
  - #2639 documentation should be extended(defer_lock, try_to_lock, ...).
  - #3639 Boost.Thread doesn't build with Sun-5.9 on Linux.
  - #3762 Thread can't be compiled with winscw (Codewarrior by Nokia).
  - #3885 document about mix usage of boost.thread and native thread api.
  - #3975 Incorrect precondition for promise::set_wait_callback().
  - #4048 thread::id formatting involves locale
  - #4315 gcc 4.4 Warning: inline ... declared as dllimport: attribute ignored.
  - #4480 OpenVMS patches for compiler issues workarounds.
  - #4819 boost.thread's documentation misprints.
  - #5040 future.hpp in boost::thread does not compile with /clr.
  - #5423 thread issues with C++0x.
  - #5502 race condition between shared_mutex timed_lock and lock_shared.
  - #5594 boost::shared_mutex not fully compatible with Windows CE.
  - #5617 boost::thread::id copy ctor.
  - #5739 set-but-not-used warnings with gcc-4.6.
  - #5826 threads.cpp: resource leak on threads creation failure.
  - #5839 thread.cpp: ThreadProxy leaks on exceptions.
  - #5859 win32 shared_mutex constructor leaks on exceptions.
  - #6100 Compute hardware_concurrency() using get_nprocs() on GLIBC systems.
  - #6141 Compilation error when boost.thread and boost.move are used together.
  - #6168 recursive_mutex is using wrong config symbol (possible typo).
  - #6175 Compile error with SunStudio.
  - #6200 patch to have condition_variable and mutex error better handle EINTR.
  - #6207 shared_lock swap compiler error on clang 3.0 c++11.
  - #6208 try_lock_wrapper swap compiler error on clang 3.0 c++11.
Unordered:
- On compilers without rvalue references, the containers are no longer movable by default, as move emulation was causing some odd quirks (#6167, #6311). Define BOOST_UNORDERED_USE_MOVE to make them movable - Boost.Move is still used for elements regardless.
- Fix sequence point warning (#6370).
- Better support for C++11 compilers using older standard libraries.
Uuid:
- fixed #6258
- fixed #5325 (sha1 implementation handles messages as long as the specification)
- progress on #6118 (there are fewer warnings)

Compilers Tested

Boost's primary test compilers are:

Linux:
- Intel: 11.1
- LLVM Clang 2.8
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.3, 4.5.2, 4.6.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
OS X:
- Intel: 11.1
- GCC: 4.2.1, 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: 4.4.2, 4.6.1, 4.6.2

Boost's additional test compilers include:

Linux:
- GCC: 4.2.4, 4.3.4, 4.4.4, 4.5.2, 4.6.2
- GCC, C++0x mode: 4.3.4, 4.4.4, 4.5.2
- pgCC: 11.9
- Intel: 10.1, 11.1, 12.0
- PathScale: 4.0.8
- 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, 9.0, 10.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.4.0, 4.5.2
- GCC, C++0x mode, mingw: 4.5.2
- GCC, mingw 64-bit: 4.4.7, 4.5.4, 4.6.1
AIX:
- IBM XL C/C++ Enterprise Edition, V11.1.0.0
FreeBSD:
- GCC 4.2.1, 32 and 64 bit
Solaris:
- Sun 5.10

Acknowledgements

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

Version 1.48.0

Tue, 15 Nov 2011 10:47:30 -0500

New Libraries

Container: Standard library containers and extensions, from Ion Gaztañaga.
Locale: Provide localization and Unicode handling tools for C++, from Artyom Beilis.
Move: Portable move semantics for C++03 and C++11 compilers, from Ion Gaztañaga.

