chromium/testing/libfuzzer/unittest_main.cc

// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifdef UNSAFE_BUFFERS_BUILD
// TODO(crbug.com/351564777): Remove this and convert code to safer constructs.
#pragma allow_unsafe_buffers
#endif

// A simple unit-test style driver for libfuzzer tests.
// Usage: <fuzzer_test> <file>...

#include <stddef.h>
#include <stdint.h>

#include <fstream>
#include <iostream>
#include <iterator>
#include <vector>

// Libfuzzer API.
extern "C" {
  // User function.
  int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
  // Initialization function.
  __attribute__((weak)) int LLVMFuzzerInitialize(int *argc, char ***argv);
  // Mutation function provided by libFuzzer.
  size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize);
}

std::vector<uint8_t> readFile(std::string path) { … }

size_t LLVMFuzzerMutate(uint8_t *Data, size_t Size, size_t MaxSize) { … }

int main(int argc, char **argv) { … }