faa7144d3c fuzz: re-enable prioritisetransaction & analyzepsbt RPC (MarcoFalke)
Pull request description:
The linked issue seems fixed, so it should be fine to re-enable
ACKs for top commit:
dergoegge:
utACK faa7144d3c
Tree-SHA512: a681c726fceacc27ab5a03d455c7808d33f3cb11fe7d253d455526568af840b29f0c3c1d97c54785ef9277e7891a3aa742ac73ccd3cf115b7606eba50864aaa9
be55f545d5 move-only: Extract common/args and common/config.cpp from util/system (TheCharlatan)
Pull request description:
This pull request is part of the `libbitcoinkernel` project https://github.com/bitcoin/bitcoin/issues/24303https://github.com/bitcoin/bitcoin/projects/18 and more specifically its "Step 2: Decouple most non-consensus code from libbitcoinkernel". It is part of a series of patches splitting up the `util/system` files. Its preceding pull request is https://github.com/bitcoin/bitcoin/pull/27254.
The pull request contains an extraction of ArgsManager related functions from util/system into their own common/ file.
The background of this commit is an ongoing effort to decouple the libbitcoinkernel library from the ArgsManager. The ArgsManager belongs into the common library, since the kernel library should not depend on it. See [doc/design/libraries.md](https://github.com/bitcoin/bitcoin/blob/master/doc/design/libraries.md) for more information on this rationale.
ACKs for top commit:
MarcoFalke:
re-ACK be55f545d5🚲
ryanofsky:
Code review ACK be55f545d5. Just small cleanups since the last review.
hebasto:
ACK be55f545d5, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: 90eb03334af0155b823030b4f2ecf286d35058d700ee2ddbbaa445be19e31eb0fe982656f35bd14ecee3ad2c3d0db3746855cb8f3777eff7253713e42873e111
* The GCC suppression was fixed in gcc-11, which is available on all LTS
releases of Linux distros.
* The feerate suppression was likely fixed and does not trigger anymore.
If it was to trigger again, the underlying bug should be fixed instead
of suppressing it.
* The bench suppression does not trigger anymore.
Also, add comments to tsan suppressions on how to reproduce.
0076bed45e logging: log ASN when using `-asmap` (brunoerg)
9836c76ae0 net: add `GetMappedAS` in `CConnman` (brunoerg)
Pull request description:
When using `-asmap`, you can check the ASN assigned to the peers only with the RPC command `getpeerinfo` (check `mapped_as` field), however, it's not possible to check it in logs (e.g. see in logs the ASN of the peers when a new outbound peer has been connected). This PR includes the peers' ASN in debug output when using `-asmap`.
Obs: Open this primarily to chase some Concept ACK, I've been using this on my node to facilitate to track the peers' ASN especially when reading the logs.
ACKs for top commit:
Sjors:
tACK 0076bed45e
jamesob:
ACK 0076bed45e ([`jamesob/ackr/27412.1.brunoerg.logging_net_add_asn_from`](https://github.com/jamesob/bitcoin/tree/ackr/27412.1.brunoerg.logging_net_add_asn_from))
achow101:
ACK 0076bed45e
Tree-SHA512: c19cd11e8ab49962021f390459aadf6d33d221ae9a2c3df331a25d6865a8df470e2c8828f6e5219b8a887d6ab5b3450d34be9e26c00cca4d223b4ca64d51111b
25ab14712b refactor: coinselector_tests, unify wallet creation code (furszy)
ba9431c505 test: coverage for bnb max weight (furszy)
5a2bc45ee0 wallet: clean post coin selection max weight filter (furszy)
2d112584e3 coin selection: BnB, don't return selection if exceeds max allowed tx weight (furszy)
d3a1c098e4 test: coin selection, add coverage for SRD (furszy)
9d9689e5a6 coin selection: heap-ify SRD, don't return selection if exceeds max tx weight (furszy)
6107ec2229 coin selection: knapsack, select closest UTXO above target if result exceeds max tx size (furszy)
1284223691 wallet: refactor coin selection algos to return util::Result (furszy)
Pull request description:
Coming from the following comment https://github.com/bitcoin/bitcoin/pull/25729#discussion_r1029324367.
