on_pr_fuzzing.yml

# Run fuzzing against changes in Pull Requests for bug and leaks detection
name: Fuzzing (ClusterFuzzLite)

# PROCESS
#
# 1. Build a fuzzer for python for each sanitizer
# 2. Fuzz each sanitizer against each change in PR
# 3. Upload report as an artifact

# NOTES
#
# More info: https://google.github.io/clusterfuzzlite/

on:
  pull_request:
    paths:
      - '**'

permissions: read-all


jobs:
  fuzzing:
    runs-on: ubuntu-latest
    concurrency:
      group: ${{ github.workflow }}-${{ matrix.sanitizer }}-${{ github.ref }}
      cancel-in-progress: true
    strategy:
      fail-fast: false
      matrix:
        sanitizer:
        - address    # memory safety issues
        - undefined  # undefined behaviour (e.g., integer workflows, dangling pointers)
        - memory     # uninitialized memory (e.g., C-extensions)
    steps:
    - name: Build Fuzzers (${{ matrix.sanitizer }})
      id: build
      uses: google/clusterfuzzlite/actions/build_fuzzers@1e163f06cba7820da5154ac9fe1a32d7fe6f73a3  # v1
      with:
        language: python
        github-token: ${{ secrets.GITHUB_TOKEN }}
        sanitizer: ${{ matrix.sanitizer }}
    - name: Run Fuzzers (${{ matrix.sanitizer }})
      id: run
      uses: google/clusterfuzzlite/actions/run_fuzzers@1e163f06cba7820da5154ac9fe1a32d7fe6f73a3  # v1
      with:
        github-token: ${{ secrets.GITHUB_TOKEN }}
        fuzz-seconds: 90  # shorter interval to not block PR; we run longer interval async for increased safety
        mode: 'code-change'
        sanitizer: ${{ matrix.sanitizer }}