TheCharlatan
diff --git a/‎.github/ISSUE_TEMPLATE/bug.yml‎
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diff --git a/‎.github/actions/configure-docker/action.yml‎
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diff --git a/‎.github/actions/configure-environment/action.yml‎
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diff --git a/‎.github/workflows/ci.yml‎
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diff --git a/‎CMakeLists.txt‎
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diff --git a/‎ci/README.md‎
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diff --git a/‎ci/test/00_setup_env_mac_cross.sh‎
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diff --git a/‎ci/test/00_setup_env_mac_cross_intel.sh‎
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diff --git a/‎ci/test/00_setup_env_mac_native_fuzz.sh‎
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diff --git a/‎ci/test/00_setup_env_native_centos.sh‎ renamed to ‎ci/test/00_setup_env_native_alpine_musl.sh‎
Lines changed: 4 additions & 4 deletions b/‎ci/test/00_setup_env_native_centos.sh‎ renamed to ‎ci/test/00_setup_env_native_alpine_musl.sh‎
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@@ -78,7 +78,7 @@ body:
     id: os
     attributes:
       label: Operating system and version
-      placeholder: e.g. "MacOS Ventura 13.2" or "Ubuntu 22.04 LTS"
+      placeholder: e.g. "MacOS 26.0" or "Ubuntu 26.04 LTS"
     validations:
       required: true
   - type: textarea
@@ -90,4 +90,3 @@ body:
         e.g. OS/CPU and disk type, network connectivity
     validations:
       required: false
-
@@ -22,8 +22,12 @@ runs:
       uses: actions/github-script@v6
       with:
         script: |
-          core.exportVariable('ACTIONS_CACHE_URL', process.env['ACTIONS_CACHE_URL'])
-          core.exportVariable('ACTIONS_RUNTIME_TOKEN', process.env['ACTIONS_RUNTIME_TOKEN'])
+          Object.keys(process.env).forEach(function (key) {
+            if (key.startsWith('ACTIONS_')) {
+              core.info(`Exporting ${key}`);
+              core.exportVariable(key, process.env[key]);
+            }
+          });
 
     - name: Construct docker build cache args
       shell: bash
@@ -44,8 +48,8 @@ runs:
         # Always optimistically --cache‑from in case a cache blob exists
         args=(--cache-from "type=gha${url_args:+,${url_args}},scope=${CONTAINER_NAME}")
 
-        # If this is a push to the default branch, also add --cache‑to to save the cache
-        if [[ ${{ github.event_name }} == "push" && ${{ github.ref_name }} == ${{ github.event.repository.default_branch }} ]]; then
+        # Only add --cache-to when using the Cirrus cache provider and pushing to the default branch.
+        if [[ ${{ inputs.cache-provider }} == 'cirrus' && ${{ github.event_name }} == "push" && ${{ github.ref_name }} == ${{ github.event.repository.default_branch }} ]]; then
           args+=(--cache-to "type=gha${url_args:+,${url_args}},mode=max,ignore-error=true,scope=${CONTAINER_NAME}")
         fi
 
 
@@ -17,7 +17,7 @@ runs:
     - name: Set cache hashes
       shell: bash
       run: |
-        echo "DEPENDS_HASH=$(git ls-tree HEAD depends "ci/test/$FILE_ENV" | sha256sum | cut -d' ' -f1)" >> $GITHUB_ENV
+        echo "DEPENDS_HASH=$(git ls-tree HEAD depends "$FILE_ENV" | sha256sum | cut -d' ' -f1)" >> $GITHUB_ENV
         echo "PREVIOUS_RELEASES_HASH=$(git ls-tree HEAD test/get_previous_releases.py | sha256sum | cut -d' ' -f1)" >> $GITHUB_ENV
 
     - name: Get container name
 
@@ -381,7 +381,7 @@ jobs:
       - *CHECKOUT
 
       - name: Download built executables
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v5
         with:
           name: x86_64-w64-mingw32-executables-${{ github.run_id }}
 
@@ -433,8 +433,7 @@ jobs:
           echo "PREVIOUS_RELEASES_DIR=${{ runner.temp }}/previous_releases" >> "$GITHUB_ENV"
 
       - name: Get previous releases
-        working-directory: test
-        run: ./get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR
+        run: ./test/get_previous_releases.py --target-dir $PREVIOUS_RELEASES_DIR
 
       - name: Run functional tests
         env:
@@ -472,12 +471,18 @@ jobs:
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_asan.sh'
 
-          - name: 'macOS-cross, gui, no tests'
+          - name: 'macOS-cross to arm64'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_mac_cross.sh'
 
+          - name: 'macOS-cross to x86_64'
+            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
+            fallback-runner: 'ubuntu-24.04'
+            timeout-minutes: 120
+            file-env: './ci/test/00_setup_env_mac_cross_intel.sh'
+
           - name: 'No wallet, libbitcoinkernel'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-sm'
             fallback-runner: 'ubuntu-24.04'
@@ -496,17 +501,23 @@ jobs:
             timeout-minutes: 240
             file-env: './ci/test/00_setup_env_native_fuzz.sh'
 
