Making the `GenerateRandomKey` helper available to other modules via
key.{h.cpp} allows us to create random private keys directly at
instantiation of CKey, in contrast to the two-step process of creating
the instance and then having to call `MakeNewKey(...)`.
b335710782c2545e6eeed67b5e1763c07eab26b0 depends: patch around non-determinism in qt (fanquake)
e8ecec45756d7121edfaa1321c597d88ce7ec6db build: rename native_clang to native_llvm (fanquake)
b0c290340c1e1398dc9eb51b3e48a040de3f47d6 Revert "build: Patch Qt to handle minimum macOS version properly" (fanquake)
558250dec15e43b66c7b5a96543dd184925b6209 guix: use clang-toolchain-17 for macOS build (fanquake)
5ddd7c65b415629d4b57fb238d5fd39b049ccf79 build: Bump `native_clang` up to 17.0.6 (Hennadii Stepanov)
Pull request description:
This is the last step before #21778. We need LLVM 17.x so that lld has `-fixup_chains`.
ACKs for top commit:
theuni:
ACK b335710782c2545e6eeed67b5e1763c07eab26b0.
TheCharlatan:
ACK b335710782c2545e6eeed67b5e1763c07eab26b0
Tree-SHA512: 8142956196a481178f360258c2e4d924178d552966b713323f29f2deba7e5ec73a3da1c9d79d97c9e7f6aa18ed7429cd6660826aa633e6dde1ac56000b9ad57f
fae526345de539ab8f9b80100f6dfbe8e1d3284b Allow std::byte C-style array serialization (MarcoFalke)
fa898e6836a8fc2c7b6c8c15ad21818b16a89863 refactor: Print verbose serialize compiler error messages (MarcoFalke)
Pull request description:
Currently, trying to serialize an object that can't be serialized will fail with a short error message. For example, the diff and the error message:
```diff
diff --git a/src/test/serialize_tests.cpp b/src/test/serialize_tests.cpp
index d75eb499b4..773f49845b 100644
--- a/src/test/serialize_tests.cpp
+++ b/src/test/serialize_tests.cpp
@@ -62,6 +62,8 @@ public:
BOOST_AUTO_TEST_CASE(sizes)
{
+ int b[4];
+ DataStream{} << b << Span{b};
BOOST_CHECK_EQUAL(sizeof(unsigned char), GetSerializeSize((unsigned char)0));
BOOST_CHECK_EQUAL(sizeof(int8_t), GetSerializeSize(int8_t(0)));
BOOST_CHECK_EQUAL(sizeof(uint8_t), GetSerializeSize(uint8_t(0)));
```
```
./serialize.h:765:6: error: member reference base type 'const int[4]' is not a structure or union
765 | a.Serialize(os);
| ~^~~~~~~~~~
```
```
./serialize.h:277:109: error: no matching function for call to 'UCharCast'
277 | template <typename Stream, typename B> void Serialize(Stream& s, Span<B> span) { (void)/* force byte-type */UCharCast(span.data()); s.write(AsBytes(span)); }
| ^~~~~~~~~
```
This is fine. However, it would be more helpful for developers and more accurate by the compiler to explain why each function is not selected.
Fix this by using C++20 concepts where appropriate.
ACKs for top commit:
ajtowns:
reACK fae526345de539ab8f9b80100f6dfbe8e1d3284b
achow101:
ACK fae526345de539ab8f9b80100f6dfbe8e1d3284b
TheCharlatan:
Re-ACK fae526345de539ab8f9b80100f6dfbe8e1d3284b
Tree-SHA512: e03a684ccfcc5fbcad7f8a4899945a05989b555175fdcaebdb113aff46b52b4ee7b467192748edf99c5c348a620f8e52ab98bed3f3fca88280a64dbca458fe8a
e1281f1bbd884f15d40053c9bc24794d0ce9a58a wallet: fix key parsing check for miniscript expressions in `ParseScript` (brunoerg)
Pull request description:
In `ParseScript`, when processing miniscript expressions, the way we check for key parsing error is wrong, the actual code is unreachable because we're checking it into `if (node)` (successful parsing) statement.
ACKs for top commit:
sipa:
utACK e1281f1bbd884f15d40053c9bc24794d0ce9a58a
RandyMcMillan:
utACK e1281f1bbd
achow101:
ACK e1281f1bbd884f15d40053c9bc24794d0ce9a58a
Tree-SHA512: c4b3765d32673928a1f6d84ecbaa311870da9a9625753ed15ea57c802a9f16ddafa48c1dc66c0e4be284c5862e7821ed94135498ed9b9f3d7342a080035da289
cd810075eddd8b1a7139559b475b56126f70a93d fuzz: coinselection, improve `min_viable_change`/`change_output_size` (brunoerg)
Pull request description:
Instead of "randomly" fuzzing `min_viable_change` and `change_output_size`, and since they're correlated, this PR changes the approach to fuzz them according to the logic in `CreateTransactionInternal`.
ACKs for top commit:
murchandamus:
ACK cd810075eddd8b1a7139559b475b56126f70a93d
achow101:
ACK cd810075eddd8b1a7139559b475b56126f70a93d
furszy:
Code ACK cd810075eddd
Tree-SHA512: 4539b469f00cdf666078d80c07ed062726f804e390400348148cd3092db9cdc178c6d00ead39aef19acf97badfb6576ce23546d8967387e81c5398d52d7f4404
19bb65bf255df0f876e37de90fb8c4c6229cdf52 [doc]: add doxygen return comment for CheckPackageLimits (ismaelsadeeq)
Pull request description:
This PR adds a doxygen comment on `CheckPackageLimits` describing what the method returns.
Fixes https://github.com/bitcoin/bitcoin/pull/28863#discussion_r1429805433
ACKs for top commit:
Sjors:
utACK 19bb65bf255df0f876e37de90fb8c4c6229cdf52
Zero-1729:
utACK 19bb65bf255df0f876e37de90fb8c4c6229cdf52
Tree-SHA512: ccf1cc00a44d3fff60f28ad6766019a9f61b349729eab3cb02bc76b13c2e55441348a1602d806e60e4b2eabeb1f5d1ddacddf86c0bcdb78b078bb3a863b650c2
8dec9c560b53488c1e71d8f74241c7dce42cb387 wallet, mempool: propagete `checkChainLimits` error message to wallet (ismaelsadeeq)
Pull request description:
* Requested in [#28391 comment](https://github.com/bitcoin/bitcoin/pull/28391#discussion_r1382997719)
* The error message is static when a new transaction is created and package limit is reached.
`Transaction has too long of a mempool chain`
While the [`CTxMempool::CheckPackageLimits`](5800c558eb/src/txmempool.cpp (L199)) provide explicit information about the error message.
* This PR updates [`CTxMempool::CheckPackageLimits`](5800c558eb/src/txmempool.cpp (L199)) return type to `util::Result<void>`, `CheckPackageLimits` now returns void when package limit is not hit, and returns the error string whenever package limit is hit instead of using out parameter `errString`.
* The PR updates [`checkChainLimits`](5800c558eb/src/node/interfaces.cpp (L703)) return type to `util::Result<void>`.
* Now the wallet `CreateTransactionInternal` will have access to the package limit error string whenever its hit.
* Also Updated functional test to reflect the error message from `CTxMempool::CheckPackageLimits` output.
ACKs for top commit:
glozow:
utACK 8dec9c560b
Sjors:
utACK 8dec9c560b53488c1e71d8f74241c7dce42cb387
TheCharlatan:
Re-ACK 8dec9c560b53488c1e71d8f74241c7dce42cb387
Tree-SHA512: ddeac18aeba6f8e3be0e3fe76bf3db655352e3b415169f1f83ea1e8976a2f3e3de021c8da6880eb8382ab52d545e418e3f4d57adcc68ecb4f390339710ee6f30
b2fc7a2eda103724ac8cbeaf99df3ce6f5b7d974 [fuzz] Improve fuzzing stability for minisketch harness (dergoegge)
Pull request description:
The `minisketch` harness has low stability due to:
* Rng internal to minisketch
* Benchmarkning for the best minisketch impl
Fix this by seeding the rng and letting the fuzzer choose the impl.
Also see #29018.
ACKs for top commit:
maflcko:
review ACK b2fc7a2eda103724ac8cbeaf99df3ce6f5b7d974
Tree-SHA512: 3d81414299c6803c34e928a53bcf843722fa8c38e1d3676cde7fa80923f9058b1ad4b9a2941f718303a6641b17eeb28b4a22eda09678102e9fb7c4e31d06f8f2
ff896d25819da1c1e80591595c922fb093942645 contrib: drop GCC MAX_VERSION to 4.3.0 in symbol-check (fanquake)
Pull request description:
Reflect the actual symbols used, i.e:
```bash
bitcoind: symbol __bswapsi2 from unsupported version GCC_4.3.0(7)
```
ACKs for top commit:
TheCharlatan:
ACK ff896d25819da1c1e80591595c922fb093942645
Tree-SHA512: b38ff8f4dd78d2d1c9063c53544dc4f240c3043f142e1581f7ba42f088a509293f6f17cc402c60ac82bff3b36668866b87e0e9e4d10d929484bb4c7a3e654f25
Update CheckPackageLimits to use util::Result to pass the error message
instead of out parameter.
Also update test to reflect the error message from `CTxMempool`
`CheckPackageLimits` output.
7b45744df33c6a4759eae1a3984f389cbac837c2 tests: ensure functional tests set permitbaremultisig=1 when needed (Anthony Towns)
7dfabdcf860c529772a54b0e8fa235cbb4a78b4d tests: test both settings for permitbaremultisig in p2sh tests (Anthony Towns)
Pull request description:
Update unit and functional tests so that they continue to work if the default for `-permitbaremultisig` is changed.
ACKs for top commit:
maflcko:
lgtm ACK 7b45744df33c6a4759eae1a3984f389cbac837c2
instagibbs:
crACK 7b45744df3
ajtowns:
> crACK [7b45744](7b45744df3)
achow101:
ACK 7b45744df33c6a4759eae1a3984f389cbac837c2
glozow:
ACK 7b45744df33c6a4759eae1a3984f389cbac837c2, changed default locally and all tests passed
Tree-SHA512: f89f9e2bb11f07662cfd57390196df9e531064e1bd662e1db7dcfc97694394ae5e8014e9d209b9405aa09195bf46fc331b7fba10378065cdb270cbd0669ae904
66667130416b86208e01a0eb5541a15ea805ac26 refactor: Rename fs::path::u8string() to fs::path::utf8string() (MarcoFalke)
856c88776f8486446602476a1c9e133ac0cff510 ArgsManager: return path by value from GetBlocksDirPath() (Vasil Dimov)
fa3d9304e80c214c8b073f12a7f4b08c5a94af04 refactor: Remove pre-C++20 fs code (MarcoFalke)
fa00098e1a493aa3cce20335d18e7f5f2fb7a4a8 Add tests for C++20 std::u8string (MarcoFalke)
fa2bac08c22182e738a8cabf1b24a9dbf3b092d2 refactor: Avoid copy/move in fs.h (MarcoFalke)
faea30227ba633da5ab257d0247853e0927244bb refactor: Use C++20 std::chrono::days (MarcoFalke)
Pull request description:
This:
* Removes dead code.
* Avoids unused copies in some places.
* Adds copies in other places for safety.
ACKs for top commit:
achow101:
ACK 66667130416b86208e01a0eb5541a15ea805ac26
ryanofsky:
Code review ACK 66667130416b86208e01a0eb5541a15ea805ac26. Just documentation change since last review.
stickies-v:
re-ACK 66667130416b86208e01a0eb5541a15ea805ac26
Tree-SHA512: 6176e44f30b310d51632ec2d3827c3819905d0ddc6a4b57acfcb6cfa1f9735176da75ee8ed4a4abd1296cb0b83bee9374cc6f91ffac87c19b63c435eeadf3f46
1ce45baed7dd2da3f1cb85c9c25110e5537451ae rpc: getwalletinfo, return wallet 'birthtime' (furszy)
83c66444d0604f0a9ec3bc3f89d4f1a810b7cda0 test: coverage for wallet birth time interaction with -reindex (furszy)
6f497377aa17cb8a590fd7717fa8ededf4249999 wallet: fix legacy spkm default birth time (furszy)
75fbf444c1e13c6ba0e79a34871534c845a13849 wallet: birth time update during tx scanning (furszy)
b4306e3c8db6cbaedc8845c6d21c750b39f682bf refactor: rename FirstKeyTimeChanged to MaybeUpdateBirthTime (furszy)
Pull request description:
Fixing #28897.
As the user may have imported a descriptor with a timestamp newer
than the actual birth time of the first key (by setting 'timestamp=now'),
the wallet needs to update the birth time when it detects a transaction
older than the oldest descriptor timestamp.
Testing Notes:
Can cherry-pick the test commit on top of master. It will fail there.
