56ace907b9 Fix fuzz binary compilation under windows (Dan Benjamin)
Pull request description:
Small change to allow the fuzz binary to compile under windows. Also removed --disable-fuzz-binary from the windows CI test. This fixes#21212.
ACKs for top commit:
MarcoFalke:
review ACK 56ace907b9 the best bugfixes are the ones removing code
Tree-SHA512: 6088fd955a5e511b5ca1b3eaa8469a889eb6d994c2827acac7695dac6e4e320a344b45f4015a2f279b16df0d4b23ec4df13304ae6315395ad2fe8c5b526cada4
This package is currently installed as a side-effect of installing our
other libboost-*-dev packages. However as those continue to dissapear,
it makes sense to install boost dev explicitly.
3f8776a139 Re-add dead code detection (flack)
Pull request description:
This re-adds unreachable code detection for Python based on `vulture`.
Effectively, this reverts f4beb4996d. The difference to the previous version is that this runs with the `--min-confidence 100` setting. From https://pypi.org/project/vulture/:
> Use `--min-confidence 100` to only report code that is guaranteed to be unused within the analyzed files.
So this should avoid the previous issues where static analysis had wrong positives due to the dynamic nature of Python code by only reporting things that are unambiguous (such as code after a `return` statement). As such, there is not suppressions list.
My motivation was mainly #21081 which would have been caught by this (as can be seen by the CI run failing). This is still marked as draft because #21081 is needed to get the linter to pass. Also, there is a second problem that this found (see https://github.com/bitcoin/bitcoin/pull/19509/files#r571454691). From what I can tell, this is a spurious type comment that could just be removed (or if that line has no side effects it could also be deleted altogether?). I could add a commit here to fix it, but I wanted to see if there is interest in having this linter again in the first place
ACKs for top commit:
practicalswift:
ACK 3f8776a139
Tree-SHA512: 52314ad4f627d969de1eb15375ca677ed86a2e816fe773756a1ce22421214ba407b5a09a4bf701a3aab1a10c7b336f548e4cef3327edf154acba55e987db21f6
060a2a64d4 ci: remove boost thread installation (fanquake)
06e1d7d81d build: don't build or use Boost Thread (fanquake)
7097add83c refactor: replace Boost shared_mutex with std shared_mutex in sigcache (fanquake)
8e55981ef8 refactor: replace Boost shared_mutex with std shared_mutex in cuckoocache tests (fanquake)
Pull request description:
This replaces `boost::shared_mutex` and `boost::unique_lock` with [`std::shared_mutex`](https://en.cppreference.com/w/cpp/thread/shared_mutex) & [`std::unique_lock`](https://en.cppreference.com/w/cpp/thread/unique_lock).
Even though [some concerns were raised](https://github.com/bitcoin/bitcoin/issues/16684#issuecomment-726214696) in #16684 with regard to `std::shared_mutex` being unsafe to use across some glibc versions, I still think this change is an improvement. As I mentioned in #21022, I also think trying to restrict standard library feature usage based on bugs in glibc is not only hard to do, but it's not currently clear exactly how we do that in practice (does it also extend to patching out use in our dependencies, should we be implementing more runtime checks for features we are using, when do we consider an affected glibc "old enough" not to worry about? etc). If you take a look through the [glibc bug tracker](https://sourceware.org/bugzilla/describecomponents.cgi?product=glibc) you'll no doubt find plenty of (active) bug reports for standard library code we already using. Obviously not to say we shouldn't try and avoid buggy code where possible.
Two other points:
[Cory mentioned in #21022](https://github.com/bitcoin/bitcoin/pull/21022#issuecomment-769274179):
> It also seems reasonable to me to worry that boost hits the same underlying glibc bug, and we've just not happened to trigger the right conditions yet.
Moving away from Boost to the standard library also removes the potential for differences related to Boosts configuration. Boost has multiple versions of `shared_mutex`, and what you end up using, and what it's backed by depends on:
* The version of Boost.
