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 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