ACKs for top commit:
Sjors:
re-utACK 1ce45baed7dd2da3f1cb85c9c25110e5537451ae
achow101:
ACK 1ce45baed7dd2da3f1cb85c9c25110e5537451ae
Tree-SHA512: 10c2382f87356ae9ea3fcb637d7edc5ed0e51e13cc2729c314c9ffb57c684b9ac3c4b757b85810c0a674020b7287c43d3be8273bcf75e2aff0cc1c037f1159f9
6db04be102807ee0120981a9b8de62a55439dabb Get rid of shutdown.cpp/shutdown.h, use SignalInterrupt directly (Ryan Ofsky)
213542b625a6a4885fcbdfe236629a5f381eeb05 refactor: Add InitContext function to initialize NodeContext with global pointers (Ryan Ofsky)
feeb7b816affa790e02e7ba0780c4ef33d2310ff refactor: Remove calls to StartShutdown from KernelNotifications (Ryan Ofsky)
6824eecaf1e74624cf149ed20abd9145c49d614a refactor: Remove call to StartShutdown from stop RPC (Ryan Ofsky)
1d92d89edbb1812dc353084c62772ebb1024d632 util: Get rid of uncaught exceptions thrown by SignalInterrupt class (Ryan Ofsky)
ba93966368d3aaa426b97837ef475ec5aa612f5f refactor: Remove call to ShutdownRequested from IndexWaitSynced (Ryan Ofsky)
42e5829d9710ebebda5de356fab01dd7c149d5fa refactor: Remove call to ShutdownRequested from HTTPRequest (Ryan Ofsky)
73133c36aa9cc09546eabac18d0ea35274dd5d72 refactor: Add NodeContext::shutdown member (Ryan Ofsky)
f4a8bd6e2f03e786a84dd7763d1c04665e6371f2 refactor: Remove call to StartShutdown from qt (Ryan Ofsky)
f0c73c1336bee74fe2d58474ac36bca28c219e85 refactor: Remove call to ShutdownRequested from rpc/mining (Ryan Ofsky)
263b23f0082c60516acced1b03abb8e4d8f9ee46 refactor: Remove call to ShutdownRequested from chainstate init (Ryan Ofsky)
Pull request description:
This change drops `shutdown.h` and `shutdown.cpp` files, replacing them with a `NodeContext::shutdown` member which is used to trigger shutdowns directly. This gets rid of an unnecessary layer of indirection, and allows getting rid of the `kernel::g_context` global.
Additionally, this PR tries to improve error handling of `SignalInterrupt` code by marking relevant methods `[[nodiscard]]` to avoid the possibility of uncaught exceptions mentioned https://github.com/bitcoin/bitcoin/pull/27861#discussion_r1255496707.
Behavior is changing In a few cases which are noted in individual commit messages. Particularly: GUI code more consistently interrupts RPCs when it is shutting down, shutdown state no longer persists between unit tests, the stop RPC now returns an RPC error if requesting shutdown fails instead of aborting, and other failed shutdown calls now log errors instead of aborting.
This PR is a net reduction in lines of code, but in some cases the explicit error handling and lack of global shutdown functions do make it more verbose. The verbosity can be seen as good thing if it discourages more code from directly triggering shutdowns, and instead encourages code to return errors or send notifications that could be translated into shutdowns. Probably a number of existing shutdown calls could just be replaced by better error handling.
ACKs for top commit:
achow101:
ACK 6db04be102807ee0120981a9b8de62a55439dabb
TheCharlatan:
Re-ACK 6db04be102807ee0120981a9b8de62a55439dabb
maflcko:
ACK 6db04be102807ee0120981a9b8de62a55439dabb 👗
stickies-v:
re-ACK 6db04be102807ee0120981a9b8de62a55439dabb
Tree-SHA512: 7a34cb69085f37e813c43bdaded1a0cbf6c53bd95fdde96f0cb45346127fc934604c43bccd3328231ca2f1faf712a7418d047ceabd22ef2dca3c32ebb659e634
98afe7866185ed4157ffc581763e11dc02fcbae0 doc: Update bitcoin-tx replaceable documentation (Kashif Smith)
94feaf2b66d68b3c849375e1d9d3a81c17cd2045 tests: Add unit tests for bitcoin-tx replaceable command (Kashif Smith)
c2b836b119eeed8727d73bcca5e95055eb93fb1a bitcoin-tx: Make replaceable value optional (Kashif Smith)
Pull request description:
This fixes#28638. The issue was originally raised by dooglus, who also suggested the patch found in this code. Additionally, test coverage has been added and documentation has been updated.