* The platform you're building for.
* Which version of `BOOST_THREAD_VERSION` is defined: (2,3,4 or 5) default=2. (see [here](https://www.boost.org/doc/libs/1_70_0/doc/html/thread/build.html#thread.build.configuration) for some of the differences).
* Is `BOOST_THREAD_V2_SHARED_MUTEX` defined? (not by default). If so, you might get the ["less performant, but more robust"](https://github.com/boostorg/thread/issues/230#issuecomment-475937761) version of `shared_mutex`.
A lot of these factors are eliminated by our use of depends, but users will have varying configurations. It's also not inconceivable to think that a distro, or some package manager might start defining something like `BOOST_THREAD_VERSION=3`. Boost tried to change the default from 2 to 3 at one point.
With this change, we no longer use Boost Thread, so this PR also removes it from depends, the build system, CI etc.
Previous similar PRs were #19183 & #20922. The authors are included in the commits here.
Also related to #21022 - pthread sanity checking.
ACKs for top commit:
laanwj:
Code review ACK 060a2a64d4
vasild:
ACK 060a2a64d4
Tree-SHA512: 572d14d8c9de20bc434511f20d3f431836393ff915b2fe9de5a47a02dca76805ad5c3fc4cceecb4cd43f3ba939a0508178c4e60e62abdbaaa6b3e8db20b75b03
2ecaf21433 gitian: remove execstack workaround for ricv64 & powerpc64le (fanquake)
5baff2b318 build: use focal in gitian descriptors (fanquake)
Pull request description:
This PR changes the gitian descriptors to use Ubuntu Focal (20.04), over Bionic (18.04), moving from GCC 7.5 to GCC 8.4 for native Linux builds, mingw-w64 GCC 7.3 to mingw-w64 GCC 9.3 for Windows builds, while continuing to use GCC 8.4 for all cross builds and Clang 8.0.0 for macOS builds.
It also drops the `-Wl,-z,noexecstack` workaround we've been using for the riscv64 and powerpc64le hosts, as it's no-longer needed. One new package is installed in the osx build, `libtinfo5`, as libtinfo5.so is required by our downloaded Clang 8.
A bump to Focal will at least be required if we want to update to a newer Qt (5.15, #19716) for 22.0, as we need a newer version of [`g++-mingw-w64`](https://packages.ubuntu.com/focal/g++-mingw-w64-x86-64) and the [`mingw-w64`](https://mingw-w64.org/doku.php) headers. This can still be done while continuing to use GCC 8.4 for Linux builds (see below), however the newer `g++-mingw-w64` will be based off of GCC 9.3.
**Some considerations**
GCC 9 is affected by #20005 "memcmp with constants that contain zero bytes are broken in GCC", and the newer `g++-mingw-w64` will be based off of GCC 9.3.
The `--no-*` variants of the Windows linker flags (i.e `--no-dynamicbase`) we use to [test our `security-check.py` script](16b784d953/contrib/devtools/test-security-check.py (L53)) are not patched into the mingw binutils in Focal (they have been re-added in Groovy (20.10)). This isn't currently an issue, however, we might add a call to `test-security-check` for Guix (#20980), and if we wanted to do the same for gitian, it would not work. Note how it's quite "easy" for us to apply the `--no-*` variant patch to our Guix build; it would be quite a bit harder to do in Gitian.