The reason why we are adding hundreds of UTXO from different sources when the target
amount is covered only by one of them is because only SRD returns a usable result.
Context:
In the test, we create 1515 UTXOs with 0.033 BTC each, and 1 UTXO with 50 BTC. Then
perform Coin Selection to fund 49.5 BTC.
As the selection of the 1515 small UTXOs exceeds the max allowed tx size, the
expectation here is to receive a selection result that only contain the big UTXO.
Which is not happening for the following reason:
Knapsack returns a result that exceeds the max allowed transaction size, when
it should return the closest utxo above the target, so we fallback to SRD who
selects coins randomly up until the target is met. So we end up with a selection
result with lot more coins than what is needed.
ACKs for top commit:
S3RK:
ACK 25ab14712b
achow101:
ACK 25ab14712b
Xekyo:
reACK 25ab14712b
theStack:
Code-review ACK 25ab14712b
Tree-SHA512: 2425de4cc479b4db999b3b2e02eb522a2130a06379cca0418672a51c4076971a1d427191173820db76a0f85a8edfff100114e1c38fb3b5dc51598d07cabe1a60
9f947fc3d4 Use PoolAllocator for CCoinsMap (Martin Leitner-Ankerl)
5e4ac5abf5 Call ReallocateCache() on each Flush() (Martin Leitner-Ankerl)
1afca6b663 Add PoolResource fuzzer (Martin Leitner-Ankerl)
e19943f049 Calculate memory usage correctly for unordered_maps that use PoolAllocator (Martin Leitner-Ankerl)
b8401c3281 Add pool based memory resource & allocator (Martin Leitner-Ankerl)
Pull request description:
A memory resource similar to `std::pmr::unsynchronized_pool_resource`, but optimized for node-based containers. The goal is to be able to cache more coins with the same memory usage, and allocate/deallocate faster.
This is a reimplementation of #22702. The goal was to implement it in a way that is simpler to review & test
* There is now a generic `PoolResource` for allocating/deallocating memory. This has practically the same API as `std::pmr::memory_resource`. (Unfortunately I cannot use std::pmr because libc++ simply doesn't implement that API).
* Thanks to sipa there is now a fuzzer for PoolResource! On a fast machine I ran it for ~770 million executions without finding any issue.
* The estimation of the correct node size is now gone, PoolResource now has multiple pools and just needs to be created large enough to have space for the unordered_map nodes.
I ran benchmarks with #22702, mergebase, and this PR. Frequency locked Intel i7-8700, clang++ 13.0.1 to reindex up to block 690000.
```sh
bitcoind -dbcache=5000 -assumevalid=00000000000000000002a23d6df20eecec15b21d32c75833cce28f113de888b7 -reindex-chainstate -printtoconsole=0 -stopatheight=690000
```
The performance is practically identical with #22702, just 0.4% slower. It's ~21% faster than master:
Note that on cache drops mergebase's memory doesnt go so far down because it does not free the `CCoinsMap` bucket array.
ACKs for top commit:
LarryRuane:
ACK 9f947fc3d4
achow101:
re-ACK 9f947fc3d4
john-moffett:
ACK 9f947fc3d4
jonatack:
re-ACK 9f947fc3d4
Tree-SHA512: 48caf57d1775875a612b54388ef64c53952cd48741cacfe20d89049f2fb35301b5c28e69264b7d659a3ca33d4c714d47bafad6fd547c4075f08b45acc87c0f45
17e705428d doc: clarify new_only param for Select function (Amiti Uttarwar)
b0010c83a1 bench: test select for a new table with only one address (Amiti Uttarwar)
9b91aae085 bench: add coverage for addrman select with network parameter (Amiti Uttarwar)
22a4d1489c test: increase coverage of addrman select (without network) (Amiti Uttarwar)
a98e542e0c test: add addrman test for special case (Amiti Uttarwar)
5c8b4baff2 tests: add addrman_select_by_network test (Amiti Uttarwar)
6b229284fd addrman: add functionality to select by network (Amiti Uttarwar)
26c3bf11e2 scripted-diff: rename local variables to match modern conventions (Amiti Uttarwar)
48806412e2 refactor: consolidate select logic for new and tried tables (Amiti Uttarwar)
ca2a9c5f8f refactor: generalize select logic (Amiti Uttarwar)
052fbcd5a7 addrman: Introduce helper to generalize looking up an addrman entry (Amiti Uttarwar)
9bf078f66c refactor: update Select_ function (Amiti Uttarwar)
Pull request description:
For the full context & motivation of this patch, see #27213
This is joint work with mzumsande.
This PR adds functionality to `AddrMan::Select` to enable callers to specify a network they are interested in.
Along the way, it refactors the function to deduplicate the logic, updates the local variables to match modern conventions, adds test coverage for both the new and existing `Select` logic, and adds bench tests for the worst case performance of both the new and existing `Select` logic.
This functionality is used in the parent PR.
ACKs for top commit:
vasild:
ACK 17e705428d
brunoerg:
re-ACK 17e705428d
ajtowns:
ACK 17e705428d
mzumsande:
Code Review ACK 17e705428d
Tree-SHA512: e99d1ce0c44a15601a3daa37deeadfc9d26208a92969ecffbea358d57ca951102d759734ccf77eacd38db368da0bf5b6fede3cd900d8a77b3061f4adc54e52d8
9c24826e7b doc: Remove 25.0 release note fragments (Andrew Chow)
088a93dce8 build: Bump to 25.99 (Andrew Chow)
Pull request description:
Pre-25.x branch off version bump and release note fragments removal.
The 25.0 draft release notes are in the dev wiki: https://github.com/bitcoin-core/bitcoin-devwiki/wiki/25.0-Release-Notes-Draft
ACKs for top commit:
fanquake:
ACK 9c24826e7b
Tree-SHA512: f7c7b04aa904e946bc672b5b07082a819b9d76ebccda0838bc27d0e6179cfb88b8f110500d5ea815f711580916bcfa0275774ec50a7298a4c66e645647111125
31b1798d2c p2p: update hardcoded mainnet seeds for 25.x (Jon Atack)
04dd1d3926 contrib: make-seeds updates for 25.x (Jon Atack)
f5c8788628 p2p: update manual tor/i2p/cjdns mainnet seeds for 25.x (Jon Atack)
Pull request description:
Update the hardcoded P2P network seeds for 25.x after updating the manual seeds and the generation script as necessary. Previous update was #25911.
The manual seeds are selected for reachability, uptime and service bit 1 and/or curated trusted peers. We need more Tor and CJDNS seeds and some of the current Tor and I2P seeds are no longer reachable.
Can be tested by following the steps in `contrib/seeds/README.md` and verifying the manual seeds by checking their presence and services in getnodeaddresses and/or connecting to them and checking their services with getpeerinfo and behavior with -netinfo.
Tool output:
```
$ python3 makeseeds.py -a asmap-filled.dat -s seeds_main.txt > nodes_main.txt
Loading asmap database "asmap-filled.dat"…Done.
Loading and parsing DNS seeds…Done.
IPv4 IPv6 Onion Pass
3972 1118 0 Initial
3972 1118 0 Skip entries with invalid address
3972 1118 0 After removing duplicates
3946 1112 0 Enforce minimal number of blocks
3946 1112 0 Require service bit 1
2791 798 0 Require minimum uptime
2757 788 0 Require a known and recent user agent
2757 788 0 Filter out hosts with multiple bitcoin ports
512 289 0 Look up ASNs and limit results per ASN and per net```
ACKs for top commit:
achow101:
ACK 31b1798d2c
mzumsande:
reACK 31b1798d2c
Tree-SHA512: 40cdd0ac74e3d26975ab688ee4af09bedcf15f6e02311757b27c91aafdc4da16cca2be90fee767207bb4ccd542ad19197e4d5e00011185018239de35da19c174
a2bef805c1 kernel: update m_assumed_* chain params for 25.x (fanquake)
4128e01dba kernel: update chainTxData for 25.x (fanquake)
00b2b114b4 kernel: update nMinimumChainWork & defaultAssumeValid for 25.x (fanquake)
07fcc0a82c doc: update references to kernel/chainparams.cpp (fanquake)
Pull request description:
Update chainparams pre `25.x` branch off.
Co-Author in the commits as a PR (#27223) had previously been opened too-early to do the same.
Note: Remember that some variance is expected in the `m_assumed_*` sizes.
ACKs for top commit:
achow101:
ACK a2bef805c1
josibake:
ACK a2bef805c1
gruve-p:
ACK a2bef805c1
dergoegge:
ACK a2bef805c1 on the new mainnet params
Tree-SHA512: 0b19c2ef15c6b15863d6a560a1053ee223057c7bfb617ffd3400b1734cee8f75bc6fd7f04d8f8e3f5af6220659a1987951a1b36945d6fe17d06972004fd62610
3cc989da5c Fix checking bad dns seeds without casting (Yusuf Sahin HAMZA)
Pull request description:
- Since seed lines comes with `str` type, comparing `good` column directly with **0** (`int` type) in the if statement was not working at all. This is fixed by casting `int` type to the values in the `good` column of seeds text file.
- Lines that starts with comment in the seeds text file are now ignored.
- If statement for checking bad seeds are moved to the top of the `parseline` function as if a seed is bad; there is no point of going forward from there.
Since this bug-fix eliminates bad seeds over **550k** in the first place, in my case; particular job for parsing all seeds speed is up by **600%** and whole script's speed is up by **%30**.
Note that **stats** in the terminal are not going to include bad seeds after this fix, which would be the same if this bug were never there before.
ACKs for top commit:
achow101:
ACK 3cc989da5c
jonatack:
ACK 3cc989da5c
Tree-SHA512: 13c82681de4d72de07293f0b7f09721ad8514a2ad99b0584d1c94fa5f2818821df2000944f9514d6a222a5dccc82856d16c8c05aa36d905cfa7d4610c629fd38
This will allow us to use the existing machinery for filtering by
arch, os, debug/release, etc.
For example, the following becomes possible for libevent:
$(package)_config_opts_release=-DEVENT__DISABLE_DEBUG_MODE
Now the define is only set when not building depends with DEBUG=1
4de9c2a65f ci: build libc++ with assertions in MSAN jobs (fanquake)
23b8b2026a ci: build libc++ in DEBUG mode in MSAN jobs (fanquake)
Pull request description:
Followup to #27447.
See https://releases.llvm.org/16.0.0/projects/libcxx/docs/DesignDocs/DebugMode.html:
> Libc++ provides a debug mode that enables special debugging checks meant to detect incorrect usage of the standard library. These checks are disabled by default, but they can be enabled by vendors when building the library by using LIBCXX_ENABLE_DEBUG_MODE.
ACKs for top commit:
MarcoFalke:
lgtm ACK 4de9c2a65f
Tree-SHA512: 788c7f031ccf7a6ac96a87758e57f604cf4d9db0144f0ecc4931823111d2396e64ab260825d74f06b2770d0ac3e4e2c21c46f4def046cf3e1a44d705921ab6d2
If the added block exceeds the blockfile size in test-only
-fastprune mode, the node would get stuck in an infinite loop and
run out of memory.
Avoid this by raising the blockfile size to the size of the added block
in this situation.
