Merge branch '3.14' into backport-ff2577f-3.14

Author: ambv

.github/CODEOWNERS

@@ -6,6 +6,9 @@
 
 # GitHub
 .github/**                    @ezio-melotti @hugovk @AA-Turner @webknjaz
+.github/workflows/jit.yml     @savannahostrowski
+Tools/build/compute-changes.py              @AA-Turner @hugovk @webknjaz
+Lib/test/test_tools/test_compute_changes.py @AA-Turner @hugovk @webknjaz
 
 # pre-commit
 .pre-commit-config.yaml       @hugovk
@@ -161,6 +164,7 @@ Doc/c-api/module.rst          @ericsnowcurrently
 # Dates and times
 **/*datetime*                 @pganssle @abalkin
 **/*str*time*                 @pganssle @abalkin
+Doc/library/datetime-*        @pganssle
 Doc/library/time.rst          @pganssle @abalkin
 Lib/test/test_time.py         @pganssle @abalkin
 Modules/timemodule.c          @pganssle @abalkin

.github/actionlint.yaml

@@ -1,8 +1,3 @@
-self-hosted-runner:
-  # Pending https://github.com/rhysd/actionlint/issues/533
-  # and https://github.com/rhysd/actionlint/issues/571
-  labels: ["windows-11-arm", "macos-15-intel"]
-
 config-variables: null
 
 paths:

.github/workflows/build.yml

@@ -64,7 +64,7 @@ jobs:
       - name: Install dependencies
         run: |
             sudo ./.github/workflows/posix-deps-apt.sh
-            sudo apt-get install -yq abigail-tools
+            sudo apt-get install -yq --no-install-recommends abigail-tools
       - name: Build CPython
         env:
           CFLAGS: -g3 -O0
@@ -158,8 +158,6 @@ jobs:
         run: echo "IMAGE_OS_VERSION=${ImageOS}-${ImageVersion}" >> "$GITHUB_ENV"
       - name: Install dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
-      - name: Add ccache to PATH
-        run: echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
       - name: Configure CPython
         run: |
           # Build Python with the libpython dynamic library
@@ -303,7 +301,7 @@ jobs:
         # Keep 1.1.1w in our list despite it being upstream EOL and otherwise
         # unsupported as it most resembles other 1.1.1-work-a-like ssl APIs
         # supported by important vendors such as AWS-LC.
-        openssl_ver: [1.1.1w, 3.0.18, 3.2.6, 3.3.5, 3.4.3, 3.5.4]
+        openssl_ver: [1.1.1w, 3.0.19, 3.3.6, 3.4.4, 3.5.5, 3.6.1]
         # See Tools/ssl/make_ssl_data.py for notes on adding a new version
     env:
       OPENSSL_VER: ${{ matrix.openssl_ver }}
@@ -334,9 +332,6 @@ jobs:
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory "$MULTISSL_DIR" --openssl "$OPENSSL_VER" --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
     - name: Configure CPython
       run: ./configure CFLAGS="-fdiagnostics-format=json" --config-cache --enable-slower-safety --with-pydebug --with-openssl="$OPENSSL_DIR"
     - name: Build CPython
@@ -428,9 +423,6 @@ jobs:
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory "$MULTISSL_DIR" --openssl "$OPENSSL_VER" --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
     - name: Setup directory envs for out-of-tree builds
       run: |
         echo "CPYTHON_RO_SRCDIR=$(realpath -m "${GITHUB_WORKSPACE}"/../cpython-ro-srcdir)" >> "$GITHUB_ENV"
@@ -546,9 +538,6 @@ jobs:
     - name: Install OpenSSL
       if: steps.cache-openssl.outputs.cache-hit != 'true'
       run: python3 Tools/ssl/multissltests.py --steps=library --base-directory "$MULTISSL_DIR" --openssl "$OPENSSL_VER" --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
     - name: Configure CPython
       run: ./configure --config-cache --with-address-sanitizer --without-pymalloc
     - name: Build CPython