Updated Libraries

Asio:
- Implemented various performance improvements, including:
  - Using thread-local operation queues in single-threaded use cases (i.e. when concurrency_hint is 1) to eliminate a lock/unlock pair.
  - Allowing some epoll_reactor speculative operations to be performed without holding the lock.
  - Improving locality of reference by performing an epoll_reactor's I/O operation immediately before the corresponding handler is called. Also improves scalability across CPUs.
  - Specialising asynchronous read and write operations for buffer sequences that are arrays (boost::array or std::array) of exactly two buffers.
- Fixed compile error in regex overload of async_read_until (#5688).
- Fixed Windows-specific compile error by explicitly specifying the signal() function from the global namespace (#5722).
- Changed deadline_timer implementation to not read clock unless the timer heap is non-empty.
- Changed SSL buffer sizes to be large enough to hold a complete TLS record (#5854).
- Fixed synchronous null_buffers operations so that they obey the user's non-blocking setting (#5756).
- Changed to set fd_set size at runtime when using Windows.
- Disabled MSVC warning due to const qualifier being applied to function type.
- Fixed crash that occurs when using Intel C++ compiler (#5763).
- Changed OpenSSL initialisation to support all available algorithms.
- Fixed SSL error mapping when session is gracefully shut down.
- Added some latency test programs.
- Clarified that a read operation ends when the buffer is full (#5999).
- Fixed exception safety issue in epoll_reactor initialisation (#6006).
- Made number of strand implementations configurable via BOOST_ASIO_STRAND_IMPLEMENTATIONS macro.
- Added support for BOOST_ASIO_ENABLE_SEQUENTIAL_STRAND_ALLOCATION flag which switches strand allocation to use a round-robin approach rather than hashing.
- Fixed potential strand starvation issue that can occur when strand.post() is used.
Chrono:
- #5979 Added chrono rounding utilities as defined by Howard Hinnant here.
- #5978 Add BOOST_CHRONO_HAS_PROCESS_CLOCKS to know if process clocks are available.
- #5998 Make possible to disable hybrid error handling.
- #5906 Take in account the constexpr as defined in the standard.
- #5907 Take in account noexcept for compilers supporting it.
- Fixed some bugs.
- See the History for more details.
Config:
- Add BOOST_NO_DECLTYPE_N3276 config macro. (See N3276.)
Fusion:
- Make single_view a random access fusion sequence.
- Remove bogus compile-time asserts from fusion::distance.
- Cleaner implementation of segmented Fusion.
Geometry:
- Bugfixes:
  - Robustness issue, in some circumstances the union failed to output. Fixed.
  - Robustness issue, in some circumstances the calculated intersection point was outside the segment. Fixed.
  - Concept issue, cartesian intersect didn't understand segments other than the provided one. Fixed.
  - Sometimes self-intersections in linestrings were missed. Fixed.
  - The fusion coordinate system was not registered correctly. Fixed.
- Solved tickets:
  - #5726 (Segment intersection algorithm still assumes 'first', 'second' members)
  - #5744 (mistake fusion adapt example)
  - #5748 (need include <boost/foreach.hpp>)
  - #5954 (distance_pythagoras skips sqrt() step)
- Improvements on algorithms:
  - Checking self-intersections is now not done automatically, this can blast performance.
  - Besides that, checking self-intersections is made faster.
  - Intersections now avoid outputting duplicate points. So they output the minimal set.
- Additional algorithms:
  - covered_by: within is defined as "within, not on boundary". covered_by is "within or on boundary"
- Additional functionality:
  - within: strategies can now be specified for within<point, box> and within<box, box>
  - convert: a much broader range of conversions is supported
  - assign: idem, (currently partly) synonym for convert (but reversed arguments)
- Additional coordinate types:
  - Basic support for Boost.Rational
Graph:
- Fixed bugs #5185, #5506, #5813 and #5919.
- Various other bug fixes not in Trac.
- Changed edge_descriptor type for reverse_graph to a new data type to avoid ambiguities with the edge_descriptor of the underlying graph.
