merge-script c57fbbe99d Merge bitcoin/bitcoin#31650: refactor: Avoid copies by using const references or by move-construction
fa64d8424b refactor: Enforce readability-avoid-const-params-in-decls (MarcoFalke)
faf0c2d942 refactor: Avoid copies by using const references or by move-construction (MarcoFalke)

Pull request description:

  Top level `const` in declarations is problematic for many reasons:

  * It is often a typo, where one wanted to denote a const reference. For example `bool PSBTInputSignedAndVerified(const PartiallySignedTransaction psbt, ...` is missing the `&`. This will create a redundant copy of the value.
  * In constructors it prevents move construction.
  * It can incorrectly imply some data is const, like in an imaginary example `std::span<int> Shuffle(const std::span<int>);`, where the `int`s are *not* const.
  * The compiler ignores the `const` from the declaration in the implementation.
  * It isn't used consistently anyway, not even on the same line.

  Fix some issues by:

  * Using a const reference to avoid a copy, where read-only of the value is intended. This is only done for values that may be expensive to copy.
  * Using move-construction to avoid a copy
  * Applying `readability-avoid-const-params-in-decls` via clang-tidy

ACKs for top commit:
  l0rinc:
    diff reACK fa64d8424b
  hebasto:
    ACK fa64d8424b, I have reviewed the code and it looks OK.
  sedited:
    ACK fa64d8424b

Tree-SHA512: 293c000b4ebf8fdcc75259eb0283a2e4e7892c73facfb5c3182464d6cb6a868b7f4a6682d664426bf2edecd665cf839d790bef0bae43a8c3bf1ddfdd3d068d38
2026-01-19 11:44:04 +01:00
2025-08-07 11:48:29 +01:00
2023-06-01 23:35:10 +05:30
2025-12-29 17:50:43 +00:00
2025-12-29 17:50:43 +00:00
2025-06-19 11:22:14 +01:00

Bitcoin Core integration/staging tree

https://bitcoincore.org

For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.

What is Bitcoin Core?

Bitcoin Core connects to the Bitcoin peer-to-peer network to download and fully validate blocks and transactions. It also includes a wallet and graphical user interface, which can be optionally built.

Further information about Bitcoin Core is available in the doc folder.

License

Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/license/MIT.

Development Process

The master branch is regularly built (see doc/build-*.md for instructions) and tested, but it is not guaranteed to be completely stable. Tags are created regularly from release branches to indicate new official, stable release versions of Bitcoin Core.

The https://github.com/bitcoin-core/gui repository is used exclusively for the development of the GUI. Its master branch is identical in all monotree repositories. Release branches and tags do not exist, so please do not fork that repository unless it is for development reasons.

The contribution workflow is described in CONTRIBUTING.md and useful hints for developers can be found in doc/developer-notes.md.

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Testing and code review is the bottleneck for development; we get more pull requests than we can review and test on short notice. Please be patient and help out by testing other people's pull requests, and remember this is a security-critical project where any mistake might cost people lots of money.

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Developers are strongly encouraged to write unit tests for new code, and to submit new unit tests for old code. Unit tests can be compiled and run (assuming they weren't disabled during the generation of the build system) with: ctest. Further details on running and extending unit tests can be found in /src/test/README.md.

There are also regression and integration tests, written in Python. These tests can be run (if the test dependencies are installed) with: build/test/functional/test_runner.py (assuming build is your build directory).

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Changes should be tested by somebody other than the developer who wrote the code. This is especially important for large or high-risk changes. It is useful to add a test plan to the pull request description if testing the changes is not straightforward.

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Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.

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Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.

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