36 lines · cpp
1// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.2// See https://llvm.org/LICENSE.txt for license information.3// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception4 5// Test that libFuzzer does not crash when LLVMFuzzerMutate called from6// LLVMFuzzerCustomCrossOver.7#include <algorithm>8#include <cstddef>9#include <cstdint>10#include <cstdlib>11#include <string.h>12#include <string>13#include <vector>14 15#include "FuzzerInterface.h"16 17static volatile int sink;18 19extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {20 std::string Str(reinterpret_cast<const char *>(Data), Size);21 if (Size && Data[0] == '0')22 sink++;23 return 0;24}25 26extern "C" size_t LLVMFuzzerCustomCrossOver(const uint8_t *Data1, size_t Size1,27 const uint8_t *Data2, size_t Size2,28 uint8_t *Out, size_t MaxOutSize,29 unsigned int Seed) {30 std::vector<uint8_t> Buffer(MaxOutSize * 10);31 LLVMFuzzerMutate(Buffer.data(), Buffer.size(), Buffer.size());32 size_t Size = std::min(Size1, MaxOutSize);33 memcpy(Out, Data1, Size);34 return Size;35}36