c263c3d7d2
5786a818e1a96bc1dd65b0e81b05998876357a74 Verify that all validation flags are backward compatible (gzhao408) b10ce9aa48c8937cb91fca05e29c68098a364d93 [test] check verification flags are minimal/maximal (gzhao408) a260c22cad0672dda11f42f649ebdc7cfa53b16a [test] Check for invalid flag combinations (gzhao408) a7098a2a8d2d23ee3be1d71ab8c71475bf5a31ee [refactor] use CheckTxScripts, TrimFlags, FillFlags (gzhao408) 7a77727b2f66f3d723e03e917f0cabb459c49d62 Apply minimal validation flags to tx_invalid tests (gzhao408) 9532591bedaecf7c2debe779dec0a0debec2623b [test] add BADTX setting for invalid txns that fail CheckTransaction (gzhao408) 4c06ebf1281f0f387ab7493fe15176a05247525e [test] fix two witness tests in invalid tests with empty vout (gzhao408) 158a0b268ca2f73a5d504791359d1eff2cf27715 Apply maximal validation flags to tx_valid tests (gzhao408) 0a76a39b633760d4668d39859605c05629ee0025 [test] fix CSV test missing OP_ADD (gzhao408) 19db590d044efe7d474a16720e5b56e7b55db54c [test] remove unnecessary OP_1s from CSV and CLTV tests (gzhao408) Pull request description: This uses the first 4 commits of #15045, rebased and added some comments. The diff is quite large already and I want to make it easy to review, so I'm splitting it into 2 PRs (transaction and script). Script one is WIP, I'll link it when I open it. Interpretation of scripts is dependent on the script verification flags passed in. In tests, we should always apply **maximal** verification flags when checking that a transaction is **valid**; any additional flags should invalidate the transaction. A transaction should not be valid because we forgot to include a flag, and we should apply all flags by default. We should apply **minimal** verification flags when asserting that a transaction is **invalid**; if verification flags are applied, removing any one of them should mean the transaction is valid. New verify flags must be backwards compatible; tests should check backwards compatibility and apply the new flags by default. All `tx_invalid` tests should continue to be invalid with the exact same verify flags. All `tx_valid` tests that don't pass with new flags should _explicitly_ indicate that the flags need to be excluded, and fail otherwise. 1. Flip the meaning of `verifyFlags` in tx_valid.json to mean _excluded_ verification flags instead of included flags. Edit the test data accordingly. 2. Trim unneeded flags from tx_invalid.json. 3. Add check to verify that tx_valid tests have maximal flags and tx_invalid tests have minimal flags. 4. Add checks to verify that flags are soft forks (#10699) i.e. adding any flag should only decrease the number of acceptable scripts. Test by adding/removing random flags. ACKs for top commit: achow101: ACK 5786a818e1a96bc1dd65b0e81b05998876357a74 laanwj: ACK 5786a818e1a96bc1dd65b0e81b05998876357a74 Tree-SHA512: 19195d8cf3299e62f47dd3443ae4a95430c5c9d497993a18ab80de9e24b1869787af972774993bf05717784879bc4592fdabaae0fddebd437963d8f3c96d9a73
Bitcoin Core integration/staging tree
For an immediately usable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/.
Further information about Bitcoin Core is available in the doc folder.
What is Bitcoin?
Bitcoin is an experimental digital currency that enables instant payments to anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate with no central authority: managing transactions and issuing money are carried out collectively by the network. Bitcoin Core is the name of open source software which enables the use of this currency.
For more information read the original Bitcoin whitepaper.
License
Bitcoin Core is released under the terms of the MIT license. See COPYING for more information or see https://opensource.org/licenses/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.
Testing
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.
Automated Testing
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 in configure) with: make check. 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: test/functional/test_runner.py
The CI (Continuous Integration) systems make sure that every pull request is built for Windows, Linux, and macOS, and that unit/sanity tests are run automatically.
Manual Quality Assurance (QA) Testing
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.
Translations
Changes to translations as well as new translations can be submitted to Bitcoin Core's Transifex page.
Translations are periodically pulled from Transifex and merged into the git repository. See the translation process for details on how this works.
Important: We do not accept translation changes as GitHub pull requests because the next pull from Transifex would automatically overwrite them again.