1 // This file is distributed under the University of Illinois Open Source 2 // License. See LICENSE.TXT for details. 3 4 // Simple test for a cutom mutator. 5 #include <assert.h> 6 #include <cstdint> 7 #include <cstdlib> 8 #include <cstddef> 9 #include <iostream> 10 11 #include "FuzzerInterface.h" 12 13 static volatile int Sink; 14 15 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) { 16 assert(Data); 17 if (Size > 0 && Data[0] == 'H') { 18 Sink = 1; 19 if (Size > 1 && Data[1] == 'i') { 20 Sink = 2; 21 if (Size > 2 && Data[2] == '!') { 22 std::cout << "BINGO; Found the target, exiting\n"; 23 exit(1); 24 } 25 } 26 } 27 return 0; 28 } 29 30 extern "C" size_t LLVMFuzzerCustomMutator(uint8_t *Data, size_t Size, 31 size_t MaxSize, unsigned int Seed) { 32 static bool Printed; 33 if (!Printed) { 34 std::cerr << "In LLVMFuzzerCustomMutator\n"; 35 Printed = true; 36 } 37 return LLVMFuzzerMutate(Data, Size, MaxSize); 38 } 39
