Imported Upstream version 6.10.0.49

Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b

external/llvm-project/clang/tools/clang-fuzzer/ClangFuzzer.cpp

@@ -0,0 +1,26 @@
+//===-- ClangFuzzer.cpp - Fuzz Clang --------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+///
+/// \file
+/// \brief This file implements a function that runs Clang on a single
+///  input. This function is then linked into the Fuzzer library.
+///
+//===----------------------------------------------------------------------===//
+
+#include "handle-cxx/handle_cxx.h"
+
+using namespace clang_fuzzer;
+
+extern "C" int LLVMFuzzerInitialize(int *argc, char ***argv) { return 0; }
+
+extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
+  std::string s((const char *)data, size);
+  HandleCXX(s, {"-O2"});
+  return 0;
+}