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Daily parser fuzz

Daily parser fuzz #190

Workflow file for this run

name: Daily parser fuzz
on:
workflow_dispatch:
schedule:
- cron: "0 0 * * *"
pull_request:
paths:
- ".github/workflows/daily_fuzz.yaml"
permissions:
contents: read
concurrency:
group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
cancel-in-progress: true
env:
CARGO_INCREMENTAL: 0
CARGO_NET_RETRY: 10
CARGO_TERM_COLOR: always
RUSTUP_MAX_RETRIES: 10
PACKAGE_NAME: ruff
FORCE_COLOR: 1
jobs:
fuzz:
name: Fuzz
runs-on: ubuntu-latest
timeout-minutes: 20
# Don't run the cron job on forks:
if: ${{ github.repository == 'astral-sh/ruff' || github.event_name != 'schedule' }}
steps:
- uses: actions/checkout@v4
- uses: actions/setup-python@v5
with:
python-version: "3.12"
- name: Install uv
run: curl -LsSf https://astral.sh/uv/install.sh | sh
- name: Install Python requirements
run: uv pip install -r scripts/fuzz-parser/requirements.txt --system
- name: "Install Rust toolchain"
run: rustup show
- name: "Install mold"
uses: rui314/setup-mold@v1
- uses: Swatinem/rust-cache@v2
- name: Build ruff
# A debug build means the script runs slower once it gets started,
# but this is outweighed by the fact that a release build takes *much* longer to compile in CI
run: cargo build --locked
- name: Fuzz
run: python scripts/fuzz-parser/fuzz.py $(shuf -i 0-9999999999999999999 -n 1000) --test-executable target/debug/ruff
create-issue-on-failure:
name: Create an issue if the daily fuzz surfaced any bugs
runs-on: ubuntu-latest
needs: fuzz
if: ${{ github.repository == 'astral-sh/ruff' && always() && github.event_name == 'schedule' && needs.fuzz.result == 'failure' }}
permissions:
issues: write
steps:
- uses: actions/github-script@v7
with:
github-token: ${{ secrets.GITHUB_TOKEN }}
script: |
await github.rest.issues.create({
owner: "astral-sh",
repo: "ruff",
title: `Daily parser fuzz failed on ${new Date().toDateString()}`,
body: "Runs listed here: https://github.com/astral-sh/ruff/actions/workflows/daily_fuzz.yml",
labels: ["bug", "parser", "fuzzer"],
})