+          - name: 'Valgrind, fuzz'
+            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
+            fallback-runner: 'ubuntu-24.04'
+            timeout-minutes: 240
+            file-env: './ci/test/00_setup_env_native_fuzz_with_valgrind.sh'
+
           - name: 'previous releases, depends DEBUG'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
             file-env: './ci/test/00_setup_env_native_previous_releases.sh'
 
-          - name: 'CentOS, depends, gui'
-            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-lg'
+          - name: 'Alpine (musl), depends, gui'
+            cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
             fallback-runner: 'ubuntu-24.04'
             timeout-minutes: 120
-            file-env: './ci/test/00_setup_env_native_centos.sh'
+            file-env: './ci/test/00_setup_env_native_alpine_musl.sh'
 
           - name: 'tidy'
             cirrus-runner: 'ghcr.io/cirruslabs/ubuntu-runner-amd64:24.04-md'
 
@@ -632,7 +632,6 @@ if(CMAKE_SYSTEM_NAME STREQUAL "NetBSD")
   set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 else()
   set(CMAKE_SKIP_BUILD_RPATH TRUE)
-  set(CMAKE_SKIP_INSTALL_RPATH TRUE)
 endif()
 add_subdirectory(test)
 add_subdirectory(doc)
 
@@ -20,6 +20,14 @@ requires `bash`, `docker`, and `python3` to be installed. To run on different ar
 sudo apt install bash docker.io python3 qemu-user-static
 ```
 
+For some sanitizer builds, the kernel's address-space layout randomization
+(ASLR) entropy can cause sanitizer shadow memory mappings to fail. When running
+the CI locally you may need to reduce that entropy by running:
+
+```
+sudo sysctl -w vm.mmap_rnd_bits=28
+```
+
 It is recommended to run the ci system in a clean env. To run the test stage
 with a specific configuration,
 
 
@@ -9,8 +9,8 @@ export LC_ALL=C.UTF-8
 export SDK_URL=${SDK_URL:-https://bitcoincore.org/depends-sources/sdks}
 
 export CONTAINER_NAME=ci_macos_cross
-export CI_IMAGE_NAME_TAG="mirror.gcr.io/ubuntu:24.04"
-export HOST=x86_64-apple-darwin
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie" # Check that https://packages.debian.org/trixie/clang (version 19, similar to guix) can cross-compile
+export HOST=arm64-apple-darwin
 export PACKAGES="clang lld llvm zip"
 export XCODE_VERSION=15.0
 export XCODE_BUILD_ID=15A240d
 
@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+export SDK_URL=${SDK_URL:-https://bitcoincore.org/depends-sources/sdks}
+
+export CONTAINER_NAME=ci_macos_cross_intel
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/debian:trixie" # Check that https://packages.debian.org/trixie/clang (version 19, similar to guix) can cross-compile
+export HOST=x86_64-apple-darwin
+export PACKAGES="clang lld llvm zip"
+export XCODE_VERSION=15.0
+export XCODE_BUILD_ID=15A240d
+export RUN_UNIT_TESTS=false
+export RUN_FUNCTIONAL_TESTS=false
+export GOAL="deploy"
+export BITCOIN_CONFIG="-DBUILD_GUI=ON -DREDUCE_EXPORTS=ON"
@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME="ci_mac_native_fuzz"  # macos does not use a container, but the env var is needed for logging
 export CMAKE_GENERATOR="Ninja"
-export BITCOIN_CONFIG="-DBUILD_FOR_FUZZING=ON -DCMAKE_EXE_LINKER_FLAGS='-Wl,-stack_size -Wl,0x80000'"
+export BITCOIN_CONFIG="-DBUILD_FOR_FUZZING=ON -DCMAKE_EXE_LINKER_FLAGS='-Wl,-stack_size -Wl,0x80000' -DAPPEND_CPPFLAGS='-D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_DEBUG'"
 export CI_OS_NAME="macos"
 export NO_DEPENDS=1
 export OSX_SDK=""
 
@@ -6,10 +6,10 @@
 
 export LC_ALL=C.UTF-8
 
-export CONTAINER_NAME=ci_native_centos
-export CI_IMAGE_NAME_TAG="quay.io/centos/centos:stream10"
-export CI_BASE_PACKAGES="gcc-c++ glibc-devel libstdc++-devel ccache make ninja-build git python3 python3-pip which patch xz procps-ng rsync coreutils bison e2fsprogs cmake dash"
-export PIP_PACKAGES="pyzmq pycapnp"
+export CONTAINER_NAME=ci_native_alpine_musl
+export CI_IMAGE_NAME_TAG="mirror.gcr.io/alpine:3.22"
+export CI_BASE_PACKAGES="build-base musl-dev pkgconf curl ccache make ninja git python3 py3-pip which patch xz procps rsync util-linux bison e2fsprogs cmake dash linux-headers"
+export PIP_PACKAGES="--break-system-packages pyzmq pycapnp"
 export DEP_OPTS="DEBUG=1"
 export GOAL="install"
 export BITCOIN_CONFIG="\