Version 1.69.0
December 12th, 2018 02:58 GMT
Documentation
Notes for non-Windows
users
The Boost build system now supports visibilities. If you are building shared
libraries, they will use hidden visibility by default. As a result Boost shared
libraries become smaller, load faster and have less chances to get a symbol
collision.
See Boost.Build
visibility and local-visibility for more info.
To disable that feature you can use use a command line ./b2 visibility=global to
build.
New Libraries
- Safe Numerics:
- A library
for guaranteed correct integer arithmetic for C++14 and later, from Robert
Ramey.
Updated Libraries
-
Any:
-
Fixed issue with visibility. Now
boost::any
variables constructed in one shared library with hidden visibility
could be used and destroyed in other shared library with hidden visibility.
-
Maintenance: dropped some dependencies on other Boost libraries,
fixes for docs.
-
Asio:
-
Fixed a problem with the detection of
std::future
availability with libstdc++.
-
Fixed compile error in regex overload of
read_until.
-
Fixed a timer heap corruption issue that can occur when moving a
cancelled timer.
-
Fixed detection of
std::experimental::string_view
and std::string_view with newer clang/libc++.
-
Fixed MSVC version detection for availability of
std::invoke_result.
-
Fixed the buffer sequence traits to test the new requirements, if
decltype is available.
-
Fixed an MSVC issue when building with exceptions disabled.
-
Added SSL context options for TLS v1.3.
-
Added a compile-time test for TLS v1 support.
-
Fixed the macro used to test for TLS v1.2 support.
-
Prevented global objects from being created once per thread on Windows.
-
Fixed a crash when using
size(), max_size() or empty() on default-constructed resolver
results.
-
Changed to move the return value in
basic_resolver_results::begin() to avoid copying.
-
Enabled move support for the Intel Compiler.
-
Fixed
std::string_view detection issue when
using clang-cl.
-
Fixed the handler tracking operation name for
io_context::executor_type::dispatch.
-
Fixed a buffer overflow that could occur when parsing an address
string with a 64-bit scope id.
-
Added examples showing how to write composed operations.
-
Added C++11 versions of the Timeouts, Timers, SOCKS4 and SSL examples.
-
Fixed minor issues in documentation and examples.
-
Assign:
-
Add rvalue reference, perfect forwarding, and variadic template support
(PR#6) (#10477)
-
Avoid conversion to container's allocator (PR#29) (#5419)
(#7364)
-
Beast:
-
This version fixes some issues in the examples, and provides a new
experimental socket which supports built-in timeouts on asynchronous
operations.
-
New CppCon 2018 websocket
chat example and presentation
video.
-
For a complete list of changes, please view the official Release
Notes.
-
CircularBuffer:
-
Use the empty base optimization for storing allocators that are empty
and not final (Glen Fernandes).
-
Concept Check:
-
Removed dependency on mpl. (PR#14)
-
Context:
-
#85: duplicate alias should be missing GCC alias
-
#87: the clang-win toolset (clang-cl.exe) uses masm from
the underlying msvc
-
#90: remove useless lines in Jamfile.v2
-
#91: add .file section for *_elf_gas.S files
-
Core:
-
Implemented
boost::empty_value,
for library authors to conveniently leverage the Empty Base Optimization
to store objects of potentially empty types (Glen Fernandes). This
facility is now used in Boost.Beast, Boost.CircularBuffer, Boost.MultiArray,
and more.
-
Implemented
boost::quick_exit
to provide the C++11 standard library facility std::quick_exit
functionality (Peter Dimov).
-
Reduced the number of statics in Lightweight Test, and employ lighter
abort behavior for MSVC compilers upon failure to call
boost::report_errors (Glen Fernandes).
-
DLL:
-
Resolved link issues with the smart library #20.
-
Maintenance: fixes for docs and tests.
-
Dynamic Bitset:
-
Performance improvements (over 2x in some cases). (PR#26)
-
Added range-based set, reset, flip methods (PR#27)
-
Fiber:
-
#181: unbuffered_channel push not return
-
#182: Remove UTF-8 BOM at begining of the file
-
#183: Fix boost-install use; should only be issued once
-
Filesystem:
-
Don't use
readdir_r
on Linux and Android since the readdir
function is already thread-safe. (PR#68, #72)
-
Fixed crashes in
boost::filesystem::copy
due to undefined behavior in the implementation. (PR#71)
-
Fixed undefined behavior in
boost::filesystem::directory_iterator
implementation. (PR#77)
-
Fixed compilation errors when using directory iterators with
BOOST_FOREACH.