Interprocess:
- Fixed bugs #2796, #4031, #4251, #4452, #4895, #5077, #5120, #5123, #5230, #5197, #5287, #5294, #5306, #5308, #5392, #5409,
- Added support to customize offset_ptr and allow creating custom managed segments that might be shared between 32 and 64 bit processes.
- Shared memory in windows has again filesystem lifetime: kernel bootstamp and WMI use to get a reliable timestamp was causing a lot of trouble.
Intrusive:
- Fixed bugs #4797, #5165, #5183, #5191.
Lexical cast:
- Added code to work with Inf and NaN values on any platform (#5689).
- New Quickbook documentation (#5723).
- Better performance and less memory usage for many combinations of Source and Target types.
- Better performance for C locale.
Math:
- Added new series evaluation methods to the cyclic Bessel I, J, K and Y functions. Also taken great care to avoid spurious over and underflow of these functions. Fixes issue #5560.
- Added an example of using Inverse Chi-Squared distribution for Bayesian statistics, provided by Thomas Mang.
- Added tests to use improved version of lexical_cast which handles C99 nonfinites without using global facets.
- Corrected wrong out-of-bound uniform distribution CDF complement values #5733.
- Enabled long double support on OpenBSD (issue #6014).
- Changed nextafter and related functions to behave in the same way as other implementations - so that nextafter(+INF, 0) is a finite value (issue #5832).
- Changed tuple include configuration to fix issue when using in conjunction with Boost.Tr1 (issue #5934).
- Changed class eps_tolerance to behave correctly when both ends of the range are zero (issue #6001).
- Fixed missing include guards on prime.hpp (issue #5927).
- Removed unused/undocumented constants from constants.hpp (issue #5982).
- Fixed missing std:: prefix in nonfinite_num_facets.hpp (issue #5914).
- Minor patches for Cray compiler compatibility.
MSM:
- eUML: added easier event reprocessing: process(event_) and reprocess()
- Rewrite of internal transition tables. There were a few bugs (failing recursivity in internal transition tables of sub-sub machines) and a missing feature (unused internal transition table of the main state machine).
- Bugfixes
  - Reverted favor_compile_time policy to Boost 1.46 state
  - none event now is convertible from any other event
  - eUML and pseudo exit states
  - Fixed not working Flag_AND
  - Fixed rare bugs causing multiple processing of the same event in a submachine whose transition table contains this event and a base event of it.
  - gcc warnings about unused variables
- Breaking change: the new internal transition table feature causes a minor breaking change. In a submachine, the "Fsm" template parameter for guards / actions of an internal table declared using internal_transition_table now is the submachine, not the higher-level state machine. Internal transitions declared using internal rows in the higher-level state machine keep their behavior (the "Fsm" parameter is the higher-level state machine). To sum up, the internal transition "Fsm" parameter is the closest state machine containing this transition.
Numeric.Conversion:
- Added numeric_cast_traits; see 'numeric_cast_traits' for details.
Proto:
- Breaking Change: Reduce numbers of operator overloads by using rvalue references on compilers that support them. Any user code that defines additional operator overloads on Proto expressions could potentially be rendered ambiguous by this change. The solution is to use a grammar to disable Proto's operators that are made ambiguous by any user-defined operators.
- Move definitions of Proto tag types into an ADL-blocking namespace.
- Add second template parameter to proto::siwtch_ to control dispatching to cases.
- Allow dependent domains to be specified with BOOST_PROTO_EXTENDS and BOOST_PROTO_BASIC_EXTENDS.
Regex:
- Fixed issues: #698, #5835, #5958, #5736.
Spirit:
- Spirit V2.5.1, see the 'What's New' section for details.
TypeTraits:
- Extension to support operator detection.
Unordered:
- Improved support for the C++11 standard - breaking change to equality and emplace.
- Use Boost.Move to implement move semantics.
- See the change log for full details.
Wave:
- See the Changelog for details.

