Update libmultiprocess subtree to avoid occasional rpc_misc.py timeout #34363

1. 
   ryanofsky commented at 4:48 am on January 21, 2026: contributor

   Includes:

   • https://github.com/bitcoin-core/libmultiprocess/pull/229
   • https://github.com/bitcoin-core/libmultiprocess/pull/223
   • https://github.com/bitcoin-core/libmultiprocess/pull/225
   • https://github.com/bitcoin-core/libmultiprocess/pull/228
   • https://github.com/bitcoin-core/libmultiprocess/pull/230
   • https://github.com/bitcoin-core/libmultiprocess/pull/236
   • https://github.com/bitcoin-core/libmultiprocess/pull/234
   • https://github.com/bitcoin-core/libmultiprocess/pull/196
   • https://github.com/bitcoin-core/libmultiprocess/pull/237

   The last change https://github.com/bitcoin-core/libmultiprocess/pull/237 is expected to fix issue #34187 occasional rpc_misc.py test hang. The other changes are just documentation & ci updates.

   The changes can be verified by running test/lint/git-subtree-check.sh src/ipc/libmultiprocess as described in developer notes and lint instructions

2. Squashed 'src/ipc/libmultiprocess/' changes from a4f92969649..1fc65008f7d

   1fc65008f7d Merge bitcoin-core/libmultiprocess#237: Made SpawnProcess() behavior safe post fork()
   5205a87cd90 test: check SpawnProcess post-fork safety
   69652f0edfa Precompute argv before fork in SpawnProcess
   30a8681de62 SpawnProcess: avoid fd leak on close failure
   d0fc1081d09 Merge bitcoin-core/libmultiprocess#196: ci: Add NetBSD job
   7b171f45bfc Merge bitcoin-core/libmultiprocess#234: doc: Fix typos and grammar in documentation and comments
   861da39cae9 ci: Add NetBSD job
   458745e3940 Fix various typos, spelling mistakes, and grammatical errors in design.md and source code comments.
   585decc8561 Merge bitcoin-core/libmultiprocess#236: ci: Install binary package `capnproto` on OpenBSD instead of building it
   14e926a3ff3 refactor: extract MakeArgv helper
   1ee909393f4 ci: Install binary package `capnproto` on OpenBSD instead of building it
   470fc518d4b Merge bitcoin-core/libmultiprocess#230: cmake: add ONLY_CAPNP target_capnp_sources option
   2d8886f26c4 Merge bitcoin-core/libmultiprocess#228: Add versions.md and version.h files describing version branches and tags
   c1838be565d Merge bitcoin-core/libmultiprocess#225: Improve and document act support
   a173f1704ce Merge bitcoin-core/libmultiprocess#223: ci: Replace nix-shell with equivalent nix develop command
   625eaca42fb Merge bitcoin-core/libmultiprocess#229: Design Documentation Update
   cc234be73a6 Design doc update
   81c652687b8 cmake: add ONLY_CAPNP target_capnp_sources option
   6e01d2d766e Add versions.md and version.h files describing version branches and tags
   4e3f8fa0d2c doc: add instructions for using act
   81712ff6bbf ci: disable KVM and sandbox inside act containers
   18a2237a8ef ci: Replace nix-shell with equivalent nix develop command
   
   git-subtree-dir: src/ipc/libmultiprocess
   git-subtree-split: 1fc65008f7d64161e84c08cbd93109a23dd6a1e9

   7562e2aeed
3. Merge commit '7562e2aeed95b0dc627e8e3a849941992f0189bb' into pr/subtree-7 73d0fe62d3
4. DrahtBot renamed this:
   Update libmultiprocess subtree to avoid occasional rpc_misc.py timeout
   Update libmultiprocess subtree to avoid occasional rpc_misc.py timeout
   on Jan 21, 2026
5. 
   DrahtBot commented at 4:48 am on January 21, 2026: contributor

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Code Coverage & Benchmarks

   For details see: https://corecheck.dev/bitcoin/bitcoin/pulls/34363.

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6. sedited approved
7. 
   sedited commented at 2:50 pm on January 21, 2026: contributor

   ACK 73d0fe62d3db175cfd233d8be47b09d8626cdab2
8. fanquake merged this on Jan 21, 2026
9. fanquake closed this on Jan 21, 2026

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ryanofsky DrahtBot sedited