Tree-sitter parser fuzzing

Important

This only works on Linux.

Options

directory:
  description: The directory of the grammar
corpus:
  description: The directory of the seed corpus
timeout:
  description: The time to wait if the fuzzer hangs
  default: 10
max-time:
  description: The maximum total fuzzing time
  default: 60
max-length:
  description: The maximum fuzz input length
  default: 4096
tree-sitter-version:
  description: The tree-sitter version to install
  default: latest

Example configuration

name: Fuzz parser

on:
  push:
    branches: [master]
    paths:
      - src/scanner.c
  pull_request:
    paths:
      - src/scanner.c

jobs:
  test:
    name: Parser fuzzing
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: tree-sitter/fuzz-action@v4

Using locally

Requirements

• pkg-config
• make
• jq
• llvm
• tree-sitter library

Usage

make LANG_NAME=parser LANG_DIR=/path/to/tree-sitter-parser

Tip

Check the Makefile for more options.

Credits

Based on vigoux/tree-sitter-fuzz-action