[libfuzzer] unittest-style main driver.

testing/libfuzzer/unittest_main.cc

Index: testing/libfuzzer/unittest_main.cc
diff --git a/testing/libfuzzer/unittest_main.cc b/testing/libfuzzer/unittest_main.cc
new file mode 100644
index 0000000000000000000000000000000000000000..45fd2c6b3413141c7ba40b15da0563a82cbd66d7
--- /dev/null
+++ b/testing/libfuzzer/unittest_main.cc
@@ -0,0 +1,32 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// A simple unit-test style driver for libfuzzer tests.
+// Usage: <fuzzer_test> <file>...
+
+#include <fstream>
+#include <iostream>
+#include <iterator>
+#include <vector>
+
+extern "C" int LLVMFuzzerTestOneInput(const unsigned char* data, size_t size);
+
+std::vector<char> readFile(std::string path) {
+  std::ifstream in(path);
+  return std::vector<char>((std::istreambuf_iterator<char>(in)),
+      std::istreambuf_iterator<char>());
+}
+
+int main(int argc, char **argv) {
+  if (argc == 1) {
+    std::cerr << "Usage: " << argv[0] << " <file>..." << std::endl;
+    exit(1);
+  }
+
+  for (int i = 1; i < argc; ++i) {
+    std::cout << argv[i] << std::endl;
+    auto v = readFile(argv[i]);
+    LLVMFuzzerTestOneInput((const unsigned char *)v.data(), v.size());

[mmoroz, 2016/01/13 10:16:09]

C++ type casts are preferable to C-style casts.

+  }
+}