fuzz.yml

name: fuzz

on:
  pull_request:
    branches: [main]
  push:
    branches: [main]
  schedule:
    # Weekly deep run, Monday 03:00 UTC.
    - cron: '0 3 * * 1'

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  fuzz:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - name: Install clang
        run: |
          sudo apt-get update
          sudo apt-get install -y clang

      - name: Build fuzz target
        run: |
          cmake -S . -B build \
            -DCMAKE_CXX_COMPILER=clang++ \
            -DPTN_BUILD_FUZZ=ON
          cmake --build build --target ptn_fuzz_match

      - name: Fuzz (oracle + ASan/UBSan)
        shell: bash
        run: |
          set -euo pipefail
          TIME=180
          if [ "${{ github.event_name }}" = "schedule" ]; then
            TIME=900
          fi
          mkdir -p fuzz_corpus artifacts
          ./build/fuzz/ptn_fuzz_match fuzz_corpus \
            -max_total_time="$TIME" \
            -rss_limit_mb=2048 \
            -artifact_prefix=artifacts/ \
            -print_final_stats=1

      - name: Upload crash artifacts
        if: failure()
        uses: actions/upload-artifact@v4
        with:
          name: fuzz-crash-${{ github.sha }}
          path: artifacts/
          if-no-files-found: ignore