depends: Update `boost` package to 1.92.0 #35961

From the Boost.MultiIndex library Release Notes:

Fixed a performance issue with hashed indices when rehashing at very large container sizes.

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Code Coverage & Benchmarks

For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/35961.

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My Guix build:

aarch64
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Tested ACK 94cb6594573876230840f0c8a563896c8700921b

Debian 13 / GCC 14.2.0.

Independent SHA-256 of boost-1.92.0-cmake.tar.gz matches the PR and the GitHub release sidecar:

f51707c27359a0df0cac1beada86de31bb5eed5e8285592dadec384df99c2984

Tag is boost-1.92.0 (no -1 re-release, unlike 1.91.0-1). BOOST_INCLUDE_LIBRARIES=multi_index;test still configures. Installed BOOST_VERSION is 109200. The 1.92 hashed-index reserve_for_insert floor (bucket_count()+1) is in the headers we built.

CMake used the depends 1.92 package (Boost_DIR=.../depends/x86_64-pc-linux-gnu/lib/cmake/Boost-1.92.0); test_bitcoin compiled hashed_index.hpp from depends/.../boost/include/.

Both hashed indices (txid, wtxid) live in CTxMemPool::indexed_transaction_set. The rehash bug that 1.92 fixes shows up around 50M elements; default -maxmempool=300 caps the pool in the low millions, more than an order of magnitude below where the float mantissa starts rounding. Still a fine depends bump.

make -C depends -j8 boost
cmake -B build -DCMAKE_BUILD_TYPE=RelWithDebInfo -DBUILD_GUI=OFF -DBoost_ROOT=$PWD/depends/x86_64-pc-linux-gnu
cmake --build build -j8 --target test_bitcoin
build/bin/test_bitcoin --run_test=mempool_tests,orphanage_tests,txrequest_tests

14 tests, no errors.

Guix builds for the default HOSTS are running; I will follow up with hashes when they finish.

@151henry151 your review comment reads like LLM output. The entire comment could be collapsed into: Checked the hash, did a depends build, and ran the test framework. What is a "GitHub release sidecar"? Please read our AI policy again.

when rehashing at very large container sizes.

Note that "very large" here is 200-400 million elements (https://github.com/boostorg/multi_index/pull/94#issuecomment-4338298921).

Sorry — my comment was too long, and "GitHub release sidecar" isn't a real thing. I meant the SHA-256 digest GitHub shows next to the release asset, which I compared against the hash in the PR.

The 50M I cited is the first size the multi_index#94 synthetic repro broke; 200–400 million is the production pain in that same thread. Neither is a mempool size.

Guix hashes match hebasto's:

<details> <summary>My Guix build</summary>

x86_64
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</details>

my guix Build Output

Host architecture: aarch64 Commit: 94cb659

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