Compilers Tested

Boost's primary test compilers are:

Linux:
- LLVM Clang 2.8
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.3, 4.5.1, 4.5.2, 4.6
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
- Intel 11.1
OS X:
- Intel 11.1
- GCC: 4.2.1, 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
FreeBSD:
- GCC 4.2.1, 32 and 64 bit.
QNX:
- QCC 4.4.2
- QCC, C++0x mode: 4.4.2, 4.6.1

Boost's additional test compilers include:

Linux:
- Clang from subversion, with libc++ and GNU libstdc++
- LLVM Clang 2.8 x
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.4, 4.5.2, 4.5.4, 4.6.1, 4.6.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.4.4, 4.5.2
- pgCC: 11.2 x
- Intel: 10.1, 11.1, 12.0
- PathScale: 4.0.8
- Visual Age 10.1
OS X:
- Clang from subversion, with libc++ and GNU libstdc++.
- Intel 11.1.
- GCC: 4.2.1, 4.4.4.
- GCC, C++0x mode: 4.4.4.
Windows:
- Visual C++ 8.0, 9.0, 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, 4.6.1
- GCC, C++0x mode, mingw: 4.5.2
- GCC, mingw 64-bit: 4.7.0
AIX:
- IBM XL C/C++ Enterprise Edition, V11.1.0.0
FreeBSD:
- GCC 4.2.1, 32 and 64 bit.
Solaris:
- Sun 5.10

Acknowledgements

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

Version 1.47.0

Mon, 11 Jul 2011 18:19:33 -0400

New Libraries

Chrono: Useful time utilities, from Vicente J. Botet Escribá.
Geometry: Geometry Library, from Barend Gehrels, Bruno Lalande and Mateusz Loskot.
Phoenix: Define small unnamed function objects at the actual call site, and more, from Joel de Guzman, Dan Marsden and Thomas Heller.
Ratio: Compile time rational arithmetic, from Vicente J. Botet Escribá.

Updated Libraries

Accumulators:
- New statistical accumulators: sum_kahan, sum_of_weights_kahan, sum_of_variates_kahan.
Asio:
- Many new features and improvements:
  - Signal handling.
  - A debugging aid for asynchronous programs.
  - Timeouts on socket iostreams.
  - Composed connect operations.
  - Rewritten SSL implementation.
  - C++0x move support.
  - Compatibility with POSIX fork().
  - ... and much more. See the Revision History in the Boost.Asio documentation for more details.
- Tickets addressed: #2879, #3238, #3297, #3307, #3702, #3741, #3900, #3905, #3939, #3958, #4162, #4971, #5124, #5128, #5418, #5453.
Config:
- Fixed bug #1988
DateTime:
- Fixed bugs #4920, #3651, #4845, #4475, #4952, #5345, #5250, #4798, #4754, #4411, #5126, #4780, #2475, #1674.
Dynamic Bitset:
- Fixed bug #5439
Foreach:
- Use rvalue refs on supporting compilers for const rvalue detection.
Function:
- Bug fixes: #3410, #3618, #3912, #4073, #4325, #4717, #4765.
Function Types:
- Bug fixes: #1653, #3162.
Graph:
- Bug fixes.
- Remove deprecated function kolmogorov_max_flow, use boykov_kolmogorov_max_flow instead.
- Removed <boost/graph/detail/is_same.hpp> header since its functionality is in Boost.Type_Traits.
Iostreams:
- Support filesystem v3 paths (#4485).
- Fix a memory leak in chain (#4922).
Iterator:
- Add function_input_iterator (#2893).
- Bug fixes: #1427, #1517, #3434.
Lexical cast:
- Better performance and less memory usage for many combinations of Source and Target types (#5564, #5417, #4397, #5350, #5576).
- Documentation updated (#5576, #5494).
Logic:
- Bug fixes: #3093, #3600.
Math:
- Added changesign function to sign.hpp to facilitate addition of nonfinite facets.
- Addition of nonfinite facets from Johan Rade, with tests, examples of use for C99 format infinity and NaN, and documentation.
- Added tests and documentation of changesign from Johan Rade.
Meta State Machine:
- Added a stop() method in the back-end.
- Added partial support for Boost.Phoenix functors in eUML.
- Added the possibility to choose when state switching occurs.
- Bugfixes:
  - #5117, #5253, #5533, #5573.
  - gcc warnings about unused variables.
  - better implementation of favor_compile_time back-end policy.
  - bug with eUML and state construction.
  - incorrect eUML event and state macros.
  - incorrect event type passed to a direct entry state's on_entry action.
  - more examples.
MultiIndex:
- Fixed an ADL problem in composite_key_compare related with Boost.Ref.
- Maintenance fixes.
Proto:
- Pre-preprocessed for better compile times.
- Default preprocessor limits raised:
  - Max expression arity (BOOST_PROTO_MAX_ARITY) bumped from 5 to 10.
  - Max function call arity (BOOST_PROTO_MAX_FUNCTION_CALL_ARITY) bumped from 5 to 10.
  - Max logical operator arity (BOOST_PROTO_MAX_LOGICAL_ARITY) bumped from 8 to 10.
- Better integration of proto::basic_expr to avoid accidental needless instantiations of proto::expr.
Random:
- Synchronized with the new standard.
  - Many new distributions added: chi_squared_distribution, negative_binomial_distribution, fisher_f_distribution, student_t_distribution, weibull_distribution, extreme_value_distribution, discrete_distribution, piecewise_constant_distribution, piecewise_liear_distribution
  - Renamed uniform_int and uniform_real to uniform_int_distribution and uniform_real_distribution.
  - Added members to all distributions: param_type, param, stream operators, comparison operators, min and max.
  - Allow distributions to be used directly with generators without use of variate_generator.
  - Changed the meaning of the parameters of geometric_distribution and lognormal_distribution.
  - Added a second parameter to gamma_distribution.
  - Added seed_seq and added the corresponding constructors and seed overloads the generators.
  - Added generate_canonical.
  - Renamed the engine tempates. e.g. mersenne_twister becomes mersenne_twister_engine.
  - New engine adapter independent_bits_engine.
  - Added new predefined engine typedefs: mt19937_64, ranlux[24|48][_base], knuth_b.
  - Updated seeding algorithms.
  - Added discard
  - Use unsigned types instead of signed types in all the predefined engines.
- Bug fixes:
  - linear_congruential_engine could assert because the modular arithmetic was not implemented in all cases. shuffle_output, now called shuffle_order_engine, could cause integer overflow. These cases were not triggered by any predefined engines.
  - uniform_small_int now actually behaves as documented.
- New efficient algorithms for binomial_distribution and poisson_distribution.
- Moved all features into namespace boost::random
- Backwards compatibility issues:
  - The seeding algorithms have changed. This was unavoidable for compatibility with the standard. Not to mention that some of the existing algorithms were weird and inconsistent.
    
