- Boost - lists.boost.org

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

3 4

[release] Master branch is now open for bug fixes
by Marshall Clow 28 Jul '25

28 Jul '25

Hi, The master branch is now open for bug fixes, test and documentation changes, but please follow the policy described in: https://github.com/boostorg/wiki/wiki/Releases%3A-Beta-Merge-Policy The next deadline: On August 6th, master closes for all changes. As always, the calendar is at https://www.boost.org/calendar — The release managers

7 10

Boost 1.89.0.beta1 Asio potential bug
by Ruben Perez 27 Jul '25

27 Jul '25

I'd like to call attention on this problem I had with Asio, which I think is a legitimate bug: https://github.com/chriskohlhoff/asio/issues/1650 It's currently making Boost.MySQL CIs fail. It'd be good if it could be fixed for the release. Thanks, Ruben.

1 0

[release] Boost 1.89.0 Beta 1 Release Candidate 1 is available
by Marshall Clow 23 Jul '25

23 Jul '25

Available at: https://archives.boost.io/beta/1.89.0.beta1/source/ The SHA256 checksums are as follows: bf45af4a58f39c2ec374ef6e70b26859b786ba2ed087bc869d92a2b4de14e0d2 boost_1_89_0_b1_rc1.zip f255b4a31558b3fb81be1dc7e8b367fb9997dbe5e71da98a730c681377abffa9 boost_1_89_0_b1_rc1.7z 984ee193ddf192795ba635d4c73b2b43e1e596995d7ce5519a3a72fab9bc0b40 boost_1_89_0_b1_rc1.tar.gz 9ece9af2b243f90b76f679b278b512b6589c7843e4dd54cffcb719bbc0801998 boost_1_89_0_b1_rc1.tar.bz2 As always, the release managers would appreciate it if you download the candidate of your choice and give building it a try. Please report both success and failure, and anything else that is noteworthy. -- The Release Managers

7 11

Asio: can a asyn_write handler came after a asyn_read handler?
by Dennis Luehring 22 Jul '25

22 Jul '25

Asio 1.88 im currently trying to understand a TCP server/client implementation at a new customer project the statemachine of the user code bases on the fact that a handler of an async_write needs to always comes before the handler of an async_read i don't think that is guaranteed, is it? this is the redcuded scenario: an async_read wait for a single reply from the connected sever a single async_write is done that make the server reply a single paket in the waiting aysnc_read is it possible that the async_write handler comes after the async_read handler? i had a look at the Asio implementation for Windows and it seems that the write handler will be come before - but im not that deep in the implementation

3 5

Adding optional<T&> find like method to associative containers in boost.
by Ivan Matek 18 Jul '25

18 Jul '25

Hi everybody, I presume somebody thought of this before but for some reason it never happened, but just in case it was never discussed I wonder if people here believe adding an nicer version of find(with different name obviously) to associative containers in boost would be beneficial? Since boost::optional allows references this would work. I presume naming is what most people will have strong feeling about. I personally prefer ofind/oat since I love short names, Barry suggested different names in his blog <https://brevzin.github.io/c++/2023/05/23/map-api/>, e.g. try_at. boost::optional did not get all the updates C++23 std::optional got, e.g. transform that make this usage compose nicely, but those could be added to boost::optional.

13 85

[release] Boost 1.89.0 beta 1 released
by Marshall Clow 17 Jul '25

17 Jul '25

Boost release 1.88.0 beta 1 is now available at: https://archives.boost.io/beta/1.89.0.beta1/source/ The SHA256 checksums are: 9ece9af2b243f90b76f679b278b512b6589c7843e4dd54cffcb719bbc0801998 boost_1_89_0_b1.tar.bz2 bf45af4a58f39c2ec374ef6e70b26859b786ba2ed087bc869d92a2b4de14e0d2 boost_1_89_0_b1.zip f255b4a31558b3fb81be1dc7e8b367fb9997dbe5e71da98a730c681377abffa9 boost_1_89_0_b1.7z 984ee193ddf192795ba635d4c73b2b43e1e596995d7ce5519a3a72fab9bc0b40 boost_1_89_0_b1_rc1.tar.gz Release notes (still need updates): https://original.boost.org/users/history/version_1_89_0.html Please try the beta and report any problems you encounter. Thanks to everyone who contributed to the release. -- Boost Release Team

1 0

Asio and post-quantum cryptography
by Jonathan Wakely 17 Jul '25

17 Jul '25

Hi, I am trying to find out if Asio is usable with new post-quantum cryptographic algorithms in OpenSSL, e.g. when using TLS 1.3 connections and pure ML-DSA TLS certificates. The main question is whether Asio is affected by the much larger size of the new certificate types. My understanding is that Asio doesn't care about those sizes, it has no hardcoded buffers for keys and certs, and just uses buffers provided by users of the library. So if a user wants to support larger certs, they need to provide larger buffers, and Asio will pass those buffers through to OpenSSL. But I don't know if any new member functions might be needed for the ssl context object. Has anybody tried using Asio with post-quantum support in openssl? Or is it something that will take new development effort in Asio? Thanks, Jonathan (apologies if you get this mail twice, I think my first attempt didn't get through because I sent from a different address that isn't subscribed)

2 1

[1.89] Authors: please provide your release notes
by Joaquin M López Muñoz 11 Jul '25

11 Jul '25

Procedure is as usual, submit a PR against https://github.com/boostorg/website/blob/master/feed/history/boost_1_89_0.q… Thank you! Joaquín M López Muñoz

1 0

[Release] Master branch is now closed for the beta release
by Marshall Clow 10 Jul '25

10 Jul '25

Master is closed for all changes. See the release schedule at: https://www.boost.org/calendar -- Release managers

1 0