Gitian Builds @ 2ecaf21433
#### Linux
```bash
8882ea78486fbae4fac574b9089eb1107c6372d0dd7dfcda4f0f930576f9d6c1 bitcoin-2ecaf214331b-aarch64-linux-gnu-debug.tar.gz
50a9e30943b4eee5163edff3331241e745ff32a2c4463c21a6fdc5986e2d0383 bitcoin-2ecaf214331b-aarch64-linux-gnu.tar.gz
ec4e55a447fddf033fee33cd5f22bfeda3c3612f059194bcf6238859f7989d7a bitcoin-2ecaf214331b-arm-linux-gnueabihf-debug.tar.gz
444fe1b3b933c00bcbd4a9d86888cff3b61c1215b1debccd2843e842d1224777 bitcoin-2ecaf214331b-arm-linux-gnueabihf.tar.gz
88e486ff465980dc1a4aab9687d142ec6f727ed2c52cf539f69db2877dee83b2 bitcoin-2ecaf214331b-powerpc64-linux-gnu-debug.tar.gz
66144ac264c65cada9d86446e6026c85b04fb88198b8f41b42840f6031db3e6c bitcoin-2ecaf214331b-powerpc64-linux-gnu.tar.gz
34bcc13d78d929d575e34e77a6672f23ca7ea23230b28ec2eed563889352ba86 bitcoin-2ecaf214331b-powerpc64le-linux-gnu-debug.tar.gz
b4c5f959664f3063df4330edfe343c17120eb6b556ee1c15c4aeb2c1c54ffd49 bitcoin-2ecaf214331b-powerpc64le-linux-gnu.tar.gz
918fa72ab6f6ebce4e9663c93f72fe26651c260477cbb54749f7eb61438b5cc1 bitcoin-2ecaf214331b-riscv64-linux-gnu-debug.tar.gz
f704f9f8c053ffe37d854e2e81e0f4c0614c435dad7f5d82518c681b73a76ae6 bitcoin-2ecaf214331b-riscv64-linux-gnu.tar.gz
b59e3a62f1df9d79f30e916b3c9655f654036fe3a420040c53acc8dd9f4162c5 bitcoin-2ecaf214331b-x86_64-linux-gnu-debug.tar.gz
a4dc9ca877cc97544e65db11be38406d16f15d74fcdcd2318bb92474729bc60d bitcoin-2ecaf214331b-x86_64-linux-gnu.tar.gz
b40ba2d5da498330ade92a4ccebcceb1452b94c8ffeacb336f87e93b5c88d8af src/bitcoin-2ecaf214331b.tar.gz
af6ebc91147778e4e6705eade62608dde4d6e60522d79087fa9129bdb7c01199 bitcoin-core-linux-22-res.yml
```
#### Windows
```bash
121a3970a6911cb8c453b2ce37d03f6cbb43333e29db8fa516c68563fb367f43 bitcoin-2ecaf214331b-win-unsigned.tar.gz
6294e9efebe935092f9ba119dc60ad4094f18b51c4181324e54d3057524d6101 bitcoin-2ecaf214331b-win64-debug.zip
5b5a236b63e67f5f6c07ad9aa716aa7b72fb63722c96798b332c6d164738f9cf bitcoin-2ecaf214331b-win64-setup-unsigned.exe
c1fa5894c5e02a201637567c80b9bde9024f44673dcd06fd4d489c1709179279 bitcoin-2ecaf214331b-win64.zip
b40ba2d5da498330ade92a4ccebcceb1452b94c8ffeacb336f87e93b5c88d8af src/bitcoin-2ecaf214331b.tar.gz
665fd7eb61aed368150db58a254f15fb5efb51a4efa5abcc52571cb7a1a5de22 bitcoin-core-win-22-res.yml
```
#### macOS
```bash
6a1deae7662aa782baa82a42590f862c6bcdc4f4e38daa9b8c2a9eed1fbb5397 bitcoin-2ecaf214331b-osx-unsigned.dmg
1ee843266e84928a4323fa255c833528c2617a2c9fd2f98fb26ba19bbfc1227b bitcoin-2ecaf214331b-osx-unsigned.tar.gz
097b64dadc167d8e5b733421bf1541a40760ad952990f7cf3f35adc6ae2616d0 bitcoin-2ecaf214331b-osx64.tar.gz
b40ba2d5da498330ade92a4ccebcceb1452b94c8ffeacb336f87e93b5c88d8af src/bitcoin-2ecaf214331b.tar.gz
6e378fb543928e40c7119b96be6ff773d38506a9a888f8b02c7f1b8a0801a80e bitcoin-core-osx-22-res.yml
```
ACKs for top commit:
laanwj:
Build script changes review ACK 2ecaf21433
Tree-SHA512: 975d5830b787d2e08988f43cbc6e839294171c1d94c8219636308b05f9b77041421612ae67be24a631674670cfc9c2d96d8177f2b3158a78fc3deea19631febf
This fixes issue #19388. The changes are as follows:
- Add a new flag to configure, --enable-fuzz-binary, which allows building test/fuzz/fuzz regardless of whether we are building to do actual fuzzing
- Set -DPROVIDE_MAIN_FUNCTION whenever --enable-fuzz is no
- Add the following libraries to FUZZ_SUITE_LD_COMMON:
- LIBBITCOIN_WALLET
- SQLLITE_LIBS
- BDB_LIBS
- if necessary, some or all of:
- NATPMP_LIBS
- MINIUPNPC_LIBS
- LIBBITCOIN_ZMQ / ZMQ_LIBS
Compilers used change as follows:
Linux native GCC 7.5 -> GCC 8.4
Linux cross GCC 8.4 -> GCC 8.4
Windows mingw-w64 7.3 -> mingw-w64 9.3
macOS Clang 8.0.0 -> Clang 8.0.0
The macOS and Win cross builds in the CI are updated to use Focal, and
per the op, running the security tests is disabled in the Windows
build.
faff3991a9 ci: Fuzz with integer sanitizer (MarcoFalke)
Pull request description:
Otherwise the suppressions file will go out of sync
ACKs for top commit:
practicalswift:
cr ACK faff3991a9: patch looks correct
Tree-SHA512: 349216d071a2c5ccf24565fe0c52d7a570ec148d515d085616a284f1ab9992ce10ff82eb17962dddbcda765bbd3a9b15e8b25f34bdbed99fc36922d4161d307c
4045a6722c ci: Use cpu=1 for linter (Dhruv Mehta)
739d39022d ci: Move linter task to cirrus (Dhruv Mehta)
Pull request description:
Solves #20467: Move linter to Cirrus-CI as Travis-CI.org is shutting down
ACKs for top commit:
MarcoFalke:
ACK 4045a6722c
Tree-SHA512: 9aa7487ac86c91fc68bb584d29134e304dbd46702514a5d47d1ef0de6b877d96d42b7589870fc67ad9a31f5d3a789728446da4418688f336111a9ba0f8de5feb
xorriso and its mkisofs/genisoimage emulation alter-ego xorrisofs are
more maintained, and has the right toggles for us to achieve output
determinism without using blunt tools like faketime.
In this commit, we use xorrisofs from the build environment rather than
building it ourselves using depends. This is not necessary and can be
changed in the future.
From https://wiki.debian.org/genisoimage?action=recall&rev=11 :
> The classical command line interface for production of ISO 9660
> filesystem images is the option set established by program mkisofs.
> For reasons of licensing and other problems with its author, Debian
> ships a fork of mkisofs, called genisoimage, which was split off in
> 2006 and then developed independently.
>
> Meanwhile, genisoimage gets no new features and not even bug fixes. It
> is first choice only if its options -udf or -hfs are needed.
>
> Replacement in most uses cases, especially for bootable ISO 9660
> filesystems, archiving, and backup, is xorrisofs which starts the -as
> mkisofs emulation mode of program xorriso.
This adds a brief help text to `git-subtree-check.sh` and adds and an
option to do a full remote check instead of having two different code
paths with a successful exit status. Also make it explicit that the CI
is not doing this.
c82d15b6d1 depends: Do not force Precompiled Headers (PCH) for building Qt on Linux (Hennadii Stepanov)
Pull request description:
On CentOS 8 (Cirrus CI job) the forced `-pch` option breaks Qt build.
Removing `-pch` option does not affect build time for other systems:
- master (e2ff5e7b35):
```
$ time make -j 9 -C depends/ qt
...
Caching qt...
make: Leaving directory '/home/hebasto/guix/GitHub/bitcoin/depends'
real 4m22,359s
user 18m3,719s
sys 1m24,769s
```
- this PR:
```
$ time make -j 9 -C depends/ qt
...
Caching qt...
make: Leaving directory '/home/hebasto/guix/GitHub/bitcoin/depends'
real 4m14,862s
user 18m3,355s
sys 1m24,506s
```
Qt docs: https://doc.qt.io/qt-5/qmake-precompiledheaders.htmlFixes#20423
ACKs for top commit:
MarcoFalke:
review ACK c82d15b6d1
Tree-SHA512: 0f2a3712e90de881d00f8e56c363edde33dd4f5c117df5744ab4e51d0a8146331de7236bc8329d68ddd91535cd853e68ee80ef4cceb6a909786abfd8881b01e8
a52ecc936a build: set minimum supported macOS to 10.14 (fanquake)
Pull request description:
This is a requirement for C++17 support. See my comments [here](https://github.com/bitcoin/bitcoin/issues/16684#issuecomment-643722538):
> You cannot use std::get with std::variant on macOS < 10.14, because Apples libc++ doesn't support the std::bad_variant_access exception. [Relevant comment](https://github.com/bitcoin/bitcoin/pull/19183#discussion_r439794318) in #19183.
> While we could work around this in our own code, using std::get_if, this would still be a problem for 3rd-party dependencies.
> I've been testing Qt 5.15LTS (we'll have to enable C++17 in qt, and may upgrade to a newer version at the same time), and you can't enable -std c++17, while targeting a macOS deployment version < 10.14, configuring will fail. They are making use of std::get with std::variant throughout their cocoa code.
We would have to had to have bumped to at least 10.13 in any case, as Qt 5.15 (#19716) [requires 10.13+](https://doc.qt.io/qt-5/supported-platforms.html).
ACKs for top commit:
hebasto:
ACK a52ecc936a, I have reviewed the code and it looks OK, I agree it can be merged.
Tree-SHA512: f669b2fc777aeea1e9afdbbc7bd9afe3997418211db6ba53c934cae0e62a9b999603da539518c229f34961d275c9e2f315c7b022cf5fb97bd201a69c85d470cc
97c738ff1b [tests] Recommend f-strings for formatting, update feature_block to use them (Anthony Towns)
8ae9d314e9 Bump minimum python version to 3.6 (Anthony Towns)
Pull request description:
Python 3.5 has reached [end-of-life](https://devguide.python.org/#status-of-python-branches) as of September 2020, and 3.6 has some moderately nice [features](https://docs.python.org/3/whatsnew/3.6.html):
- `f'x = {x}'` as an alternative to `'x = {}'.format(x)` format strings (cf https://github.com/bitcoin/bitcoin/pull/13718#issuecomment-406591027)
- underscore separators for large numbers, like `1_234_567`
- improvements to async
- improvements to typing module
Note that 3.6 is not available in xenial (16.04), but is available in bionic (18.04), while focal (20.04) has 3.8. CentOS 7 and 8 have 3.6.8, Debian stable has 3.7.3, and [gentoo and arch already had 3.6 and 3.7 in 2018](https://github.com/bitcoin/bitcoin/pull/14954#issuecomment-447118707).
ACKs for top commit:
MarcoFalke:
re-ACK 97c738ff1b
Tree-SHA512: ec7fce68845edde4d61a42de12c065fd49e5217311a6fda1323206f091a0afd50f293645dffc27d420127e4e5deb864e953f1b67eff735a0dfbbedd7899a9d60