    Seeding with an integer: The behaviour should be unchanged for most generators except lagged_fibonacci and subtract_with_carry (and thus ranlux).
    
    Seeding a generator with another generator: This has been enabled by making all all generators models of SeedSeq. Therefore, if you seed a Boost.Random generator with a non Boost.Random generator, your code will no longer compile. The algorithm has changed, so code using this seeding method will yield different values.
    
    Seeding a generator from a pair of iterators: This implicitly assumed that the elements were 32-bit integers in some places, but not everywhere. I've added this requirement everywhere and updated the algorithms accordingly. The behaviour of generators with a value_type no more than 32 bits should be unchanged.
  - Renaming:
    
    Whenever a class was renamed, there is a wrapper with the old name. There are also using declarations in namespace boost for everything that was moved.
    
    The names of a few accessors in the distributions changed. Both the old and the new names are allowed.
  - geometric_distribution and lognormal_distribution: The behaviour is different at runtime. boost::geometric_distribution and boost::lognormal_distribution provide the old behaviour, boost::random::geometric_distribution and boost::random::lognormal_distribution provide the new behaviour.
  - Streaming: gamma_distribution has a new parameter, thus text saved with the old version will not readable by the new version.
  - variate_generator is now a simple pass through wrapper. Code that assumes that it will adjust the generator's result type to match the distribution will no longer work. This is not an issue with any of the distributions provided by Boost.Random.
  - Return types: The result_types of some generators have changed slightly. Some signed types have changed to unsigned to match the standard.
  - has_fixed_range: This is now always false, as it doesn't appear to be very useful and is excessively cumbersome. Anything that was accessing const_min and const_max without first checking has_fixed_range was incorrect to begin with.
Range:
- Fixed the end position irange when step size is greater than 1 (#5544).
Spirit:
- Spirit V2.5, see the 'What's New' section for details.
Tokenizer:
- Fixed bug #4649.
Utility:
- Bug fixes: #4432.
Uuid:
- Fixed tickets: (#5570, #4601, #4991, #5145, #5235).
Wave:
- Wave V2.3.0, see the Changelog for details.