Co-authored-by: TheCharlatan <seb.kung@gmail.com>
bc4fd49d09 depends: add _LIBCPP_ENABLE_ASSERTIONS to DEBUG mode (fanquake)
cf266b2270 depends: Remove _LIBCPP_DEBUG from depends DEBUG mode (fanquake)
Pull request description:
It was deprecated in LLVM 15, turned into compile-time error in LLVM 16:
```bash
In file included from /usr/lib/llvm-16/bin/../include/c++/v1/cassert:19:
/usr/lib/llvm-16/bin/../include/c++/v1/__assert:22:5: error: "Defining _LIBCPP_DEBUG is not supported anymore.
Please use _LIBCPP_ENABLE_DEBUG_MODE instead."
^
1 error generated.
```
and has been removed entirely in LLVM 17 (main): ff573a42cd.
[Building libc++ in debug mode](https://releases.llvm.org/16.0.0/projects/libcxx/docs/DesignDocs/DebugMode.html), will also automatically set
`_LIBCPP_ENABLE_DEBUG_MODE` (the new define), so adding it to depends
doesn't seem useful, and would just result in redefinition errors.
I'm wondering if as a followup, we could enable a DEBUG build of libc++
in our MSAN CI job? i.e https://github.com/fanquake/bitcoin/tree/msan_with_enable_debug_mode.
Somewhat related to https://github.com/google/oss-fuzz/pull/9828, where
it looks like we'll have to sort out getting a DEBUG build of LLVM, and can drop the commentary about re-enabling DEBUG=1.
ACKs for top commit:
MarcoFalke:
lgtm Approach ACK bc4fd49d09
Tree-SHA512: 9c0f48fc428278fbf34fbb8f81e761e232506d7ab28e971cb9a9b9a81d549b4d8bbe51e2f7608d56e489428679231da5b7431443849b238a8a993ad241740282
This is an extraction of ArgsManager related functions from util/system
into their own common file.
Config file related functions are moved to common/config.cpp.
The background of this commit is an ongoing effort to decouple the
libbitcoinkernel library from the ArgsManager. The ArgsManager belongs
into the common library, since the kernel library should not depend on
it. See doc/design/libraries.md for more information on this rationale.
fde224a661 doc: remove outdated version number usage from release-process (fanquake)
Pull request description:
We no-longer use the leading `0.` version number, and having a mixture is both in the release-process examples is needlessly confusing.
ACKs for top commit:
achow101:
ACK fde224a661
stickies-v:
ACK fde224a661
Tree-SHA512: c6693b01741921f6870244243640fe857e024bb8581ce57b2d870abf20d257309b97af61fe464427e31a60cda78cf23c1012c6b6a2246250f3670c4b813417d9
It was deprecated in LLVM 15, turned into a compile-time error in LLVM 16:
```bash
In file included from /usr/lib/llvm-16/bin/../include/c++/v1/cassert:19:
/usr/lib/llvm-16/bin/../include/c++/v1/__assert:22:5: error: "Defining _LIBCPP_DEBUG is not supported anymore.
Please use _LIBCPP_ENABLE_DEBUG_MODE instead."
^
1 error generated.
```
and has been removed entirely in LLVM 17 (main),
ff573a42cd.
Building libc++ in debug mode, will also automatically set
`_LIBCPP_ENABLE_DEBUG_MODE` (the new define), so adding it to depends
doesn't seem useful, and would just result in redefinition errors.
I'm wondering if as a followup, we could enable a DEBUG build of libc++
in our MSAN CI job?
Somewhat related to https://github.com/google/oss-fuzz/pull/9828, where
it looks like we'll have to sort out getting a DEBUG build of LLVM.
fa4a46de0b ci: Bump nowallet_libbitcoinkernel task to ubuntu:focal (MarcoFalke)
fabc7d90a9 ci: Use credits in more tasks (MarcoFalke)
facae3b149 ci: Use Cirrus CI dockerfile env (MarcoFalke)
Pull request description:
Currently the CI env has many intermittent issues:
* The Ubuntu package servers are frequently down
* Occasionally other stuff is down, such as dnf, pip, or the android sdk
* Installing packages is slower than downloading them, at least on Cirrus, which has a fast download speed
Fix all issues by using the Cirrus CI dockerfile env.