.github/workflows/jit.yml

@@ -1,21 +1,15 @@
 name: JIT
 on:
   pull_request:
-    paths:
+    paths: &paths
       - '**jit**'
       - 'Python/bytecodes.c'
       - 'Python/optimizer*.c'
       - '!Python/perf_jit_trampoline.c'
       - '!**/*.md'
       - '!**/*.ini'
   push:
-    paths:
-      - '**jit**'
-      - 'Python/bytecodes.c'
-      - 'Python/optimizer*.c'
-      - '!Python/perf_jit_trampoline.c'
-      - '!**/*.md'
-      - '!**/*.ini'
+    paths: *paths
   workflow_dispatch:
 
 permissions:
@@ -27,12 +21,13 @@ concurrency:
 
 env:
   FORCE_COLOR: 1
+  LLVM_VERSION: 19
 
 jobs:
   interpreter:
     name: Interpreter (Debug)
     runs-on: ubuntu-24.04
-    timeout-minutes: 90
+    timeout-minutes: 60
     steps:
       - uses: actions/checkout@v6
         with:
@@ -44,27 +39,22 @@ jobs:
       - name: Test tier two interpreter
         run: |
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-  jit:
+
+  windows:
     name: ${{ matrix.target }} (${{ matrix.debug && 'Debug' || 'Release' }})
-    needs: interpreter
+
     runs-on: ${{ matrix.runner }}
-    timeout-minutes: 90
+    timeout-minutes: 60
     strategy:
       fail-fast: false
       matrix:
         target:
           - i686-pc-windows-msvc/msvc
           - x86_64-pc-windows-msvc/msvc
           - aarch64-pc-windows-msvc/msvc
-          - x86_64-apple-darwin/clang
-          - aarch64-apple-darwin/clang
-          - x86_64-unknown-linux-gnu/gcc
-          - aarch64-unknown-linux-gnu/gcc
         debug:
           - true
           - false
-        llvm:
-          - 19
         include:
           - target: i686-pc-windows-msvc/msvc
             architecture: Win32
@@ -75,103 +65,134 @@ jobs:
           - target: aarch64-pc-windows-msvc/msvc
             architecture: ARM64
             runner: windows-11-arm
-          - target: x86_64-apple-darwin/clang
-            architecture: x86_64
-            runner: macos-15-intel
-          - target: aarch64-apple-darwin/clang
-            architecture: aarch64
-            runner: macos-14
-          - target: x86_64-unknown-linux-gnu/gcc
-            architecture: x86_64
-            runner: ubuntu-24.04
-          - target: aarch64-unknown-linux-gnu/gcc
-            architecture: aarch64
-            runner: ubuntu-24.04-arm
     steps:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: actions/setup-python@v6
         with:
           python-version: '3.11'
-
       # PCbuild downloads LLVM automatically:
-      - name: Windows
-        if: runner.os == 'Windows'
+      - name: Build
         run: |
           ./PCbuild/build.bat --experimental-jit ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }}
+      - name: Test
+        run: |
           ./PCbuild/rt.bat ${{ matrix.debug && '-d' || '' }} -p ${{ matrix.architecture }} -q --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      - name: macOS
-        if: runner.os == 'macOS'
+  macos:
+    name: ${{ matrix.target }} (${{ matrix.debug && 'Debug' || 'Release' }})
+
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - x86_64-apple-darwin/clang
+          - aarch64-apple-darwin/clang
+        debug:
+          - true
+          - false
+        include:
+          - target: x86_64-apple-darwin/clang
+            runner: macos-15-intel
+          - target: aarch64-apple-darwin/clang
+            runner: macos-14
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.11'
+      - name: Install LLVM
         run: |
           brew update
-          brew install llvm@${{ matrix.llvm }}
+          brew install llvm@${{ env.LLVM_VERSION }}
+      - name: Build
+        run: |
           export SDKROOT="$(xcrun --show-sdk-path)"
           # Set MACOSX_DEPLOYMENT_TARGET and -Werror=unguarded-availability to
           # make sure we don't break downstream distributors (like uv):
           export CFLAGS_JIT='-Werror=unguarded-availability'
           export MACOSX_DEPLOYMENT_TARGET=10.15
           ./configure --enable-experimental-jit --enable-universalsdk --with-universal-archs=universal2 ${{ matrix.debug && '--with-pydebug' || '' }}
           make all --jobs 4
+      - name: Test
+        run: |
           ./python.exe -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-      - name: Linux
-        if: runner.os == 'Linux'
+  linux:
+    name: ${{ matrix.target }} (${{ matrix.debug && 'Debug' || 'Release' }})
+
+    runs-on: ${{ matrix.runner }}
+    timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        target:
+          - x86_64-unknown-linux-gnu/gcc
+          - aarch64-unknown-linux-gnu/gcc
+        debug:
+          - true
+          - false
+        include:
+          - target: x86_64-unknown-linux-gnu/gcc
+            runner: ubuntu-24.04
+          - target: aarch64-unknown-linux-gnu/gcc
+            runner: ubuntu-24.04-arm
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@v6
+        with:
+          python-version: '3.11'
+      - name: Build
         run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
+          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ env.LLVM_VERSION }}
+          export PATH="$(llvm-config-${{ env.LLVM_VERSION }} --bindir):$PATH"
           ./configure --enable-experimental-jit ${{ matrix.debug && '--with-pydebug' || '' }}
           make all --jobs 4
+      - name: Test
+        run: |
           ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
 
