1//===-- ClangFormatFuzzer.cpp - Fuzz the Clang format tool ----------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8///
9/// \file
10/// This file implements a function that runs Clang format on a single
11///  input. This function is then linked into the Fuzzer library.
12///
13//===----------------------------------------------------------------------===//
14
15#include "clang/Format/Format.h"
16
17extern "C" int LLVMFuzzerTestOneInput(uint8_t *data, size_t size) {
18  // FIXME: fuzz more things: different styles, different style features.
19  std::string s((const char *)data, size);
20  auto Style = getGoogleStyle(clang::format::FormatStyle::LK_Cpp);
21  Style.ColumnLimit = 60;
22  auto Replaces = reformat(Style, s, clang::tooling::Range(0, s.size()));
23  auto Result = applyAllReplacements(s, Replaces);
24
25  // Output must be checked, as otherwise we crash.
26  if (!Result) {}
27  return 0;
28}
29