tests/oss-fuzz/repro_fuzz.cc

// Copyright 2023 Google LLC
// SPDX-License-Identifier: BSD-2-Clause

#include <chrono>
#include <cstddef>
#include <cstdint>
#include <fstream>
#include <iostream>
#include <vector>

using seconds = std::chrono::duration<double>;
using chrono = std::chrono::high_resolution_clock;

extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);

namespace {
std::vector<uint8_t> ReadFile(const char* path) {
  std::vector<uint8_t> buffer;
  std::ifstream file(path, std::ios::binary);
  buffer.resize(file.seekg(0, std::ios::end).tellg());
  file.seekg(0, std::ios::beg)
      .read(reinterpret_cast<char*>(buffer.data()), buffer.size());
  return buffer;
}
}  // namespace

int main(int argc, char* argv[]) {
  if (argc < 2) {
    std::cerr << "Missing reproducer file" << std::endl;
    return 1;
  }

  for (int i = 1; i < argc; ++i) {
    const std::vector<uint8_t> buffer = ReadFile(argv[i]);
    const chrono::time_point start_time = chrono::now();
    LLVMFuzzerTestOneInput(buffer.data(), buffer.size());
    std::cout << "Reproducing " << argv[i] << " took "
              << seconds(chrono::now() - start_time).count() << " seconds."
              << std::endl;
  }
  return 0;
}