ACKs for top commit:
achow101:
ACK 98afe7866185ed4157ffc581763e11dc02fcbae0
pinheadmz:
ACK 98afe7866185ed4157ffc581763e11dc02fcbae0
hernanmarino:
Tested ACK 98afe7866185ed4157ffc581763e11dc02fcbae0
instagibbs:
untested ACK 98afe78661
Tree-SHA512: ea1384aba7b0014c8cbeb7280d66b1e617d406fb02471dff33873057132b80518c94c7caa4b0426c26d17ce8aa393107de319dde781ace8df72f0314c8c75159
43c3246af774bda284111056268a814477f9b256 ci: Set `HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK` to avoid failures (Hennadii Stepanov)
Pull request description:
Homebrew attempts to check for outdated dependents or those with broken linkage. Such behavior might lead to failures when Homebrew updates them on old macOS images. For example, https://github.com/bitcoin/bitcoin/actions/runs/7199058794/job/19609891263 using the macOS image version `20231025.2`.
This PR prevents such behavior.
ACKs for top commit:
maflcko:
lgtm ACK 43c3246af774bda284111056268a814477f9b256
ismaelsadeeq:
re ACK 43c3246af7
Tree-SHA512: cbe3cef5adf3f00eb618ba17aad3dc76c0c5d11142122a26b93619ae47dc50771e9e095caa898213325ed6ff41c07119429c0a9094bb98ead5601855d07bb2ea
Homebrew attempts to check for outdated dependents or those with broken
linkage. Such behavior might lead to failures when Homebrew updates them
on old macOS images.
This change prevents such behavior.
37c75c58202f89b752500f76c872d7f8caf6bdb3 test: wallet, fix change position out of range error (furszy)
Pull request description:
Fixes#29061. Only the benchmark is affected.
Since #25273, the behavior of 'inserting change at a random position'
is instructed by passing ´std::nullopt´ instead of -1.
Also, added missing documentation about the meaning of
'change_pos=std::nullopt' inside 'CWallet::CreateTransaction()'
ACKs for top commit:
achow101:
ACK 37c75c58202f89b752500f76c872d7f8caf6bdb3
kevkevinpal:
ACK [37c75c5](37c75c5820)
BrandonOdiwuor:
ACK 37c75c58202f89b752500f76c872d7f8caf6bdb3
Tree-SHA512: d9a8d8533540455716a5090fcf407573cad9f0d0018a05f903f89e51620302f9b256318db6f7338b85c047f7fab372d724e916b1721d7ed302dbf3d845b08734
49a90915aa3ee8e3a7e163f23a55de931faf8523 build: Bump minimum required Boost to 1.73.0 to support C++20 (Hennadii Stepanov)
Pull request description:
Boost versions <1.73 have C++20-specific bugs that were fixed in the following commits:
- 15fcf21356
- 495c095dc0
I tested [`libboost1.71-dev`](https://packages.ubuntu.com/focal/libboost1.71-dev) in Ubuntu 20.04 and Boost 1.71, 1.72, 1.73 in our depends build system.
Closes https://github.com/bitcoin/bitcoin/issues/29063.
ACKs for top commit:
fanquake:
ACK 49a90915aa3ee8e3a7e163f23a55de931faf8523
Tree-SHA512: b8ebc08af85abfa3fda70961bd1136ee9e5149dd76a3f901e43acba624d231971873cba5cbf30837f9e5ab58790b8330f241a76cb76d8cf5dce5ad0cca33fba8
308aec3e5655327d98e0428d8205d246f24d6af5 build: disable external-signer for Windows (fanquake)
35537318a19360ddf1ea8f0c1e6d8ad49e635516 ci: remove --enable-external-signer from win64 job (fanquake)
Pull request description:
It's come to light that Boost ASIO (a Boost Process sub dep) has in some
instances, been quietly initialising our network stack on Windows (see
PR https://github.com/bitcoin/bitcoin/pull/28486 and discussion in https://github.com/bitcoin/bitcoin/issues/28940).
This has been shielding a bug in our own code, but the larger issue
is that Boost Process/ASIO is running code before main, and doing things
like setting up networking. This undermines our own assumptions about
how our binary works, happens before we run any sanity checks,
and before we call our own code to setup networking. Note that ASIO also
calls WSAStartup with version `2.0`, whereas we call with `2.2`.
It's also not clear why a feature like external signer would have a
dependency that would be doing anything network/socket related,
given it only exists to spawn a local process.