-  # XXX: GH-133171
-  # jit-with-disabled-gil:
-  #   name: Free-Threaded (Debug)
-  #   needs: interpreter
-  #   runs-on: ubuntu-24.04
-  #   timeout-minutes: 90
-  #   strategy:
-  #     fail-fast: false
-  #     matrix:
-  #       llvm:
-  #         - 19
-  #   steps:
-  #     - uses: actions/checkout@v6
-  #       with:
-  #         persist-credentials: false
-  #     - uses: actions/setup-python@v6
-  #       with:
-  #         python-version: '3.11'
-  #     - name: Build with JIT enabled and GIL disabled
-  #       run: |
-  #         sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-  #         export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-  #         ./configure --enable-experimental-jit --with-pydebug --disable-gil
-  #         make all --jobs 4
-  #     - name: Run tests
-  #       run: |
-  #         ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3
-  tail-call-jit:
-    name: JIT with tail calling interpreter
-    needs: interpreter
+  linux-extras:
+    name: ${{ matrix.name }}
+
     runs-on: ubuntu-24.04
-    timeout-minutes: 90
+    timeout-minutes: 60
     strategy:
       fail-fast: false
       matrix:
-        llvm:
-          - 19
+        include:
+
+          - name: JIT without optimizations (Debug)
+            configure_flags: --enable-experimental-jit --with-pydebug
+            test_env: "PYTHON_UOPS_OPTIMIZE=0"
+          - name: JIT with tail calling interpreter
+            configure_flags: --enable-experimental-jit --with-tail-call-interp --with-pydebug
+            use_clang: true
+            run_tests: false
     steps:
       - uses: actions/checkout@v6
         with:
           persist-credentials: false
       - uses: actions/setup-python@v6
         with:
           python-version: '3.11'
-      - name: Build with JIT and tailcall
+      - name: Build
         run: |
-          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ matrix.llvm }}
-          export PATH="$(llvm-config-${{ matrix.llvm }} --bindir):$PATH"
-          CC=clang-${{ matrix.llvm }} ./configure --enable-experimental-jit --with-tail-call-interp --with-pydebug
+          sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" ./llvm.sh ${{ env.LLVM_VERSION }}
+          export PATH="$(llvm-config-${{ env.LLVM_VERSION }} --bindir):$PATH"
+          if [ "${{ matrix.use_clang }}" = "true" ]; then
+            export CC=clang-${{ env.LLVM_VERSION }}
+          fi
+          ./configure ${{ matrix.configure_flags }}
           make all --jobs 4
+      - name: Test
+        if: matrix.run_tests != false
+        run: |
+          ${{ matrix.test_env }} ./python -m test --multiprocess 0 --timeout 4500 --verbose2 --verbose3

.github/workflows/posix-deps-apt.sh

@@ -1,10 +1,9 @@
 #!/bin/sh
 apt-get update
 
-apt-get -yq install \
+apt-get -yq --no-install-recommends install \
     build-essential \
     pkg-config \
-    ccache \
     gdb \
     lcov \
     libb2-dev \

.github/workflows/regen-abidump.sh

@@ -2,7 +2,7 @@ set -ex
 
 export DEBIAN_FRONTEND=noninteractive
 ./.github/workflows/posix-deps-apt.sh
-apt-get install -yq abigail-tools python3
+apt-get install -yq --no-install-recommends abigail-tools python3
 export CFLAGS="-g3 -O0"
 ./configure --enable-shared && make
 make regen-abidump

.github/workflows/reusable-docs.yml

@@ -92,7 +92,7 @@ jobs:
         restore-keys: |
           ubuntu-doc-
     - name: 'Install Dependencies'
-      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install wamerican
+      run: sudo ./.github/workflows/posix-deps-apt.sh && sudo apt-get install --no-install-recommends wamerican
     - name: 'Configure CPython'
       run: ./configure --with-pydebug
     - name: 'Build CPython'

.github/workflows/reusable-san.yml

@@ -66,9 +66,6 @@ jobs:
       env:
         SANITIZER: ${{ inputs.sanitizer }}
         SAN_LOG_OPTION: log_path=${{ github.workspace }}/san_log
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
     - name: Configure CPython
       run: >-
         ./configure