hdf5-pure 0.23.2

Pure-Rust HDF5 library: read, write, and edit files in place (WASM-compatible, no C dependencies)
Documentation 
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name: Fuzz

on:
  push:
    branches: [main]
  pull_request:
  schedule:
    # GitHub schedules are evaluated in UTC.
    - cron: '39 3 * * 5'

permissions:
  contents: read
  issues: write

env:
  CARGO_TERM_COLOR: always
  FUZZ_DURATION: 600
  FUZZ_TARGETS: |
    parse_file
    roundtrip_simple

jobs:
  cargo-fuzz:
    name: Fuzz (cargo-fuzz)
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install Rust nightly
        uses: dtolnay/rust-toolchain@3c5f7ea28cd621ae0bf5283f0e981fb97b8a7af9 # 2026-03-27
        with:
          toolchain: nightly
          targets: x86_64-unknown-linux-gnu
      - uses: Swatinem/rust-cache@v2
        with:
          key: cargo-fuzz
      - name: Install cargo-fuzz
        uses: taiki-e/install-action@920ab1831fbf4fb3ef75c8ead83556c918bb7290 # v2.79.8
        with:
          tool: cargo-fuzz
      - name: Use PR smoke duration
        if: github.event_name == 'pull_request'
        run: |
          set -euo pipefail
          echo "FUZZ_DURATION=30" >> "${GITHUB_ENV}"
      - name: Run streaming differential fuzz target
        run: |
          # Pin the gnu target: cargo-fuzz ships as a musl-static binary, so it
          # otherwise defaults to the musl target, whose static libc the address
          # sanitizer cannot link against.
          cargo +nightly fuzz run streaming_differential fuzz/corpus/parse_file \
            --target x86_64-unknown-linux-gnu -- -max_total_time="${FUZZ_DURATION}" -rss_limit_mb=4096
      - name: Run fuzz targets
        run: |
          set -euo pipefail

          for target in ${FUZZ_TARGETS}; do
            echo "::group::cargo +nightly fuzz run ${target}"
            cargo +nightly fuzz run "${target}" \
              --target x86_64-unknown-linux-gnu -- -max_total_time="${FUZZ_DURATION}" -rss_limit_mb=4096
            echo "::endgroup::"
          done
      # To reproduce a crash, download fuzz-artifacts and run:
      # cargo +nightly fuzz run <target> fuzz/artifacts/<target>/<crash-file> --target x86_64-unknown-linux-gnu -- -rss_limit_mb=4096
      - name: Upload crash artifacts
        id: upload-crash-artifacts
        if: failure()
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: fuzz-artifacts
          path: fuzz/artifacts
          retention-days: 14
          if-no-files-found: ignore
      - name: Create scheduled failure issue
        if: failure() && github.event_name == 'schedule'
        env:
          GH_TOKEN: ${{ github.token }}
          ARTIFACT_URL: ${{ steps.upload-crash-artifacts.outputs.artifact-url }}
        run: |
          set -euo pipefail

          {
            echo "Weekly fuzzing failed."
            echo
            echo "Run: ${GITHUB_SERVER_URL}/${GITHUB_REPOSITORY}/actions/runs/${GITHUB_RUN_ID}"
            if [[ -n "${ARTIFACT_URL}" ]]; then
              echo "Fuzz artifacts: ${ARTIFACT_URL}"
            fi
            echo
            echo "To reproduce, download and extract fuzz-artifacts at the repo root, then run:"
            echo
            echo '```sh'
            echo 'cargo +nightly fuzz run <target> fuzz/artifacts/<target>/<crash-file> --target x86_64-unknown-linux-gnu -- -rss_limit_mb=4096'
            echo '```'
          } > issue.md

          gh issue create \
            --title "Scheduled fuzzing failed" \
            --body-file issue.md \
            --label bug