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Merge #16208: wallet: Consume ReserveDestination on successful CreateTransaction 
e10e1e8db0 Restrict lifetime of ReserveDestination to CWallet::CreateTransaction (Gregory Sanders)
d9ff862f2d CreateTransaction calls KeepDestination on ReserveDestination before success (Gregory Sanders)

Pull request description:

  The typical usage pattern of `ReserveDestination` is to explicitly `KeepDestination`, or `ReturnDestination` when it's detected it will not be used.

  Implementers such as myself may fail to complete this pattern, and could result in key re-use: https://github.com/bitcoin/bitcoin/pull/15557#discussion_r271956393

  Since ReserveDestination is currently only used directly in the `CreateTransaction`/`CommitTransaction` flow(or fee bumping where it's just used in `CreateTransaction`), I instead make the assumption that if a transaction is returned by `CreateTransaction` it's highly likely that it will be accepted by the caller, and the `ReserveDestination` kept. This simplifies the API as well. There are very few cases where this would not be the case which may result in keys being burned.

  Those failure cases appear to be:
  `CommitTransaction` failing to get the transaction into the mempool
  Belt and suspenders check in `WalletModel::prepareTransaction`

  Alternative to https://github.com/bitcoin/bitcoin/pull/15796

ACKs for top commit:
  achow101:
    ACK e10e1e8db0 Reviewed the diff
  stevenroose:
    utACK e10e1e8db0
  meshcollider:
    utACK e10e1e8db0

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.travis Merge #14505: test: Add linter to make sure single parameter constructors are marked explicit 2019-07-08 20:29:00 +02:00
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doc Merge #15891: test: Require standard txs in regtest by default 2019-07-16 16:10:17 -04:00
share Merge #16291: gui: Stop translating PACKAGE_NAME 2019-07-08 13:39:59 -04:00
src Merge #16208: wallet: Consume ReserveDestination on successful CreateTransaction 2019-07-17 19:45:55 +12:00
test Merge #15891: test: Require standard txs in regtest by default 2019-07-16 16:10:17 -04:00
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.travis.yml Merge #16338: test: Disable other targets when enable-fuzz is set 2019-07-10 12:23:35 +02:00
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README.md

Bitcoin Core integration/staging tree

https://bitcoincore.org

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, as well as an immediately useable, binary version of the Bitcoin Core software, see https://bitcoincore.org/en/download/, or read the original 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 and tested, but is not guaranteed to be completely stable. Tags are created regularly to indicate new official, stable release versions of Bitcoin Core.

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, that are run automatically on the build server. These tests can be run (if the test dependencies are installed) with: test/functional/test_runner.py

The Travis CI system makes 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.

Translators should also subscribe to the mailing list.