-
Removed workarounds for older PGI C++ compiler versions to fix compilation
on the newer ones. (PR#49)
-
Fixed MSVC warnings about narrowing conversions. (PR#44)
-
Flyweight:
-
Fixed some issues in GCC related to Boost.MPL placeholder expression
handling.
-
Maintenance fixes.
-
Function:
-
Geometry:
-
Improvements
-
PR#486 Karney's solution of direct geodesic problem
for internal use (thanks to Adeel Ahmad).
-
PR#490 Discrete Frechet and Hausdorff distance algorithms
(thanks to Yaghyavardhan Singh Khangarot).
-
PR#496 New run-time and upgraded compile-time SRS
transformation interfaces (undocumented for now due to potential
interface changes).
-
Solved issues
-
#520 Missing documentation for dsv().
-
#521 Wrong documentation description for distance().
-
#524 Fixed 'enumeration values not handled in switch'
warnings.
-
#527 Workaround for VS 2017 (msvc-15).
-
Bugfixes
-
PR#505 Fixed overflow in overlay algorithms (thanks
to Dane Springmeyer).
-
PR#518 Fixed passing of temporaries in append() (thanks
to xventura81).
-
PR#522 Support python3 in building documentation.
-
GIL:
-
Changed
-
Refactored library includes to
#include
<boost/gil/...> structure (PR#145).
-
Removed
-
Header
include/boost/gil_all.hpp
file as deprecated (PR#145).
-
Header
include/boost/gil_concepts.hpp
file as deprecated (PR#145).
-
Header
include/boost/gil_config.hpp
file as unnecessary (PR#144).
-
Fixed
-
Fixed
point<T> divide and multiply to
not to hardcode result as point<double> (PR#157).
-
Fixed conflict between
std::fill_n
and boost::range::fill_n (PR#152).
-
Fixed issue with re-assignment of functor from
for_each_pixel (PR#139).
-
Fixed missing template keyword prior to dependent name
axis_iterator (PR#129).
-
Integer:
-
boost/pending/integer_log2.hpp header is deprecated and will
be removed in future releases. Use boost/integer/integer_log2.hpp
instead.
-
Iostreams:
-
Remove call to nonexistent member seekpos() of std::fpos (PR#58)
-
Iterator:
-
Fixed compilation problems with ambiguous unqualified calls to
advance and distance
on iterators whose types involve types in the namespace boost. (#43)
-
LexicalCast:
-
Fixed sign-conversion warnings #8991.
-
Maintenance: dropped some dependencies on other Boost libraries,
fixed build system warnings.
-
Log:
-
General changes:
-
Updated syslog sink backend to avoid using deprecated Boost.ASIO
interfaces. (#59)
-
Bug fixes:
-
Fixed a possible incorrect estimation of the total size of
rotated files in the target directory of a text file sink in
some cases.
-
See changelog
for more details.
-
Logic:
-
Breaking change: Use explicit operator
bool when available (PR#5)
-
Math:
-
Add LambertW functions.
-
Update integration routines to support complex valued integrands
and contour integrals.
-
Added the derivative of the Barycentric rational approximation.
-
Minor fixes to better support variable precision floating point types.
-
Removed use of deprecated Boost.Endian in favour of Predef.
-
Updated continued fraction and series evaluation code to support
complex types.
-
Prevent logic error leading to infinite loop in toms748_solve. See
#138.
-
Fix mean and standard_deviation for extreme_value_distribution. See
#139.
-
Improve heuristics used in newton_raphson_iterate. See #145.
-
Fix result of
erf(NaN). See #141 #141.
-
Big push to reduce GCC warnings. See #136 #136.
-
Refactor polynomial addition. See PR#132.
-
Fix for vxWorks having a
real
function in the global namespace. See PR#131.
-
Improve
sinc approximations
and add better tests.
-
Fix typo in Student's T hypothesis testing documentation, see #143.
-
Mp11:
-
Implemented the
mp_starts_with
facility (Glen Fernandes).
-
MultiArray:
-
Improve C++11 allocator model support including: Support for C++11
minimal allocators, support for stateful allocators, using the allocator
for construction and destruction of the value type, and using the
empty base optimization for storing empty or stateless allocators
(Glen Fernandes).
-
Multi-index Containers:
-
Multiprecision:
-
Big update to better support variable precision types so that the
precision of the result is always the largest of all the arguments.
