pythongh-112536: Set up TSAN CI for free-threading

.github/workflows/build.yml

@@ -472,6 +472,64 @@ jobs:
  - name: Tests
  run: xvfb-run make test
 
+ build_tsan_free_threading:
+ name: 'Thread sanitizer (free-threading)'
+ runs-on: ubuntu-20.04
+ timeout-minutes: 60
+ needs: check_source
+ if: needs.check_source.outputs.run_tests == 'true'
+ env:
+ OPENSSL_VER: 3.0.13
+ PYTHONSTRICTEXTENSIONBUILD: 1
+ ASAN_OPTIONS: detect_leaks=0:allocator_may_return_null=1:handle_segv=0
+ steps:
+ - uses: actions/checkout@v4
+ - name: Runner image version
+ run: echo "IMAGE_VERSION=${ImageVersion}" >> $GITHUB_ENV
+ - name: Restore config.cache
+ uses: actions/cache@v4
+ with:
+ path: config.cache
+ key: ${{ github.job }}-${{ runner.os }}-${{ env.IMAGE_VERSION }}-${{ needs.check_source.outputs.config_hash }}
+ - name: Register gcc problem matcher
+ run: echo "::add-matcher::.github/problem-matchers/gcc.json"
+ - name: Install Dependencies
+ run: sudo ./.github/workflows/posix-deps-apt.sh
+ - name: Set up GCC-10 for TSAN
+ uses: egor-tensin/setup-gcc@v1
+ with:
+ version: 10
+ - name: Configure OpenSSL env vars
+ run: |
+ echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> $GITHUB_ENV
+ echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> $GITHUB_ENV
+ echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> $GITHUB_ENV
+ - name: 'Restore OpenSSL build'
+ id: cache-openssl
+ uses: actions/cache@v4
+ with:
+ path: ./multissl/openssl/${{ env.OPENSSL_VER }}
+ key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
+ - 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 ccache action
+ uses: hendrikmuhs/ccache-action@v1.2
+ with:
+ save: ${{ github.event_name == 'push' }}
+ max-size: "200M"
+ - name: Configure CPython
+ run: ./configure --config-cache --with-thread-sanitizer --disable-gil
+ - name: Build CPython
+ run: make -j4
+ - name: Display build info
+ run: make pythoninfo
+ - name: Tests
+ run: xvfb-run make test
+
  # CIFuzz job based on https://google.github.io/oss-fuzz/getting-started/continuous-integration/
  cifuzz:
  name: CIFuzz

configure.ac

@@ -3264,6 +3264,12 @@ AC_MSG_RESULT([no])
 with_tsan="no"
 ])
 
+if test "$with_tsan" = "yes"
+then
+ AC_DEFINE([MI_TSAN], [1],
+ [Define MI_TSAN for thread sanitizer])
+fi
+
 # Set info about shared libraries.
 AC_SUBST([SHLIB_SUFFIX])
 AC_SUBST([LDSHARED])

pyconfig.h.in

@@ -1588,6 +1588,9 @@
  <sysmacros.h>. */
 #undef MAJOR_IN_SYSMACROS
 
+/* Define MI_TSAN for thread sanitizer */
+#undef MI_TSAN
+
 /* Define if mvwdelch in curses.h is an expression. */
 #undef MVWDELCH_IS_EXPRESSION