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Boost 1.90.0 Release Notes
by Sam Darwin 21 Aug '25

21 Aug '25

Boost 1.90.0 should be able to use the new process for Release Notes. This is already enabled in the code. - Create a release notes file boost_1_90_0.adoc at https://github.com/boostorg/website-v2-docs/tree/develop/release-notes/boos… . PRs go to the 'develop' branch. - Admins merge to the master branch of website-v2-docs once a week. - Github Actions automatically uploads that to s3. /release-notes/master/boost_1_90_0.adoc - website-v2 versions/releases.py will discover the adoc. If that file exists it takes precedence over the previous methods. Let's be sure a file is there during the beta release.

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[Release] The master branch is now open
by Marshall Clow 15 Aug '25

15 Aug '25

Thank to everyone for their patience. The next release cycle will begin in late October — The release managers

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[release] Boost 1.89.0
by Marshall Clow 15 Aug '25

15 Aug '25

Release 1.89.0 of the Boost C++ Libraries is now available. These open-source libraries work well with the C++ Standard Library, and are usable across a broad spectrum of applications. The Boost license encourages both commercial and non-commercial use. The release contains one new library: * Bloom: Bloom filters, from Joaquín M López Muñoz. as well as numerous enhancements and bug fixes for existing libraries. For details, including download links, see <http://www.boost.org/users/news/version_1.89.0> You can also download directly from: <https://archives.boost.io/release/1.89.0/source/> To install this release on your system, see <http://www.boost.org/doc/libs/release/more/getting_started/index.html> Thanks to everyone who participated in this release. -- The Boost Release Team Marshall Clow, Glen Fernandes, Ion Ion Gaztañaga

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Updated Release Links
by Robert Beeston 14 Aug '25

14 Aug '25

Good day, There were some issues with the release links, the corrected ones are below: For details, including download links, see https://www.boost.org/releases/1.89.0/ You can also download directly from: https://archives.boost.io/release/1.89.0/source To install this release on your system, see http://www.boost.org/doc/user-guide/getting-started.html *Rob Beeston* Creative Director C++ Alliance cppalliance.org

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Release Report for v1.89
by Robert Beeston 14 Aug '25

14 Aug '25

Here is the link for the 1.89 Release Report: https://downloads.cppalliance.org/reports/boost_1_89_0_release_report.pdf Please let us know if you have suggestions for future reports! *Rob Beeston* Creative Director C++ Alliance cppalliance.org

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Why no "w != NULL" assertion before boost/intrusive/rbtree_algorithms.hpp:511 like before the line 476?
by achinkoff＠gmail.com 12 Aug '25

12 Aug '25

Boost version: latest release file: boost/intrusive/rbtree_algorithms.hpp function: rebalance_after_erasure_restore_invariants in this if-branch ``` if(x == x_parent_left){ //x is left child ``` there is "w != NULL" assertion before variable 'w' access: ``` BOOST_INTRUSIVE_INVARIANT_ASSERT(w); if(NodeTraits::get_color(w) == NodeTraits::red()){ ``` but in else-branch there is no same assertion before variable 'w' access: ``` if(NodeTraits::get_color(w) == NodeTraits::red()){ ``` Why? Are there no assertion in else-branch intentionally due to the rbtree structure itself? Thanks.

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[release] Master branch is now closed for the release
by Marshall Clow 07 Aug '25

07 Aug '25

Master is closed for all changes. See the release schedule at http://www.boost.org/calendar — The release managers

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C++26 Reflection in Boost
by Vinnie Falco 06 Aug '25

06 Aug '25

Which Boost libraries would benefit from implementing C++26 reflection? For my libraries that includes: Boost.JSON what other libraries?

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[release] The Master branch will be closing for the 1.89.0 release on Wednesday, 6-August
by Marshall Clow 06 Aug '25

06 Aug '25

Calendar is here: https://www.boost.org/calendar Current status of the master branch: Master is open for bug fixes and documentation updates. Other changes by permission of a release manager. — The release managers

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New and Improved Decimal Library
by Matt Borland 02 Aug '25

02 Aug '25

It has been about 6 months since the indeterminate end of the Decimal review, but Chris and I wanted to announce the newest major version of the library (v5.0.0). What has changed? Quite a lot: Breaking Changes: - Based on bitwise comparisons with other similar libraries and database software, we have changed the internal encoding of our IEEE 754-compliant types - We spent about 3 months optimizing just back end integer types that are now used throughout the library and as the internals of decimal128_t - We have changed the type names to better match conventions: - decimalXX is now decimalXX_t - decimalXX_fast is now decimal_fastXX_t - The headers have been similarly renamed, and can now be used independently instead of requiring the monolith based on feedback in Review - Constructors have been simplified to reduce confusion Other Changes: - The doc content have been overhauled thanks to feedback from Peter Turcan and others during the review - The docs are no longer a single long page of Asciidoc; we have moved to Antora. Thanks to Joaquín and Christian for making it trivial to copy from Unordered to make that happen. - https://develop.decimal.cpp.al/ - We now support formatting with {fmt} - Benchmarks have been expanded to include GCC _Decimal types, and Intel's libbid. I think people should be pleased with the results now, since that was a huge point of contention at the end of the review - Every post-review issue John was kind enough to consolidate and open have been addressed Thanks to all those that helped make the library better than it was. Let us know if you find any new issues, or need a feature, as you try the new version. Chris and I are thinking about doing the re-review in the Fall; stay tuned. Matt

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