-
Add support for allocators that are
final
in __cpp_int (Glen Fernandes).
-
Removed use of deprecated Boost.Endian in favour of Predef.
-
Add support for
std::string_view.
-
Fixed minor bug in constant initialization. See #67.
-
Make assignment of non-finite value to
cpp_int
a runtime errors. See #58.
-
Added typedefs for
cpp_bin_float_oct
and cpp_complex_oct.
-
PolyCollection:
-
Added Boost.PolyCollection-specific versions of algorithms
std::for_each_n and std::sample.
-
Pool:
-
Replace boost::mutex use to avoid a dependency on Boost.Thread (PR#23)
-
Preprocessor:
-
Supports the new C++ standard conforming preprocessor in VC++ 14.1,
which is currently enabled by using the /experimental:preprocessor
switch, in Visual Studio 2017 15.8 on up.
-
Rational:
-
Spirit:
-
Spirit.X3:
-
Drop own FP routines in favor of
boost::math
(#392) (#13531)
-
Missing visibility mark on exception types (#409)
-
to_utf8: Fixed wchar_t handling on Windows (#413)
(#395)
-
Spirit V2
-
Drop own FP routines in favor of
boost::math
(#392) (#13531)
-
Missing visibility mark on exception types (#409)
-
Fixed transform_attribute ambiguity (#407) (#396)
-
to_utf8: Fixed wchar_t handling on Windows (#413)
(#395)
-
Spirit.Classic:
-
Missing visibility mark on exception types (#409)
-
Stacktrace:
-
libbacktrace usage
was significantly improved. BOOST_STACKTRACE_USE_BACKTRACE
or boost_stacktrace_backtrace
users are encouraged to update:
-
Memory consumprion dropped down.
-
Stack capturing became faster by an order of magnitude.
-
syminfo fallback
enabled to provide information for visible symbols even without
debug information (thanks to github user driesdeschout!)#60,
#61.
-
Exact location of the
backtrace.h
header now can be specified via BOOST_STACKTRACE_BACKTRACE_INCLUDE_FILE,
to allow backtrace.h
header usage on platforms and compilers where that header is
unreachable otherwise (for example Ubuntu Xenial + Clang) #59.
-
Optimized stack capturing if
max_depth
is set (thanks to Jan Eisenhauer for the PR!) #67.
-
Added
to_string(const stacktrace& )
functions for fast conversion of stacktraces to std::string
#57.
-
Maintenance: updated docs #62, tests updated.
-
System:
-
Boost.System is now header-only. A stub library is still built for
compatibility, but linking to it is no longer necessary.
-
Even more functions have been marked
constexpr.
-
The destructor of
error_category
is now protected and
no longer virtual. This
is a potentially breaking change, but its impact is expected to be
limited.
-
error_category now
has a constructor that accepts a 64 bit identifier, enabling distinct
category objects to compare equal.
-
The constructors of
error_category
are now protected.
-
A non-allocating, nonthrowing overload of
message
has been added.
-
A virtual function
failed
has been added, allowing categories for which success is not synonymous
with 0.
-
The deprecated
boost::system::throws
object has been removed.
-
boost::throws()
is now deprecated and its use is discouraged.
-
The constructor of
system_error
taking a single error_code
argument is now explicit.
-
system_error::code()
now returns by value.
-
Test:
-
Boost.test v3.9 see the Changes
log for more details.
-
New feature:
-
Official support of header-only variant of Boost.Test with
multiple translation units.
-
Now possible to manually add a test case by specifying its
name, with
BOOST_TEST_CASE_NAME
-
Better support of
boost::exception
in the logs
-
Bug fixes and pull requests:
-
Trac tickets: #13380, #13625, #13637
-
GitHub Issues: #149, #150, #156, #158,
#163
-
GitHub Pull Requests: PR#147, PR#148, PR#151,
PR#154, PR#161
-
TypeIndex:
-
Fix the regression and speed up parsing of the
boost/type_traits.hpp
header by 30% (thanks to Nikita Kniazev for the PR!) #21.
-
Utility:
-
Added support for non-inheritable empty types to
boost::compressed_pair
by avoiding the empty base optimization for types which are declared
as final (Glen Fernandes).
-
Variant:
-
Fixed issue with visibility. Now
boost::bad_visit
exception could cross the boundaries of shared library with hidden
visibility and could be catched in other shared library with hidden
visibility.
