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
LLVMFuzzerTestOneInput(uint8_t * data,size_t size)17 extern "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