Release Notes

Boost C++ Libraries

Release Notes

Boost 1.93 Release

Fixed stability bugs both in adaptive_merge and adaptive_sort.
Significantly improved performance of adaptive algorithms. Up to 4x faster in some corner cases.
Fixed bugs in internal traits and compiler-intrinsic detection.
unique_ptr is now marked with the trivial_abi attribute when the compiler supports it (Clang targeting Itanium ABI), so it is passed and returned in registers. This changes the calling convention so it must be consistent when passing across translation units. Define BOOST_MOVE_DISABLE_TRIVIAL_ABI to keep the old calling convention.

Boost 1.91 Release

Fixed bugs:
- Git Issue #64: "Add std::pair specializations for trivial type traits".

Boost 1.90 Release

Fixed bugs:
- Git Issue #61: "launder_cast triggers warning about dropping const and volatile qualifiers".

Boost 1.88 Release

Fixed bugs:
- Git Pull #58: "Avoid -Wdeprecated-variadic-comma-omission with GCC 15 trunk -std=c++26".

Boost 1.87 Release

Fixed bugs:
- Git Issue #56: "Forward declarations of std types cause compilation errors on some platforms".
- Git Issue #57: "<boost/move/adl_move_swap.hpp> fails to compile under libc++-19".

Forward declarations of std types cause compilation errors on some platforms #292

Boost 1.85 Release

Fixed bugs:
- Git Issue #51: "Compiler deprecation warnings with VS2019 Version 16.10 and boost/move headers".

Boost 1.81 Release

Fixed bugs:
- Git Issue #49: "clang-15 warnings about deprecated type traits intrinsics".

Boost 1.79 Release

The library now compiles without warnings with GCC's -Wcast-align=strict
Fixed bugs:

Boost 1.78 Release

Fixed bugs:
- Git Issue #45: "Sort/merge bugs that affect boost::container::flat_map".

Boost 1.77 Release

Fixed bugs:
- Git Issue #40: "Warning 4675 is not defined in MSVC".
- Git Issue #42: "<boost/move/unique_ptr.hpp> fails when BOOST_MOVE_USE_STANDARD_LIBRARY_MOVE is set".

Boost 1.76 Release

Fixed bugs:
- Git Issue #35: "New nothrow move traits are incomplete".

Boost 1.75 Release

Fixed bugs:
- Git Issue #30: "(void) C-cast is a non-portable way of suppressing compiler warnings".

Boost 1.73 Release

Fixed bugs:
- Git Issue #28: "Warning C4624 on MSVC 2019".

Boost 1.71 Release

Fixed bugs:
- Git Issue #26: "Invalid iterator increment/decrement in the last iteration of adaptive_sort_combine_blocks".

Boost 1.70 Release

Removed support for deprecated GCC compilers.
Fixed bugs:
- Git Pull #23: "Add minimal cmake file".
- Git Issue #25: "adaptive_merge is broken for iterator_traits<RandIt>::size_type != std::size_t".

Boost 1.69 Release

Deprecated GCC < 4.3 and MSVC < 9.0 (Visual 2008) compilers.
Fixed bugs:
- Git Issue #19: "Compilation error with IBM xlC++ on AIX".

Boost 1.67 Release

Added pdqsort and heap_sort implementations, initially as a detail, they will be official in the future once better tested.

Boost 1.66 Release

Fixed bugs:
- Git Pull #14: "Workaround for bogus Wignored-attributes warning on GCC 6.x/7.x".
- Git Issue #15: "Incorrect merge in adaptive_merge when the number of unique items is limited".

Boost 1.65 Release

Fixed bug:
- Git Pull #11: "replace 'std::random_shuffle' by '::random_shuffle'".
- Git Pull #12: "Adds support for MSVC ARM64 target'".

Boost 1.64 Release

Fixed bug:
- #12920 "movelib::unique_ptr: incorrect pointer type for nested array".

Boost 1.62 Release

Documented new limitations reported in Trac tickets #12194 "Copy assignment on moveable and copyable classes uses wrong type" and #12307 "Copy assignment from const ref handled differently in C++11/C++98".

Boost 1.61 Release

Experimental: asymptotically optimal bufferless merge and sort algorithms: adaptive_merge and adaptive_sort.
Fixed bug:
- Trac #11758: "BOOST_MOVABLE_BUT_NOT_COPYABLE doesn't reset private access with rvalue ref version",

Boost 1.60 Release

Fixed bug:
- Trac #11615: "Boost.Move should use the qualified name for std::size_t in type_traits.hpp",

Boost 1.59 Release

Changed unique_ptr's converting constructor taking the source by value in C++03 compilers to allow simple conversions from convertible types returned by value.
Fixed bug:
- Trac #11229: "vector incorrectly copies move-only objects using memcpy",
- Trac #11510: "unique_ptr: -Wshadow warning issued",

Boost 1.58 Release

Added BOOST_MOVE_BASE utility.
Added adl_move_swap utility.
Reduced dependencies on other Boost libraries to make the library a bit more lightweight.
Fixed bugs:
- Trac #11044: "boost::rv inherits off union, when such passed as template argument".

Boost 1.57 Release

Added unique_ptr smart pointer. Thanks to Howard Hinnant for his excellent unique_ptr emulation code and testsuite.
Added move_if_noexcept utility. Thanks to Antony Polukhin for the implementation.
Fixed bugs:

Boost 1.56 Release

Boost 1.55 Release

Fixed bugs #7952, #8764, #8765, #8842, #8979.

Boost 1.54 Release

Fixed bugs #7969, #8231, #8765.

Boost 1.53 Release

Better header segregation (bug #6524).
Small documentation fixes
Replaced deprecated BOOST_NO_XXXX with newer BOOST_NO_CXX11_XXX macros.
Fixed #7830, #7832.

Boost 1.51 Release

Fixed bugs #7095, #7031.

Boost 1.49 Release

Fixed bugs #6417, #6183, #6185, #6395, #6396,