Build System

The official name of Boost.Build executable was changed to b2. The bootstrap scripts create a copy with the old name bjam to prevent third-party build scripts from failing.

Updated Tools

BoostBook:
- Handle doxygen tags: \see, tparam, ref (for classes only).
- Support note for classes as well as functions.
Quickbook:
- Generate consistent ids for headings.
- Improved unicode support for windows.
- Warn about windows paths, as they aren't portable.
- Reverse deprecation of [br].
- Support date ranges and comma seperated clauses in copyright attributes.
- Improved delimeter checking for simple markup (e.g. *bold*).
- Pass-thru comments in code snippets.
- __FILENAME__ macro now generates relative paths.
- Allow quickbook escapes inside comments in syntax highlighted code.

Compilers Tested

Boost's primary test compilers are:

Linux:
- LLVM Clang 2.8
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.3.5, 4.4.1, 4.4.3, 4.4.5, 4.5.1, 4.5.2, 4.6.0, 4.6.1
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
- Intel 12.0
OS X:
- Apple Clang 2.1
- Intel 11.1
- GCC: 4.2.1, 4.4.4
- GCC, C++0x mode: 4.4.4
Windows:
- Visual C++ 7.1, 9.0, 10.0
- GCC, mingw: 4.4.0
FreeBSD:
- GCC 4.2.1, 64 bit
QNX:
- QCC

Boost's additional test compilers include:

Linux:
- Clang from subversion, with GNU libstdc++.
- LLVM Clang 2.8
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.3.5, 4.4.3, 4.4.5, 4.5.1, 4.5.2, 4.6.0, 4.6.1
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
- pgCC: 11.2
- Intel: 10.1, 11.0, 11.1, 12.0
- PathScale: 3.2
OS X:
- Clang from subversion, with GNU libstdc++.
- Intel 11.1
- GCC: 4.4.4
- GCC, C++0x mode: 4.4.4
Windows:
- Visual C++ 7.1, 9.0, 10.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.5.2
- GCC, C++0x mode, mingw: 4.5.2
AIX:
- IBM XL C/C++ Enterprise Edition, V11.1.0.0

Acknowledgements

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

Version 1.46.1

Sat, 12 Mar 2011 10:45:53 -0500

Updated Libraries

Asio:
- EV_ONESHOT seems to cause problems on some versions of Mac OS X, with the io_service destructor getting stuck inside the close() system call. Changed the kqueue backend to use EV_CLEAR instead (#5021).
- Fixed compile failures with some versions of g++ due to the use of anonymous enums (#4883).
- Fixed a bug on kqueue-based platforms, where some system calls that repeatedly fail with EWOULDBLOCK are not correctly re-registered with kqueue.
- Changed asio::streambuf to ensure that its internal pointers are updated correctly after the data has been modified using std::streambuf member functions.
- Fixed a bug that prevented the linger socket option from working on platforms other than Windows.
Fusion:
- Fix disable_if for Visual C++ 7.1/8.0
Filesystem:
- Fix for STLPort (#5217).
- PGI large file support
Graph:
- Bug fixes, including fixes for: #5181, #5180, #5199 and #5175.
Icl:
- Intersects for interval_maps and segment_type/element_type (#5207).
- Fixed some ambiguous calls to functions in boost and std namespaces.
- Other bug fixes, and documentation fixes.
Math:
- Several minor bug fixes.
Polygon:
- Disabled 45-degree booleans optimization.
Proto:
- Make display_expr copyable (#5096).
- Fix const correctness problem in pass_through.
Property Tree:
- Fix compile error in JSON parser.
Signals2:
- Fix unused parameter warning.
TR1:
- Allow specialization of std::tr1::hash.
- Improved support for Pathscale and Sun compilers.
Unordered:
- Add missing copy constructors and assignment operators when using rvalue references (#5119).

Other changes

Update getting started guide to reflect changes to boost build.
In quickbook, workaround optimization bug in g++ 4.4.