ACKs for top commit:
josibake:
code review ACK fa4a46de0b
Tree-SHA512: fea5663f7b6dc1c4ea9f87188026ec542b9269bac8ee3398cd58d4df6c86a0af9d275f1876e03f92fb1f6166ec49b817d9e588e6fe1ed54b77592502c2eccd9d
6a77d290da test: add regression tests for #27468 (invalid URI segfaults) (Sebastian Falbesoner)
Pull request description:
Prior to PR #27468 (commit 11422cc572) all call-sites of `GetQueryParameter(...)` in the REST module could trigger a crash. Add missing test cases for all possible code-paths as a regression test, as a foundation for possible follow-up fixes (which aim to resolve this issue in a more general and robust way).
ACKs for top commit:
stickies-v:
ACK 6a77d290da
vasild:
ACK 6a77d290da
Tree-SHA512: b5dd22d7d448f92236575ea950287259795a957a3f8e364682510c7c1ede5f9d67e7daccc5146c8d0817bcb71742d49273801574bd2bb96e44a9ae5a006ac2a7
Prior to PR #27468 (commit 11422cc572) all
call-sites of `GetQueryParameter(...)` in the REST module could trigger
a crash. Add missing test cases for all possible code-paths as a
regression test, as a foundation for possible follow-up fixes (which aim
to resolve this issue in a more general and robust way).
e07dd5fff9 test: fix bumpfee 'spend_one_input' occasional failure (furszy)
Pull request description:
CI test failure, in master: https://cirrus-ci.com/task/5975232842825728.
In #27469https://cirrus-ci.com/task/6452468402356224
Most of the subtests in `wallet_bumpfee.py` expect to find spendable UTXOs of 0.001 btc in the rbf wallet. They use the `spend_one_input()` method which fails if none of them exist.
The sporadic failure comes from the recently added `test_feerate_checks_replaced_outputs` subtest that can spend all them. Leaving the next subtests with no 0.001 UTXOs to spend.
To solve it, this PR moves the recently added case into a "context independent subtests" section.
Which is placed at the end to not affect other cases.
ACKs for top commit:
achow101:
ACK e07dd5fff9
pablomartin4btc:
ACK e07dd5fff9.
Tree-SHA512: c150ed6fcfbb6f1502eaf6370a57aae0da991c0fc48e8bb3d446805f4336abba5d80ff0de26094914da95432dd0255030fe527001af4510dfdcefbc7230f14d6
f8b8458276 depends: fix compiling bdb with clang-16 on aarch64 (fanquake)
Pull request description:
Compiling bdb with clang-16 on aarch64 (hardware) currently fails:
```bash
make -C depends/ bdb CC=clang CXX=clang++
...
checking for mutexes... UNIX/fcntl
configure: WARNING: NO SHARED LATCH IMPLEMENTATION FOUND FOR THIS PLATFORM.
configure: error: Unable to find a mutex implementation
```
Looking at config.log we've got:
```bash
configure:18704: checking for mutexes
configure:18815: clang -o conftest -pipe -std=c11 -O2 -Wno-error=implicit-function-declaration -Wno-error=format-security -I/bitcoin/depends/aarch64-unknown-linux-gnu/include -D_GNU_SOURCE -D_REENTRANT -L/bitcoin/depends/aarch64-unknown-linux-gnu/lib conftest.c -lpthread >&5
conftest.c:45:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
main() {
^
int
conftest.c:50:2: warning: call to undeclared library function 'exit' with type 'void (int) __attribute__((noreturn))'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
exit (
^
conftest.c:50:2: note: include the header <stdlib.h> or explicitly provide a declaration for 'exit'
1 warning and 1 error generated.
```
Clang-16 changed `-Wimplicit-function-declaration` and `-Wimplicit-int`
warnings into errors, see:
https://releases.llvm.org/16.0.0/tools/clang/docs/ReleaseNotes.html#potentially-breaking-changes.
