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W. J. van der Laan e20745c1bd Merge bitcoin/bitcoin#22029 : [fuzz] Improve transport deserialization fuzz test coverage `e337145577` [fuzz] Occasional valid magic bytes for transport serialization test (Dhruv Mehta) `35571d8d9e` [fuzz] Occasional valid checksum for transport serialization fuzz test (Dhruv Mehta) `654472a461` [fuzz] Add serialization to deserialization test (Dhruv Mehta) Pull request description: This PR has 3 commits that increase the fuzz test coverage: Before commit 1: ``` #306853 REDUCE cov: 798 ft: 5820 corp: 150/375Kb lim: 68333 exec/s: 1382 rss: 461Mb L: 254/63171 MS: 1 EraseBytes- #1453105 REDUCE cov: 798 ft: 5820 corp: 150/369Kb lim: 79613 exec/s: 1467 rss: 461Mb L: 6027/60873 MS: 1 EraseBytes- ``` After commit 1 (adds serialization to de-serialization test): ``` #303389 NEW cov: 1202 ft: 8382 corp: 157/382Kb lim: 68189 exec/s: 1451 rss: 447Mb L: 1386/65459 MS: 1 CopyPart- #1428759 REDUCE cov: 1202 ft: 8512 corp: 169/389Kb lim: 78749 exec/s: 1528 rss: 463Mb L: 1627/60488 MS: 1 EraseBytes- ``` After commit 2 (provides an occasional checksum assist to the fuzzer inputs): ``` #304820 NEW cov: 1440 ft: 4452 corp: 92/12551b lim: 2237 exec/s: 3386 rss: 486Mb L: 47/1111 MS: 1 ChangeByte- #1416181 REDUCE cov: 1442 ft: 5681 corp: 125/59Kb lim: 4096 exec/s: 3522 rss: 535Mb L: 2164/4049 MS: 1 EraseBytes- ``` After commit 3 (provides an occasional magic bytes assist to the fuzzer inputs): ``` #302684 NEW cov: 1454 ft: 3936 corp: 84/7056b lim: 2424 exec/s: 4146 rss: 477Mb L: 65/1108 MS: 3 CopyPart-CrossOver-CMP- DE: "\x0e\x00\x00\x00"- #1383925 REDUCE cov: 1454 ft: 4828 corp: 102/14573b lim: 4096 exec/s: 3954 rss: 534Mb L: 116/4050 MS: 2 EraseBytes-ChangeByte- ``` If reviewers only accept the first commit, the seeds are not invalidated and new seeds are at: https://github.com/bitcoin-core/qa-assets/pull/61. In this case, we can also revert the test name change. If reviewers accept all three commits, the existing seeds are invalidated. ACKs for top commit: practicalswift: Tested ACK `e337145577` Tree-SHA512: d37f06eea0249322b00a99c4827359eb53aeb711751e5571f4681eeca06dc257e0c4cd4887150fc37cc2f689e26986112d768066ad274361615ba9b6a522c61a		2021-05-27 15:02:57 +02:00
.github	doc: Remove label from good first issue template	2020-08-24 09:31:24 +02:00
.tx	qt: Bump transifex slug for 22.x	2021-04-21 13:46:41 +02:00
build-aux/m4	build: improve macro for testing -latomic requirement	2021-05-11 20:07:20 +02:00
build_msvc	Merge bitcoin/bitcoin#21817 : refactor: Replace &foo[0] with foo.data()	2021-05-05 18:24:09 +02:00
ci	Merge bitcoin/bitcoin#21749 : test: Bump shellcheck version	2021-05-10 13:49:50 +02:00
contrib	Merge bitcoin/bitcoin#22060 : contrib: add torv3 seed nodes for testnet, drop v2 ones	2021-05-27 11:25:29 +02:00
depends	build: libevent 2.1.12-stable	2021-05-18 10:19:10 +08:00
doc	doc: describe in fuzzing.md how to reproduce a CI crash	2021-05-25 15:18:50 +02:00
share	qt: Extract translations correctly from UTF-8 formatted source	2021-05-17 13:21:13 +02:00
src	Merge bitcoin/bitcoin#22029 : [fuzz] Improve transport deserialization fuzz test coverage	2021-05-27 15:02:57 +02:00
test	Merge bitcoin/bitcoin#18418 : wallet: Increase OUTPUT_GROUP_MAX_ENTRIES to 100	2021-05-26 19:32:51 +08:00
.appveyor.yml	Update msvc build to use Qt5.12.10 binaries.	2021-04-19 16:41:50 +01:00
.cirrus.yml	ci: Bump multiprocess memory	2021-05-25 16:57:29 +02:00
.editorconfig	Add EditorConfig file.	2021-02-10 08:00:06 +01:00
.gitattributes	Separate protocol versioning from clientversion	2014-10-29 00:24:40 -04:00
.gitignore	build: add *~ to .gitignore	2021-05-12 18:10:47 +02:00
.python-version	Bump minimum python version to 3.6	2020-11-09 17:53:47 +10:00
.style.yapf	test: .style.yapf: Set column_limit=160	2019-03-04 18:28:13 -05:00
autogen.sh	scripted-diff: Bump copyright of files changed in 2019	2019-12-30 10:42:20 +13:00
configure.ac	Merge bitcoin/bitcoin#21788 : build: Silence [-Wunused-command-line-argument] warnings	2021-05-25 16:03:26 +08:00
CONTRIBUTING.md	doc: Clarify that squashing should happen before review	2021-02-22 09:53:01 +01:00
COPYING	doc: Update license year range to 2021	2020-12-30 16:24:47 +01:00
INSTALL.md	Update INSTALL landing redirection notice for build instructions.	2016-10-06 12:27:23 +13:00
libbitcoinconsensus.pc.in	build: remove libcrypto as internal dependency in libbitcoinconsensus.pc	2019-11-19 15:03:44 +01:00
Makefile.am	Makefile.am: use APP_DIST_DIR instead of hard-coding dist	2021-05-13 15:41:56 -04:00
README.md	doc: Rework internal and external links	2021-02-17 09:18:46 +01:00
REVIEWERS	script: update REVIEWERS	2021-05-03 13:16:43 +02:00
SECURITY.md	doc: Remove explicit mention of version from SECURITY.md	2019-06-14 06:39:17 -04:00

README.md

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/.

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.