Function main

tools/fuzz/fuzz.cpp:688–820

const auto kDefaultEnvironment = SPV_ENV_UNIVERSAL_1_3;

int main(int argc, const char** argv) {
  std::string in_binary_file;
  std::string out_binary_file;
  std::string donors_file;
  std::string replay_transformations_file;
  std::vector<std::string> interestingness_test;
  std::string shrink_transformations_file;
  std::string shrink_temp_file_prefix = "temp_";
  spvtools::fuzz::RepeatedPassStrategy repeated_pass_strategy;
  auto fuzzing_target = FuzzingTarget::kSpirv;

  spvtools::FuzzerOptions fuzzer_options;
  spvtools::ValidatorOptions validator_options;

  FuzzStatus status =
      ParseFlags(argc, argv, &in_binary_file, &out_binary_file, &donors_file,
                 &replay_transformations_file, &interestingness_test,
                 &shrink_transformations_file, &shrink_temp_file_prefix,
                 &repeated_pass_strategy, &fuzzing_target, &fuzzer_options,
                 &validator_options);

  if (status.action == FuzzActions::STOP) {
    return status.code;
  }

  std::vector<uint32_t> binary_in;
  if (!ReadBinaryFile(in_binary_file.c_str(), &binary_in)) {
    return 1;
  }

  spvtools::fuzz::protobufs::FactSequence initial_facts;

  // If not found, dot_pos will be std::string::npos, which can be used in
  // substr to mean "the end of the string"; there is no need to check the
  // result.
  size_t dot_pos = in_binary_file.rfind('.');
  std::string in_facts_file = in_binary_file.substr(0, dot_pos) + ".facts";
  std::ifstream facts_input(in_facts_file);
  if (facts_input) {
    std::string facts_json_string((std::istreambuf_iterator<char>(facts_input)),
                                  std::istreambuf_iterator<char>());
    facts_input.close();
    if (!google::protobuf::util::JsonStringToMessage(facts_json_string,
                                                     &initial_facts)
             .ok()) {
      spvtools::Error(FuzzDiagnostic, nullptr, {}, "Error reading facts data");
      return 1;
    }
  }

  std::vector<uint32_t> binary_out;
  spvtools::fuzz::protobufs::TransformationSequence transformations_applied;

  spv_target_env target_env = kDefaultEnvironment;

  switch (status.action) {
    case FuzzActions::FORCE_RENDER_RED:
      if (!spvtools::fuzz::ForceRenderRed(