> The -Wimplicit-function-declaration and -Wimplicit-int warnings now
> default to an error in C99, C11, and C17. As of C2x, support for implicit
> function declarations and implicit int has been removed, and the
> warning options will have no effect. Specifying -Wimplicit-int in
> C89 mode will now issue warnings instead of being a noop.
ACKs for top commit:
hebasto:
ACK f8b8458276, tested on Ubuntu Lunar (`aarch64`) with:
Tree-SHA512: 5ca078b1c00915446e9f0f2ecaa4342295a2097996554345753315d1c81c23000c57be14e1ac5506a87820f5114aba748456f2c2b6426b0810504d62d761a787
0d6383fda0 Don't return OutputType::UNKNOWN in ParseOutputType (Pttn)
Pull request description:
Fixes https://github.com/bitcoin/bitcoin/issues/27472 by also handling at the relevant places the case where ParseOutputType returns `OutputType::UNKNOWN`, and not just when it returns `std::nullopt`.
ACKs for top commit:
achow101:
ACK 0d6383fda0
MarcoFalke:
lgtm ACK 0d6383fda0
furszy:
ACK 0d6383fda0
Tree-SHA512: 776793027b926283d3162e69fb9c8883c814b19bcce4574ccdf8e3140a1ec4ebc4aa8ccd1abae7ef3571f942d2e6c35305fd1244259540d90605106e01afc34c
`evhttp_uri_parse` can return a nullptr, for example when the URI
contains invalid characters (e.g. "%").
`GetQueryParameterFromUri` passes the output of `evhttp_uri_parse`
straight into `evhttp_uri_get_query`, which means that anyone calling
a REST endpoint in which query parameters are used (e.g. `rest_headers`)
can cause a segfault.
This bugfix is designed to be minimal and without additional behaviour change.
Follow-up work should be done to resolve this in a more general and robust way,
so not every endpoint has to handle it individually.
Compiling bdb with clang-16 on aarch64 (hardware) currently fails:
```bash
make -C depends/ bdb CC=clang CXX=clang++
...
checking for mutexes... UNIX/fcntl
configure: WARNING: NO SHARED LATCH IMPLEMENTATION FOUND FOR THIS PLATFORM.
configure: error: Unable to find a mutex implementation
```
Looking at config.log we've got:
```bash
configure:18704: checking for mutexes
configure:18815: clang -o conftest -pipe -std=c11 -O2 -Wno-error=implicit-function-declaration -Wno-error=format-security -I/bitcoin/depends/aarch64-unknown-linux-gnu/include -D_GNU_SOURCE -D_REENTRANT -L/bitcoin/depends/aarch64-unknown-linux-gnu/lib conftest.c -lpthread >&5
conftest.c:45:1: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
main() {
^
int
conftest.c:50:2: warning: call to undeclared library function 'exit' with type 'void (int) __attribute__((noreturn))'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
exit (
^
conftest.c:50:2: note: include the header <stdlib.h> or explicitly provide a declaration for 'exit'
1 warning and 1 error generated.
```
Clang-16 changed `-Wimplicit-function-declaration` and `-Wimplicit-int`
warnings into errors, see:
https://releases.llvm.org/16.0.0/tools/clang/docs/ReleaseNotes.html#potentially-breaking-changes.
> The -Wimplicit-function-declaration and -Wimplicit-int warnings now
> default to an error in C99, C11, and C17. As of C2x, support for implicit
> function declarations and implicit int has been removed, and the
> warning options will have no effect. Specifying -Wimplicit-int in
> C89 mode will now issue warnings instead of being a noop.
Avoid adding transactions below min relay feerate because, even if they
were bumped through CPFP when entering the mempool, we do not have a
DoS-resistant way of ensuring they always remain bumped. In the future,
this rule can be relaxed (e.g. to allow packages to bump 0-fee
transactions) if we find a way to do so.
