WIP test

Author: mordante

.github/workflows/libcxx-build-and-test.yaml

@@ -55,16 +55,10 @@ jobs:
       fail-fast: false
       matrix:
         config: [
-          'generic-cxx03',
-          'generic-cxx26',
-          'generic-modules'
+          'generic-ubsan'
         ]
         cc: [  'clang-19' ]
         cxx: [ 'clang++-19' ]
-        include:
-          - config: 'generic-gcc'
-            cc: 'gcc-14'
-            cxx: 'g++-14'
     steps:
       - uses: actions/checkout@v4
       - name: ${{ matrix.config }}.${{ matrix.cxx }}
@@ -82,153 +76,3 @@ jobs:
             **/CMakeError.log
             **/CMakeOutput.log
             **/crash_diagnostics/*
-  stage2:
-    if: github.repository_owner == 'llvm'
-    runs-on: libcxx-runners-8-set
-    needs: [ stage1 ]
-    continue-on-error: false
-    strategy:
-      fail-fast: false
-      matrix:
-        config: [
-          'generic-cxx11',
-          'generic-cxx14',
-          'generic-cxx17',
-          'generic-cxx20',
-          'generic-cxx23'
-        ]
-        cc: [ 'clang-19' ]
-        cxx: [ 'clang++-19' ]
-        include:
-          - config: 'generic-gcc-cxx11'
-            cc: 'gcc-14'
-            cxx: 'g++-14'
-          - config: 'generic-cxx23'
-            cc: 'clang-17'
-            cxx: 'clang++-17'
-          - config: 'generic-cxx26'
-            cc: 'clang-18'
-            cxx: 'clang++-18'
-    steps:
-      - uses: actions/checkout@v4
-      - name: ${{ matrix.config }}
-        run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
-        env:
-          CC: ${{ matrix.cc }}
-          CXX: ${{ matrix.cxx }}
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
-        if: always()  # Upload artifacts even if the build or test suite fails
-        with:
-          name: ${{ matrix.config }}-${{ matrix.cxx }}-results
-          path: |
-            **/test-results.xml
-            **/*.abilist
-            **/CMakeError.log
-            **/CMakeOutput.log
-            **/crash_diagnostics/*
-  stage3:
-    if: github.repository_owner == 'llvm'
-    needs: [ stage1, stage2 ]
-    continue-on-error: false
-    strategy:
-      fail-fast: false
-      max-parallel: 8
-      matrix:
-        config: [
-          'generic-abi-unstable',
-          'generic-hardening-mode-debug',
-          'generic-hardening-mode-extensive',
-          'generic-hardening-mode-fast',
-          'generic-hardening-mode-fast-with-abi-breaks',
-          'generic-merged',
-          'generic-modules-lsv',
-          'generic-no-exceptions',
-          'generic-no-experimental',
-          'generic-no-filesystem',
-          'generic-no-localization',
-          'generic-no-random_device',
-          'generic-no-threads',
-          'generic-no-tzdb',
-          'generic-no-unicode',
-          'generic-no-wide-characters',
-          'generic-no-rtti',
-          'generic-optimized-speed',
-          'generic-static',
-          # TODO Find a better place for the benchmark and bootstrapping builds to live. They're either very expensive
-          # or don't provide much value since the benchmark run results are too noise on the bots.
-          'benchmarks',
-          'bootstrapping-build'
-        ]
-        machine: [ 'libcxx-runners-8-set' ]
-        include:
-        - config: 'generic-cxx26'
-          machine: libcxx-runners-8-set
-        - config: 'generic-asan'
-          machine: libcxx-runners-8-set
-        - config: 'generic-tsan'
-          machine: libcxx-runners-8-set
-        - config: 'generic-ubsan'
-          machine: libcxx-runners-8-set
-        # Use a larger machine for MSAN to avoid timeout and memory allocation issues.
-        - config: 'generic-msan'
-          machine: libcxx-runners-8-set
-    runs-on: ${{ matrix.machine }}
-    steps:
-      - uses: actions/checkout@v4
-      - name: ${{ matrix.config }}
-        run: libcxx/utils/ci/run-buildbot ${{ matrix.config }}
-        env:
-          CC: clang-19
-          CXX: clang++-19
-      - uses: actions/upload-artifact@26f96dfa697d77e81fd5907df203aa23a56210a8 # v4.3.0
-        if: always()
-        with:
-          name: ${{ matrix.config }}-results
-          path: |
-            **/test-results.xml
-            **/*.abilist
-            **/CMakeError.log
-            **/CMakeOutput.log
-            **/crash_diagnostics/*
-  windows:
-    runs-on: windows-2022
-    needs: [ stage1 ]
-    strategy:
-      fail-fast: false
-      matrix:
-        include:
-        - { config: clang-cl-dll, mingw: false }
-        - { config: clang-cl-static, mingw: false }
-        - { config: clang-cl-no-vcruntime, mingw: false }
-        - { config: clang-cl-debug, mingw: false }
-        - { config: clang-cl-static-crt, mingw: false }
-        - { config: mingw-dll, mingw: true }
-        - { config: mingw-static, mingw: true }
-        - { config: mingw-dll-i686, mingw: true }
-    steps:
-      - uses: actions/checkout@v4
-      - name: Install dependencies
-        run: |
-          choco install -y ninja
-          pip install psutil
-      - name: Install a current LLVM
-        if: ${{ matrix.mingw != true }}
-        run: |
-          choco install -y llvm --version=18.1.6 --allow-downgrade
-      - name: Install llvm-mingw
-        if: ${{ matrix.mingw == true }}
-        run: |
-          curl -LO https://github.com/mstorsjo/llvm-mingw/releases/download/20240606/llvm-mingw-20240606-ucrt-x86_64.zip
-          powershell Expand-Archive llvm-mingw*.zip -DestinationPath .
-          del llvm-mingw*.zip
-          mv llvm-mingw* c:\llvm-mingw
-          echo "c:\llvm-mingw\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
-      - name: Add Git Bash to the path
-        run: |
-          echo "c:\Program Files\Git\usr\bin" | Out-File -FilePath $Env:GITHUB_PATH -Encoding utf8 -Append
-      - name: Set up the MSVC dev environment
-        if: ${{ matrix.mingw != true }}
-        uses: ilammy/msvc-dev-cmd@v1
-      - name: Build and test
-        run: |
-          bash libcxx/utils/ci/run-buildbot ${{ matrix.config }}

libcxx/CMakeLists.txt

@@ -639,7 +639,7 @@ function(get_sanitizer_flags OUT_VAR  USE_SANITIZER)
         append_flags(SANITIZER_FLAGS "-fsanitize-memory-track-origins")
       endif()
     elseif (USE_SANITIZER STREQUAL "Undefined")
-      append_flags(SANITIZER_FLAGS "-fsanitize=undefined" "-fno-sanitize=vptr,function" "-fno-sanitize-recover=all")
+      append_flags(SANITIZER_FLAGS "-fsanitize=undefined" "-fsanitize=implicit-integer-sign-change" "-fno-sanitize=vptr,function" "-fno-sanitize-recover=all")
     elseif (USE_SANITIZER STREQUAL "Address;Undefined" OR
             USE_SANITIZER STREQUAL "Undefined;Address")
       append_flags(SANITIZER_FLAGS "-fsanitize=address,undefined" "-fno-sanitize=vptr,function" "-fno-sanitize-recover=all")