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.1, 4.4.3, 4.4.5, 4.5.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
- Intel: 10.1, 11.0, 11.1
- Clang: 2.8
- Pathscale: 3.2
OS X:
- GCC: 4.0.1, 4.2.1, 4.4
- GCC, C++0x mode: 4.4.
- Intel: 11.1
Windows:
- Visual C++: 7.1, 8.0, 9.0 and 10.0.
- GCC, mingw: 4.4.0.
FreeBSD:
- GCC: 4.2.1, 64 bit.

Boost's additional test compilers include:

Linux:
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.3, 4.4.4, 4.4.5, 4.5.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.2
- pgCC: 11.2
- Intel: 10.1, 11.0, 11.1
- PathScale: 3.2, 4.0.8
- Visual Age C++: 10.1
- Clang from subversion
OS X:
- Intel C++ Compiler: 10.1, 11.0, 11.1
- GCC: 4.0.1, 4.2.1, 4.4.4
- GCC, C++0x mode: 4.4.4
- Clang from subversion, with GNU libstdc++, libc++ and libc++ in C++0x mode.
Windows:
- Visual C++: 7.1, 9.0, 10.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.5.1
- GCC, mingw, C++0x mode: 4.5.1
- Borland: 6.1.3 (2009), 6.2.1 (2010)
AIX:
- IBM XL C/C++ Enterprise Edition, V11.1.0.0
Solaris:
- Sun C++: 5.10

Acknowledgements

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

Version 1.46.0

Mon, 21 Feb 2011 15:36:13 -0500

New Libraries

Icl: Interval Container Library, interval sets and maps and aggregation of associated values, from Joachim Faulhaber.

Updated Libraries

Array:
- Added support for cbegin/cend (#4761)
- Fixed a problem with the Sun compiler (#4757)
Asio:
- Fixed an integer overflow problem that occurs when ip::address_v4::broadcast() is used on 64-bit platforms.
- Fixed a problem on older Linux kernels (where epoll is used without timerfd support) that prevents timely delivery of deadline_timer handlers, after the program has been running for some time (#5045).
Bind:
- make_adaptable now documented (#4532)
Concept Check:
- fixed warnings with self-assignment (#4918)
Filesystem:
- Version 3 of the library is now the default.
- IBM vacpp: Workaround for compiler bug affecting iterator_facade. (#4912)
- Verify, clarify, document that <boost/config/user.hpp> can be used to specify BOOST_FILESYSTEM_VERSION. (#4891)
- Replaced C-style assert with BOOST_ASSERT.
- Undeprecated unique_path(). Instead, add a note mentioning the workaround for lack of thread safety and possible change to cwd. unique_path() is just too convenient to deprecate!
- Cleared several GCC warnings.
- Changed V2 code to use BOOST_THROW_EXCEPTION.
- Windows: Fix status() to report non-symlink reparse point correctly.
- Add symlink_option to recursive_directory_iterator, allowing control over recursion into directory symlinks. Note that the default is changed to not recurse into directory symlinks.
- Reference documentation cleanup, including fixing missing and broken links, and adding missing functions.
- Miscellaneous implementation code cleanup.
Fusion:
- vector copy constructor now copies sequence members in the same order on different platforms (#2823)
Graph:
- Fixed Graphviz output to work on Visual C++ 7.1.
- Replaced assert with BOOST_ASSERT.
- Changed to Boost.Filesystem v3.
- Fixed the following bugs from Trac: #1021, #4556, #4631, #4642, #4715, #4731, #4737, #4753, #4758, #4793, #4843, #4851, #4852, #4887, #4914, #4966.
- Fixed various bugs not in Trac.
Hash:
- Support for std::type_index (#4756).
- Avoid -Wconversion warnings.
Iostreams:
- Use BOOST_ASSERT instead of assert.
- Fixed flush regression (#4590).
Iterator:
- fixed problem with implicit_cast (#3645)
Math:
- Added Wald, Inverse Gaussian and geometric distributions.
- Added information about configuration macros.
- Added support for mpreal as a real-numered type.
Meta State Machine:
- Compile-time state machine analysis.
- Boost.Parameter interface definition for msm::back::state_machine<> template arguments.
- Possibility to provide a container for the event and deferred event queues. A policy implementation based on a more efficient Boost.CircularBuffer is provided.
- msm::back::state_machine<>::is_flag_active method made const.
- Added possibility to enqueue events for delayed processing.
- Bugfixes
  - #4926.
  - stack overflow using the Defer functor
  - anonymous transition of a submachine not called for the initial state
Optional:
- Updated test results with information about expected failures (#2294)
Pool:
- Now can set a max_size for pool (#2696)
- boost/pool/pool.hpp uses reinterpret_cast instead of static_cast (#2941)
- boost::pool_allocator now works with vector of vectors (#386)
- Boost pool is now compatible with Microsoft memory leak detection (#4346)
Program Options:
- Fixed errors in examples in docs (#3992, #4858)
- Now takes argv as const (#3909)
Proto:
- Breaking change: boost/proto/core.hpp no longer defines functional::pop_front and functional::reverse, which have moved to their own headers under boost/proto/functional
- Add callable wrappers for more Fusion algorithms (including fusion::at); and callable wrappers for some std utilities like make_pair, first and second, all under the new boost/proto/functional directory
- Allow transforms to be specified separately from a grammar
- proto::matches preserves domain-specific expression wrappers
- Fix ADL issue with operator, in proto::and_ transform
- Fix handling of grammar checking in expressions involving multiple domains (#4675)
- Fix ambiguous operator<< in proto::display_expr (#4910)
- fusion::is_sequence answers true for Proto expressions (#5006)
- Eliminate -Wundef GCC warning in boost/proto/fusion.hpp (#5075)
Signals:
- gcc warning cleanup (#4365)
Spirit:
- Spirit V2.4.2, see the 'What's New' section for details.
Tokenizer:
- isspace/ispunct was called with wrong character type (#4791)
Unordered:
- Avoid using operator& with the value type.
- Avoid -Wconversion warnings.
Wave:
- See the Changelog for details.

