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Update Boost 1.85 release notes

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Ion Gaztañaga
2024-01-02 14:14:18 +01:00
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@ -3890,6 +3890,25 @@ to be inserted in intrusive containers are allocated using `std::vector` or `std
[section:release_notes Release Notes]
[section:release_notes_boost_1_85_00 Boost 1.85 Release]
* Potentially breaking: Unordered containers use now by default an internal a `boost::hash`-protocol compatible internal hash functor.
* Reasons:
* Since Boost 1.84 Boost.ContainerHash requires C++11, breaking Boost.Intrusive C++03 users.
* To avoid header inclusion dependency on Boost.ContainerHash, which indirectly also brings other libraries (Boost.Describe, Boost.Mp11...).
* The new default hash function:
* Handles scalar types directly (in case scalar types are used with `key_of_value`) with trivial hashes (similar to `boost::hash`).
* For other types (most Boost.Intrusive users are here), uses ADL-based `hash_function` call, just like `boost::hash`.
* If that ADL lookup fails, forward declares `boost::hash` and calls through an object of that type. If the user has included `boost/container_hash/hash.hpp`
before or after including Boost.Intrusive, `boost::hash` will be properly called.
* It's possible that some Boost.Intrusive users were using Boost.ContainerHash functions/features without including the needed
`boost/container_hash/hash.hpp` header, since it was indirectly included through Boost.Intrusive. Those users will need to
explicitly include `boost/container_hash/hash.hpp`to obtain Boost.ContainerHash features.
* Boost.Intrusive no longer depends on Boost.StaticCast.
[endsect]
[section:release_notes_boost_1_82_00 Boost 1.82 Release]
* Fixed bugs: