Merge remote-tracking branch 'btc/master' into btc-master

Conflicts: REVIEWERS SECURITY.md build_msvc/README.md ci/test/06_script_b.sh configure.ac doc/build-netbsd.md src/Makefile.bench.include src/qt/locale/bitcoin_en.xlf src/test/net_tests.cpp test/functional/interface_usdt_net.py test/functional/interface_usdt_utxocache.py test/functional/interface_usdt_validation.py test/functional/rpc_signmessagewithprivkey.py test/functional/test_framework/messages.py
nav-io · Aug 29, 2022 · fa14e51 · fa14e51
2 parents fea3078 + e191fac
commit fa14e51
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diff --git a/.cirrus.yml b/.cirrus.yml
@@ -97,8 +97,8 @@ task:
   name: "Win64 native [vs2022]"
   << : *FILTER_TEMPLATE
   windows_container:
-    cpu: 4
-    memory: 8G
+    cpu: 6
+    memory: 12G
     image: cirrusci/windowsservercore:visualstudio2022
   timeout_in: 120m
   env:
@@ -109,9 +109,9 @@ task:
     VCPKG_DEFAULT_BINARY_CACHE: 'C:\Users\ContainerAdministrator\AppData\Local\vcpkg\archives'
     CCACHE_DIR: 'C:\Users\ContainerAdministrator\AppData\Local\ccache'
     WRAPPED_CL: 'C:\Users\ContainerAdministrator\AppData\Local\Temp\cirrus-ci-build\ci\test\wrapped-cl.bat'
-    QT_DOWNLOAD_URL: 'https://download.qt.io/official_releases/qt/5.15/5.15.3/single/qt-everywhere-opensource-src-5.15.3.zip'
-    QT_LOCAL_PATH: 'C:\qt-everywhere-opensource-src-5.15.3.zip'
-    QT_SOURCE_DIR: 'C:\qt-everywhere-src-5.15.3'
+    QT_DOWNLOAD_URL: 'https://download.qt.io/official_releases/qt/5.15/5.15.5/single/qt-everywhere-opensource-src-5.15.5.zip'
+    QT_LOCAL_PATH: 'C:\qt-everywhere-opensource-src-5.15.5.zip'
+    QT_SOURCE_DIR: 'C:\qt-everywhere-src-5.15.5'
     QTBASEDIR: 'C:\Qt_static'
     x64_NATIVE_TOOLS: '"C:\Program Files (x86)\Microsoft Visual Studio\2022\BuildTools\VC\Auxiliary\Build\vcvars64.bat"'
     QT_CONFIGURE_COMMAND: '..\configure -release -silent -opensource -confirm-license -opengl desktop -static -static-runtime -mp -qt-zlib -qt-pcre -qt-libpng -nomake examples -nomake tests -nomake tools -no-angle -no-dbus -no-gif -no-gtk -no-ico -no-icu -no-libjpeg -no-libudev -no-sql-sqlite -no-sql-odbc -no-sqlite -no-vulkan -skip qt3d -skip qtactiveqt -skip qtandroidextras -skip qtcharts -skip qtconnectivity -skip qtdatavis3d -skip qtdeclarative -skip doc -skip qtdoc -skip qtgamepad -skip qtgraphicaleffects -skip qtimageformats -skip qtlocation -skip qtlottie -skip qtmacextras -skip qtmultimedia -skip qtnetworkauth -skip qtpurchasing -skip qtquick3d -skip qtquickcontrols -skip qtquickcontrols2 -skip qtquicktimeline -skip qtremoteobjects -skip qtscript -skip qtscxml -skip qtsensors -skip qtserialbus -skip qtserialport -skip qtspeech -skip qtsvg -skip qtvirtualkeyboard -skip qtwayland -skip qtwebchannel -skip qtwebengine -skip qtwebglplugin -skip qtwebsockets -skip qtwebview -skip qtx11extras -skip qtxmlpatterns -no-openssl -no-feature-bearermanagement -no-feature-printdialog -no-feature-printer -no-feature-printpreviewdialog -no-feature-printpreviewwidget -no-feature-sql -no-feature-sqlmodel -no-feature-textbrowser -no-feature-textmarkdownwriter -no-feature-textodfwriter -no-feature-xml'
@@ -162,7 +162,7 @@ task:
   ccache_cache:
     folder: '%CCACHE_DIR%'
   install_tools_script:
-    - choco install --yes --no-progress ccache
+    - choco install --yes --no-progress ccache --version=4.6.1
     - choco install --yes --no-progress python3 --version=3.9.6
     - pip install zmq
     - ccache --version
@@ -259,12 +259,20 @@ task:
     MAKEJOBS: "-j4"  # Avoid excessive memory use due to MSan
 
 task:
-  name: '[ASan + LSan + UBSan + integer, no depends] [jammy]'
+  name: '[ASan + LSan + UBSan + integer, no depends, USDT] [jammy]'
   << : *GLOBAL_TASK_TEMPLATE
-  container:
-    image: ubuntu:jammy
+  # We can't use a 'container' for the USDT interface tests as the CirrusCI
+  # containers don't have privileges to hook into bitcoind. CirrusCI uses
+  # Google Compute Engine instances: https://cirrus-ci.org/guide/custom-vms/
+  # Images can be found here: https://cloud.google.com/compute/docs/images/os-details
+  compute_engine_instance:
+    image_project: ubuntu-os-cloud
+    image: family/ubuntu-2204-lts # when upgrading, check if we can drop "ADD_UNTRUSTED_BPFCC_PPA"
+    cpu: 4
+    memory: 12G
   env:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
+    HOME: /root/  # Only needed for compute_engine_instance
     FILE_ENV: "./ci/test/00_setup_env_native_asan.sh"
     MAKEJOBS: "-j4"  # Avoid excessive memory use
 

diff --git a/.tx/config b/.tx/config
@@ -1,7 +1,7 @@
 [main]
 host = https://www.transifex.com
 
-[bitcoin.qt-translation-023x]
+[bitcoin.qt-translation-024x]
 file_filter = src/qt/locale/bitcoin_<lang>.xlf
 source_file = src/qt/locale/bitcoin_en.xlf
 source_lang = en
diff --git a/Makefile.am b/Makefile.am
@@ -23,6 +23,7 @@ endif
 
 BITCOIND_BIN=$(top_builddir)/src/$(BITCOIN_DAEMON_NAME)$(EXEEXT)
 BITCOIN_QT_BIN=$(top_builddir)/src/qt/$(BITCOIN_GUI_NAME)$(EXEEXT)
+BITCOIN_TEST_BIN=$(top_builddir)/src/test/$(BITCOIN_TEST_NAME)$(EXEEXT)
 BITCOIN_CLI_BIN=$(top_builddir)/src/$(BITCOIN_CLI_NAME)$(EXEEXT)
 BITCOIN_TX_BIN=$(top_builddir)/src/$(BITCOIN_TX_NAME)$(EXEEXT)
 BITCOIN_UTIL_BIN=$(top_builddir)/src/$(BITCOIN_UTIL_NAME)$(EXEEXT)
@@ -78,6 +79,7 @@ $(BITCOIN_WIN_INSTALLER): all-recursive
 	$(MKDIR_P) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIND_BIN) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_QT_BIN) $(top_builddir)/release
+	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_TEST_BIN) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_CLI_BIN) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_TX_BIN) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_WALLET_BIN) $(top_builddir)/release

diff --git a/REVIEWERS b/REVIEWERS
@@ -15,121 +15,3 @@
 # review a pull request. Peer review is always welcome and is a critical
 # component of the progress of the codebase. Information on peer review
 # guidelines can be found in the CONTRIBUTING.md doc.
-
-
-# Maintainers
-#   @aguycalled
-
-# Docs
-/doc/*[a-zA-Z-].md                          @aguycalled
-/doc/Doxyfile.in                            @aguycalled
-/doc/REST-interface.md                      @aguycalled
-/doc/benchmarking.md                        @aguycalled
-/doc/bitcoin-conf.md                        @aguycalled
-/doc/build-freebsd.md                       @aguycalled
-/doc/build-netbsd.md                        @aguycalled
-/doc/build-openbsd.md                       @aguycalled
-/doc/build-osx.md                           @aguycalled
-/doc/build-unix.md                          @aguycalled
-/doc/build-windows.md                       @aguycalled
-/doc/dependencies.md                        @aguycalled
-/doc/developer-notes.md                     @aguycalled
-/doc/files.md                               @aguycalled
-/doc/reduce-memory.md                       @aguycalled
-/doc/reduce-traffic.md                      @aguycalled
-/doc/release-process.md                     @aguycalled
-/doc/translation_strings_policy.md          @aguycalled
-
-# Build aux
-/build-aux/m4/bitcoin_qt.m4                 @aguycalled
-
-# MSVC build system
-/build_msvc/                                @aguycalled
-
-# Settings
-/src/util/settings.*                        @aguycalled
-
-# Fuzzing
-
-# Tests
-/src/test/net_peer_eviction_tests.cpp       @aguycalled
-/test/functional/mempool_updatefromblock.py @aguycalled
-/test/functional/feature_asmap.py           @aguycalled
-/test/functional/interface_bitcoin_cli.py   @aguycalled
-
-# Backwards compatibility tests
-*_compatibility.py                          @aguycalled
-/test/functional/wallet_upgradewallet.py    @aguycalled
-/test/get_previous_releases.py              @aguycalled
-
-# Translations
-/src/util/translation.h                     @aguycalled
-
-# Dev Tools
-/contrib/devtools/security-check.py         @aguycalled
-/contrib/devtools/test-security-check.py    @aguycalled
-/contrib/devtools/symbol-check.py           @aguycalled
-
-# Guix
-/contrib/guix/                              @aguycalled
-
-# Compatibility
-/src/compat/glibc_*                         @aguycalled
-
-# GUI
-/src/qt/forms/                              @aguycalled
-
-# Wallet
-/src/wallet/                                @aguycalled
-
-# CLI
-/src/bitcoin-cli.cpp                        @aguycalled
-
-# Coinstats
-/src/node/coinstats.*                       @aguycalled
-
-# Index
-/src/index/                                 @aguycalled
-
-# Descriptors
-*descriptor*                                @aguycalled
-
-# External signer
-*external_signer*                           @aguycalled
-/doc/external-signer.md                     @aguycalled
-*signer.py                                  @aguycalled
-
-# Interfaces
-/src/interfaces/                            @aguycalled
-
-# DB
-/src/txdb.*                                 @aguycalled
-/src/dbwrapper.*                            @aguycalled
-
-# Linter
-/test/lint/lint-shell.py                    @aguycalled
-
-# Bech32
-/src/bech32.*                               @aguycalled
-/src/bench/bech32.*                         @aguycalled
-
-# PSBT
-/src/psbt*                                  @aguycalled
-/src/node/psbt*                             @aguycalled
-/doc/psbt.md                                @aguycalled
-
-# P2P
-/src/net_processing.*                       @aguycalled
-/src/protocol.*                             @aguycalled
-
-# Consensus
-/src/coins.*                                @aguycalled
-/src/script/script.*                        @aguycalled
-/src/script/interpreter.*                   @aguycalled
-/src/validation.*                           @aguycalled
-/src/consensus/                             @aguycalled
-
-# Tracing
-/doc/tracing.md                             @aguycalled
-/src/util/trace.h                           @aguycalled
-/contrib/tracing/                           @aguycalled
diff --git a/build-aux/m4/l_atomic.m4 b/build-aux/m4/l_atomic.m4
@@ -18,7 +18,7 @@ m4_define([_CHECK_ATOMIC_testbody], [[
 
   int main() {
     std::atomic<bool> lock{true};
-    std::atomic_exchange(&lock, false);
+    lock.exchange(false);
 
     std::atomic<std::chrono::seconds> t{0s};
     t.store(2s);
@@ -34,6 +34,8 @@ m4_define([_CHECK_ATOMIC_testbody], [[
 AC_DEFUN([CHECK_ATOMIC], [
 
   AC_LANG_PUSH(C++)
+  TEMP_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
 
   AC_MSG_CHECKING([whether std::atomic can be used without link library])
 
@@ -51,5 +53,6 @@ AC_DEFUN([CHECK_ATOMIC], [
         ])
     ])
 
+  CXXFLAGS="$TEMP_CXXFLAGS"
   AC_LANG_POP
 ])
diff --git a/build_msvc/README.md b/build_msvc/README.md
@@ -3,7 +3,9 @@ Building Navcoin Core with Visual Studio
 
 Introduction
 ---------------------
-Solution and project files to build Navcoin Core with `msbuild` or Visual Studio can be found in the `build_msvc` directory. The build has been tested with Visual Studio 2022 and Visual Studio 2019 (building with earlier versions of Visual Studio should not be expected to work).
+Visual Studio 2022 is minimum required to build Navcoin Core.
+
+Solution and project files to build with `msbuild` or Visual Studio can be found in the `build_msvc` directory.
 
 To build Navcoin Core from the command-line, it is sufficient to only install the Visual Studio Build Tools component.
 
@@ -28,7 +30,7 @@ Qt
 ---------------------
 To build Navcoin Core with the GUI, a static build of Qt is required.
 
-1. Download a single ZIP archive of Qt source code from https://download.qt.io/official_releases/qt/ (e.g., [`qt-everywhere-opensource-src-5.15.3.zip`](https://download.qt.io/official_releases/qt/5.15/5.15.3/single/qt-everywhere-opensource-src-5.15.3.zip)), and expand it into a dedicated folder. The following instructions assume that this folder is `C:\dev\qt-source`.
+1. Download a single ZIP archive of Qt source code from https://download.qt.io/official_releases/qt/ (e.g., [`qt-everywhere-opensource-src-5.15.5.zip`](https://download.qt.io/official_releases/qt/5.15/5.15.5/single/qt-everywhere-opensource-src-5.15.5.zip)), and expand it into a dedicated folder. The following instructions assume that this folder is `C:\dev\qt-source`.
 
 2. Open "x64 Native Tools Command Prompt for VS 2022", and input the following commands:
 ```cmd

diff --git a/build_msvc/bitcoin_config.h.in b/build_msvc/bitcoin_config.h.in
@@ -50,8 +50,8 @@
 /* Define this symbol if the consensus lib has been built */
 #define HAVE_CONSENSUS_LIB 1
 
-/* define if the compiler supports basic C++17 syntax */
-#define HAVE_CXX17 1
+/* define if the compiler supports basic C++20 syntax */
+#define HAVE_CXX20 1
 
 /* Define to 1 if you have the declaration of `be16toh', and to 0 if you
    don't. */

diff --git a/build_msvc/common.init.vcxproj.in b/build_msvc/common.init.vcxproj.in
@@ -87,10 +87,10 @@
     <ClCompile>
       <WarningLevel>Level3</WarningLevel>
       <PrecompiledHeader>NotUsing</PrecompiledHeader>
-      <AdditionalOptions>/utf-8 /Zc:__cplusplus /std:c++17 %(AdditionalOptions)</AdditionalOptions>
+      <AdditionalOptions>/utf-8 /Zc:__cplusplus /std:c++20 %(AdditionalOptions)</AdditionalOptions>
       <DisableSpecificWarnings>4018;4244;4267;4334;4715;4805;4834</DisableSpecificWarnings>
       <TreatWarningAsError>true</TreatWarningAsError>
-      <PreprocessorDefinitions>DISABLE_DESIGNATED_INITIALIZER_ERRORS;_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;_SILENCE_CXX17_OLD_ALLOCATOR_MEMBERS_DEPRECATION_WARNING;ZMQ_STATIC;NOMINMAX;WIN32;HAVE_CONFIG_H;_CRT_SECURE_NO_WARNINGS;_SCL_SECURE_NO_WARNINGS;_CONSOLE;_WIN32_WINNT=0x0601;_WIN32_IE=0x0501;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>_SILENCE_CXX17_CODECVT_HEADER_DEPRECATION_WARNING;ZMQ_STATIC;NOMINMAX;WIN32;HAVE_CONFIG_H;_CRT_SECURE_NO_WARNINGS;_SCL_SECURE_NO_WARNINGS;_CONSOLE;_WIN32_WINNT=0x0601;_WIN32_IE=0x0501;WIN32_LEAN_AND_MEAN;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <AdditionalIncludeDirectories>..\..\src;..\..\src\minisketch\include;..\..\src\univalue\include;..\..\src\secp256k1\include;..\..\src\leveldb\include;..\..\src\leveldb\helpers\memenv;%(AdditionalIncludeDirectories)</AdditionalIncludeDirectories>
     </ClCompile>
     <Link>

diff --git a/build_msvc/msvc-autogen.py b/build_msvc/msvc-autogen.py
@@ -93,7 +93,7 @@ def set_properties(vcxproj_filename, placeholder, content):
 def main():
     parser = argparse.ArgumentParser(description='Bitcoin-core msbuild configuration initialiser.')
     parser.add_argument('-toolset', nargs='?', default=DEFAULT_PLATFORM_TOOLSET,
-        help='Optionally sets the msbuild platform toolset, e.g. v142 for Visual Studio 2019, or v143 for Visual Studio 2022.'
+        help='Optionally sets the msbuild platform toolset, e.g. v143 for Visual Studio 2022.'
          ' default is %s.'%DEFAULT_PLATFORM_TOOLSET)
     args = parser.parse_args()
     set_properties(os.path.join(SOURCE_DIR, '../build_msvc/common.init.vcxproj'), '@TOOLSET@', args.toolset)

diff --git a/ci/test/00_setup_env_native_asan.sh b/ci/test/00_setup_env_native_asan.sh
@@ -6,9 +6,14 @@
 
 export LC_ALL=C.UTF-8
 
+# We install an up-to-date 'bpfcc-tools' package from an untrusted PPA.
+# This can be dropped with the next Ubuntu or Debian release that includes up-to-date packages.
+# See the if-then in ci/test/04_install.sh too.
+export ADD_UNTRUSTED_BPFCC_PPA=true
+
 export CONTAINER_NAME=ci_native_asan
-export PACKAGES="clang llvm python3-zmq qtbase5-dev qttools5-dev-tools libevent-dev bsdmainutils libboost-dev libdb5.3++-dev libminiupnpc-dev libnatpmp-dev libzmq3-dev libqrencode-dev libsqlite3-dev"
-export DOCKER_NAME_TAG=ubuntu:22.04
+export PACKAGES="systemtap-sdt-dev bpfcc-tools clang llvm python3-zmq qtbase5-dev qttools5-dev-tools libevent-dev bsdmainutils libboost-dev libdb5.3++-dev libminiupnpc-dev libnatpmp-dev libzmq3-dev libqrencode-dev libsqlite3-dev"
+export DOCKER_NAME_TAG=ubuntu:22.04  # May not run in docker unless --enable-usdt is dropped
 export NO_DEPENDS=1
 export GOAL="install"
-export BITCOIN_CONFIG="--enable-c++20 --enable-zmq --with-incompatible-bdb --with-gui=qt5 CPPFLAGS='-DARENA_DEBUG -DDEBUG_LOCKORDER' --with-sanitizers=address,integer,undefined CC=clang CXX=clang++"
+export BITCOIN_CONFIG="--enable-usdt --enable-zmq --with-incompatible-bdb --with-gui=qt5 CPPFLAGS='-DARENA_DEBUG -DDEBUG_LOCKORDER' --with-sanitizers=address,integer,undefined CC=clang CXX=clang++"
diff --git a/ci/test/00_setup_env_native_fuzz_with_valgrind.sh b/ci/test/00_setup_env_native_fuzz_with_valgrind.sh
@@ -16,5 +16,5 @@ export RUN_FUZZ_TESTS=true
 export FUZZ_TESTS_CONFIG="--valgrind"
 export GOAL="install"
 # Temporarily pin dwarf 4, until valgrind can understand clang's dwarf 5
-export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer CC=clang CXX=clang++ CXXFLAGS='-fdebug-default-version=4'"
+export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer CC=clang CXX=clang++ CFLAGS='-gdwarf-4' CXXFLAGS='-gdwarf-4'"
 export CCACHE_SIZE=200M
diff --git a/ci/test/00_setup_env_native_qt5.sh b/ci/test/00_setup_env_native_qt5.sh
@@ -14,6 +14,6 @@ export TEST_RUNNER_EXTRA="--previous-releases --coverage --extended --exclude fe
 export RUN_UNIT_TESTS_SEQUENTIAL="true"
 export RUN_UNIT_TESTS="false"
 export GOAL="install"
-export PREVIOUS_RELEASES_TO_DOWNLOAD="v0.14.3 v0.15.2 v0.16.3 v0.17.2 v0.18.1 v0.19.1 v0.20.1 v0.21.0 v22.0 v23.0"
+export DOWNLOAD_PREVIOUS_RELEASES="true"
 export BITCOIN_CONFIG="--enable-zmq --with-libs=no --with-gui=qt5 --enable-reduce-exports \
 --enable-debug CFLAGS=\"-g0 -O2 -funsigned-char\" CXXFLAGS=\"-g0 -O2 -funsigned-char\" CC=gcc-8 CXX=g++-8"
diff --git a/ci/test/00_setup_env_native_tidy.sh b/ci/test/00_setup_env_native_tidy.sh
@@ -15,5 +15,5 @@ export RUN_FUNCTIONAL_TESTS=false
 export RUN_FUZZ_TESTS=false
 export RUN_TIDY=true
 export GOAL="install"
-export BITCOIN_CONFIG="CC=clang CXX=clang++ --with-incompatible-bdb --disable-hardening CFLAGS='-O0 -g0' CXXFLAGS='-O0 -g0'"
+export BITCOIN_CONFIG="CC=clang CXX=clang++ --enable-c++20 --with-incompatible-bdb --disable-hardening CFLAGS='-O0 -g0' CXXFLAGS='-O0 -g0'"
 export CCACHE_SIZE=200M
diff --git a/ci/test/00_setup_env_native_valgrind.sh b/ci/test/00_setup_env_native_valgrind.sh
@@ -14,4 +14,4 @@ export NO_DEPENDS=1
 export TEST_RUNNER_EXTRA="--nosandbox --exclude feature_init,rpc_bind,feature_bind_extra"  # Excluded for now, see https://github.com/bitcoin/bitcoin/issues/17765#issuecomment-602068547
 export GOAL="install"
 # Temporarily pin dwarf 4, until valgrind can understand clang's dwarf 5
-export BITCOIN_CONFIG="--enable-zmq --with-incompatible-bdb --with-gui=no CC=clang CXX=clang++ CXXFLAGS='-fdebug-default-version=4'"  # TODO enable GUI
+export BITCOIN_CONFIG="--enable-zmq --with-incompatible-bdb --with-gui=no CC=clang CXX=clang++ CFLAGS='-gdwarf-4' CXXFLAGS='-gdwarf-4'"  # TODO enable GUI
diff --git a/ci/test/04_install.sh b/ci/test/04_install.sh
@@ -68,6 +68,14 @@ if [[ $DOCKER_NAME_TAG == *centos* ]]; then
   ${CI_RETRY_EXE} CI_EXEC dnf -y install epel-release
   ${CI_RETRY_EXE} CI_EXEC dnf -y --allowerasing install "$DOCKER_PACKAGES" "$PACKAGES"
 elif [ "$CI_USE_APT_INSTALL" != "no" ]; then
+  if [[ "${ADD_UNTRUSTED_BPFCC_PPA}" == "true" ]]; then
+    # Ubuntu 22.04 LTS and Debian 11 both have an outdated bpfcc-tools packages.
+    # The iovisor PPA is outdated as well. The next Ubuntu and Debian releases will contain updated
+    # packages. Meanwhile, use an untrusted PPA to install an up-to-date version of the bpfcc-tools
+    # package.
+    # TODO: drop this once we can use newer images in GCE
+    CI_EXEC add-apt-repository ppa:hadret/bpfcc
+  fi
   ${CI_RETRY_EXE} CI_EXEC apt-get update
   ${CI_RETRY_EXE} CI_EXEC apt-get install --no-install-recommends --no-upgrade -y "$PACKAGES" "$DOCKER_PACKAGES"
   if [ -n "$PIP_PACKAGES" ]; then

diff --git a/ci/test/05_before_script.sh b/ci/test/05_before_script.sh
@@ -47,6 +47,6 @@ if [ -z "$NO_DEPENDS" ]; then
   fi
   CI_EXEC "$SHELL_OPTS" make "$MAKEJOBS" -C depends HOST="$HOST" "$DEP_OPTS" LOG=1
 fi
-if [ -n "$PREVIOUS_RELEASES_TO_DOWNLOAD" ]; then
-  CI_EXEC test/get_previous_releases.py -b -t "$PREVIOUS_RELEASES_DIR" "${PREVIOUS_RELEASES_TO_DOWNLOAD}"
+if [ "$DOWNLOAD_PREVIOUS_RELEASES" = "true" ]; then
+  CI_EXEC test/get_previous_releases.py -b -t "$PREVIOUS_RELEASES_DIR"
 fi
diff --git a/ci/test/06_script_a.sh b/ci/test/06_script_a.sh
@@ -11,16 +11,19 @@ if [ -z "$NO_WERROR" ]; then
   BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-werror"
 fi
 
+CI_EXEC "ccache --zero-stats --max-size=$CCACHE_SIZE"
+PRINT_CCACHE_STATISTICS="ccache --version | head -n 1 && ccache --show-stats"
+
 if [ -n "$ANDROID_TOOLS_URL" ]; then
   CI_EXEC make distclean || true
   CI_EXEC ./autogen.sh
   CI_EXEC ./configure "$BITCOIN_CONFIG_ALL" "$BITCOIN_CONFIG" || ( (CI_EXEC cat config.log) && false)
   CI_EXEC "make $MAKEJOBS && cd src/qt && ANDROID_HOME=${ANDROID_HOME} ANDROID_NDK_HOME=${ANDROID_NDK_HOME} make apk"
+  CI_EXEC "${PRINT_CCACHE_STATISTICS}"
   exit 0
 fi
 
 BITCOIN_CONFIG_ALL="${BITCOIN_CONFIG_ALL} --enable-external-signer --bindir=$BASE_OUTDIR/bin --libdir=$BASE_OUTDIR/lib"
-CI_EXEC "ccache --zero-stats --max-size=$CCACHE_SIZE"
 
 if [ -n "$CONFIG_SHELL" ]; then
   CI_EXEC "$CONFIG_SHELL" -c "./autogen.sh"
@@ -57,6 +60,6 @@ fi
 
 CI_EXEC "${MAYBE_BEAR}" "${MAYBE_TOKEN}" make "$MAKEJOBS" "$GOAL" || ( echo "Build failure. Verbose build follows." && CI_EXEC make "$GOAL" V=1 ; false )
 
-CI_EXEC "ccache --version | head -n 1 && ccache --show-stats"
+CI_EXEC "${PRINT_CCACHE_STATISTICS}"
 CI_EXEC du -sh "${DEPENDS_DIR}"/*/
 CI_EXEC du -sh "${PREVIOUS_RELEASES_DIR}"