Updated Tools

Boostbook:
- Better support for attributes on root elements - including lang.
Inspect:
- Check that Boost headers do not use C's assert macro.
Quickbook:
- Add support for lang attribute in documentation info.
- Improved anchors.
- Support import, include and xinclude in conditional phrases.
- Uses Filesystem 3.

Compilers Tested

Boost's primary test compilers are:

Linux:
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.4.3, 4.4.5, 4.5.2,
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.0, 4.5.2
- Intel: 10.1, 11.0, 11.1
- Clang: 2.8
- Pathscale: 3.2.
OS X:
- GCC: 4.0.1, 4.2.1, 4.4
- GCC, C++0x mode: 4.4.
- Intel: 11.1
Windows:
- Visual C++: 7.1, 8.0, 9.0 and 10.0.
- GCC, mingw: 4.4.0.
FreeBSD:
- GCC: 4.2.1, 64 bit.

Boost's additional test compilers include:

Linux:
- GCC: 3.4.6, 4.2.4, 4.3.4, 4.3.5, 4.4.3, 4.4.5, 4.5.0, 4.5.2
- GCC, C++0x mode: 4.3.4, 4.4.3, 4.5.0, 4.5.2
- pgCC 11.1
- Intel: 10.1, 11.0, 11.1
- PathScale: 3.2, 4.0
- Visual Age C++ 10.1
- Clang from subversion
OS X:
- Intel C++ Compiler: 10.1, 11.0, 11.1
- GCC: 4.0.1, 4.2.1, 4.4.4
- GCC, C++0x mode: 4.4.4
- Clang from subversion
Windows:
- Visual C++: 7.1, 8.0, 9.0, 10.0
- Visual C++ with STLport: 9.0
- Visual C++, Windows Mobile 5, with STLport: 9.0
- GCC, mingw: 4.4.0, 4.5.1, 4.6.0
- GCC, mingw, C++0x mode: 4.5.1
- Borland: 6.1.3 (2009), 6.2.1 (2010)
AIX:
- IBM XL C/C++ Enterprise Edition, V11.1.0.0
FreeBSD:
- GCC 4.2.1, 64 bit
Solaris:
- Sun C++: 5.10

Acknowledgements

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