-
YAP:
-
Minor changes to support MSVC++ version 14.15 (Visual Studio 2017
version 15.8).
-
Doc fixes.
Discontinued Libraries
-
Signals (v1) is now removed. Its removal was announced in 1.68 and its
deprecation was announced in 1.54. Boost 1.68 is the last release that
provides this library. Users are encouraged to use Signals2 instead. The
Boost community thanks Douglas Gregor for his work on Signals which served
its users well and which also inspired Signals2.
Compilers Tested
Boost's primary test compilers are:
-
Linux:
-
Clang: 3.0, 4.0.1, 6.0.1
-
Clang, C++0x: 3.0
-
Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 6.0.1
-
Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.2,
6.0.1
-
Clang, C++17: 5.0.2, 6.0.1
-
GCC: 4.4.7, 4.5.3, 4.6.3, 5.4.0, 8.0.1
-
GCC, C++0x: 4.4.7
-
GCC, C++11: 4.7.3, 4.8.5, 4.9.4, 5.4.0, 6.4.0, 7.1.0, 8.0.1
-
GCC, C++14: 5.4.0, 5.5.0, 6.4.0, 7.1.0, 7.3.0, 8.0.1
-
GCC, C++17: 7.3.0, 8.0.1
-
Intel, C++14: 18.0
-
OS X:
-
Apple Clang: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++11: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++14: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++17: 9.1.0, 10.0.0
-
Apple Clang, C++1z: 9.0.0
-
Apple Clang, C++2a: 10.0.0
-
Windows:
-
GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
-
GCC, C++0x: 4.6.4
-
GCC, C++11: 4.7.3, 4.8.1, 4.9.3
-
GCC, C++14: 5.1.0, 5.2.0, 5.3.0, 6.1.0, 6.2.0, 6.3.0, 6.4.0
-
GCC, C++17: 7.1.0, 7.2.0, 7.3.0
-
Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
-
FreeBSD:
-
Clang: 4.0.0
-
Clang, C++11: 4.0.0
-
Clang, C++14: 4.0.0
-
Clang, C++1z: 4.0.0
Boost's additional test compilers include:
-
Linux:
-
Clang: 3.0, 3.8.1, 3.9.1, 4.0.1, 5.0.2, 6.0.1
-
Clang, C++0x: 3.0
-
Clang, C++11: 3.0, 3.1, 3.2, 3.3, 3.4, 4.0.1, 6.0.1
-
Clang, C++14: 3.5.0, 3.6.0, 3.7.1, 3.8.0, 3.9.1, 4.0.0, 4.0.1, 5.0.2,
6.0.1, 7.0.0
-
Clang, C++17: 5.0.2, 6.0.1
-
GCC: 4.4.7, 4.5.3, 4.6.3, 4.9.4, 5.4.0, 5.5.0, 8.0.1
-
GCC, C++0x: 4.4.7
-
GCC, C++11: 4.7.3, 4.8.5, 4.9.4, 5.4.0, 6.4.0, 7.1.0, 8.0.1
-
GCC, C++14: 5.4.0, 5.5.0, 6.3.0, 6.4.0, 7.1.0, 7.3.0, 8.0.1, 8.1.0
-
GCC, C++17: 7.3.0, 8.0.1
-
Intel, C++14: 18.0
-
OS X:
-
Apple Clang: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++11: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++14: 9.0.0, 9.1.0, 10.0.0
-
Apple Clang, C++17: 9.1.0, 10.0.0
-
Apple Clang, C++1z: 9.0.0
-
Apple Clang, C++2a: 10.0.0
-
Windows:
-
GCC: 3.4.5, 4.1.2, 4.2.4, 4.3.3, 4.4.0, 4.5.4
-
GCC, C++0x: 4.6.4
-
GCC, C++11: 4.7.3, 4.8.1, 4.9.3
-
GCC, C++14: 5.1.0, 5.2.0, 5.3.0, 6.1.0, 6.2.0, 6.3.0, 6.4.0
-
GCC, C++17: 7.1.0, 7.2.0, 7.3.0
-
Visual C++: 7.1, 8.0, 9.0, 10.0, 11.0, 12.0, 14.0, 14.1
-
FreeBSD:
-
Clang: 4.0.0
-
Clang, C++11: 4.0.0
-
Clang, C++14: 4.0.0
-
Clang, C++1z: 4.0.0
Acknowledgements
Daniel James, Vladimir Prus, Marshall Clow and Michael Caisse managed this
release.