See also the discussion in https://github.com/bitcoin/bitcoin/issues/24907. Note that the maintaince of Boost Process in general,
has not really improved. For example, rather than fixing bugs like https://github.com/boostorg/process/issues/111,
i.e, https://github.com/boostorg/process/pull/317, the maintainer chooses to just wrap exception causing overflows
in try-catch blocks: 0c42a58eac. These changes get merged in large,
unreviewed PRs, i.e https://github.com/boostorg/process/pull/319.
This PR disables external-signer on Windows for now. If, in future, someone
changes how Boost Process works, or replaces it entirely with some
properly reviewed and maintained code, we could reenable this feature on
Windows.
ACKs for top commit:
hebasto:
re-ACK 308aec3e5655327d98e0428d8205d246f24d6af5.
TheCharlatan:
ACK 308aec3e5655327d98e0428d8205d246f24d6af5
Tree-SHA512: 7405f7fc9833eeaacd6836c4e5b1c1a7845a40c1fdd55c1060152f8d8189e4777464fde650e11eb1539556a75dddf49667105987078b1457493ee772945da66e
fa0534d7e47d44428d3f9dea6d2f6b8e86df22d4 test: Actually fail when a python unit test fails (MarcoFalke)
Pull request description:
Currently python unit test failures are ignored.
Fix this.
ACKs for top commit:
theStack:
ACK fa0534d7e47d44428d3f9dea6d2f6b8e86df22d4
BrandonOdiwuor:
ACK fa0534d7e47d44428d3f9dea6d2f6b8e86df22d4
Tree-SHA512: c136be4c8d861d966f380e04d5d14b711b90c4011101302dae1332496e493207c5c673927586ed35b02b61a0b050bf45053a31e6ff766ec52f1d054caf0985e2
bde8d63b17637c507a543cebe90f2998b5847373 depends: build libmultiprocess with position independant code (fanquake)
506634d79d6427925cd458f67799fe59e0ab14dd depends: always install libmultiprocess to /lib (fanquake)
beb309626381bf189cd2ae8bde83078b9de47c6a depends: always install capnp to /lib (fanquake)
Pull request description:
Change to always install libmultiprocess into `lib/`. On some systems (my Fedora aarch64 box), libmultiprocess was being installed into `lib64/`, and then configure would fail to pick it up, because we only add `lib/` to pkgconfig/ldflags out of depends. Rather than adding lib64 to those, I opted for installing libmultiprocess into lib, with every other dependency we build.
This was broken in our build after https://github.com/chaincodelabs/libmultiprocess/pull/79 upstream.
ACKs for top commit:
ryanofsky:
Code review ACK bde8d63b17637c507a543cebe90f2998b5847373. Only changes since last review were reverting the native_capnp change as suggested, and changing the order of the first two commits.
Tree-SHA512: ddd547e4ac224f2f199c569efd91104db7f2c243b124f9535aa0d9377315775ac566d699101580ce45ddd6676ad3e0c8cbe256334eeed9548205c2fa04d02102
fa3da629a1aebcb4500803d7417feed8e34285b0 Remove DirIsWritable, GetUniquePath (MarcoFalke)
fad3a9793b71df5bb0b17cc3758cf3466d08c015 Return LockResult::ErrorWrite in LockDirectory (MarcoFalke)
fa0afe740843c308f6287b923f1f4d758cf2a3f6 refactor: Return enum in LockDirectory (MarcoFalke)
Pull request description:
`GetUniquePath` is only used in tests and in `DirIsWritable`. The check by `DirIsWritable` is redundant with the check done in `LockDirectory`.
Fix the redundancy by removing everything, except `LockDirectory`.
ACKs for top commit:
TheCharlatan:
Re-ACK fa3da629a1aebcb4500803d7417feed8e34285b0
hebasto:
ACK fa3da629a1aebcb4500803d7417feed8e34285b0, I have reviewed the code and it looks OK.
Tree-SHA512: e95f18cd586de7582e9c08ac7ddb860bfcfcbc8963804f45c5784c5e4c0598dc59ae7e45dd4daf30a5020dbf8433f5db2ad06e46a8676371982003790043c6c9
Since #25273, the behavior of 'inserting change at a random
position' is instructed by passing std::nullopt instead of -1.
Also, added missing documentation about the meaning of
'change_pos=std::nullopt' inside 'CWallet::CreateTransaction()'
