// Copyright 2017 Google Inc. All Rights Reserved.
 // Licensed under the Apache License, Version 2.0 (the "License");
 
 // Example of a standalone runner for "fuzz targets".
 // It reads all files passed as parameters and feeds their contents
 // one by one into the fuzz target (LLVMFuzzerTestOneInput).
 // This runner does not do any fuzzing, but allows us to run the fuzz target
 // on the test corpus (e.g. "do_stuff_test_data") or on a single file,
 // e.g. the one that comes from a bug report.
 
 #include <cassert>
 #include <iostream>
 #include <fstream>
 #include <vector>
 
 // Forward declare the "fuzz target" interface.
 // We deliberately keep this inteface simple and header-free.
 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size);
 
 int main(int argc, char **argv) {
   for (int i = 1; i < argc; i++) {
     std::ifstream in(argv[i]);
     in.seekg(0, in.end);
     size_t length = in.tellg();
     in.seekg (0, in.beg);
     std::cout << "Reading " << length << " bytes from " << argv[i] << std::endl;
     // Allocate exactly length bytes so that we reliably catch buffer overflows.
     std::vector<char> bytes(length);
     in.read(bytes.data(), bytes.size());
     assert(in);
     LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t *>(bytes.data()),
                            bytes.size());
     std::cout << "Execution successful" << std::endl;
   }
 }